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©Copyright IBM Corp. 1985 
LC28-1389-0 
File No. S370-37 


MVS/370 System 
Programming Library: 
Debugging Handbook 
Program Product Volume 5 

Data Areas S-Z 


MVS/System Product 
JES3 5740-XYN 
MVS/System Product 
JES2 5740-XYS 




First Edition (July, 1985) 


This edition applies to Version 1 Release 3.5 of MVS/System Product - JES2 5740-XYS 
and of MVS/System Product - JES3 5740-XYN until otherwise indicated in new editions 
or technical newsletters. See the Summary of Amendments following the Contents for a 
summary of the enhancements made in this manual. Changes are made periodically to 
the information herein; before using this publication in connection with the operation of 
IBM systems, consult the System/370 Bibliography , GC20-0001, for the editions that are 
applicable and current. 

References in this publication to IBM products, programs, or services do not imply that 
IBM intends to make these available in all countries in which IBM operates. Any 
reference to an IBM program product in this publication is not intended to state or imply 
that only IBM's program product may be used. Any functionally equivalent program 
may be used instead. 

Publications are not stocked at the address given below. Requests for IBM publications 
should be made to your IBM representative or to the IBM branch office serving your 
locality. 

A form for reader's comments is provided at the back of this publication. If the form has 
been removed, comments may be addressed to IBM Corporation, Information 
Development, Department D58, Building 921-2, PO Box 390, Poughkeepsie, N.Y. 12602. 
IBM may use or distribute any of the information you supply in any way it believes 
appropriate without incurring any obligation to you. 

This document contains restricted materials of International Business Machines 
Corporation. 

© Copyright International Business Machines Corporation 1980, 1985 


Contains Restricted Materials of IBM 
Licensed Materials — Property of IBM 


Preface 


This handbook provides reference information for use in debugging user or system programs. 
The user of this publication should have a working knowledge of MVS/370 functions and logic. 
It is intended for system programmers who are involved with debugging MVS system problems. 

The handbook is divided into five volumes: 


Volume 1 (LC28-1385) 

• Chapter 1. Problem Categories and Analysis describes an approach to debugging based on 
identification and analysis of system status indicators. 

• Chapter 2. Debugging Aids summarizes major MVS/370 debugging aids. 

• Chapter 3. Dump and Trace Formats describes the output of debugging aids summarized in 
Section 2. 

• Chapter 4. Error Indicators summarizes major system error indicators. 

• Chapter 5. General Reference provides general reference information useful for debugging 
purposes. 

• Chapter 6. Control Block Chains illustrates the logical relationships of major system data 
areas. 


Volume 2 (LC28-1386) 

• Data Areas A-D Describes the format of the data areas, and includes data areas frequently 
used in debugging. 


Volume 3 (LC28-1387) 

• Data Areas E-M Describes the format of the data areas, and includes data areas frequently 
used in debugging. 


LC28-1389-0 © Copyright IBM Corp. 1980, 1985 


Preface 111 



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Volume 4 (LC28-1388) 

• Data Areas N-R Describes the format of the data areas, and includes data areas frequently 
used in debugging. 


Volume 5 (LC28-1389) 

• Data Areas S-Z Describes the format of the data areas, and includes data areas frequently 
used in debugging. 


IV MVS/370 Debug Hdbk Vol 5 


LC28-1389-0 © Copyright IBM Corp. 1980, 1985 



Contains Restricted Materials of IBM 
Licensed Materials — Property of IBM 


Contents 


Data Area Descriptions ....... 1 SSJT 


SAHT .1 SSMO 

SART .2 SSMS 

SAT .6 SSNQ 

SCA .8 SSOB 

SCB .9 SSRB 

SCCB . 11 SSRQ 

SCCH . 15 SSRR 

SCD . 39 SSSI 

SCL . 41 SSSO 

SCT . 44 SSUS 

SCVT . 50 SSVS 

SDCT . 54 SSVT 

SDUMP . 56 SSHA 

SDH A . 60 SSHT 

SGTE . 84 STKE 

SIOT . 85 SVCTABLE 

SMCA . 95 SVT 

SMDLR .107 SHB 

SMEH .113 TAXE 

SMPl .115 TCAST 

SPCT .117 TCB 

SPL .123 TCCW 

SPQE .125 TCT 

SRB .126 TDCM 

SSAG .129 TIOCBUF 

SSAL .131 TIOCRPT 

SSARB .134 TIOT 

SSAT .136 TQE 

SSCA .137 TSB 

SSCF .138 TSVT 

SSCI .140 TTE 

SSCM .142 TVCS 

SSCS .143 TVWA 

SSCU .146 THAR 

SSCVT .147 UCB 

SSDA .149 UCBCX 

SSDD .151 UCBTYP 

SSDM .152 UCM 

SSDR .153 UPT 

SSEN .155 VFCB 

SSET .156 VRAMAP 

SSIB .157 VUNT 

SSJS .158 HMST 


160 

162 

164 

165 

166 
168 

172 

173 

174 

175 

178 

179 
181 

183 

184 
186 
188 
189 
198 
200 
202 
205 
232 
236 
246 
265 
267 
270 
274 
276 
285 
287 
298 
300 
307 
314 
344 
346 
359 
387 
389 
391 
401 
404 


LC28-1389-0 © Copyright IBM Corp. 1980, 1985 


Contents V 



























































































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WQE 

WSAVTC 

WSAVTG 

WSAVT.L 


408 

XDBA 

425 

XPTE 

428 

XSB 

430 

XTLST 


432 

434 

436 

438 


VI 


MVS/370 Debug Hdbk Vol 5 


LC28-1389-0 © Copyright IBM Corp. 1980, 1985 











Contains Restricted Materials of IBM 
Licensed Materials — Property of IBM 


Summary of Amendments 


Summary of Amendments 
for LC28-1389-0 
as Updated July, 1985 
by a major revision. 

This edition supports 

Version 1 Release 1.3.5 of MVS/System Product 
The new or changed data areas included are: 


SCCB 

TCT 

SCL 

TSVT 

SDCT 

UCB 

SMCA 

WSAVTC 

SSSO 


SVT 


TCB 



| Also, minor technical and editorial changes were made throughout the publication. 


LC28-1389-0 © Copyright IBM Corp. 1980, 1985 


Summary of Amendments Vll 




Contains Restricted Materials of IBM 
Licensed Materials — Property of IBM 


VU1 


MVS/370 Debug Hdbk Vol 5 


LC28-1389-0 © Copyright IBM Corp. 1980, 1985 



DATA AREA DESCRIPTIONS 


Contains Restricted Materials of IBM 
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SAHT 


Common Name : System/ASID Hash Table 
Macro XD : ISGSAHT 
DSECT Name : SAHT 

Created by : ISGNASIM in global resource serialization private area. 

Subpool and Key : 229 and key 0 

Size : 1024 bytes 

Pointed to by : GVTX - GVTXSAHT 

Serialization : Global resource serialization Local Lock. 

Function : Each System/ASID Hash Table entry contains a pointer to a 
chain of QEL anchors. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) 

STRUCTURE 

8 

SAHT 

SYSTEM/ASID HASH TABLE 

0 

(0) 

CHARACTER 

8 

SAHTHDR 

SYSTEM/ASID HASH TABLE HEADER 

0 

(0) 

CHARACTER 

4 

SAHTID 

CONTROL BLOCK ACRONYM (SAHT) 

4 

(4) 

UNSIGNED 

2 

SAHTNENT 

NUMBER OF ENTRIES IN TABLE 

6 

(6) 

CHARACTER 

2 


RESERVED 

8 

(8) 

CHARACTER 

0 

SAHTENTS 

SYSTEM ASID HASH TABLE ENTRIES 

0 

(0) 

STRUCTURE 

4 

SAHTENT 

SYSTEM/ASID HASH TABLE ENTRY 

0 

(0) 

ADDRESS 

4 

SAHTEQEL 

ADDRESS OF FIRST QEL ANCHOR ON SYNONYM 


CHAIN 


Data Area Descriptions 


1 








Contains Restricted Materials of IBM 
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SART 


Common Name : Swap Activity Reference Table 

Macro ID : ILRSART 

DSECT Name : SART 

Created by : ILRASRIM 

Subpool and Key : 245 and key 0 

Size : BO bytes plus (48 bytes for each swap data set); 1280 bytes maximum 
Pointed to by : ASMSART field of the ASMVT data area. 

Serialization l The SALLOC lock is used to serialize most of the SART 
header. Each SARTE is serialized by a special compare & swap lockword 
in the SARTE. The SCCW available queue (SARSCCNQ) and SRB count (SARSRBCT) 
in the SART header as well as the SCCH queue in each SARTE (SRESCCW) 
are serialized by compare & swap logic. 

Function : SART is the map relating the collection of logical swap sets 
of auxiliary storage to identifiable swap data sets (VSAM data spaces). 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) 

STRUCTURE 

80 

SART 

SWAP ACTIVITY REFERENCE TABLE 

0 

(0) 

CHARACTER 

80 

SARTHDR 

SART HEADER 

0 

(0) 

CHARACTER 

4 

SARID 

SART IDENTIFIER. SET TO 'SART* 

4 

(4) 

SIGNED 

4 

SARSIZE 

NO. OF SARTES IN THIS SART 

8 

(8) 

SIGNED 

4 

SARUSE 

NUMBER OF SARTES IN USE 

12 

(C) 

ADDRESS 

4 

SARBPFNX 

ADDRESS OF NEXT SARTE FROM WHICH TO 
ALLOCATE SWAP SETS ON A BPF FILE 

16 

(10) 

ADDRESS 

4 

SARFXDNX 

ADDRESS OF NEXT SARTE FROM WHICH TO 
ALLOCATE SWAP SETS ON A FIXED HEAD FILE 

20 

(14) 

ADDRESS 

4 

SARMOVNX 

ADDRESS OF NEXT SARTE FORM WHICH TO 
ALLOCATE SWAP SETS ON A MOVABLE HEAD 

FILE 


SART 

2 MVS/370 Debug Hdbk Vol 5 


SART 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 










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OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


24 

(18) ADDRESS 

4 

SARDSNL 

ADDRESS OF DATA SET NAME LIST IN CSA FOR 
THE SWAP DATA SETS 

28 

(1C) ADDRESS 

4 

SARSDCT 

ADDRESS OF SWAP DEVICE TABLE 


THE FOLLOWING NAMES ARE 

UNIQUE FOR THE 

SART HEADER 






32 

(20) ADDRESS 

4 

SARSCCWQ 

QUEUE OF AVAILABLE SCCWS 

36 

(24) SIGNED 

4 

SARSETCT 

NUMBER OF SWAP SETS CURRENTLY AVAILABLE 
ON ALL SWAP DATA SETS 

40 

(28) CHARACTER 

8 

SARWAITQ 

WAIT QUEUE OF AIAS WAITING FOR AVAILABLE 
SWAP RESOURCES 

40 

(28) ADDRESS 

4 

SARWAITF 

ADDRESS OF FIRST AIA ON QUEUE 

44 

(20 ADDRESS 

4 

SARWAITL 

ADDRESS OF LAST AIA ON QUEUE 

48 

(30) ADDRESS 

4 

SARSRBP 

ADDRESS OF SRB USED TO SCHEDULE SWAP 
DRIVER 

52 

(34) SIGNED 

4 

SARSRBCT 

COUNT OF SRBS SCHEDULED FOR SNAP DRIVER 
WHICH HAVE NOT BEEN DISPATCHED-EITHER 
ZERO OR ONE. 

56 

(38) SIGNED 

4 

SARSETSZ 

NO. OF PAGES/SLOTS IN SWAP SET 

60 

(30 CHARACTER 

20 


RESERVED 

80 

(50) CHARACTER 

n 

SARENTS 

SART ENTRIES 

0 

(0) STRUCTURE 

48 

SARTE 

SART ENTRY 

0 

(0) ADDRESS 

4 

SRENEXT 

NEXT SARTE IN CIRCULAR CHAIN 


SART 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SART 

Data Area Descriptions 3 



















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OFF-SE TS _ HE! _ LENGTH NAME _ DESCRIPTION 


4 

(4) SIGNED 

4 

SRELOCK 

C&S LOCK TO SERIALIZE SNAP DRIVER PROC¬ 
ESSING 

8 

(8) CHARACTER 

1 

SREFLGO 

SARTE FLAGS 


1111 .... 



RESERVED 


1 • • • 


SREBPF 

1 => THIS DATA SET IS ASSOCIATED WITH A 
BPF CACHE 


• ••• » 1 • « 


SRESPP 

1 => USE SET PAGING PARAMETERS CCW 


•••• till 



RESERVED 

9 

(9) CHARACTER 

1 

SREFLG 

SARTE FLAGS 


1 » • » • • • • 


SRENUSE 

1 = SARTE CURRENTLY NOT IN USE 0 = THIS 
SARTE IN USE 


• 1 » » •••« 


SREDSBD 

1 = ASM HAS DETECTED ERRORS PRECLUDING 
USE OF THIS DATA SET 0 = SWAP DATA SET 
SATISFACTORY FOR USE 


• •X* • • • • 


SREDRIVE 

SWAP DRIVER REDRIVE FLAG 


•••X •••• 


SREFIXED 

FIXED HEAD FILE FLAG 1 = SARTE FOR FIXED 
HEAD DEVICE 0 = SARTE FOR MOVABLE HEAD 
DEVICE 


• • • • 1 • • • 


SREREQD 

REQUEST QUEUED DURING ILRSWAP PROCESSING 


• • • • • 1 « • 


SREASGN 

LSID LAST USED AS READ 


• ••• •# X• 


SREFUSE 

IORB MARKED BUSY 


•••• •••X 


SRECKD 

ON = EXTENDED CKD ARCHITECTURE CCW'S 
ALLOWED FOR THIS DATASET. OFF = NOT 
ALLOWED. 

10 

(A) SIGNED 

2 

SRENN 

SARTE NUMBER FOR THIS SARTE 

12 

(C) ADDRESS 

4 

SRESCCW 

FIRST IN A CHAIN OF ONE OR MORE SCCHS 
WAITING TO BE STARTED 

16 

(10) SIGNED 

4 

SRETOTSL 

TOTAL NUMBER OF SWAP SETS ON THIS DATA 
SET 

20 

(14) SIGNED 

4 

SREAVLSL 

COUNT OF AVAILABLE SWAP SETS ON THIS 

DATA SET 

24 

(18) SIGNED 

4 

SRERRCNT 

COUNT OF ERROR SWAP SETS ON THIS DATA 

SET 

28 

(1C) ADDRESS 

4 

SREIORB 

FIRST IORB FOR THIS DATA SET 


SART 

4 MVS/370 Debug Hdbk Vol 5 


SART 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 









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OFESETS_ TYPE LENGTH NAME _ DESCRIPTION 


32 

(20) 

ADDRESS 

4 

SRESAT 

PTR 

TO 

SAT FOR THIS DATA SET 

36 

(24) 

ADDRESS 

4 

SRESDCTE 

PTR 

TO 

SDCTE FOR THIS DATA SET 

40 

(28) 

ADDRESS 

4 

SREEDB 

PTR 

TO 

EDB FOR THIS DATA SET 

44 

(20 

ADDRESS 

4 

SREUCB 

PTR 

TO 

UCB FOR THIS DATA SET 


8ART 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SART 

Data Area Descriptions 5 






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SAT 


Common Name : Swap Allocation Table 

Macro ZD : ILRSAT 

DSECT Name : SAT 

Created by : ILRASRIM, ILRPGEXP 

Subpool and Key : 245 and key 0 

Size : 36 plus number of swap sets in the swap data set 

Pointed to by ! SRESAT field of the SARTE data area within the SART data 

area. 

Serialization s The SATMAPs are serialized by the SALLOC lock. 

Function : The SAT is a concise representation of the allocation of swap 
sets within a swap data set. 

OEFSETS_IYPI_ LENGTH NAME _ DESCRIPTION 


0 

(0) 

STRUCTURE 

36 

SAT 

SNAP ALLOCATION TABLE 

0 

(0) 

CHARACTER 

36 

SATHDR 

SAT HEADER 

0 

CO) 

CHARACTER 

4 

SATID 

SAT IDENTIFIER. SET TO 'SAT' 

4 

(4) 

ADDRESS 

4 

SATSARTE 

POINTER TO ASSOCIATED SARTE 

8 

(8) 

SIGNED 

2 

SATMAPLN 

NUMBER OF BYTES IN SATMAP 

10 

(A) 

SIGNED 

2 

SATBYTCL 

THE POWER OF 2 REPRESENTING THE NUMBER 

OF BYTES REQUIRED TO MAP A SINGLE CYLIN¬ 
DER FOR THIS DEVICE TYPE (ZERO 0RIGINED) 

12 

CC) 

CHARACTER 

2 

SATRSV1 

RESERVED 

14 

CE) 

CHARACTER 

1 

SATMASK 

BYTE MASK FOR LAST SWAP SET FREED 

15 

CF) 

CHARACTER 

1 


RESERVED 

16 

(10) 

CHARACTER 

4 

SATRSV2 

RESERVED 

20 

(14) 

SIGNED 

4 

SATSLTN0 

SLOT NUMBER OF LAST SWAP SET FREED 

24 

(18) 

ADDRESS 

4 

SATASGN 

ADDR OF THE SATMAP IN WHICH THE LAST 

SWAP SET RESIDES 


SAT 

6 


MVS/370 Debug Hdbk Vol 5 


SAT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 










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OFFSETS _ TYPE LENGTH NAME _ DESCRIPTION 

28 (1C) CHARACTER A SATCCHHB CCHH OF BEGINNING OF DATA SET 


32 (20) CHARACTER 4 SATCCHHE CCHH OF END OF DATA SET 


36 (24) CHARACTER 0 SATMAPS SWAP SET BYTE MAPS. THE NUMBER OF BYTES 

REQUIRED TO MAP A CYLINDER IS DEPENDENT 
ON THE DEVICE TYPE AND IS MAINTAINED IN 
SATBYTCL. 


SAT 

LC28-1389-0 (c) Copyright IBM Corp 


1980, 1985 


SAT 

Data Area Descriptions 7 




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SCA 


Common Name : SPIE Control Area 
Macro ID : IHASCA 
DSECT Name : SCA 

Created by : IEAVTBOO(IGCOOOID) SPIE service (SVC) routine 
Subpool and Key : 245 and key o 

Size i 68 bytes including SRB 

Pointed to by : TCBPIE field of the TCB data area 
Serialization S Local lock and task active mode 

Function : Provides information to program check FLIH in its processing 
of program interruptions covered by a SPIE EXIT. Also contains storage 
used as an SRB by program check FLIH. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) 

STRUCTURE 

n 

SCA 


0 

(0) 

ADDRESS 

4 

SCAPIE 

ADDRESS OF PIE 

4 

(4) 

CHARACTER 

1 

SCAPMASK 

PROGRAM MASK AT TIME OF SPIE INITIATION. 
RESTORED AT SPIE NULLIFICATION. 

5 

(5) 

CHARACTER 

3 

SCARESV 

RESERVED FOR FUTURE USE 

8 

(8) 

CHARACTER 

16 

SCAPARMS 

PROG CHECK FLIH'S SRB PARMS 

24 

(18) 

ADDRESS 

4 

SCARPPTR 

RECOVERY PIE PICA ADDRESS 

28 

(1C) 

ADDRESS 

4 

SCAFRPPQ 

FREE RPIEPICA QUEUE HEADER 

32 

(20) 

. .1 

SIGNED 

1 • • • • 

4 

SCASRB 

SCALEN 

SRB USED BY PROG CHECK FLIH 

"*-SCA" LENGTH OF SCA EXCLUDING THE SRB 


SCA 

8 


MVS/370 Debug Hdbk Vol 5 


LC28-1389-0 (c) Copyright IBM Corp 


SCA 

1980* 1985 









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SCB 


Common Name : STAE Control Block 

Macro ID : IHASCB 

DSECT Name : SCB 

Created by : IEAVSTAO 

Subpool and Key : 255 and key 0 

Size 5 20 bytes 

Pointed to by : TCBSTABB field of the TCB data area 
SCBCHAIN field of the SCB data area 
Serialization : None 

Function : The SCB is used to make STA/ESTA recovery known to the system. 


OFFSETS_TYPE 


m 




krinl.g 




(0) STRUCTURE 24 SCB 

(0) ADDRESS 4 SCBCHAIN POINTER TO NEXT SCB ON CHAIN 

(4) ADDRESS 4 SCBEXIT POINTER TO USER WRITTEN EXIT ROUTINE 


8 (8) ADDRESS 4 SCBPARM ADDRESS OF PARAMETER LIST FOR STA EXIT 


8 (8) CHARACTER 1 SCBFL6S1 

1. SCBSTAI 

.1.. SCBSTAR 


SCBDUMMY 



SCBESTAE 

SCBTOKEN 

SCBASYNC 

SCBIOPRC 


.1. SCBNOIOP 

.1 SCBHALT 

9 (9) ADDRESS 3 SCBPARMA 


FIRST FLAG BYTE... 

STAI SCB 

STAR SCB SCB IS FOR STAE IF NEITHER 
SCBSTAI NOR SCBSTAR BIT IS SET ON 
DUMMY SCB (WILL NOT BE SCHEDULED) X'10' 
(RESERVED) X'08' (RESERVED) 

ESTAE INDICATOR 

ESTAE ESTABLISHED WITH TOKEN 

ALLOW ASYNCHRONOUS INTERRUPTS 

I/O PROCESSING OPTION* BITS 6 AND 7— 00 

QUIESCE I/O 01 HALT I/O 10 BYPASS I/O 

INTERVENTION 11 (RESERVED) 

BYPASS I/O INTERVENTION 
HALT I/O 

ADDRESS OF PARAMETER LIST FOR STA EXIT 


SCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980; 1985 


SCB 

Data Area Descriptions 9 








Contains Restricted Materials of IBM 
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OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


12 

(C) ADDRESS 

4 

SCBONNR 

TCB/RB ADDRESS CONTROLLING THIS SCB 

12 

(C) CHARACTER 

1 

SCBFLGS2 

SECOND FLAG BYTE... 


1 • « • •••• 



RESERVED 


• It* • • t • 


SCBXCTL2 

RETAIN THIS SCB ACROSS XCTL X'40' (RE¬ 
SERVED) 


» « 1 • •••• 



RESERVED 


• ••1 • • • • 


SCBINUSE 

THIS SCB IN USE X*08 f (RESERVED) X'04' 
(RESERVED) 


• •«* 1 • • • 



RESERVED 


• • • • • 1 * • 



RESERVED 


• ••• » « 1 « 


SCBKEY0 

USER IN KEY 0 


• * « • i • * 1 


SCBSUPER 

USER IN SUPERVISOR MODE 

13 

(D) ADDRESS 

3 

SCB0WNRA 

RB ADDRESS IF STAE/STAR, TCB ADDRESS IF 
STAI. 

16 

(10) ADDRESS 

4 

SCBDATA 

FLAGS AND DATA FIELD 

16 

(10) CHARACTER 

1 

SCBFL6S3 

OPTION FLAGS 


1 t » • t • • • 


SCBSTAUT 

(E)STAE REQUESTOR IS AUTHORIZED 


• 1 • • • • * • 


SCBTERMI 

AUTHORIZED FOR SPECIAL TERM PROCESSING 


• • 1 • • • • • 


SCBRECRD 

ON INDICATES ERROR RECORD TO BE WRITTEN 
TO SYS1.L0GREC 


•••1 •••• 


SCBCNCEL 

SCB IS LOGICALLY CANCELED 


•••• li«* 


SCBPRNTR 

SCB PREVIOUSLY ENTERED 


• ••• «1 • • 


SCBBRNTR 

BRANCH ENTERED SVC 60 


• • • • • • X • 


SCBTERM0 

TERM PROCESSING ONLY 


• ••• • • * 1 



RESERVED 

17 

(11) CHARACTER 

1 

SCBPKEY 

PROGRAM KEY 

18 

(12) CHARACTER 

1 

SCBID 

SCB IDENTIFIER 

19 

(13) CHARACTER 

1 

SCBRSVRE 

RESERVED 

20 

(14) ADDRESS 

4 

SCBXPTR 

POINTER TO SCB EXTENSION 


SCB 

1,0 MVS/370 Debug Hdbk Vol 5 


SCB 

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SCCB 


Common Name : Service Call Control Block 
Macro ZD : IHASCCB 
DSECT Name : 

Created by : IEAIPL00 

Subpool and Key : Caller's area - Caller's subpool and key 
CVTSCPIN are - subpool 245 and key 0 

Size : 

bytes 

Pointed to by : CVTSCPIN field of the CVT data area 
Caller's pointer 
serialization : N/A 

Function : Maps the common fields of the SCCB for all service processor commands 
and the data area returned from the service processor architecture 
command STORE SCP INFO. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) STRUCTURE 

m 

SCCB 

SERVICE CALL CONTROL BLOCK. 

0 

(0) CHARACTER 

8 

SCCBHEAD 

SERVICE CALL CONTROL BLOCK HEADER. 

0 

(0) SIGNED 

2 

SCCBLNG 

LENGTH OF THE ENTIRE SCCB (MAXIMUM 

2 

(2) CHARACTER 

1 

SCCBFLAG 

4096). 

CALLER FLAGS. COMMAND DEPENDENT. 

3 

(3) CHARACTER 

3 

SCCBR003 

RESERVED. 

6 

(6) SIGNED 

2 

SCCBRSP 

SERVICE PROCESSOR RESPONSE. 

6 

(6) HEX 

1 

SCCBREAS 

SERVICE PROCESSOR REASON CODE. 

7 

(7) HEX 

1 

SCCBRCC 

SERVICE PROCESSOR RESPONSE CLASS CODE. 

8 

(8) CHARACTER 

4088 

SCCBCMDD 

VARIABLE LENGTH COMMAND DEPENDENT DATA. 

4096 

(1000) FLOATING 

8 

SCCBEND 

END OF SCCB. 

COMMAND DEPENDENT DATA 
READ SCP INFO COMMAND. 

FROM 




SCCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SCCB 

Data Area Descriptions 11 










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0EE3EIS_nei_ LENGTH NAME _ DESCRIPTION 


8 

(8) SIGNED 

4 

SCCBSCPI 

MAPPING OF SCCB COMMAND DEPENDENT DATA 
FIELD, SCCBCMDD, FOR SERVICE PROCESSOR 
COMMAND READ SCP INFO. 

8 

(8) HEX 

2 

SCCBSAR 

REAL STORAGE ADDRESS RANGE. MAXIMUM STO¬ 
RAGE INCREMENT NUMBER INSTALLED. 

10 

(A) HEX 

1 

SCCBSAI 

REAL STORAGE ADDRESS INCREMENT, IN UNITS 
OF 1M. 

11 

(B) HEX 

1 

SCCBSBS 

REAL STORAGE BLOCK SIZE IN UNITS OF IK. 

12 

(C) HEX 

2 

SCCBSII 

REAL STORAGE INCREMENT BLOCK INTERLEAVE 
INTERVAL. 

14 

(E) CHARACTER 

2 

SCCBR00E 

RESERVED. 

16 

(10) SIGNED 

2 

SCCBNCPS 

NUMBER OF CPUS INSTALLED. 

18 

(12) SIGNED 

2 

SCCB0CP 

SCCB OFFSET TO CPU DATA ARRAY MAPPED BY 
SCCBCP . 

20 

(14) SIGNED 

2 

SCCBNHSA 

NUMBER OF HSAS. 

22 

(16) SIGNED 

2 

SCCBOHSA 

SCCB OFFSET TO HSA DATA ARRAY MAPPED BY 
SCCBHSA. 

24 

(18) CHARACTER 

8 

SCCBPARM 

LOAD PARAMETER INFORMATION FROM SERVICE 
PROCESSOR. 

32 

(20) CHARACTER 

16 

SCCBR020 

RESERVED. 

48 

(30) CHARACTER 

8 

SCCBIFM 

INSTALLED FACILITY MAP. 

48 

(30) CHARACTER 

1 

SCCBIFM1 

INSTALLED FACILITY MAP BYTE 1. 


1 . 


SCCBCHSI 

"X'80'" CHANNEL SET INFORMATION 
INSTALLED. 


••X* • • *• 


SCCBCHPR 

"X'20*" CHANNEL PATH RECONFIGURATION 
INSTALLED. 


« * * » 1 • • • 


SCCBCPUI 

"X'08'" CPU INFORMATION INSTALLED. 


• • 1 t • 


SCCBCPUR 

"X'04* n CPU RECONFIGURATION INSTALLED. 

49 

(31) CHARACTER 

1 

SCCBIFM2 

INSTALLED FACILITY MAP BYTE 2. 


1 . 


SCCBSGNL 

"X•80'" SIGNAL ALARM INSTALLED. 


• *1 • i * • • 


SCCBSTST 

"X'20'" STORE STATUS ON LOAD INSTALLED. 


SCCB 

12 


MVS/370 Debug Hdbk Vol 5 


SCCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS _HE!_ LENGTH NAME _ DESCRIPTION 



• ••X lilt 


SCCBRSTR 


"X'10*" RESTART REASONS INSTALLED. 


• 1 » « « 


SCCBITRC 


n X'08'" INSTRUCTION ADDRESS TRACE BUFFER 
INSTALLED. 


• ••• tilt 


SCCBLPRM 


"X*04 ,w LOAD PARAMETER INSTALLED. 


• ••• • 1 1 < 


SCCBWDAT 


"X'02*" READ AND WRITE DATA INSTALLED. 

50 

(32) CHARACTER 

1 

SCCBIFM3 


INSTALLED FACILITY MAP BYTE 3. 


1 • • « • t • i 


SCCBSIR 


"X*80»" STORAGE INCREMENT RECONFIGURA¬ 
TION INSTALLED. 


• 1 • « • • • • 


SCCBSEI 


"X'40 ,n STORAGE ELEMENT INFORMATION 
INSTALLED. 


••X* •••• 


SCCBSER 


"X'20'" STORAGE ELEMENT RECONFIGURATION 
INSTALLED. 


• • * 1 •••« 


SCCBCARS 


"X'lO*" COPY AND REASSIGN STORAGE 
INSTALLED. 

51 

(33) CHARACTER 

5 

SCCBIFM4 


INSTALLED FACILITY MAP BYTES 4-8. 

56 

(38) CHARACTER 

72 

SCCBR038 


RESERVED. 

128 

(80) HEX 

1 

SCCBDATA 


DATA ARRAYS. 

ARRAY 

OF CPU INFORMATION 

FROM READ SCP 

INFO 

COMMAND. 

(SCCBNCPS ENTRIES. ENTRIES BEGIN AT ADDR(SCCB)+SCCBOCP.) 


0 

(0) STRUCTURE 

E 

SCCBCP 


CPU INFORMATION ENTRY. 

0 

(0) HEX 

i 

SCCBCPA 


CPU ADDRESS. 

1 

(1) HEX 

i 

SCCBT0D8 


TOD CLOCK NUMBER FOR THIS CPU. 

2 

(2) HEX 

14 



RESERVED. 

ARRAY 

OF HSA INFORMATION 

FROM READ SCP 

INFO 

COMMAND. 

(SCCBNHSA ENTRIES. ENTRIES BEGIN AT ADDR(SCCB)+SCCBOHSA.) 


0 

(0) STRUCTURE 

0 

SCCBHSA 


HSA INFORMATION ENTRY. 


SCCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SCCB 

Data Area Descriptions 13 











Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


■ENGTH 


DESCRIPTION 


0 (0) HEX 2 SCCBHSSZ SIZE OF THIS HSA IN UNITS OF 4K. 

2 (2) HEX 4 SCCBAHSA ADDRESS OF THIS HSA. 


SCCB 

14 


MVS/370 Debug Hdbk Vol 5 


SCCB 

IC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SCCW 


Common Name t Swap Channel Command Work Area 
Macro ID : ILRSCCW 
DSECT Name : SCCN 
Created by : ILRASRIM 

Subpool and Key : Nucleus buffer and key 0 
Size : 520 bytes 

Pointed to by : IORSCCW field of the IORB data area 
SCCWSCCW field of the SCCW data area 
SARSCCNQ field of the SART data area 

Serialization i The SCCW is serialized by the SCCW available queue. The 
SCCW is kept on an available queue and removed when needed. 

Function s SCCW describes the string of channel command words which are 
passed by the I/O manager to the channel for I/O processing of a swap 
set. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) 

STRUCTURE 

520 

SCCW 

BASE STRUCTURE IS SCCW 

0 

(0) 

CHARACTER 

208 

SCCWHDR 

HEADER FOR SCCW 

0 

(0) 

CHARACTER 

4 

SCCWID 

SCCW IDENTIFIER 'SCCW' 

4 

(4) 

UNSIGNED 

1 

SCCWSECT 

SECTOR VALUE FOR SET SECTOR 

5 

(5) 

BITSTRING 

1 

SCCWFLAG 

SCCW FLAGS 


1... 

• • * « 


SCCWERR 

1/0 ERROR FLAG 1 = THIS SCCW SUFFERED AN 
I/O ERROR 0 = NO ERROR THIS SCCW 


.111 1111 



RESERVED 

6 

(6) 

CHARACTER 

6 


RESERVED 

12 

(C) 

ADDRESS 

4 

SCCWSCCW 

POINTER TO NEXT SCCW ON CHAIN 

16 

(10) 

ADDRESS 

4 

SCCWAIA 

POINTER TO FIRST AIA OF THE GROUP USING 
THIS SCCW 

20 

(14) 

ADDRESS 

4 

SCCWIORB 

ADDRESS OF IORB THAT THIS SCCW IS ASSO- 


CIATED WITH 


SCCW 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SCCW 

Data Area Descriptions 15 









Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS_IYRE_LEN GTH NAME _ DESCRIPTION 


SPECIAL FIELDS NOT PRESENT IN A PCCH HEADER 


24 

(18) 

ADDRESS 

4 

SCCWLCCW 

POINTER TO LAST R/W CCW IN USE 

28 

(1C) 

UNSIGNED 

4 

SCCWSVOA 

SAVE AREA FOR SEARCH OP CODE AND ARGU¬ 
MENT ADDRESS WHEN SEARCH CCW CONVERTED 

TO TIC FOR CCW CHAINING 

I DAW 

FIELDS 

FOR THE SCCWS 




32 

(20) 

CHARACTER 

96 

SCCWIDAW 

IDAWS FOR EXTENDED SWAP 

32 

(20) 

ADDRESS 

4 

SCCWIDW1 

FIRST 2K ADDR 

36 

(24) 

ADDRESS 

4 

SCCWIDH2 

SECOND 2K ADDR 

SEARCH ARGUMENT SECTION 

OF SWAP CHANNEL 

COMMAND WORKAREA 


128 

(80) 

CHARACTER 

64 

SCCWSARG 

SEARCH ARGUMENTS SECTION 

128 

(80) 

CHARACTER 

1 

SCCWM 

EXTENT NUMBER OF SEEK ADDRESS 

129 

(81) 

CHARACTER 

2 

SCCWBB 

BIN NUMBER OF SEEK ADDRESS 

131 

(83) 

CHARACTER 

60 

SCCWSRH 

TWELVE COPIES OF CCHHR 

131 

(83) 

CHARACTER 

4 

SCCWCCHH 

CYLINDER AND HEAD 

131 

(83) 

CHARACTER 

2 

SCCWCC 

CYLINDER 

133 

(85) 

CHARACTER 

2 

SCCWHH 

HEAD 

135 

(87) 

CHARACTER 

1 

SCCWR 

RECORD 

191 

(BF) 

CHARACTER 

1 

SCCWRSV1 

RESERVED 


SCCW 

16 


MVS/370 Debug Hdbk Vol 5 


SCCW 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 












Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


SET PAGING PARAMETERS DATA AREA 


192 

(CO) 

CHARACTER 

m 

SCCWSPPD 

SET PAGING PARAMETERS DATA 

192 

(CO) 

CHARACTER 

i 

SCCWSPFL 

SET PAGING PARAMETER FLAGS 


1.. 

• sit* 


SCCWSPSQ 

"SEQUENTIAL READ" INDICATOR 


.1. 

• • t • t 


SCCWSPRO 

"READ ONCE" INDICATOR 

193 

(Cl) 

CHARACTER 

i 

SCCWSPBC 

SET PAGING PARAMETER BLOCK COUNT 

194 

(C2) 

CHARACTER 

2 

SCCWSPCA 

SET PAGING PARAMETER BASE CYLINDER 
ADDRESS ALWAYS ZERO 

196 

(C4) 

CHARACTER 

2 

SCCNSPR1 

RESERVED FOR SET PAGING PARAMETERS 

198 

(C6) 

CHARACTER 

4 

SCCWSPSK 

SET PAGING PARAMETER SEEK ADDRESS 

202 

(CA) 

CHARACTER 

6 

SCCWRSV2 

RESERVED 

CCW SECTION 

OF SWAP CHANNEL 

COMMAND MORKAREA 


208 

(DO) 

CHARACTER 

312 

SCCWCCW 

CHANNEL COMMAND SECTION 

208 

(DO) 

CHARACTER 

8 

SCCWSEEK 

FULL SEEK CCW 

208 

(DO) 

CHARACTER 

1 

SCCWSKOP 

SEEK OP CODE 

209 

(Dl) 

ADDRESS 

3 

SCCWSKAD 

SEEK CCW ADDRESS 

212 

(D4) 

CHARACTER 

4 

SCCWFGCT 

SEEK FLAGS AND COUNT 

216 

(D8) 

CHARACTER 

8 

SCCWSSEC 

SET SECTOR CCW 

E9 

(D8) 

CHARACTER 

1 

SCCWSSOP 

SET SECTOR OP CODE 

H 

(D9) 

ADDRESS 

3 

SCCWSSAD 

SET SECTOR CCW ADDRESS 

220 

(DC) 

CHARACTER 

4 

SCCWFLCT 

SET SECTOR FLAGS AND COUNT 


sccw 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SCCW 

Data Area Descriptions 17 














Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


224 

(E0) 

CHARACTER 

288 

SCCWSLOT 

12 SETS OF THREE CCW'S 

224 

(EO) 

CHARACTER 

8 

SCCWSRCH 

SEARCH CCN 

224 

(E0) 

CHARACTER 

1 

SCCWSR0P 

SEARCH OP FIELD 

225 

(El) 

ADDRESS 

3 

SCCWSRAD 

SEARCH ADDRESS FIELD 

228 

(E4) 

CHARACTER 

1 

SCCWSRFL 

SEARCH FLAG FIELD 

229 

(E5) 

CHARACTER 

1 



230 

(E6) 

UNSIGNED 

2 

SCCWSRCT 

SEARCH COUNT FIELD 

232 

(E8) 

CHARACTER 

8 

SCCWTIC 

TIC CCW 

232 

(E8) 

CHARACTER 

1 

SCCWTIOP 

TIC OP FIELD 

233 

(E9) 

ADDRESS 

3 

SCCWTIAD 

TIC ADDRESS FIELD 

236 

(EC) 

CHARACTER 

4 



240 

(F0) 

CHARACTER 

8 

SCCWRW 

READ OR WRITE CCW 

240 

(F0) 

CHARACTER 

1 

SCCWRWOP 

READ/WRITE OP FIELD 

241 

(FI) 

ADDRESS 

3 

SCCWRWAD 

READ/WRITE ADDRESS FIELD 

244 

(F4) 

CHARACTER 

1 

SCCWRWFL 

READ/WRITE FLAG FIELD 

245 

(F5) 

CHARACTER 

1 



246 

(F6 ) 

UNSIGNED 

2 

SCCWRWCT 

READ/WRITE COUNT FIELD 

512 

(200) 

CHARACTER 

8 

SCCWLTIC 

LAST CCW USED TO TIC WHEN CHAINING TO 






ANOTHER SET OF CCWS 

512 

(200) 

CHARACTER 

1 

SCCNLTOP 

LAST TIC OP FIELD 

513 

(201) 

ADDRESS 

3 

SCCWLTAD 

LAST TIC ADDRESS FIELD 

516 

(204) 

CHARACTER 

4 



THIS FIELD IS DEFINED 

TO COMMONLY ADDRESS THE SCCWMBB FIELD 

AND 

THE FIRST SCCWSRH 

ITERATION. 


STRUCTURE OF CHANNEL PROGRAM 

FOR EXTENDED CKD ARCHITECTURES 


SCCW 

18 


MVS/370 Debug Hdbk Vol 5 


SCCW 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 










Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


208 

(DO) 

STRUCTURE 

16 

SCCWSPP 

SET PAGING PARAMETERS AND TIC CCW'S 

208 

(DO) 

CHARACTER 

8 

SCCWSETP 

SPP CCW 

208 

(DO) 

CHARACTER 

1 

SCCWSPOP 

SET PAGING PARAMETER OP CODE 

209 

(Dl) 

ADDRESS 

3 

SCCWSPAD 

SET PAGING PARAMETER ADDRESS 

212 

(D4) 

CHARACTER 

2 

SCCWSPFG 

SET PAGING PARAMETER FLAGS 

214 

(D6) 

CHARACTER 

2 

SCCWSPCT 

SET PAGING PARAMETER COUNT 

216 

(D8) 

CHARACTER 

8 

SCCWSPTC 

TIC CCW 

216 

(D8) 

CHARACTER 

1 

SCCWSPTO 

TIC OP FIELD 

217 

(D9) 

ADDRESS 

3 

SCCWSPTA 

TIC ADDR FIELD 

220 

(DC) 

CHARACTER 

2 

SCCWSTFG 

TIC FLAG FIELD 

222 

(DE) 

CHARACTER 

2 

SCCWSTCT 

TIC COUNT FIELD 

128 

(80) 

STRUCTURE 

40 

SCCWDAT 

EXTENDED CKD DATA 

128 

(80) 

CHARACTER 

1 

SCCWEM 

M OF SEEK ADDRESS 

129 

(81) 

CHARACTER 

2 

SCCWEBB 

BB OF SEEK ADDRESS 

131 

(83) 

CHARACTER 

5 

SCCWESRH 

CCHHR ECKD SEARCH 

131 

(83) 

CHARACTER 

4 

SCCWESEK 

CCHH ECKD SEEK 

135 

(87) 

CHARACTER 

1 

SCCWER 

RECORD 

136 

(88) 

CHARACTER 

16 

SCCWDEFD 

DEFINE EXTENT DATA 

136 

(88) 

CHARACTER 

1 

SCCWDMSK 

DEFINE EXTENT MASK BYTE 

137 

(89) 

CHARACTER 

1 

SCCWDATR 

DEFINE EXTENT ATTRIBUTE BYTE 

138 

(8A) 

UNSIGNED 

2 

SCCWDSZ 

DEFINE EXTENT RECORD SIZE 

140 

(80 

CHARACTER 

4 

SCCWDRSV 

RESERVED 

144 

(90) 

CHARACTER 

4 

SCCNCCHB 

BEGINNING CCHH OF DEFINE EXTENT 

148 

(94) 

CHARACTER 

4 

SCCWCCHE 

ENDING CCHH OF DEFINE EXTENT 

152 

(98) 

CHARACTER 

16 

SCCWLOCD 

LOCATE RECORD DATA 

152 

(98) 

CHARACTER 

1 

SCCNLOPB 

LOCATE RECORD OPERATION BYTE 


SCCW 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SCCW 

Data Area Descriptions 19 












Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OEF SETS _IYES_ LENGTH NAME _ DESCRIPTION 


153 

(99) CHARACTER 

1 

SCCWLAUX 

LOCATE RECORD AUXILIARY BYTE 

154 

(9A) UNSIGNED 

2 

SCCWLREC 

NUMBER OF RECORDS 

156 

(90 CHARACTER 

4 

SCCHLSEK 

SEEK ADDRESS 

160 

(AO) CHARACTER 

5 

SCCWLSRC 

SEARCH ARGUMENT 

165 

(A5) CHARACTER 

1 

SCCWLSEC 

SECTOR NUMBER 

166 

(A6) UNSIGNED 

2 

SCCWLTRN 

TRANSFER LENGTH FACTOR 

208 

(DO) STRUCTURE 

120 

SCCWECCW 

EXTENDED CKD CCW'S 

208 

(DO) CHARACTER 

8 

SCCHDEFE 

DEFINE EXTENT CCW 

208 

(DO) CHARACTER 

1 

SCCWDEOP 

DEFINE EXTENT OP CODE 

209 

(Dl) ADDRESS 

3 

SCCWDEAD 

DEFINE EXTENT DATA ADDRESS 

212 

(D4) CHARACTER 

2 

SCCWDEFG 

DEFINE EXTENT FLAG 

214 

(D6) UNSIGNED 

2 

SCCWDECT 

DEFINE EXTENT COUNT 

216 

(D8) CHARACTER 

8 

SCCWLOCR 

LOCATE RECORD CCH 

216 

(D8) CHARACTER 

1 

SCCHLROP 

LOCATE RECORD OP CODE 

217 

(D9) ADDRESS 

3 

SCCHLRAD 

LOCATE RECORD DATA ADDRESS 

220 

(DC) CHARACTER 

2 

SCCHLRFG 

LOCATE RECORD FLAG 

222 

(DE) UNSIGNED 

2 

SCCHLRCT 

LOCATE RECORD COUNT 

224 

(EO) CHARACTER 

96 

SCCWRDWT 

12 READ OR WRITE CCWS 

224 

(EO) CHARACTER 

1 

SCCNRDHO 

READ/WRITE OP CODE 

225 

(El) ADDRESS 

3 

SCCWRDWA 

READ/WRITE DATA ADDRESS 

228 

(E4) CHARACTER 

2 

SCCWRDWF 

READ/WRITE FLAGS 

230 

(E6) UNSIGNED 

2 

SCCWRDWC 

READ/WRITE COUNT 

320 

(140) CHARACTER 

8 

SCCHNOP 

NOP/TIC CCW CHANGED TO TIC WHEN CHAINING 
TO ANOTHER CCW, ELSE IS NOP 

320 

(140) CHARACTER 

1 

SCCHN 

NOP/TIC OP CODE 

321 

(141) ADDRESS 

3 

SCCHNAD 

NOP/TIC CCW ADDRESS 

324 

(144) CHARACTER 

2 

SCCWFG 

NOP/TIC FLAGS 


SCCW 

20 


MVS/370 Debug Hdbk Vol 5 


SCCW 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS _ TYPE LENGTH NAME _ B ESfiKEIIflll 


326 

(146) UNSIGNED 

2 

SCCWNCT 

NOP/TIC COUNT 

208 

(DO) STRUCTURE 

16 

SCCWSPP 

SET PAGING PARAMETERS AND TIC CCW'S 

208 

(DO) CHARACTER 

8 

SCCWSETP 

SPP CCW 

208 

(DO) CHARACTER 

1 

SCCWSPOP 

SET PAGING PARAMETER OP CODE 

209 

(Dl) ADDRESS 

3 

SCCWSPAD 

SET PAGING PARAMETER ADDRESS 

212 

(D4) CHARACTER 

2 

SCCWSPFG 

SET PAGING PARAMETER FLAGS 

214 

(D6) CHARACTER 

2 

SCCWSPCT 

SET PAGING PARAMETER COUNT 

216 

(D8) CHARACTER 

8 

SCCWSPTC 

TIC CCW 

216 

(D8) CHARACTER 

1 

SCCWSPTO 

TIC OP FIELD 

217 

(D9) ADDRESS 

3 

SCCWSPTA 

TIC ADDR FIELD 

220 

(DC) CHARACTER 

2 

SCCWSTFG 

TIC FLAG FIELD 

222 

(DE) CHARACTER 

2 

SCCWSTCT 

TIC COUNT FIELD 

0 

(0) STRUCTURE 

520 

SCCW 


HEADER 

SECTION OF SWAP 

CHANNEL COMMAND 

WORKAREA 


0 

(0) CHARACTER 

208 

SCCWHDR 

SCCW IDENTIFIER 'SCCW' 

0 

(0) CHARACTER 

4 

SCCWID 

SECTOR VALUE FOR SET SECTOR 

4 

(4) UNSIGNED 

1 

SCCWSECT 

SCCW FLAGS 

5 

(5) BITSTRING 

1 

SCCWFLAG 

I/O ERROR FLAG 1 = THIS SCCW SUFFERED AN 
I/O ERROR 0 = NO ERROR THIS SCCW 


1«« « .«. * 

.111 1111 


SCCWERR 

RESERVED 

6 

(6) CHARACTER 

6 


POINTER TO NEXT SCCW ON CHAIN 

12 

(C) ADDRESS 

4 

SCCWSCCW 

POINTER TO FIRST AIA OF THE GROUP USING 
THIS SCCW 


SCCW 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SCCW 

Data Area Descriptions 21 














Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SEES1IS_ mi _LE NGTH NA ME _ DESCRIPTION 

16 (10) ADDRESS 4 SCCWAIA 

20 (14) ADDRESS 4 SCCWI0RB 

SPECIAL FIELDS NOT PRESENT IN A PCCH HEADER 


24 (18) ADDRESS 4 SCCHLCCH SAVE AREA FOR SEARCH OP CODE AND ARGU¬ 

MENT ADDRESS WHEN SEARCH CCW CONVERTED 
TO TIC FOR CCW CHAINING 


28 (1C) UNSIGNED 4 SCCWSVOA 


IDAW FIELDS FOR THE SCCWS 


32 (20) CHARACTER 96 SCCWIDAW 


32 (20) ADDRESS 4 SCCWIDW1 SECOND 2K ADDR 


36 (24) ADDRESS 4 SCCWIDW2 


SEARCH ARGUMENT SECTION OF SWAP CHANNEL COMMAND WORKAREA 


128 

(80) 

CHARACTER 

64 

SCCWSARG 

EXTENT NUMBER 

OF SEEK ADDRESS 

128 

(80) 

CHARACTER 

1 

SCCWM 

BIN NUMBER OF 

SEEK ADDRESS 

129 

(81) 

CHARACTER. 

2 

SCCWBB 

TWELVE COPIES 

OF CCHHR 

131 

(83) 

CHARACTER 

60 

SCCWSRH 

CYLINDER AND HEAD 

131 

(83) 

CHARACTER 

4 

SCCWCCHH 

CYLINDER 


131 

(83) 

CHARACTER 

2 

SCCWCC 

HEAD 


133 

(85) 

CHARACTER 

2 

SCCWHH 

RECORD 


135 

(87) 

CHARACTER 

1 

SCCWR 

RESERVED 


191 

(BF) 

CHARACTER 

1 

SCCWRSV1 




SCCW 

22 


MVS/370 Debug Hdbk Vol 5 


SCCW 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 














Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


SET PAGING PARAMETERS DATA AREA 


192 

(CO) 

CHARACTER 

10 

SCCWSPPD 


192 

(CO) 

CHARACTER 

1 

SCCWSPFL 



1 .. 

• • • • • 


SCCWSPSQ 



.1. 

« * » ♦ • 


SCCWSPR0 

SET PAGING PARAMETER BLOCK COUNT 

193 

(Cl) 

CHARACTER 

1 

SCCNSPBC 


194 

(C2) 

CHARACTER 

2 

SCCNSPCA 


196 

(C4) 

CHARACTER 

2 

SCCWSPR1 


198 

(C6) 

CHARACTER 

4 

SCCWSPSK 


202 

(CA) 

CHARACTER 

6 

SCCWRSV2 


CCN SECTION 

OF SNAP CHANNEL 

COMMAND NORKAREA 


208 

(DO) 

CHARACTER 

312 

SCCWCCW 


208 

(DO) 

CHARACTER 

8 

SCCWSEEK 

SEEK OP CODE 

208 

(DO) 

CHARACTER 

1 

SCCWSKOP 

SEEK CCW ADDRESS 

209 

(Dl) 

ADDRESS 

3 

SCCNSKAD 

SEEK FLAGS AND COUNT 

212 

(D4) 

CHARACTER 

4 

SCCWFGCT 

SET SECTOR CCM 

216 

(D8) 

CHARACTER 

8 

SCCNSSEC 

SET SECTOR OP CODE 

216 

(D8) 

CHARACTER 

1 

SCCWSSOP 

SET SECTOR CCN ADDRESS 

217 

(D9) 

ADDRESS 

3 

SCCNSSAD 

SET SECTOR FLAGS AND COUNT 

220 

(DC) 

CHARACTER 

4 

SCCWFLCT 

12 SETS OF THREE CCN'S 

224 

(E0) 

CHARACTER 

288 

SCCWSLOT 



SCCW 

LCZ8-1389-0 (c) Copyright IBM Corp 1980, 1985 


SCCW 

Data Area Descriptions 23 
















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


fiEE SE T S _IYEI_ LENGTH NAME _ DESCRIPTION 


224 

(E0) CHARACTER 

8 

SCCHSRCH 

SEARCH OP FIELD 

224 

(E0) CHARACTER 

1 

SCCWSROP 

SEARCH ADDRESS FIELD 

225 

(El) ADDRESS 

3 

SCCWSRAD 

SEARCH FLAG FIELD 

228 

(E4) CHARACTER 

1 

SCCHSRFL 


229 

(E5) CHARACTER 

1 


SEARCH COUNT FIELD 

230 

(E6) UNSIGNED 

2 

SCCWSRCT 

TIC CCW 

232 

(E8) CHARACTER 

8 

SCCWTIC 

TIC OP FIELD 

232 

(E8) CHARACTER 

1 

SCCWTIOP 

TIC ADDRESS FIELD 

233 

(E9) ADDRESS 

3 

SCCWTIAD 


236 

(EC) CHARACTER 

4 


READ OR HRITE CCH 

240 

(F0) CHARACTER 

8 

SCCWRW 

READ/WRITE OP FIELD 

240 

(F0) CHARACTER 

1 

SCCWRWOP 

READ/WRITE ADDRESS FIELD 

241 

(FI) ADDRESS 

3 

SCCWRWAD 

READ/WRITE FLAG FIELD 

244 

(F4) CHARACTER 

1 

SCCWRWFL 


245 

(F5) CHARACTER 

1 


READ/WRITE COUNT FIELD 

246 

(F6) UNSIGNED 

2 

SCCWRWCT 

LAST CCW USED TO TIC WHEN CHAINING TO 
ANOTHER SET OF CCWS 

512 

(200) CHARACTER 

8 

SCCWLTIC 


512 

(200) CHARACTER 

1 

SCCWLTOP 

LAST TIC ADDRESS FIELD 

513 

(201) ADDRESS 

3 

SCCWLTAD 


516 

(204) CHARACTER 

4 



THIS 

FIELD IS DEFINED 

TO COMMONLY ADDRESS 

THE SCCWMBB FIELD 

AND THE FIRST SCCHSRH 

ITERATION. 


STRUCTURE OF CHANNEL PROGRAM 

FOR EXTENDED 

CKD ARCHITECTURES 

128 

(80) STRUCTURE 

40 

SCCWDAT 



SCCW 

24 


MVS/370 Debug Hdbk Vol 5 


SCCN 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 













Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


128 

(80) 

CHARACTER 

1 

SCCWEM 

BB OF SEEK ADDRESS 

129 

(81) 

CHARACTER 

2 

SCCWEBB 

CCHHR ECKD SEARCH 

131 

(83) 

CHARACTER 

5 

SCCWESRH 

CCHH ECKD SEEK 

131 

(83) 

CHARACTER 

4 

SCCWESEK 

RECORD 

135 

(87) 

CHARACTER 

1 

SCCWER 

DEFINE EXTENT DATA 

136 

(88) 

CHARACTER 

16 

SCCNDEFD 

DEFINE EXTENT MASK BYTE 

136 

(88) 

CHARACTER 

1 

SCCWDMSK 


137 

(89) 

CHARACTER 

1 

SCCWDATR 


138 

(8A) 

UNSIGNED 

2 

SCCNDSZ 


140 

(80 

CHARACTER 

4 

SCCWDRSV 

BEGINNING CCHH OF DEFINE EXTENT 

144 

(90) 

CHARACTER 

4 

SCCWCCHB 


148 

(94) 

CHARACTER 

4 

SCCNCCHE 


152 

(98) 

CHARACTER 

16 

SCCWLOCD 

LOCATE RECORD OPERATION BYTE 

152 

(98) 

CHARACTER 

1 

SCCWLOPB 


153 

(99) 

CHARACTER 

1 

SCCWLAUX 


154 

(9A) 

UNSIGNED 

2 

SCCWLREC 

SEEK ADDRESS 

156 

(90 

CHARACTER 

4 

SCCWLSEK 

SEARCH ARGUMENT 

160 

(AO) 

CHARACTER 

5 

SCCWLSRC 

SECTOR NUMBER 

165 

(A5) 

CHARACTER 

1 

SCCWLSEC 

TRANSFER LENGTH FACTOR 

166 

(A6) 

UNSIGNED 

2 

SCCWLTRN 


208 

(DO) 

STRUCTURE 

120 

SCCWECCW 


208 

(DO) 

CHARACTER 

8 

SCCHDEFE 

DEFINE EXTENT OP CODE 

208 

(DO) 

CHARACTER 

1 

SCCWDEOP 

DEFINE EXTENT DATA ADDRESS 

209 

(Dl) 

ADDRESS 

3 

SCCWDEAD 


212 

(D4) 

CHARACTER 

2 

SCCWDEFG 

DEFINE EXTENT COUNT 

214 

(D6) 

UNSIGNED 

2 

SCCWDECT 

LOCATE RECORD CCH 

216 

(D8) 

CHARACTER 

8 

SCCWLOCR 

LOCATE RECORD OP CODE 


SCOW 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


scat 

Data Area Descriptions 25 














Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SEESHS _ mi _ LENGTH NAME _ DESCRIPTION 


216 

217 

(D8) 

(D9) 

CHARACTER 

ADDRESS 

1 

3 

SCCWLROP 

SCCWLRAD 

LOCATE RECORD DATA ADDRESS 

220 

(DC) 

CHARACTER 

2 

SCCHLRFG 

LOCATE RECORD COUNT 

222 

(DE) 

UNSIGNED 

2 

SCCWLRCT 

12 READ OR WRITE CCWS 

224 

(E0) 

CHARACTER 

96 

SCCWRDWT 


224 

(E0) 

CHARACTER 

1 

SCCWRDWO 

READ/WRITE DATA ADDRESS 

225 

(El) 

ADDRESS 

3 

SCCWRDWA 


228 

(E4) 

CHARACTER 

2 

SCCHRDHF 

READ/WRITE COUNT 

230 

(E6) 

UNSIGNED 

2 

SCCWRDWC 

NOP/TIC CCW CHANGED TO TIC WHEN CHAINING 
TO ANOTHER CCW, ELSE IS NOP 

320 

(140) 

CHARACTER 

8 

SCCWNOP 


320 

(140) 

CHARACTER 

1 

SCCWN 

NOP/TIC CCW ADDRESS 

321 

(141) 

ADDRESS 

3 

SCCWNAD 

NOP/TIC FLAGS 

324 

(144) 

CHARACTER 

2 

SCCWFG 

NOP/TIC COUNT 

326 

(146) 

UNSIGNED 

2 

SCCHNCT 

A COMPILER INSERT 

128 

(80) 

STRUCTURE 

40 

SCCWDAT 

EXTENDED CKD DATA 

128 

(80) 

CHARACTER 

1 

SCCHEM 

M OF SEEK ADDRESS 

129 

(81) 

CHARACTER 

2 

SCCWEBB 

BB OF SEEK ADDRESS 

131 

(83) 

CHARACTER 

5 

SCCWESRH 

CCHHR ECKD SEARCH 

131 

(83) 

CHARACTER 

4 

SCCWESEK 

CCHH ECKD SEEK 

135 

(87) 

CHARACTER 

1 

SCCWER 

RECORD 

136 

(88) 

CHARACTER 

16 

SCCWDEFD 

DEFINE EXTENT DATA 

136 

(88) 

CHARACTER 

1 

SCCWDMSK 

DEFINE EXTENT MASK BYTE 

137 

(89) 

CHARACTER 

1 

SCCWDATR 

DEFINE EXTENT ATTRIBUTE BYTE 

138 

(8A) 

UNSIGNED. 

2 

SCCWDSZ 

DEFINE EXTENT RECORD SIZE 

140 

(80 

CHARACTER 

4 

SCCHDRSV 

RESERVED 

144 

(90) 

CHARACTER 

4 

SCCWCCHB 

BEGINNING CCHH OF DEFINE EXTENT 


SCCU 

26 


MVS/370 Debug Hdbk Vol 5 


SCCW 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 









Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


148 

(94) CHARACTER 

4 

SCCWCCHE 

ENDING CCHH OF DEFINE EXTENT 

152 

(98) CHARACTER 

16 

SCCWLOCD 

LOCATE RECORD DATA 

152 

(98) CHARACTER 

1 

SCCWLOPB 

LOCATE RECORD OPERATION BYTE 

153 

(99) CHARACTER 

1 

SCCWLAUX 

LOCATE RECORD AUXILIARY BYTE 

154 

(9A) UNSIGNED 

2 

SCCWLREC 

NUMBER OF RECORDS 

156 

(90 CHARACTER 

4 

SCCNLSEK 

SEEK ADDRESS 

160 

(AO) CHARACTER 

5 

SCCWLSRC 

SEARCH ARGUMENT 

165 

(A5) CHARACTER 

1 

SCCNLSEC 

SECTOR NUMBER 

166 

(A6) UNSIGNED 

2 

SCCWLTRN 

TRANSFER LENGTH FACTOR 

0 

(0) STRUCTURE 

520 

SCCW 


HEADER 

SECTION OF SWAP 

CHANNEL COMMAND 

MORKAREA 


0 

(0) CHARACTER 

208 

SCCWHDR 

SCCW IDENTIFIER 'SCCW' 

0 

(0) CHARACTER 

4 

SCCWID 

SECTOR VALUE FOR SET SECTOR 

4 

(4) UNSIGNED 

1 

SCCWSECT 

SCCW FLAGS 

5 

(5) BITSTRING 

1 

SCCWFLAG 

I/O ERROR FLAG 1 = THIS SCCW SUFFERED AN 





I/O ERROR 0 = NO ERROR THIS SCCW 


1. 

.111 1111 


SCCWERR 

RESERVED 

6 

(6) CHARACTER 

6 


POINTER TO NEXT SCCW ON CHAIN 

12 

(C) ADDRESS 

4 

SCCWSCCW 

POINTER TO FIRST AIA OF THE GROUP USING 
THIS SCCW 

16 

(10) ADDRESS 

4 

SCCWAIA 


20 

(14) ADDRESS 

4 

SCCWIORB 



SCCW 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SCCW 

Data Area Descriptions 27 
















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SEESHS_HE!_LEMSI H. NAME _ DESCRIPTION 


SPECIAL FIELDS NOT PRESENT IN A PCCW HEADER 


24 (18) ADDRESS 4 SCCWLCCW SAVE AREA FOR SEARCH OP CODE AND ARGU¬ 

MENT ADDRESS HHEN SEARCH CCH CONVERTED 
TO TIC FOR CCM CHAINING 


28 (1C) UNSIGNED 4 SCCWSVOA 


IDAM FIELDS FOR THE SCCHS 


32 (20) CHARACTER 96 SCCWIDAW 


32 (20) ADDRESS 4 SCCWIDW1 SECOND 2K ADDR 


36 (24) ADDRESS 4 SCCWIDW2 


SEARCH ARGUMENT SECTION OF SNAP CHANNEL COMMAND NORKAREA 


128 

(80) 

CHARACTER 

64 

SCCHSARG 

EXTENT NUMBER 

OF SEEK ADDRESS 

128 

(80) 

CHARACTER 

1 

SCCHM 

BIN NUMBER OF 

SEEK ADDRESS 

129 

(81) 

CHARACTER 

2 

SCCHBB 

TWELVE COPIES 

OF CCHHR 

131 

(83) 

CHARACTER 

60 

SCCNSRH 

CYLINDER AND HEAD 

131 

(83) 

CHARACTER 

4 

SCCNCCHH 

CYLINDER 


131 

(83) 

CHARACTER; 

2 

SCCNCC 

HEAD 


133 

(85) 

CHARACTER 

2 

SCCHHH 

RECORD 


135 

(87) 

CHARACTER 

1 

SCCHR 

RESERVED 


191 

(BF) 

CHARACTER 

1 

SCCWRSV1 




SCCW 

28 


MVS/370 Debug Hdbk Vol 5 


SCCW 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 198? 














Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS _EffiE_ LENGTH NAME _ DESCRIPTION 


SET PAGING PARAMETERS DATA AREA 


192 

(CO) 

CHARACTER 

10 

SCCWSPPD 


192 

(CO) 

CHARACTER 

1 

SCCWSPFL 



1.. 

• • • • • 


SCCWSPSQ 



.1. 

• • • • • 


SCCWSPRO 

SET PAGING PARAMETER BLOCK COUNT 

193 

(Cl) 

CHARACTER 

1 

SCCWSPBC 


194 

(C2) 

CHARACTER 

2 

SCCNSPCA 


196 

(C4) 

CHARACTER 

2 

SCCNSPR1 


198 

(C6) 

CHARACTER 

4 

SCCWSPSK 


202 

(CA) 

CHARACTER 

6 

SCCHRSV2 


CCH SECTION 

OF SWAP CHANNEL 

COMMAND WORKAREA 


208 

(DO) 

CHARACTER 

312 

SCCWCCW 


208 

(DO) 

CHARACTER 

8 

SCCHSEEK 

SEEK OP CODE 

208 

(DO) 

CHARACTER 

1 

SCCWSKOP 

SEEK CCW ADDRESS 


(Dl) 

ADDRESS 

3 

SCCWSKAD 

SEEK FLAGS AND COUNT 

212 

(D4) 

CHARACTER 

4 

SCCWFGCT 

SET SECTOR CCW 

216 

(D8) 

CHARACTER 

8 

SCCHSSEC 

SET SECTOR OP CODE 

216 

(D8) 

CHARACTER 

1 

SCCMSSOP 

SET SECTOR CCW ADDRESS 

217 

(D9) 

ADDRESS 

3 

SCCMSSAD 

SET SECTOR FLAGS AND COUNT 

220 

(DC) 

CHARACTER 

4 

SCCWFLCT 

12 SETS OF THREE CCW'S 

224 

(E0) 

CHARACTER 

288 

SCOWSLOT 



SCCW 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SCCW 

Data Area Descriptions 29 















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


fiE ESEIS _ mg _ LENGTH NAME _ DESCRIPTION 


224 

(E0) CHARACTER 

8 

SCCMSRCH 

SEARCH OP FIELD 

224 

(E0) CHARACTER 

1 

SCCWSROP 

SEARCH ADDRESS FIELD 

225 

(El) ADDRESS 

3 

SCCWSRAD 

SEARCH FLAG FIELD 

228 

(E4) CHARACTER 

1 

SCCWSRFL 


229 

(E5) CHARACTER 

1 


SEARCH COUNT FIELD 

230 

(E6) UNSIGNED 

2 

SCCWSRCT 

TIC CCW 

232 

(E8) CHARACTER 

8 

SCCWTIC 

TIC OP FIELD 

232 

(E8) CHARACTER 

1 

SCCWTIOP 

TIC ADDRESS FIELD 

233 

(E9) ADDRESS 

3 

SCCNTIAD 


236 

(EC) CHARACTER 

4 


READ OR WRITE CCW 

240 

(F0) CHARACTER 

8 

SCCWRW 

READ/WRITE OP FIELD 

240 

(F0) CHARACTER 

1 

SCCWRWOP 

READ/WRITE ADDRESS FIELD 

241 

(FI) ADDRESS 

3 

SCCWRWAD 

READ/WRITE FLAG FIELD 

244 

(F4) CHARACTER 

1 

SCCWRWFL 


245 

(F5) CHARACTER 

1 


READ/WRITE COUNT FIELD 

246 

(F6) UNSIGNED 

2 

SCCWRWCT 

LAST CCW USED TO TIC WHEN CHAINING TO 
ANOTHER SET OF CCWS 

512 

(200) CHARACTER 

8 

SCCWLTIC 


512 

(200) CHARACTER 

1 

SCCWLTOP 

LAST TIC ADDRESS FIELD 

513 

(201) ADDRESS 

3 

SCCWLTAD 


516 

(204) CHARACTER 

4 



THIS 

FIELD IS DEFINED 

TO COMMONLY ADDRESS 

THE SCCWMBB FIELD 

AND THE FIRST SCCHSRH 

ITERATION. 


STRUCTURE OF CHANNEL PROGRAM 

FOR EXTENDED 

CKD ARCHITECTURES 

208 

(DO) STRUCTURE 

16 

SCCNSPP 



sccw 

30 


MVS/370 Debug Hdbk Vol 5 


SCCW 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 













Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


208 

(DO) 

CHARACTER 

8 

SCCWSETP 

SET PAGING PARAMETER OP CODE 

208 

(DO) 

CHARACTER 

1 

SCCWSPOP 


209 

(Dl) 

ADDRESS 

3 

SCCWSPAD 


212 

(D4) 

CHARACTER 

2 

SCCWSPFG 


214 

(D6) 

CHARACTER 

2 

SCCWSPCT 


216 

(D8) 

CHARACTER 

8 

SCCWSPTC 

TIC OP FIELD 

wm 

(D8) 

CHARACTER 

1 

SCCWSPTO 

TIC ADDR FIELD 

;sa 

(D9) 

ADDRESS 

3 

SCCWSPTA 

TIC FLAG FIELD 

220 

(DC) 

CHARACTER 

2 

SCCWSTFG 

TIC COUNT FIELD 

222 

(DE) 

CHARACTER 

2 

SCCWSTCT 


208 

(DO) 

STRUCTURE 

120 

SCCWECCW 


208 

(DO) 

CHARACTER 

8 

SCCWDEFE 

DEFINE EXTENT OP CODE 

208 

(DO) 

CHARACTER 

1 

SCCWDEOP 

DEFINE EXTENT DATA ADDRESS 

209 

(Dl) 

ADDRESS 

3 

SCCMDEAD 


212 

(D4) 

CHARACTER 

2 

SCCNDEFG 

DEFINE EXTENT COUNT 

214 

(D6) 

UNSIGNED 

2 

SCCWDECT 

LOCATE RECORD CCW 

216 

(D8) 

CHARACTER 

8 

SCCWLOCR 

LOCATE RECORD OP CODE 

216 

(D8) 

CHARACTER 

1 

SCCWLROP 

LOCATE RECORD DATA ADDRESS 

217 

(D9) 

ADDRESS 

3 

SCCWLRAD 


220 

(DC) 

CHARACTER 

2 

SCCNLRFG 

LOCATE RECORD COUNT 

222 

(DE) 

UNSIGNED 

2 

SCCWLRCT 

12 READ OR WRITE CCWS 

224 

(E0) 

CHARACTER 

96 

SCCWRDWT 


224 

(E0) 

CHARACTER 

1 

SCCHRDW0 

READ/NRITE DATA ADDRESS 

225 

(El) 

ADDRESS 

3 

SCCWRDWA 



SCCW 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SCCW 

Data Area Descriptions 31 















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


-QEF9ETS_IYEI_fclMg IH NAME _ description 


228 

(E4) 

CHARACTER 

2 

SCCWRDWF 

READ/WRITE COUNT 


230 

(E6) 

UNSIGNED 

2 

SCCWRDWC 

NOP/TIC CCW CHANGED TO TIC WHEN 
TO ANOTHER CCW, ELSE IS NOP 

CHAINING 

320 

(140) 

CHARACTER 

8 

SCCWN0P 



320 

(140) 

CHARACTER 

1 

SCCWN 

NOP/TIC CCW ADDRESS 


321 

(141) 

ADDRESS 

3 

SCCWNAD 

NOP/TIC FLAGS 


324 

(144) 

CHARACTER 

2 

SCCWFG 

NOP/TIC COUNT 


326 

(146) 

UNSIGNED 

2 

SCCWNCT 

A COMPILER INSERT 


208 

(DO) 

STRUCTURE 

120 

SCCWECCW 

EXTENDED CKD CCW'S 


208 

(DO) 

CHARACTER 

8 

SCCWDEFE 

DEFINE EXTENT CCW 


208 

(DO) 

CHARACTER 

1 

SCCWDE0P 

DEFINE EXTENT OP CODE 


209 

(Dl) 

ADDRESS 

3 

SCCWDEAD 

DEFINE EXTENT DATA ADDRESS 


HI 

(D4) 

CHARACTER 

2 

SCCWDEFG 

DEFINE EXTENT FLAG 


mm 

(D6) 

UNSIGNED 

2 

SCCWDECT 

DEFINE EXTENT COUNT 


216 

(D8) 

CHARACTER 

8 

SCCWLOCR 

LOCATE RECORD CCW 


216 

(D8) 

CHARACTER 

1 

SCCWLR0P 

LOCATE RECORD OP CODE 


217 

(D9) 

ADDRESS 

3 

SCCWLRAD 

LOCATE RECORD DATA ADDRESS 


220 

(DC) 

CHARACTER 

2 

SCCWLRFG 

LOCATE RECORD FLAG 


222 

(DE) 

UNSIGNED 

2 

SCCWLRCT 

LOCATE RECORD COUNT 


224 

(E0) 

CHARACTER 

96 

SCCWRDWT 

12 READ OR WRITE CCWS 


224 

(E0) 

CHARACTER 

1 

SCCWRDW0 

READ/WRITE OP CODE 


225 

(El) 

ADDRESS 

3 

SCCWRDWA 

READ/WRITE DATA ADDRESS 


228 

(E4) 

CHARACTER 

2 

SCCWRDWF 

READ/WRITE FLAGS 


230 

(E6) 

UNSIGNED 

2 

SCCWRDWC 

READ/WRITE COUNT 


320 

(140) 

CHARACTER 

8 

SCCWNOP 

NOP/TIC CCW CHANGED TO TIC WHEN 
TO ANOTHER CCW, ELSE IS NOP 

CHAINING 


seen 

32 


MVS/370 Debug Hdbk Vol 5 


SCCW 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 












Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS 

_TYPE_LENGTH NAME_ 

DESCRIPTION 

320 

(140) CHARACTER 

1 

SCCWN 

NOP/TIC OP CODE 

321 

(141) ADDRESS 

3 

SCCWNAD 

NOP/TIC CCW ADDRESS 

324 

(144) CHARACTER 

2 

SCCWFG 

NOP/TIC FLAGS 

326 

(146) UNSIGNED 

2 

SCCWNCT 

NOP/TIC COUNT 

0 

(0) STRUCTURE 

520 

SCCW 


HEADER 

SECTION OF SWAP 

CHANNEL COMMAND 

WORKAREA 


0 

(0) CHARACTER 

208 

SCCWHDR 

SCCW IDENTIFIER »SCCW* 

0 

(0) CHARACTER 

4 

SCCWID 

SECTOR VALUE FOR SET SECTOR 

4 

(4) UNSIGNED 

1 

SCCWSECT 

SCCW FLAGS 

5 

(5) BITSTRING 

1 

SCCWFLAG 

I/O ERROR FLAG 1 = THIS SCCW SUFFERED AN 
I/O ERROR 0 = NO ERROR THIS SCCW 


1 . . « till 

.111 1111 


SCCWERR 

RESERVED 

6 

(6) CHARACTER 

6 


POINTER TO NEXT SCCW ON CHAIN 

12 

(C) ADDRESS 

4 

SCCWSCCW 

POINTER TO FIRST AIA OF THE GROUP USING 
THIS SCCW 

16 

(10) ADDRESS 

4 

SCCWAIA 


20 

(14) ADDRESS 

4 

SCCWIORB 


SPECIAL FIELDS NOT PRESENT IN A PCCN HEADER 


24 

(18) ADDRESS 

4 

SCCWLCCW 

SAVE AREA FOR SEARCH OP CODE AND ARGU¬ 
MENT ADDRESS WHEN SEARCH CCW CONVERTED 

TO TIC FOR CCW CHAINING 

28 

(1C) UNSIGNED 

4 

SCCWSVOA 



SCCW 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SCCW 

Data Area Descriptions 33 














Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


IDAW FIELDS FOR THE SCCWS 


32 (20) CHARACTER 96 SCCWIDAW 


32 (20) ADDRESS 4 SCCWIDW1 SECOND 2K ADDR 


36 (24) ADDRESS 4 SCCWIDW2 


SEARCH ARGUMENT SECTION OF SNAP CHANNEL COMMAND WORKAREA 


128 

(80) 

CHARACTER 

64 

SCCWSARG 

EXTENT NUMBER 

OF SEEK ADDRESS 

128 

(80) 

CHARACTER 

1 

SCCWM 

BIN NUMBER OF 

SEEK ADDRESS 

129 

(81) 

CHARACTER 

2 

SCCWBB 

TWELVE COPIES 

OF CCHHR 

131 

(83) 

CHARACTER 

60 

SCCWSRH 

CYLINDER AND 1 

HEAD 

131 

(83) 

CHARACTER 

4 

SCCWCCHH 

CYLINDER 


131 

(83) 

CHARACTER 

2 

SCCWCC 

HEAD 


133 

(85) 

CHARACTER 

2 

SCCWHH 

RECORD 


135 

(87) 

CHARACTER 

‘ 1 

SCCWR 

RESERVED 


191 

(BF) 

CHARACTER 

1 

SCCWRSV1 



SET PAGING 

PARAMETERS DATA AREA 




192 

(CO) CHARACTER 

10 

SCCWSPPD 


192 

(CO) CHARACTER 

1 • • • 

• 1 • • •••• 

1 

SCCWSPFL 

SCCWSPSQ 

SCCWSPRO 

SET PAGING PARAMETER BLOCK COUNT 

193 

(Cl) CHARACTER 

1 

SCCWSPBC 


194 

CC2) CHARACTER 

2 

SCCWSPCA 



SCCW 

34 


MVS/370 Debug Hdbk Vol 5 


SCCW 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 











Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


196 

(C4) 

CHARACTER 

2 

SCCWSPR1 

198 

(C6) 

CHARACTER 

4 

SCCWSPSK 

202 

(CA) 

CHARACTER 

6 

SCCNRSV2 


CCW SECTION 

OF SNAP CHANNEL 

COMMAND HORKAREA 


208 

(DO) 

CHARACTER 

312 

SCCWCCW 


208 

(DO) 

CHARACTER 

8 

SCCMSEEK 

SEEK OP CODE 

208 

(DO) 

CHARACTER 

1 

SCCHSKOP 

SEEK CCN ADDRESS 

209 

(Dl) 

ADDRESS 

3 

SCCWSKAD 

SEEK FLAGS AND COUNT 

212 

(D4) 

CHARACTER 

4 

SCCNFGCT 

SET SECTOR CCN 

216 

(D8) 

CHARACTER 

8 

SCCHSSEC 

SET SECTOR OP CODE 

El 

(D8) 

CHARACTER 

1 

SCCNSSOP 

SET SECTOR CCN ADDRESS 

H 

(D9) 

ADDRESS 

3 

SCCHSSAD 

SET SECTOR FLAGS AND COUNT 

220 

(DC) 

CHARACTER 

4 

SCCWFLCT 

12 SETS OF THREE CCN*S 

224 

(E0) 

CHARACTER 

288 

SCCWSLOT 


224 

(EO) 

CHARACTER 

8 

SCCNSRCH 

SEARCH OP FIELD 

224 

(E0) 

CHARACTER 

1 

SCCNSROP 

SEARCH ADDRESS FIELD 

225 

(El) 

ADDRESS 

3 

SCCHSRAD 

SEARCH FLAG FIELD 


228 

(E4) 

CHARACTER 

1 

SCCHSRFL 


229 

(E5) 

CHARACTER 

1 


SEARCH COUNT FIELD 

230 

(E6) 

UNSIGNED 

2 

SCCNSRCT 

TIC CCN 

232 

(E8) 

CHARACTER 

8 

SCCWTIC 

TIC OP FIELD 

232 

(E8) 

CHARACTER 

1 

SCCNTIOP 

TIC ADDRESS FIELD 

233 

(E9) 

ADDRESS 

3 

SCCWTIAD 



SCCU 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


sccw 

Data Area Descriptions 35 















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


Pf-ES ETS _IYEI__ DESCRIPTION 


236 

(EC) 

CHARACTER 



READ OR WRITE CCW 

240 

CFO) 

CHARACTER 

8 

SCCWRW 

READ/WRITE OP FIELD 

240 

(F0) 

CHARACTER 

1 

SCCWRWOP 

READ/WRITE ADDRESS FIELD 

241 

(FI) 

ADDRESS 

3 

SCCWRWAD 

READ/WRITE FLAG FIELD 

244 

(F4) 

CHARACTER 

1 

SCCMRMFL 


245 

(F5) 

CHARACTER 

1 


READ/WRITE COUNT FIELD 

246 

(F6) 

UNSIGNED 

2 

SCCWRWCT 

LAST CCW USED TO TIC WHEN CHAINING TO 
ANOTHER SET OF CCWS 

512 

(200) 

CHARACTER 

8 

SCCMLTIC 


512 

(200) 

CHARACTER 

1 

SCCWLTOP 

LAST TIC ADDRESS FIELD 

513 

(201) 

ADDRESS 

3 

SCCMLTAD 


516 

(204) 

CHARACTER 

4 



THIS 

FIELD IS DEFINED 

TO COMMONLY ADDRESS 

THE SCCWMBB FIELD 

AND THE FIRST SCCMSRH 

ITERATION. 


STRUCTURE OF CHANNEL PROGRAM 

FOR EXTENDED 

CKD ARCHITECTURES 

208 

(DO) 

STRUCTURE 

16 

SCCWSPP 


208 

(DO) 

CHARACTER 

8 

SCCWSETP 

SET PAGING PARAMETER OP CODE 

208 

(DO) 

CHARACTER 

1 

SCCWSPOP 


209 

(Dl) 

ADDRESS 

3 

SCCWSPAD 


212 

(D4) 

CHARACTER 

2 

SCCWSPFG 


214 

(D6) 

CHARACTER 

2 

SCCNSPCT 


216 

(D8) 

CHARACTER 

8 

SCCWSPTC 

TIC OP FIELD 

216 

(D8) 

CHARACTER 

1 

SCCWSPTO 

TIC ADDR FIELD 

217 

(D9) 

ADDRESS 

3 

SCCWSPTA 

TIC FLAG FIELD 

220 

(DC) 

CHARACTER 

2 

SCCWSTFG 

TIC COUNT FIELD 


SCCM 

36 


MVS/370 Debug Hdbk Vol 5 


SCCW 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 
















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


222 

(DE) 

CHARACTER 

2 

SCCWSTCT 

128 

(80) 

STRUCTURE 

40 

SCCWDAT 


128 

(80) 

CHARACTER 

1 

SCCWEM 

BB OF SEEK ADDRESS 

129 

(81) 

CHARACTER 

2 

SCCWEBB 

CCHHR ECKD SEARCH 

131 

(83) 

CHARACTER 

5 

SCCWESRH 

CCHH ECKD SEEK 

131 

(83) 

CHARACTER 

4 

SCCWESEK 

RECORD 

135 

(87) 

CHARACTER 

1 

SCCWER 

DEFINE EXTENT DATA 

136 

(88) 

CHARACTER 

16 

SCCWDEFD 

DEFINE EXTENT MASK BYTE 

136 

(88) 

CHARACTER 

1 

SCCWDMSK 


137 

(89) 

CHARACTER 

1 

SCCWDATR 


138 

(8A) 

UNSIGNED 

2 

SCCWDSZ 


140 

(80 

CHARACTER 

4 

SCCWDRSV 

BEGINNING CCHH OF DEFINE EXTENT 

144 

(90) 

CHARACTER 

4 

SCCWCCHB 


148 

(94) 

CHARACTER 

4 

SCCWCCHE 


152 

(98) 

CHARACTER 

16 

SCCWLOCD 

LOCATE RECORD OPERATION BYTE 

152 

(98) 

CHARACTER 

1 

SCCWLOPB 


153 

(99) 

CHARACTER 

1 

SCCMLAUX 


154 

(9A) 

UNSIGNED 

2 

SCCWLREC 

SEEK ADDRESS 

156 

(90 

CHARACTER 

4 

SCCWLSEK 

SEARCH ARGUMENT 

160 

(AO) 

CHARACTER 

5 

SCCWLSRC 

SECTOR NUMBER 

165 

(A5) 

CHARACTER 

1 

SCCNLSEC 

TRANSFER LENGTH FACTOR 

166 

(A6) 

UNSIGNED 

2 

SCCWLTRN 



SCCW 

LC28-1389-0 (c) Copyright IBM Corp 


1980, 1985 


SCCW 

Data Area Descriptions 37 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


CROSS REFERENCE 


NAME 

HEX 

OFFSET 

HEX 

VALUE 

NAME 

HEX 

OFFSET 

HEX 

VALUE 

NAME 

HEX 

OFFSET 

HEX 

VALUE 

SCCW 

0 


SCCNLAUX 

99 


SCCWSECT 

4 


SCCNAIA 

10 


SCCWLCCM 

18 


SCCHSEEK 

DO 


SCCWBB 

81 


SCCWLOCD 

98 


SCCHSETP 

DO 


SCCWCC 

83 


SCCHLOCR 

D8 


SCCWSKAD 

D1 


SCCWCCHB 

90 


SCCWL0PB 

98 


SCCWSKOP 

DO 


SCCWCCHE 

94 


SCCWLRAD 

D9 


SCCWSLOT 

EO 


SCCWCCHH 

83 


SCCNLRCT 

DE 


SCCNSPAD 

D1 


SCCWCCW 

DO 


SCCNLREC 

9A 


SCCWSPBC 

Cl 


SCCWDAT 

80 


SCCWLRFG 

DC 


SCCWSPCA 

C2 


SCCWDATR 

89 


SCCNLROP 

D8 


SCCWSPCT 

D6 


SCCWDEAD 

D1 


SCCWLSEC 

A5 


SCCHSPFG 

D4 


SCCWDECT 

D6 


SCCWLSEK 

9C 


SCCWSPFL 

CO 


SCCWDEFD 

88 


SCCNLSRC 

AO 


SCCNSPOP 

DO 


SCCWDEFE 

DO 


SCCNLTAD 

201 


SCCHSPP 

DO 


SCCWDEFG 

D4 


SCCWLTIC 

200 


SCCHSPPD 

CO 


SCCWDEOP 

DO 


SCCHLTOP 

200 


SCCWSPRO 

CO 

40 

SCCWDMSK 

88 


SCCWLTRN 

A6 


SCCWSPR1 

C4 


SCCWDRSV 

8C 


SCCHM 

80 


SCCHSPSK 

C6 


SCCWDSZ 

8A 


SCCNN 

140 


SCCNSPSQ 

CO 

80 

SCCWEBB 

81 


SCCHNAD 

141 


SCCHSPTA 

D9 


SCCWECCW 

DO 


SCCNNCT 

146 


SCCHSPTC 

D8 


SCCWEM 

80 


SCCNNOP 

140 


SCCNSPTO 

D8 


SCCWER 

87 


SCCNR 

87 


SCCHSRAD 

El 


SCCNERR 

5 

80 

SCCWRDWA 

El 


SCCWSRCH 

EO 


SCCWESEK 

83 


SCCNRDWC 

E6 


SCCWSRCT 

E6 


SCCWESRH 

83 


SCCWRDHF 

E4 


SCCWSRFL 

E4 


SCCWFG 

144 


SCCNRDHO 

EO 


SCCNSRH 

83 


SCCWFGCT 

D4 


SCCNRDWT 

EO 


SCCNSROP 

EO 


SCCNFLAG 

5 


SCCNRSV1 

BF 


SCCWSSAD 

D9 


SCCWFLCT 

DC 


SCCNRSV2 

CA 


SCCWSSEC 

D8 


SCCWHDR 

0 


SCCWRW 

FO 


SCCWSSOP 

D8 


SCCWHH 

85 


SCCHRHAD 

FI 


SCCWSTCT 

DE 


SCCWID 

0 


SCCWRWCT 

F6 


SCCWSTFG 

DC 


SCCWIDAN 

20 


SCCWRWFL 

F4 


SCCNSVOA 

1C 


SCCWIDW1 

20 


SCCHRNOP 

FO 


SCCWTIAD 

E9 


SCCNIDN2 

24 


SCCWSARG 

80 


SCCHTIC 

E8 


SCCNIORB 

14 


SCCWSCCW 

C 


SCCWTIOP 

E8 



SCCW 

38 


SCCW 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


MVS/370 Debug Hdbk Vol 5 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SCP 


Common Name : Hot I/O Status Collection Data Area 

Macro XD : IECDSCD 

DSECT Name : IECDSCD 

Created by s IEAVNIPO, IEEVCPU 

Subpool and Key : 245 and key 0 

Size : 16 entries of 32 bytes each 

Pointed to by j CSTSCDP field of CSTE 

Serialization : Disablement on the processor with the specified channel 
set. 

Function : Maintains information on unsolicited status and interrupts for 
the purpose of determining if hot I/O is occurring. There is one entry 
per channel. 

PJEESETS_mi_ LENGTH NAME _ DESCRIPTION 


0 

(0) STRUCTURE 

32 

SCD 

HOT I/O STATUS 

COLLECTION DATA 

0 

(0) SIGNED 

2 

SCDCSID 

CHANNEL SET OF 

HOT CHANNEL OR DEVICE 

2 

(2) SIGNED 

2 

SCDDEVAD 

CHANNEL/DEVICE 

ADDRESS 


4 

(4) 

BITSTRING 

1 

SCDFLG1 

FLAG BYTE 1 


1... 

.... 


SCDRECUR 

HOT I/O RECURSION INDICATOR 


.111 

1111 



RESERVED 

5 

(5) 

CHARACTER 

2 

SCDRSCDE 

HOT I/O DETECTION FLAGS 

5 

(5) 

BITSTRING 

1 

SCDRSC1 

DETECTION FLAG BYTE 1 


1. .. 

• • • • 


SCDTMOUT 

TIME OUT HOT I/O 


.1.. 

• • • • 


SCDAVAIL 

AVAILABILITY INTERRUPT 


..1. 

« • • . 


SCDUNSOL 

UNSOLICITED STATUS 


.. .1 

• • • • 


SCDNOSYS 

DEVICE NOT SYSGENED 


« • • • 

1.. . 


SCDRSVDO 

RESERVED 


• • • 1 

.1.. 


SCDINVDV 

CHANNEL ERROR AND INVALID DEVICE ADDR 


• * • « 

. .1. 


SCDCUERR 

CHANNEL ERROR-CONTROL UNIT PROBABLE 
CAUSE 


• • t I 

.. .1 


SCDCHERR 

CHANNEL ERROR-CONTROL UNIT NOT PROBABLE 
CAUSE 


SCO 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SCO 

Data Area Descriptions 39 









Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


6 

(6) 

BITSTRING 

1 

SCDRSC2 

DETECTION FLAG BYTE 2 


11. 

• • • i • 


SCDTYPE 

SOURCE OF INTERRUPT- 00 IMPLIES SCD 

ENTRY NOT YET INITIALIZED. SEE DECLARA¬ 
TIONS OF SCDTYPCH, SCDTYPCU, AND 

SCDTYPDV FOR VALUES FOR THIS FIELD. 


..11 11.. 



RESERVED 


• • • 

• • » 1 » 


SCDCHREC 

CHANNEL RECURSION 


* • • 

• • • • X 


SCDH0TR 

HOT I/O RECURSION BIT. NOT USED IN SCD 
BUT MAPPED IN IRT. 

7 

(7) 

BITSTRING 

1 


RESERVED 

8 

(8) 

BITSTRING 

2 

SCDCSWST 

CSW STATUS 

10 

(A) 

SIGNED 

2 


RESERVED 

12 

CC) 

CHARACTER 

4 

SCDCNTS 

HOT I/O COUNTERS 

12 

CC) 

SIGNED 

2 

SCDRCNT 

STATUS REPEAT COUNT 

14 

(E) 

SIGNED 

2 

SCDTRCNT 

TIMEOUT REPEAT COUNT 

16 

(10) 

CHARACTER 

8 

SCDTIME 

TIME OF STATUS 

16 

(10) 

UNSIGNED 

4 

SCDTIME1 

VALUE FOR CALCULATING SECONDS ELAPSED 

20 

(14) 

UNSIGNED 

4 

SCDTIME2 

2ND WORD OF TIME VALUE 

24 

(18) 

CHARACTER 

8 

SCDRSVD1 

PAD LENGTH TO POWER OF 2 

0 

(0) 

STRUCTURE 

512 

SCDTAB 

16 ENTRIES PER SCD 

0 

(0) 

CHARACTER 

512 

SCDENTRY 



SCD 

40 


MVS/370 Debug Hdbk Vol 5 


LC28-1389-0 (c) Copyright IBM Corp 


1980 


SCD 

1985 









Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SCL 


Common Name i Scan Parameter List 
Macro ID : IEEZB815 
DSECT Name : None 

Created by : Caller of generalized parser (IEEMB887) 

Subpool and Key : Caller's 
Size : 92 bytes 

Pointed to by : N/A 
Serialization : None 

Function : The parameter list to IEEMB887 provides the basic information to 
perform a parse of the specified input. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) 

STRUCTURE 

92 

SCLPARM 

PARSE PARM LIST 

0 

(0) 

CHARACTER 

4 

SCLACR0 

ACRONYM SHOULD EQUAL 'SCL • 

4 

(4) 

UNSIGNED 

1 

SCLVERSN 

VERSION LEVEL 

5 

(5) 

CHARACTER 

3 

SCLRESV1 

RESERVED 

8 

(8) 

ADDRESS 

4 

SCLCHAR 

PTR TO STRING TO PARSE 

12 

(C) 

ADDRESS 

4 

SCLDSC 

PTR TO FIRST PARSE DESC. 

16 

(10) 

ADDRESS 

4 

SCLI0RTN 

ADDR OF USER I/O EXIT ROUTINE 

20 

(14) 

ADDRESS 

4 

SCLI0PAD 

ADDR OF PARM FOR I/O ROUTINE 

24 

(18) 

ADDRESS 

4 

SCLCURNT 

ADDR OF CURRENT PARSE DESC. 

28 

(1C) 

UNSIGNED 

2 

SCLINLN 

INPUT RECORD LENGTH 

30 

(IE) 

UNSIGNED 

2 

SCLSTRLN 

PASSBACK LENGTH 

32 

(20) 

BITSTRING 

1 

SCLFLG1 

FLAG BYTE 


1... 

• • • « 


SCLCONTC 

CONTINUATION CHAR. CHECK 


.1.. 

• • • • 


SCLNOCT 

NO CONTINUATION ALLOWED 


..1. 

• » • • 


SCLC0MNT 

COMMENTS ALLOWED 


. . .1 

• « • • 


SCLNOSUC 

AFTER CALL TO ROUT PROCESS ALTERNATE 


SCL 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 


1985 


SCL 

Data Area Descriptions 41 












Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS 

_TYPE_LENGTH 

NAME 

DESCRIPTION 






PARSE DESC. NEXT 


• • • 

• 1 • • • 


SCLSECS 

AFTER CALL TO ROUT PROC. SEC. SUCCESSOR 
PARSE DESC. NEXT 


• • • 

• • 1 • • 


SCLNORT 

DO NOT CALL ROUT EXIT ROUTINE UNLESS 
*CALLRT=YES' IS GIVEN 


• • • 

. .. 1 . 


SCLMULTR 

ALLOH MULTIPLE RECORD SCANS 


• • • 

. ...1 



RESERVED 

33 

(21) 

UNSIGNED 

1 

SCLFLG2 

RESERVED 

34 

(22) 

UNSIGNED 

1 

SCLFLG3 

RESERVED 

35 

(23) 

UNSIGNED 

1 

SCLUFUNC 

FUNCTION BYTE HAS CONTENTS OF ADDRESS 
THAT TRT INSTR. STOPPED AT DURING TRT 
SCAN 

36 

(24) 

ADDRESS 

4 

SCLUTAB 

ADDR OF USER PROCESSING TABLE 

40 

(28) 

SIGNED 

2 

SCLUINDX 

INDEX WITHIN PROCESSING TABLE 

42 

(2A) 

SIGNED 

2 

SCLRESV2 

RESERVED 

44 

(20 

ADDRESS 

4 

SCLUSER 

USER-DEFINED WORK AREA 

48 

(30) 

SIGNED 

4 

SCLDATA 

USER'S DATA FOR THE ROUT 

52 

(34) 

ADDRESS 

4 

SCLMBUFP 

ADDR. OF MULTIPLE RECORD BUFFER 

56 

(38) 

UNSIGNED 

2 

SCLMBUFL 

LENGTH OF MULTIPLE RECORD BUFFER 

58 

(3A) 

SIGNED 

2 

SCLFLG5 

RESERVED 

60 

(30 

ADDRESS 

4 

SCLMBUFU 

ADDR. OF FIRST UNUSED BYTE OF MULT. REC. 
BUFFER 

64 

(40) 

SIGNED 

4 

SCLRET 

RETURN CODE 

68 

(44) 

SIGNED 

4 

SCLRSN 

REASON CODE 

72 

(48) 

CHARACTER 

4 

SCLRSVD1 

RESERVED 

76 

(40 

CHARACTER 

4 

SCLRSVD2 

RESERVED 

80 

(50) 

CHARACTER 

4 

SCLRSVD3 

RESERVED 


SCL 

42 


MVS/370 Debug Hdbk Vol 5 


SCL 

LC28-1389-0 Cc) Copyright IBM Corp. 1980, 1985 















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 

84 (54) CHARACTER 4 SCLRSVD4 RESERVED 

88 (58) CHARACTER 4 SCLRSVD5 RESERVED 


SCL 

LC28-1389-0 (c) Copyright IBM Corp 


1980, 1985 


SCL 

Data Area Descriptions 43 




Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SCI 


Common Name : Step Control Table 
Macro ID : IEFASCTB 
DSECT Name : INSMSCT 
Created by : IEFVEA 

Subpool and Key : 236 or 237 and key 1 

Size : 176 bytes 

Pointed to by : JCTDKAD field of the JCT data area 
JSCSCT field of the JSCB data area 
LCTSCTAD field of the LCT data area 
SCTANSCT field of the SCT data area 
Serialization : None 

Function : Contains job step information that is used by initiator and 
interpreter routines. 

OFFS ET S_HE!_ LENGTH NAME _ DESCRIPTION 


0 

(0) FLOATING 

8 

INSMSCT 

"X" STEP CONTROL TABLE 

0 

(0) CHARACTER 

3 

SCTDISKA 

DISK ADDRESS OF SCT 

3 

(3) CHARACTER 

1 

SCTTBLID 

TABLE ID OF SCT=2 


• ••• • < 1 « 


SCTID 

n£n 

4 

(4) CHARACTER 

1 

SCTSSTAT 

INTERNAL STEP STATUS 


1 i • • • • • • 


EAADDRBT 

"128"BIT 0 ON FOR ADDRSPC s REAL 

EACAUSER EQU 64 CAN CAUSE 

ROLLOUT 

AACA 


• •1* •••* 


SCTNORST 

"32"BIT 2 NO RESTART TO BE DONE AACA 


• ••1 • • • • 


SCTNOCKP 

"16"BIT 3 NO CHECKPOINT TO BE TAKEN AACA 


» * • • 1 • • • 


SCTDORST 

"8"BIT 4 DO RESTART IF NECESSARY AACA 


SCT 

44 


MVS/370 Debug Hdbk Vol 5 


SCT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


SCTKEYO EQU 4 BIT 5 - 
SCT6RPH EQU 2 BIT 6 - 

FOR 

FOR 

GRAPHICS - 
GRAPHICS - 

ALTER PROTECT KEY AACA 

ABEND EXIT AACA 


• ••• « • • 1 


INCMSSTS 

"1" BIT-7/STEP FAILED 

5 

(5) CHARACTER 

3 

SCTSTIME 

MAXIMUM STEP RUNNING TIME 

8 

(8) CHARACTER 

2 

SCTSEXEC 

STEP STATUS CODE PASSED TO THE INITIATOR 
AT TERMINATE OR THE LENGTH OF THE PARM 
FIELD IN THE SCTX. 

10 

(A) CHARACTER 

2 

SCTLALOC 

LENGTH OF ALLOCATION WORK AREA ALSO 

NUMBR OF GOOD DD CARDS 

12 

(C) CHARACTER 

4 

SCTFSIOT 

DISK ADDRESS OF FIRST SIOT 

16 

(10) CHARACTER 

4 

SCTAALOC 

DISK ADDRESS OF ALLOCATION WORK AREA 

20 

(14) CHARACTER 

4 

SCTANSCT 

DISK ADDRESS OF NEXT SCT 

24 

(18) CHARACTER 

4 

SCTLSIOT 

LAST SIOT FOR STEP 

28 

(1C) CHARACTER 

4 

SCTDDNT 

SNA ADDRESS OF DDNT 

32 

(20) CHARACTER 

4 

SCTAFACT 

DISK ADDRESS OF FIRST ACT FOR THIS STEP 

36 

(24) CHARACTER 

4 

SCTSWB 

SCHEDULER WORK BLOCK(SWB) STRUCTURE 
POINTER 

40 

(28) CHARACTER 

4 

SCTADSTB 

DISK ADDRESS OF DSNAME TABLE FOR THIS 
STEP 

44 

(20 CHARACTER 

8 

SCTSCLPC 

NAME OF STEP THAT CALLED PROCEDURE 

52 

(34) CHARACTER 

8 

SCTSNAME 

STEPNAME 

60 

(30 CHARACTER 

2 

SCTRPACT 

RELATIVE POINTER TO STEP ENTRY IN ACT 

62 

(3E) CHARACTER 

2 


RESERVED 

64 

(40) CHARACTER 

1 

SCTSNUMB 

STEP NUMBER 


SCT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SCT 

Data Area Descriptions 45 















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


65 

(41) 

CHARACTER 

1 

SCTNSMSG 

NUMBER OF SET UP MESSAGES 

66 

(42) 

CHARACTER 

1 


RESERVED 

67 

(43) 
1 .. 

CHARACTER 

1 

SCTSTYPE 

SCTGOSTP 

STEP TYPE 

"128" BIT 0- =1 IF PGM=x.(GO)STEP(FETCH 
DCB) 19874 


EQU 

64 

BIT 1- =1 IF SYSIN IS SPECIFIED (DD X) 

19874 

EQU 

32 

BIT 2- =1 IF THE PARAMETER ASSOCIATED WITH A 

19874 

SYSOUT 

KEYWORD SPECIFIES THE MESSAGE CLASS 19874 



. ..1_ SCTSJFHK "16" BIT 3 JFCB H/K COMPLETE 


BITS 4, 5, AND 6 ARE USED BY THE INITIATOR, AS FOLLOHS 
000 - USE ACTION CODE 
001 - 60 TO AVR MODULE 
010 - GO TO SPACE REQUEST 
Oil - GO TO EXTERNAL ACTION SETUP 

100 - GO TO EXTERNAL ACTION VERIFY 

101 - NULL 

110 - NULL 

111-NULL 



.1 


SCTJSCAT 

"1" BIT 7- =1 PRVT CAT IS 
STEPCAT 

_1 

JOBCAT, =0 FOR 

68 

(44) SIGNED 

4 

SCTXBTTR 

TTR OF SCT EXTENSION BLOCK 
PARM AACA 

: CONTAINING 

72 

(48) SIGNED 

4 

SCTMSADR 

ADDRESS OF REGION IN MAIN 
IN 1ST BYAACA 

STORAGE X'OO 


76 (40 CHARACTER 4 SCTSRBT ACCUMULATED SRB TIME FOR STEP 


SCT 

46 


MVS/370 Debug Hdbk Vol 5 


SCT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 









Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


THE FOLLOWING FOUR BYTES ARE 

1254 

USED BY IEFSD41Q(MVT AND MFT-2), 

1254 

IEFSD42QCMVT AND MFT-2)* 

1254 

IEFW41SDCPCP), 

1254 

IEFW42SDCPCP), 

1254 

IEFYNIMP(ALL SYSTEMS) 

1254 


80 

(50) CHARACTER 

4 

SCTLDSTB 

LENGTH OF DSN TABLE 

84 

(54) CHARACTER 

4 

SCTPCAT 

PRIV.CATALOG SIOT DISK ADDR 

88 

(58) SIGNED 

2 

SCTMSSZE 

SIZE OF REGION IN MAIN STORAGE AACA 

90 

(5A) SIGNED 

2 


RESERVED 

92 

(50 CHARACTER 

2 

SCTNIUSL 

COUNT OF TOTAL NO. OF DD'S FOR A STEP 

94 

(5E) CHARACTER 

2 

SCTSDP 

STEP DISPATCHING PRIORITY- SET IN IEF- 
VEA* 1241 USED BY THE INITIATOR 1241 


1 • • • •••• 


SCTEPRFM 

"128" BIT 0 = 1 PERFORM SPECIFIED ON 

EXEC STMT 


• 1*« • • * • 


SCTPRFM2 

"64" BIT 1 = 1 IF TWO BYTE PERFORM FIELD 
USED 


• • 1> • • • • • 


SCTFSTEP 

"32" BIT 2-FIST STEP TO BE EXECUTED 1241 

96 

(60) SIGNED 

4 

SCTSMF 

STEP SYSIN COUNT FOR SMF SMF 

100 

(64) CHARACTER 

4 

SCTGOTTR 

TTR OF PGM=X. SIOT AACA 

104 

(68) CHARACTER 

4 

SCTTIOT 

THIS FIELD+1 IS A 3-BYTE TTRAACA OF THE 
STEP TIOT AACA 


.11. 1... 


SCTSTAT2 

"SCTTIOT" EXTENSION OF STEP STATUS INDI¬ 
CATORS AACA 


.11. 1... 


SCTBCT 

"SCTTIOT" STEP STATUS INDICATORS 19874 
BIT 0 RESERVED 19874 


SCT 

LC28-1389-0 (c) Copyright IBM Corp. 1980* 


1985 


SCT 

Data Area Descriptions 47 







Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS 




THE FOLLOWING BIT INDICATES THAT DIRECT SYSOUT FACILITIES ARE 
REQUIRED FOR JOB SEPARATOR/SYSTEM MESSAGES 099 


• • 1 • 4 4 4 

4 4 4 4 1*4 

4 4 4 4 • 1 4 


4 4 4 4 . . 1 . 


SCTMCVOL 

SCTSTPLB 

SCTSPSYS 


SCTJBEND 


"32" ALLOCATION FOR CVOL AACA BIT 3 
RESERVED 19874 

"8" BIT 4 STEPLIB PRESENT AACA 
"4" BIT 5 =1 IF SPOOLED SYSIN FOR STEP 
(EXPRESS 0102 CANCEDSET BYIEFVDA,TESTED 
BY IEESD575 0102 MVT AND MFT ONLY) 0102 
"2" JOB ENDED BIT AACA 



ONLY WERE SPECIFIED, INFORMATION HERE. OTHERWISE, 8TH COND 
CODE OR ZERO 



4 4 4 1 4 4 4 4 

4 4 4 4 1 4 I | 

4 4 4 4 4 1 4 4 

4444 4 . 1 4 

4444 4 4 4 1 

(Al) CHARACTER 
(A6) CHARACTER 


SCTABCAN 

SCTONLYC 

SCTABEND 

SCTEVEN 

SCTONLY 

5 

2 SCTCATCT 


"16" STEP CANCEL-PRIOR ABEND NO 
EVEN/ONLY HW16 

"8" STEP CANCEL-ONLY WITH NO PRIOR 
ABEND(S) HW16 

"4" THIS STEP ABENDED HW16 
"2" COND=EVEN WAS SPECIFIED HW16 
"1" COND=ONLY WAS SPECIFIED HW16 
TO COMPLETE CONDITION CODE SPACE HW16 
COUNT OF PRIV. CATALOG SIOTS 


SCT 

48 


MVS/370 Debug Hdbk Vol 5 


SCT 

LC28-1389-0 <c) Copyright IBM Corp. 1980, 1985 











Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS _lYPf_ LENGTH NAME _ DESCRIPTION 


AACA 

AACA 

IN ORDER TO IMPLEMENT MVT IT HAS BEEN NECESSARY TO ADD AACA 
THE FOLLOWING FIELDS TO THE SCT. TO AVOID CAUSING AACA 

ERRORS IN THE CASE OF THE REASSEMBLING OF ALREADY AACA 

EXISTING MODULES WHICH REFERENCE THESE FIELDS,THEY AACA 

ARE GENERATED HERE ONLY AS COMMENTS. NOTE THAT IN AACA 

ACTUALITY THESE FIELDS OCCUPY THE 1ST 5 BYTES OF 
THE AREA THAT IMMEDIATELY FOLLOWS THESE COMMENTS. 

UNTIL THESE FIELDS ARE ACTUALLY INCORPORATED INTO THIS AACA 
MACRO,THEY MUST BE REFERENCED BY DISPLACEMENT (GIVEN AACA 

BELOW), PREFERABLY THROUGH THE USE OF EQUATES WITH AACA 

THE SYMBOLS DESIGNATED BELOW. AACA 

AACA 


168 

(A8) 

CHARACTER 

4 


RESERVED 


SCTSTEND DS 
BIT 1=STEP 

CL1 

ENDED 


BIT 0= 
AACA 

STEP STARTED 



.. 1 . 

.... 


SCTSYSCK 

"32" BIT 2=RESTART REQUEST SYSTEM INITI¬ 
ATED, C/P DATA SET ALREADY BEEN VALI¬ 
DATED. DISPLACEMENT 172 (DECIMAL) AACA 

172 

(AC) 

1.1. 

CHARACTER 

1111 

3 

SCTLNGTH 

RESERVED 

"X-INSMSCT" LENGTH 

OF SCT AACA 


176 (BO) SIGNED 


4 INDMDSNT(45) 


SCT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SCT 

Data Area Descriptions 49 







Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SCVT 


Common Name : Secondary Communication Vector Table 
Macro ID : IHASCVT 
DSECT Name : SCVTSECT 
Created by : SYS6EN 

Subpool and Key : NUCLEUS resident and key 0 
Size : 184 bytes 

Pointed to by : CVTABEND field of the CVT data area 
Serialization : None 

Function : Used by non-resident routines to refer to routines used by the Supervi¬ 
sor, 

by ABEND/ and other program components. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) STRUCTURE 

0 

SCVTSECT 


0 

(0) V-ADDRESS 

4 

SCVTP6TM 

"V(IEAQPGTM)"- ADDR OF EOT TIMER PURGE 
ROUTINE 

4 

(4) ADDRESS 

4 

SCVTPGWR 

ADDRESS OF HTO/WTOR RESOURCE MANAGER. 
INITIALLY CONTAINS ADDRESS OF BR 14. 
CHANGED TO IEECVPRG (MODULE IEAVMED2) BY 
COMMUNICATIONS TASK INITIALIZATION (IEA- 
VVINT). 

8 

(8) V-ADDRESS 

4 

SCVTSPET 

"V(IEAQSPET)"- ADDR OF EOT SUBPOOL 
RELEASE 

12 

(C) BAL STMT 

2 

SCVTBR14 

RETURN TO CALLER 

14 

(E) HEX 

2 


RESERVED 

16 

(10) ADDRESS 

4 


SCVTERAS FIELD UNUSED IN 0S/VS2 RELEASE 

2 

20 

(14) ADDRESS 

4 


SCVTQCBO FIELD UNUSED IN 0S/VS2 RELEASE 

2 


SCVT 

50 


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LC28-1389-0 <c) Copyright IBM Corp. 1980, 1985 











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OFFSETS_ TYPE LENGTH NAME _ DESCRIPTION 


24 

(18) ADDRESS 

4 


SCVTPGEQ FIELD UNUSED IN 0S/VS2 RELEASE 

2 

28 

(1C) V-ADDRESS 

4 

SCVTRMBR 

n V(RMBRANCH)"- ADDR OF REGMAIN BRANCH 
ENTRY 

32 

(20) ADDRESS 

4 


SCVTPGIO FIELD UNUSED IN 0S/VS2 RELEASE 

2 

36 

(24) ADDRESS 

4 

SCVTRACE 

ADDR OF POINTER TO TRACE ROUTINE 

40 

(28) ADDRESS 

4 


SCVTTASW FIELD UNUSED IN 0S/VS2 RELEASE 

2 

44 

(20 V-ADDRESS 

4 

SCVTCDCL 

"V(IEAQCS02) n - ADDR OF CDCONTROL IN LINK 

48 

(30) V-ADDRESS 

4 

SCVTLFRM 

"V(FMBRANCH)"- LIST FORMAT FREEMAIN 
BRANCH ENT PT 

52 

(34) ADDRESS 

4 


SCVTPABL FIELD UNUSED IN 0S/VS2 RELEASE 

2 

56 

(38) ADDRESS 

4 


SCVTDQTC FIELD UNUSED IN 0S/VS2 RELEASE 

2 

60 

(30 V-ADDRESS 

4 

SCVTHSKP 

"V(CDHKEEP)"- ADDR OF CDHKEEP IN EOT 

64 

(40) ADDRESS * 

4 

SCVTRPTR 

ADDR OF TRACE TABLE POINTERS 

68 

(44) V-ADDRESS 

4 

SCVTGMBR 

"V(GMBRANCH)"- LIST FORMAT GETMAIN 

BRANCH ENTRY POINT 

72 

(48) ADDRESS 

4 


SCVTAUCT FIELD UNUSED IN VS2 

76 

(40 ADDRESS 

4 


SCVTROCT FIELD UNUSED IN VS2 

80 

(50) ADDRESS 

4 


SCVTROQ FIELD UNUSED IN VS2 

84 

(54) ADDRESS 

4 


SCVTRIRB FIELD UNUSED IN VS2 


SCVT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SCVT 

Data Area Descriptions 51 





















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


88 

(58) ADDRESS 

4 


SCVTRTCB FIELD UNUSED IN VS2 

92 

(50 ADDRESS 

4 

SCVTCOMM 

ADDR OF COMM TASK ROUTINE 

96 

(60) ADDRESS 

4 


SCVTABLK FIELD UNUSED IN VS2 

100 

(64) ADDRESS 

4 


SCVTNFND FIELD UNUSED IN VS2 

104 

(68) ADDRESS 

4 


SCVTRMTC FIELD UNUSED IN 0S/VS2 RELEASE 

2 

108 

(60 ADDRESS 

4 


SCVTMSSQ FIELD UNUSED IN 0S/VS2 RELEASE 

2 

112 

(70) ADDRESS 

4 

SCVTCTR1 

_ SCVTCTCB FIELD UNUSED IN 0S/VS2. 

116 

(74) ADDRESS 

4 


SCVTETCB FIELD UNUSED IN 0S/VS2 RELEASE 

2 

120 

(78) ADDRESS 

4 

SCVTRXLQ 

ADDR OF RECOVERY EXTENT LIST 

124 

(70 ADDRESS 

4 


SCVTRQND FIELD UNUSED IN 0S/VS2 RELEASE 

2 

128 

(80) ADDRESS 

4 


SCVTTAR FIELD UNUSED IN VS2 

132 

(84) V-ADDRESS 

4 

SCVTSVCT 

"V(SVCTABLE)"- ORIGIN OF SVC TABLE 

136 

(88) ADDRESS 

4 


SCVTSTXP FIELD UNUSED IN 0S/VS2 RELEASE 

3 

140 

(80 V-ADDRESS 

4 

SCVTTQE 

"V(IEATSELM)"- ADDR OF TSO SUBSYSTEMS 
TQE 

144 

(90) ADDRESS 

4 

SCVTTTRM 

TSO TASK TERMINATION RESOUCE MANAGER 

148 

(94) V-ADDRESS 

4 

SCVTSTAT 

**V(IGC07902)"- ADDR OF SVC STATUS ROU¬ 
TINE 


SCVT 

52 


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SCVT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 





















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OEESgIS_ TYPE _ LENGTH NAME _ BESfiRIEUflM 


152 (98) V-ADDRESS 4 SCVTQCBR "V(QCBRANCH)"- BRANCH ENTRY POINT TO 

GETMAIN/ FREEMAIN QUICKCELL ROUTINE 


156 

(90 ADDRESS 

4 


SCVTABBR FIELD UNUSED IN 0S/VS2 RELEASE 

2 

160 

(AO) ADDRESS 

4 


SCVTAPIO FIELD UNUSED IN 0S/VS2 RELEASE 

2 

164 

(A4) V-ADDRESS 

4 

SCVTPTRM 

"V(IEAVTERM)"- ADDRESS OF REAL STORAGE 
MANAGER (RSM) TERMINATION RESOURCE MAN¬ 
AGER ROUTINE THAT QUIESCES PAGING I/O 

AND PGFIX REQUESTS 

168 

(A8) ADDRESS 

4 


SCVTHOOK FIELD UNUSED IN 0S/VS2 RELEASE 

2 

172 

(AC) V-ADDRESS 

4 

SCVTPIQE 

"V(IEADQIQE)"- ADDR OF RESIDENT SUBROU¬ 
TINE IN EOT TO REMOVE IQE'S FROM ASYN¬ 
CHRONOUS EXIT QUEUE 

176 

(BO) ADDRESS 

4 


SCVTTMBR FIELD UNUSED IN 0S/VS2 RELEASE 

2 

180 

(B4) ADDRESS 

4 


SCVTFOMG FIELD UNUSED IN 0S/VS2 RELEASE 

2 


8CVT 

LC28-1389-0 (c) Copyright IBM Corp 


1980, 1985 


SCVT 

Data Area Descriptions 53 











Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SDCT 


Common Name : Swap Device Characteristics Table 

Macro XD : ILRSDCT 

DSECT Name : SDCT 

Created by : ILRASRIM 

Subpool and Key : 245 and key 0 

Size s 40 bytes plus 20 bytes for each entry plus 1 byte for each 
slot on a track for each entry. 

Pointed to by t SARSDCT field of the SART data area. 

The SRESDCTE field of the SARTE data area points 
to an SDCT entry (SDCTE). 

Serialization : None 

Function : The SDCT provides a single location for device-dependent 
information for ASM swapping logic. 

OFFSETS _HE!_ LENGTH NAME _ DESCRIPTION 


0 

(0) STRUCTURE 

40 

SDCT 

BASE STRUCTURE IS SDCT 

0 

(0) CHARACTER 

8 

SDCHDR 

HEADER FOR SDCT 

0 

(0) CHARACTER 

4 

SDCID 

SDCT IDENTIFIER SET TO C'SDCT' 

4 

(4) UNSIGNED 

2 

SDCSIZE 

NUMBER OF SDCTE'S 

6 

(6) UNSIGNED 

2 

SDCRSV1 

RESERVED 

SNAP 

DEVICE CHARACTERISTICS 

TABLE ENTRIES 



8 

(8) SIGNED 

32 

SDCENTL 

LENGTHS OF SDCT ENTRIES 

40 

(28) CHARACTER 

0 

SDCENTS 

SDC ENTRIES. EACH ENTRY IS MAPPED BY 
SDCTE BELOW 

0 

(0) STRUCTURE 

20 

SDCTE 

SWAP DEVICE TABLE ENTRY 


SDCT 

54 


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SDCT 

LC28-1389-0 (c> Copyright IBM Corp. 1980, 1985 













Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS _IYPE_ LENGTH NAME _ DESCRIPTION 


0 

6 

(0) 

(6) 

CHARACTER 

CHARACTER 

6 

2 

SDCDEVTP 

SDCDTYPX 

EBCDIC DEVICE TYPE INDICATOR 

DEVICE TYPE IN BINARY 

8 

(8) 

UNSIGNED 

2 

SDCSLTRK 

NUMBER OF SLOTS PER TRACK 

10 

(A) 

UNSIGNED 

2 

SDCCYLSZ 

NUMBER OF SLOTS PER CYLINDER 

12 

(C) 

UNSIGNED 

4 

SDCCMASK 

MASK FOR SAT CYLINDER MAP INIT 

16 

(10) 

UNSIGNED 

1 

SDCMPEXP 

THE POHER OF 2 REPRESENTING THE NUMBER 

OF BYTES REQUIRED TO MAP A SINGLE CYLIN¬ 
DER FOR THIS DEVICE TYPE (ZERO ORIGINED) 

17 

(11) 

CHARACTER 

3 

SDCRESV 

RESERVED 

20 

(14) 

UNSIGNED 

0 

SDCSSECT 

SWAP SECTOR VALUES FOR THIS DEVICE TYPE 


(ONE ELEMENT FOR EACH SLOT ON A TRACK) 


SDCT 

LC28-1389-0 (c) Copyright IBM Corp 1980, 1985 


SDCT 

Data Area Descriptions 55 





Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SDUMP 


Common Name t SVC Dump Parameter List 

Macro ZD : IHASDUMP 

DSECT Name : SDUMP 

Created by : SDUMP macro expansion 

Subpool and Key t Subpool and key of the issuer of the SDUMP macro 
Size s 48 bytes 

Pointed to by : Register 1, when SVC dump is invoked through the SDUMP 
executable macro. 

Serialization : None 

Function : Parameter list to indicate to SVC dump that an SVC dump 
is requested and what storage areas are to be included in the dump. 

flEESEIS_HEI_ LENGTH NAME _ DESCRIPTION 


0 (0) STRUCTURE 0 SDUMP 


1. BITO 

.1.. BIT1 

..1. .... BIT2 

...1 .... BITS 

.... 1... BIT4 

.1.. BIT5 

.... ..1. BIT6 

.1 BIT7 


, SDUMPPTR SDUMP PARAMETER LIST 
"128" 

"64" 

"32" 

"16" 

" 8 " 

ti<jn 

i»2" 

njtt 


0 (0) HEX 

1 ... .... 

. 1 .. .... 

.. 1 . .... 

...1 .... 

.... 1 ... 

.... . 1 .. 


SDUFLAGO FIRST BYTE OF FLAGS 

SDUDCB "BITO" 1=USER SUPPLIED DCB 0=USE OF 

SYS1.DUMP DATA SET 

SDUBUF "BIT1" 1=DUMP 4K SQA BUFFER 0=BYPASS 4K 

SQA BUFFER 

SDUSTOR "BIT2" 1=ST0RAGE LIST SPECIFIED 0=NO 

STORAGE LIST 

SDUHDR "BIT3" 1=USER DATA SPECIFIED 0=NO USER 

DATA 

SDUECB "BIT4" 1=ECB SPECIFIED 0=ECB NOT SPECI¬ 

FIED 

SDUASID "BITS" 1=SCHEDULE DUMP REQUEST ASID SPE- 


SDUMP SDUMP 

56 MVS/370 Debug Hdbk Vol 5 LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 









Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


ClFIED 0=ASID NOT SPECIFIED 



• •»• * • X • 


SDUQUIET 

"BIT6" 1=SET SYSTEM NON-DISPATCHABLE 
WHILE DUMPING SQA/CSA 0=MAINTAIN CURRENT 
SYSTEM STATUS 


• ••• • • • X 


SDUBRANH 

"BIT7" 1=BRANCH ENTRY 0=SVC 51 ENTRY 

1 

(1) HEX 

1 

SDUFLAG1 

SECOND BYTE OF FLAGS 


X • • • •••• 


DUMPTYPE 

"BITO" 1=SVC DUMP REQUEST 


.1. 


SDUABEND 

"BITl" 1=SYSMDUMP REQUEST 


. .1. 


SDUNEW 

"BIT2" 1=ENHANCED SVC DUMP REQUEST 


...1 _ 


SDUASLST 

"BIT3" 1=ASIDLST SPECIFIED 


_ 1... 


SDUSULST 

"BIT4" 1=SUMLIST SPECIFIED 


.1.. 


SDUIGNCD 

"BIT5" l=IGNORE CHNGDUMP OPTIONS 


• ••• • • 1 • 


SDUTSOXT 

"BIT6" l=TSO USER EXTENSION PRESENT 


• ••• i *«X 


SDUSE3P 

"BIT7" 1=0S/VS2 JBB1226 

2 

(2) HEX 

2 

SDUSDATA 

SDATA OPTION FLAGS 

2 

(2) HEX 

1 

SDUSDAT1 

FIRST BYTE OF SDATA FLAGS 


1. 


SDUALPSA 

"BITO" DUMP ALL PSA'S IN SYSTEM 


.1. 


SDUPSA 

"BITl" DUMP THE CURRENT PSA 


. .1. 


SDUNUC 

"BIT2" DUMP THE NUCLEUS 


...1 _ 


SDUSQA 

"BIT3" DUMP SQA 


_ 1... 


SDULSQA 

"BIT4" DUMP LSQA 


.1.. 


SDURGN 

"BIT5" DUMP REGION (PRIVATE AREA) 


.1. 


SDULPA 

"BIT6" DUMP ACTIVE LPA MOD. FOR RGN 


.1 


SDUTRT 

"BIT7" DUMP TRACE TABLE GTF BUFFERS 

3 

(3) HEX 

1 

SDUSDAT2 

SECOND BYTE OF SDATA FLAGS 


1. 


SDUCSA 

"BITO" DUMP CSA 


.1. 


SDUSWA 

"BITl" DUMP SWA FOR REGION 


. .1. 


SDUSMDMP 

"BIT2" SUMMARY DUMP REQUESTED 


...1 _ 


SDUNSMDP 

"BIT3" DO NOT DUMP SUMMARY DUMP 


_ 1... 


SDUNAPSA 

"BIT4" DO NOT DUMP ALL PSA 


• • • • • 1 • • 


SDUNASQA 

"BIT5" DO NOT DUMP SQA 

4 

(4) ADDRESS 

4 

SDUDCBAD 

ADDRESS USER SUPPLIED DCB 

8 

(8) ADDRESS 

4 

SDUSTORA 

ADDRESS OF LISTA OR STORAGE RANGES 

12 

(C) ADDRESS 

4 

SDUHDRAD 

ADDRESS OF USER DATA 

16 

(10) ADDRESS 

4 

SDUECBAD 

ADDRESS USER SUPPLIED ECB 


SDUMP 

LC28-1389-0 <c) Copyright IBM Corp. 1980, 1985 


SDUMP 

Data Area Descriptions 57 




















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _BESfiBIEIZ fiM 


20 

(14) ADDRESS 

4 

SDUMASID 

SCHEDULE DUMP ASIDS 

20 

(14) ADDRESS 

2 

SDUCASID 

CALLERS ASID 

22 

(16) ADDRESS 

2 

SDUTASID 

TARGET ASID OF SCHEDULE DUMP 

24 

(18) ADDRESS 

4 

SDUASIDP 

ADDRESS CALLERS ASID LIST 

28 

(1C) ADDRESS 

4 

SDUSUMLP 

ADDRESS CALLERS SUMMARY LIST 

32 

(20) CHARACTER 

8 

SDUTUSID 

TSO USER ID THIS DUMP 

32 

(20) ADDRESS 

4 

SDUSYSMS 

ADDR SYSMDUMP 4K SQA AREA 

36 

(24) ADDRESS 

4 

SDUSYSMC 

ADDR SYSMDUMP CSA WORK AREA 

40 

(28) HEX 

1 

SDUFLAG2 

BYTE OF SDUMP CONTROL FLAGS 


1 • • • •••• 


SDULISTA 

"BITO" IsLISTA PARAMETER SPECIFIED 
0=LISTA PARAMETER NOT SPECIFIED 


• 1 • • 


SDUSLSTA 

"BIT1" 1=SUMLSTA PARAMETER SPECIFIED 
0=SUMLSTA PARAMETER NOT SPECIFIED 


•«1 • •••• 


SDUSPEND 

"BIT2" 1=SUSPEND=YES PARAMETER SPECIFIED 
0=SUSPEND=N0 OF PARAMETER LEFT OFF 

41 

(29) HEX 

1 


RESERVED 

42 

(2A) HEX 

2 

SDUTYPE 

BYTE DESCRIBING TYPE PARAMETER 

42 

(2A) HEX 

1 

SDUTYP1 

FIRST BYTE OF TYPE PARAMETERS 


1 • • • • • • • 


SDUTYPXM 

"BITO" 1=TYPE XMEM SPECIFIED 0=TYPE XMEM 
NOT SPECIFIED 


• 1«• • • • • 


SDUTPXME 

"BIT1" 1=TYPE XMEME SPECIFIED 0=TYPE 
XMEME NOT SPECIFIED 

43 

(2B) HEX 

1 

SDUTYP2 

SECOND BYTE OF TYPE PARAMETERS 

44 

(20 HEX 

4 

SDUSDTA2 

EXTENDED SDATA OPTIONS 

44 

(20 HEX 

2 

SDUEXIT 

EXIT ROUTINE OPTIONS 

44 

(20 HEX 

1 

SDUEDAT1 

SDATA OPTIONS FOR EXIT ROUTINES 


1»*» •••• 


SDUGRSQ 

"BITO" 1=GRSQ SDATA OPTION WAS SPECIFIED 

45 

(2D) HEX 

1 

SDUEDAT2 

SDATA OPTIONS FOR EXIT ROUTINES 


SDUMP 

58 MVS/370 Debug Hdbk Vol 5 


SDUMP 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 

ADDITIONAL SDUMP EXITS SHOULD BE ADDED BEFORE THIS COMMENT. 

46 (2E) HEX 2 RESERVED 


SDUMP 

LC28-1389-0 (c) Copyright IBM Corp 


1980, 1985 


SDUMP 

Data Area Descriptions 59 





Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


§sm 


Common Name : RTM System Diagnostic Work Area 
Macro ID : IHASDWA 
DSECT Name : SDWA 

Created by : Global and local SDWA are preallocated; GETMAINed SDNAs; 

SRB mode-IEAVTRTS, Task mode-IEAVTASl 
Subpool and Key : Subpool 0 and key 8; subpool 230 and key 0; 

subpool 234 and key 0 (fetch protected) 

Size : 512 (including variable recording area) 

Pointed to by : Adjacent to each super FRR stack (global SDWA) 
ASXBFRWA field of the ASXB data area (local SDWA) 
RT1WRTCA field of the RT1W data area 
(GETMAIN'ed SDWA for SRB mode) 

RTM2RTCA field of the RTM2WA data area (task mode SDWA) 
Serialization : Global SDWAt Physically disabled or globally locked 

Local SDWAs Local lock 
GETMAIN'ed SDWA: None 

Function : The SDWA provides for communication between the RTM and 
STA/ESTA/FRR recovery routines. This collection of error data is 
also used for documentation of system control program(SCP) errors 
via recording on SYS1.L0GREC. The SDWA is also known as the RTCA. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) STRUCTURE 

0 

SDNA 

, SDWAPTR 

0 

(0) ADDRESS 

4 

SDWAPARM 

PARAMETER LIST ADDRESS IF (E)STA MACRO 
SPECIFIED PARAM OPTION OR 0. FOR FRRS 
THIS IS THE ADDRESS OF THE 6 WORD PARM 
AREA RETURNED BY THE SETFRR MACRO WHEN 
THE PARMAD KEYWORD IS SPECIFIED ON THE 
SETFRR 

4 

(4) ADDRESS 

4 

SDWAFIOB 

ADDRESS OF PURGE 1/0 REQUEST LIST (PIRL) 
OR 0 IF HALT I/O IS REQUESTED ON ENTRY 

TO RETRY ROUTINE FOR (E)STA. 


SDWA 

60 


MVS/370 Debug Hdbk Vol 5 


SDWA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 





Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS _ TYPE LENGTH NAME _ DESCRIPTION 


4 

(4) 

BITSTRING 

4 

SDNAABCC 

ABEND COMPLETION CODE ON ENTRY TO EXIT 
ROUTINE. 

4 

(4) 

BITSTRING 

1 

SDWACMPF 

FLAG BITS IN COMPLETION CODE. 


1. .. 

t t • ♦ 


SDHAREQ 

"X , 80 ,M - ON, SYSABEND/SYSMDUMP/SYSUDUMP 
DUMP TO BE GIVEN. SET IF DUMP=YES 
REQUESTED ON ABEND, CALLRTM OR SETRP 
MACRO. 


.1.. 

• • • » 


SDNASTEP 

"X'40 ,w - ON, JOBSTEP TO BE TERMINATED. 
SET IF STEP OPTION SPECIFIED ON ABEND 
MACRO. 


...1 

• « • # 


SDWASTCC 

"X'10"»- ON, DON'T STORE COMPLETION 

CODE. NOT USED IN 0S/VS2 R2. 

5 

(5) 

BITSTRING 

3 

SDWACMPC 

SYSTEM COMPLETION CODE (FIRST 12 BITS) 
AND USER COMPLETION CODE (SECOND 12 
BITS). 

8 

(8) 

CHARACTER 

8 

SDWACTL1 

BC MODE PSW AT TIME OF ERROR NOT INI¬ 
TIALIZED FOR FRRS. 

8 

(8) 

BITSTRING 

1 

SDWACMKA 

CHANNEL INTERRUPT MASKS. 


1111 

111. 


SDNAIOA 

"X'FE"*- I/O INTERRUPTS (ALL ZEROS OR 

ALL ONES). 


• • • • 

.. .1 


SDWAEXTA 

"X'01"»- EXTERNAL INTERRUPT. 

9 

(9) 

BITSTRING 

1 

SDNAMWPA 

PSW KEY AND 'M-W-P*. 


1111 

, , , , 


SDWAKEYA 

"X'FO"*- PSW KEY. 


• t • • 

.1.. 


SDWAMCKA 

"X'OA'"- MACHINE CHECK INTERRUPT. 


• • • • 

..1. 


SDWAWATA 

"X'02* n — WAIT STATE. 


• • t « 

. . .1 


SDWASPVA 

"X'01'"- SUPERVISOR/PROBLEM-PROGRAM 

MODE. 

10 

(A) 

CHARACTER 

2 

SDWAINTA 

INTERRUPT CODE (LAST 2 BYTES OF INTER¬ 
RUPT CODE IF I/O INTERRUPT). 

12 

(C) 

BITSTRING 

1 

SDWAPMKA 

INSTRUCTION LENGTH CODE, CONDITION CODE, 
AND PROGRAM MASKS. 


11.. 

• • • • 


SDWAILA 

"X'COINSTRUCTION LENGTH CODE. 


. .11 

.... 


SDWACCA 

"X'30 ,n - LAST CONDITION CODE. 


« i • » 

1 ... 


SDWAFPA 

"X'OS"*- FIXED-POINT OVERFLOW. 


• # • • 

.1. . 


SDWADOA 

n X*04***— DECIMAL OVERFLOW. 


• • • • 

.. 1 . 


SDWAEUA 

n X'02 ,n - EXPONENT UNDERFLOW. 


SDWA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 


SDWA 

Data Area Descriptions 61 


1985 







Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


REFSETS_ TYPE LENGTH NAME _ DESCRIPTION 



. 1 


SDMASGA 

"X'01'"- SIGNIFICANCE. 

13 

(D) ADDRESS 

3 

SDNANXTA 

ADDRESS OF NEXT INSTRUCTION TO BE EXE¬ 
CUTED. 

16 

(10) CHARACTER 

8 

SDWACTL2 

BC MODE PSW FROM LAST PRB ON RB CHAIN. 
ZERO FOR FRRS. 

16 

(10) BITSTRING 

1 

SDWACMKP 

CHANNEL INTERRUPT MASKS. 


1111 111. 


SDWAI0P 

"X'FE'"- I/O INTERRUPTS (ALL ZEROS OR 

ALL ONES). 


• ••• • « • 1 


SDWAEXTP 

"X'Ol’"- EXTERNAL INTERRUPT. 

17 

(11) BITSTRING 

1 

SDWAMWPP 

PSW KEY AND 'M-W-P'. 


1111 .... 


SDWAKEYP 

"X'FO*"- PSW KEY. 


• ••• • 1 • • 


SDWAMCKP 

"X'04'"- MACHINE CHECK INTERRUPT. 


•« • • • • X • 


SDWAWATP 

"X*02 ,B - WAIT STATE. 


»»»• • •« 1 


SDWASPVP 

"X*01»■- SUPERVISOR/PROBLEM-PROGRAM 

MODE. 

18 

(12) CHARACTER 

2 

SDNAINTP 

INTERRUPT CODE (LAST 2 BYTES OF INTER¬ 
RUPT CODE IF I/O INTERRUPT). 

20 

(14) BITSTRING 

1 

SDWAPMKP 

INSTRUCTION LENGTH CODE, CONDITION CODE, 
AND PROGRAM MASKS. 


XX** *••• 


SDWAILP 

"X'C0 ,n - INSTRUCTION LENGTH CODE. 


.*11 _ 


SDWACCP 

w X *30*"- LAST CONDITION CODE. 


•••« X... 


SDWAFPP 

B X'08 ,B - FIXED-POINT OVERFLOW. 


• ••• • X •« 


SDWADOP 

"X'04'"- DECIMAL OVERFLOW. 


• *«• *»X * 


SDWAEUP 

"X'02 ,B - EXPONENT UNDERFLOW. 


• ••• ***1 


SDWASGP 

"X'Ol*"- SIGNIFICANCE. 

21 

(15) ADDRESS 

3 

SDWANXTP 

ADDRESS OF NEXT INSTRUCTION TO BE EXE¬ 
CUTED. 

24 

(18) CHARACTER 

64 

SDWAGRSV 

GENERAL PURPOSE REGISTERS AT TIME OF 
ERROR 

24 

(18) SIGNED 

4 

SDWAGR00 

GPR 0. 

28 

(1C) SIGNED 

4 

SDWAGR01 

GPR 1. 

32 

(20) SIGNED 

4 

SDWAGR02 

GPR 2. 


SDWA 

62 


MVS/370 Debug Hdbk Vol 5 


SDWA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 












Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 

36 (24) SIGNED 4 SDWAGR03 GPR 3. 

40 (28) SIGNED 4 SDWAGR04 GPR 4. 

44 (20 SIGNED 4 SDWAGR05 GPR 5. 

48 (30) SIGNED 4 SDWAGR06 GPR 6. 

52 (34) SIGNED 4 SDWAGR07 GPR 7. 

56 (38) SIGNED 4 SDNAGR08 GPR 8. 

60 (30 SIGNED 4 SDWAGR09 GPR 9. 

64 (40) SIGNED 4 SDWAGR10 GPR 10. 

68 (44) SIGNED 4 SONAGRI1 GPR 11. 

72 (48) SIGNED 4 SDWAGR12 GPR 12. 

76 (40 SIGNED 4 SONAGRI3 GPR 13. 

80 (50) SIGNED 4 SDNAGR14 GPR 14. 

84 (54) SIGNED 4 SDNAGR15 GPR 15. 

88 (58) CHARACTER 8 SDNANAME IF PROBLEM PROGRAM MODE NAME OF ABENDING 

PROGRAM* OR ZERO IF NO NAME IS AVAIL¬ 
ABLE. ZERO IF NOT RUNNING UNDER AN RB 

88 (58) ADDRESS 4 SDNARBAD RB ADDRESS OF ABENDING PROGRAM (IF 

SUPERVISOR MODE PROGRAM RUNNING UNDER AN 
RB) 


92 

(50 

HEX 

4 

CONTAINS ZEROS IF SUPERVISOR MODE PRO¬ 
GRAM RUNNING UNDER AN RB OR IF PROGRAM 
NOT RUNNING UNDER AN RB 

96 

(60) 

ADDRESS 

4 SDNAEPA 

ENTRY POINT ADDRESS OF ABENDING PROGRAM. 
ZERO IF NOT RUNNING UNDER AN RB 


SDWA SDWA 

LC28-1389-0 (e) Copyright IBM Corp. 1980, 1985 Data Area Descriptions 63 




















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 

100 (64) ADDRESS 4 SDWAIOBR POINTER TO SDWAFIOB FIELD, OR 0 IF NO 

RETRY, OR 0 IF HALT I/O IS REQUESTED FOR 
(E)STA EXITS. ZERO FOR FRRS 


104 (68) CHARACTER 8 SDWAEC1 EXTENDED CONTROL PSW AT TIME OF 

ERROR(ABEND) 


104 

(68) BITSTRING 

• l*i •••• 

i 

SDWAEMKl 

SDWAPER1 


• « * • • 1 • • 

• • • • • • 1 • 


SDWATRM1 

SDWAIOl 


• ••• » » » 1 


SDWAEXT1 

105 

(69) BITSTRING 
1111 • ••• 

• • • • 1 • • • 

• •« • . 1.. 

i 

SDWAMWP1 

SDWAKEY1 

SDWAECT1 

SDWAMCK1 



• • • • • • 1 • 

SDWAWAT1 


• ••• • * • 1 

SDWAPGM1 

106 

(6A) BITSTRING 

1 SDWAINT1 


1. 

SDWAS1 


••11 •••• 

SDWACC1 


• ••« 1 • • • 

SDWAFP01 


• ••• «1«« 

SDWADEC1 


• «•• • • 1 • 

SDWAEXP1 


.1 

SDWASGN1 

107 

(6B) BITSTRING 

1 


INTERRUPT INFORMATION MASKS 
"X'40'" ON,PROGRAM EVENT RECORDING 
INTERRUPTS CAN OCCUR OFF, PROGRAM EVENT 
RECORDING INTERRUPTS CANNOT OCCUR 
"X'OA'" ON,ADDRESS TRANSLATION ACTIVE 
"X'02*" OFF,I/O INTERRUPTION CAN NOT 
OCCUR ON,I/O INTERRUPTIONS CAN OCCUR 
SUBJECT TO TO CHANNEL MASK BITS IN CON¬ 
TROL REGS 2 AND 3 

"X’Ol'" OFF,EXTERNAL INTERRUPTION CANNOT 
OCCUR ON,EXTERNAL INTERRUPTIONS CAN 
OCCUR SUBJECT TO EXTERNAL SUBCLASS MASK 
BITS OF CONTROL REG 0 
PSW KEY AND ’M-W-P' 

"X»F0 ,n PSW KEY 

"X’08'" EXTENDED CONTROL MODE BIT 
"X'04*" OFF,MACHINE CHECK CANNOT OCCUR 
ON,MACHINE CHECK DUE TO SYSTEM DAMAGE 
AND INSTRUCTION-PROCESSING DAMAGE CAN 
OCCUR OTHER MACHINE CHECKS SUBJECT TO 
MASK BITS IN CONTROL REGISTER 14 
"X , 02 ,M ON,CPU IN WAIT STATE 
"X'01»" ON,PROBLEM STATE OFF, SUPERVISOR 
STATE 

CONDITION CODE AND PROGRAM MASK 
"X'80'" ADDRESS SPACE SELECTION BIT 
"X , 30 ,n CONDITION CODE 
"X'08 ,n FIXED POINT OVERFLOW 
B X'04 ,n DECIMAL OVERFLOW 
n X'02»" EXPONENT UNDERFLOW 
"X'Ol*" SIGNIFICANCE 
RESERVED 


SDWA 

64 


MVS/370 Debug Hdbk Vol 5 


SDWA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 









Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


108 

(60 SIGNED 

4 

SDWANXT1 

ADDRESS OF NEXT INSTRUCTION TO BE EXE¬ 
CUTED. 

108 

(60 CHARACTER 

1 


RESERVED 

109 

(6D) CHARACTER 

3 

SDWAADD1 

INSTRUCTION ADDRESS 

112 

(70) CHARACTER 

8 

SDWAAEC1 

ADDITIONAL EC MODE INFORMATION 

112 

(70) CHARACTER 

1 


RESERVED 

113 

(71) BITSTRING 

1 

SDWAILC1 

INSTRUCTION LENGTH CODE FOR PSW DEFINED 
BY SDWAEC1 


. 11. 


SDWAIL1 

"X'06'" ILC 

114 

(72) CHARACTER 

2 

SDWAINC1 

INTERRUPT CODE. IF PROGRAM CHECK 

OCCURRED THE SUBFIELDS ARE FURTHER 
DIVIDED 

114 

(72) CHARACTER 

1 


RESERVED FOR IMPRECISE INTERRUPTS ON 
PROGRAM CHECK INTERRUPT 

115 

(73) BITSTRING 

1 

SDWAICD1 

8 BIT INTERRUPT CODE IF PROGRAM CHECK 


1 • • i • a a a 


SDWAIPR1 

"X'80*" PER INTERRUPT OCCURRED 


• 1 • • • • a • 


SDWAIMC1 

"X'40 ,B MONITOR CALL INTERRUPT OCCURRED 


..11 1111 


SDWAIPC1 

"X'3F ,n AN UNSOLICITED PROGRAM CHECK HAS 
OCCURRED 

116 

(74) ADDRESS 

4 

SDWATRAN 

VIRTUAL ADDRESS CAUSING TRANSLATION 
EXCEPTION 

120 

(78) CHARACTER 

8 

SDWAEC2 

EXTENDED CONTROL PSW FROM THE RB LEVEL 
WHICH CREATED THE ESTAE EXIT AT THE TIME 
IT LAST INCURRED AN INTERRUPT OR 0 FOR 
ESTAI. OR PSW USED TO GIVE FRR CONTROL 

120 

(78) BITSTRING 

1 

SDWAEMK2 

INTERRUPT INFORMATION MASKS 


• 1.. • a a • 


SDWAPER2 

"X'40 ,n ON,PROGRAM EVENT RECORDING 
INTERRUPTS CAN OCCUR OFF,PROGRAM EVENT 
RECORDING INTERRUPTS CANNOT OCCUR 


• a 1 • • 


SDWATRM2 

"X'04 ,n ON,ADDRESS TRANSLATION ACTIVE 


• ••a a a 1 • 


SDWAI02 

"X'02'" OFF,I/O INTERRUPTION CANNOT 


OCCUR ON,I/O INTERRUPTIONS CAN OCCUR 
SUBJECT TO TO CHANNEL MASK BITS IN CON- 


SDWA SDWA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 Data Area Descriptions 65 







Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 







TROL REGS 2 AND 3 


• • • • 

...1 


SDWAEXT2 

"X'Ol'" OFF,EXTERNAL INTERRUPTION CANNOT 
OCCUR ON,EXTERNAL INTERRUPTIONS CAN 

OCCUR SUBJECT TO EXTERNAL SUBCLASS MASK 
BITS OF CONTROL REG 0 

121 

(79) 

BITSTRING 

1 

SDWAMWP2 

PSW KEY AND 'M-W-P» 


1111 

• • • • 


SDWAKEY2 

"X'FO'" PSW KEY 


• • t * 

1... 


SDWAECT2 

"X'08»" EXTENDED CONTROL MODE BIT 


• • • ♦ 

.1. . 


SDWAMCK2 

"X'04'" OFF,MACHINE CHECK CANNOT OCCUR 
ON,MACHINE CHECK DUE TO SYSTEM DAMAGE 

AND INSTRUCTION-PROCESSING DAMAGE CAN 
OCCUR OTHER MACHINE CHECKS SUBJECT TO 
MASK BITS IN CONTROL REGISTER 14 


• • • • 

. .1. 


SDWAWAT2 

"X*02*" ON,CPU IN WAIT STATE 


• • « • 

. . .1 


SDWAPGM2 

"X'Ol*" ON,PROBLEM STATE OFF, SUPERVISOR 
STATE 

122 

(7A) 

BITSTRING 

1 

SDWAINT2 

CONDITION CODE AND PROGRAM MASK 


1... 

• • » • 


SDWAS2 

"X'80'" ADDRESS SPACE SELECTION BIT 


. .11 

• • • • 


SDWACC2 

"X'30'" CONDITION CODE 


# f V « 

1.. . 


SDWAFP02 

"X'08*" FIXED POINT OVERFLOW 


• • • # 

.1.. 


SDWADEC2 

"X'04*" DECIMAL OVERFLOW 


• • • • 

. .1. 


SDWAEXP2 

"X'02'" EXPONENT UNDERFLOW 


• * ft ft 

.. .1 


SDWASGN2 

"X'01‘" SIGNIFICANCE 

123 

(7B) 

BITSTRING 

1 


RESERVED 

124 

(70 

SIGNED 

4 

SDWANXT2 

ADDRESS OF NEXT INSTRUCTION TO BE EXE¬ 
CUTED 

124 

(70 

CHARACTER 

1 


RESERVED 

125 

(7D) 

CHARACTER 

3 

SDWAADD2 

INSTRUCTION ADDRESS 

128 

(80) 

CHARACTER 

8 

SDWAAEC2 

ADDITIONAL EC MODE INFORMATION 

128 

(80) 

CHARACTER 

1 


RESERVED 

129 

(81) 

BITSTRING 

1 

SDWAILC2 

INSTRUCTION LENGTH CODE FOR PSW DEFINED 
BY SDWAEC2 


• t • • 

.11. 


SDWAIL2 

n X'06 ,n ILC 

130 

(82) 

CHARACTER 

2 

SDWAINC2 

INTERRUPT CODE. IF PROGRAM CHECK 

OCCURRED THE SUBFIELDS ARE FURTHER 
DIVIDED 

130 

(82) 

CHARACTER 

1 


RESERVED FOR IMPRECISE INTERRUPTS ON 


SDWA 

66 


MVS/370 Debug Hdbk Vol 5 


SDWA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 







Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS 

TYPE LENGTH 

NAME 

DESCRIPTION 

131 

(83) BITSTRING 

1 • • • • • • • 

. 1« . . . « » 

..11 1111 

i 

SDHAICD2 

SDWAIPR2 

SDWAIMC2 

SDWAIPC2 

PROGRAM CHECK INTERRUPT 

8 BIT INTERRUPT CODE IF PROGRAM CHECK 

"X'80 ,n PER INTERRUPT OCCURRED 

"X*40 "* MONITOR CALL INTERRRUPT OCCURRED 

"X'3F*" AN UNSOLICITED PROGRAM CHECK HAS 

OCCURRED 

132 

(84) ADDRESS 

4 

SDWATRN2 

VIRTUAL ADDRESS CAUSING TRANSLATION 
EXCEPTION 

136 

(88) CHARACTER 

64 

SDWASRSV 

GENERAL PURPOSE REGISTERS OF THE RB LEV¬ 
EL WHICH CREATED THE ESTAE EXIT AT THE 
TIME IT LAST INCURRED AN INTERRUPT OR 0 
FOR ESTAI FOR FRRS INITIALIZED TO REGIS¬ 
TERS AT TIME OF ERROR. THIS REGISTER 

AREA IS USED TO UPDATE REGISTER CONTENTS 
FOR RETRY IF REQUESTED 

136 

(88) SIGNED 

4 

SDWASROO 

GPR 0. 

160 

(80 SIGNED 

4 

SDHASR01 

GPR 1. 

144 

(90) SIGNED 

4 

SDHASR02 

GPR 2. 

148 

(94) SIGNED 

4 

SDWASR03 

GPR 3. 

152 

(98) SIGNED 

4 

SDWASR04 

GPR 4. 

156 

(90 SIGNED 

4 

SDHASR05 

GPR 5. 

160 

(AO) SIGNED 

4 

SDWASR06 

GPR 6. 

164 

(A4) SIGNED 

4 

SDWASR07 

GPR 7. 

168 

(A8) SIGNED 

4 

SDWASR08 

GPR 8. 

172 

(AC) SIGNED 

4 

SDHASR09 

GPR 9. 

176 

(BO) SIGNED 

4 

SDWASR10 

GPR 10. 


SDWA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SDWA 

Data Area Descriptions 67 













Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OF FSETS _ TYPE LENGTH NAME _ DESCRIPTION 


180 

(B4) SIGNED 

4 

SDWASR11 

GPR 11. 

184 

(B8) SIGNED 

4 

SDNASR12 

GPR 12. 

188 

(BC) SIGNED 

4 

SDWASR13 

GPR 13. 

192 

(CO) SIGNED 

4 

SDWASR14 

GPR 14. 

196 

(C4) SIGNED 

4 

SDWASR15 

GPR 15. 

200 

(C8) CHARACTER 

4 

SDWAIDNT 

SDWA IDENTIFICATION ATTRIBUTES 

200 

CC8) CHARACTER 

1 

SDNASPID 

SUBPOOL ID OF STORAGE CONTAINING THIS 
SDWA 

201 

(C9) CHARACTER 

3 

SDNALNTH 

LENGTH OF THIS SDWA IN BYTES 

204 

(CC) CHARACTER 

28 

SDWAMCH 

CONTAINS MACHINE CHECK DATA IF SDWAMCHK 
IS ON 

204 

(CC) CHARACTER 

8 

SDWASTCK 

BEGINNING AND ENDING STORAGE CHECK 
ADDRESSES. FILLED IN DUE TO STORAGE 

ERROR (SDWASCK) OR A KEY FAILURE (SDWAS- 
KYF). THESE ADDRESSES ARE VALID ONLY IF 
INDICATED BY THE SDWASRVL FLAG. 

204 

(CC) ADDRESS 

4 

SDWASCKB 

BEGINNING VIRTUAL ADDRESS OF STORAGE 
CHECK 

208 

(DO) ADDRESS 

4 

SDNASCKE 

ENDING VIRTUAL ADDRESS OF STORAGE CHECK 

212 

(D4) BITSTRING 

2 

SDWAMCHI 

ADDITIONAL MCH INFORMATION FLAGS 

212 

(D4) BITSTRING 

1 

SDMAMCHS 

MCH FLAG BYTE 


X • • • •••• 


SDWASRVL 

"X*80*" ON,STORAGE ADDRESSES SUPPLIED 
(SDWASTCK, SDWARFSA) ARE VALID. 


• It* •••• 


SDWARCDF 

n X»40'" ON,MACHINE CHECK RECORD NOT 
RECORDED 


••X* •••• 


SDWATSVL 

"X»20'" ON,TIME STAMP IS VALID 


•••X •••• 


SDWAINVP 

"X'10'" ON,STORAGE IS RECONFIGURED, PAGE 
IS INVALIDATED 


• ••• X * •« 


SDWARSRC 

"X'08ON,STORAGE RECONFIGURATION 


SDWA 

68 


MVS/370 Debug Hdbk Vol 5 


SDWA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 










Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 

(SDWARSR1,SDWARSR2) STATUS AVAILABLE. 



• ••• • X • • 


SDWARSRF 

"X»04'" ON,STORAGE RECONFIGURATION NOT 
ATTEMPTED. (SDWARSR1 AND SDMARSR2 ARE 
INVALID) 

213 

(D5) BITSTRING 

1 

SDWAMCHD 

INPUT INFORMATION TO RECOVERY ROUTINE 
CONCERNING A MACHINE CHECK ERROR 


1 • • • «♦ • • 


SDWASKYF 

"X»80 ,n ON,STORAGE KEY FAILURE 


• X • • •••• 


SDWAREGU 

"X'40 ,n ON,GENERAL PURPOSE REGISTER CON¬ 
TENTS AT TIME OF MACHINE CHECK UNPRE¬ 
DICTABLE 


••X* 


SDWAPSWU 

"X'20'" ON,PSH AND/OR CONTROL REGISTERS 
AT TIME OF MACHINE CHECK UNPREDICTABLE 


• • « 1 •••• 


SDWASCK 

"X'10'" ON,INDICATES STORAGE DATA CHECK 


• •«• X «• • 


SDWAACR 

"X»08'" ON,INDICATES ACR REQUEST 


• ••• • X • • 


SDWAINSF 

"X'04 ,n ON,INSTRUCTION FAILURE 


♦ • • • * • 1 * 


SDWAFPRX 

"X'02 ,n ON,CONTENTS OF FLOATING POINT 
REGISTERS AT TIME MACHINE CHECK ARE 
UNPREDICTABLE 


• • • • • • • X 


SDWATERR 

"X"01 ,n ON,TIMER ERROR CAUSES ENTRY TO 
RECOVERY ROUTINES ONLY IF LOGOUT FAILED. 

214 

(D6) CHARACTER 

2 

SDWACPID 

ID OF OF FAILING CPU CAUSING ACR 

216 

(D8) BITSTRING 

1 

SDWARSR1 

ADDITIONAL STORAGE FRAME ERROR INDICA¬ 
TORS AS RETURNED FROM REAL STORAGE 
RECONFIGURATION. 


• ••• • • 1 • 


SDWAMSER 

"X'02' n STORAGE ERROR ALREADY SET IN 
FRAME. 


• ••• • « • 1 


SDNACHNG 

.. x »oi'« CHANGE INDICATOR WAS ON IN 

FRAME. 

217 

(D9) BITSTRING 

1 

SDWARSR2 

ADDITIONAL STORAGE ERROR INDICATORS. 


X * • • •••• 


SDWAOFLN 

n X*80 ,n FRAME OFFLINE OR SCHEDULED TO GO 
OFFLINE IF SDWAINTC IS ON 


• X • • « • • * 


SDWAINTC 

"X'40*" INTERCEPT THE FRAME IS SCHEDULED 
TO GO OFFLINE, OR THE FRAME HAS INCURRED 
A STORAGE ERROR, OR IS V=R 


a • I « •••• 


SDWASPER 

n X , 20STORAGE ERROR PERMANENT ON 

FRAME. 


• •*1 • « • • 


SDWANUCL 

"X'10 ,n FRAME CONTAINS PERMANENT RESI¬ 
DENT STORAGE, I.E. NUCLEUS. 


♦ • • • 1 • • • 


SDMAFSQA 

"X'08'" FRAME IN SQA 


• ••• • 1 • a 


SDWAFLSQ 

"X»04»" FRAME IN LSQA 


SDWA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SDWA 

Data Area Descriptions 69 




Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 



• ••• iilt 


SDWAPGFX 

"X'02'" FRAME IS PAGE FIXED 


• • • • • • • 1 


SDWAVEQR 

"X'01*" FRAME IS VIRTUAL = REAL,OR SCHE¬ 
DULED FOR VIRTUAL = REAL IF SDWAINTC IS 
ON 

218 

(DA) CHARACTER 

2 


RESERVED 

220 

(DC) ADDRESS 

4 

SDWARFSA 

REAL STORAGE FAILING ADDRESS ( VALID 

ONLY IF INDICATED BY SDWASRVL ) 

224 

(E0) CHARACTER 

8 

SDMATIME 

TIME STAMP OF ASSOCIATED MACHINE CHECK 
RECORD 

232 

(E8) BITSTRING 

4 

SDNAFLGS 

INPUT FLAGS DESCRIBING REASONS AND CON¬ 
DITIONS FOR ENTERING A RECOVERY EXIT 
ROUTINE. 

232 

(E8) BITSTRING 

1 

SDWAERRA 

ERROR TYPE CAUSING ENTRY TO RECOVERY 

EXIT 


1 • » • •••« 


SDWAMCHK 

"X*80' n ON INDICATES MACHINE CHECK 


• It* •••• 


SDHAPCHK 

"X'40*" on INDICATES PROGRAM CHECK 


• •1* ♦ • • • 


SDMARKEY 

"X'20'” ON INDICATES CONSOLE RESTART KEY 
HAS DEPRESSED 


• •«X •••• 


SDWASVCD 

"X'10'" ON INDICATES TASK ISSUED SVC 13 


• ••• 1 • • • 


SDWAABTM 

"X'08‘" ON INDICATES SYSTEM FORCED SVC 
13(I.E.ABTERM) 


»* * • »X • • 


SDWASVCE 

"X'04' w ON,INDICATES AN SVC HAS ISSUED 

BY A LOCKED OR SRB ROUTINE 


• • • • • » 1 • 


SDWATEXC 

"X»02‘" ON,INDICATES AN UNRECOVERABLE 
TRANSLATION FAILURE 


• ••• . .. 1 


SDWAPGIO 

"X'Ol'" ON,INDICATES A PAGE I/O ERROR 


• ••• • • * 1 


SDWASTRM 

"X'Ol'" ON,INDICATES AN RTM1 SERVICE 
ROUTINE (SUCH AS IEAVTSR1 PROCESSING 
ITERM OR IEAVTRTM PROCESSING STERM) 
SCHEDULED RTM1 TO CONTINUE PROCESSING AS 
AN SVC ERROR (BY PUTTING SVC 13 IN THE 
PSH TO BE DISPATCHED). 

233 

(E9) BITSTRING 

1 

SDWAERRB 

ADDITIONAL ERROR ENTRY INFORMATION 


• ••• 1 • • • 


SDWATYP1 

"X'08'" ON TYPE 1 SVC IN CONTROL AT TIME 
OF ERROR 


• ••• * 1« « 


SDWAENRB 

"X'04‘" ON ENABLED RB IN CONTROL AT TIME 


SDWA 

70 


MVS/370 Debug Hdbk Vol 5 


SDWA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


.. 1 . 


SDWALDIS 


• *ii • • • 1 

234 (EA) BITSTRING 
1... • • • • 

• 1 • • •••• 

«« 1 « ■ ■ • • 

•••1 •••• 

• ••• 1... 


SDWASRBM 

1 SDWAERRC 
SDWASTAF 

SDWASTAI 

SDWAIRB 

SDWAPERC 

SDMAEAS 


«••• ili* 

••«• ••1■ 

•••• •••1 


SDWASKIP 

SDWALCL 

SDWAGLBL 


235 (EB) BITSTRING 1 SDWAERRD 
1. SDWACLUP 


• 1 • • • • • • 

.«1. • • • ■ 

•••1 •«•• 


SDWANRBE 

SDWASTAE 

SDWACTS 


OF ERROR 

"X'02 ,n ON A LOGICALLY OR PHYSICALLY 
DISABLED ROUTINE MAS IN CONTROL AT THE 
TIME OF ERROR. 

"X'Ol 1 " ON SYSTEM IN SRB MODE AT TIME OF 
ERROR 

ADDITIONAL ERROR ENTRY INFORMATION 
"X’80ON INDICATES A PREVIOUS (E)STA 
OR FRR EXIT FAILED. 
n X'40 ,n ON A (E)STAI EXIT PREVIOUSLY 
RECEIVED CONTROL 

"X^O'" ON AN IRB PRECEDED THE RB THAT 
IS ASSOCIATED MITH THIS EXIT 
"X*10*" ON THIS RECOVERY ROUTINE IS 
BEING PERCOLATED TO 

"X'08'" ON INDICATES A LOWER LEVEL EXIT 

HAS RECOGNIZED AN ERROR AND PROVIDED 

SERVICEABILITY INFORMATION 

"X»04 ,w ON INDICATES FRRS WERE SKIPPED 

"X'02*" ON IND ENTRY AS A LOCAL RESOURCE 

MGR 

"X'Ol'" ON IND ENTRY AS A GLOBAL 
RESOURCE MGR 

ADDITIONAL ERROR ENTRY INFORMATION 
"X'80'" ON INDICATES RECOVERY EXIT ONLY 
TO CLEANUP AND NOT RETRY (IF ESTA EXIT 
AND 33E COMPLETION CODE THE DUMP IS TAK¬ 
EN AFTER ENTRY TO THE RECOVERY ROU¬ 
TINE, IF THE COMPLETION CODE IS OTHER 
THAN 33E AND IT IS AN ESTA EXIT THE DUMP 
IS TAKEN BEFORE ENTRY TO THE RECOVERY 
ROUTINE) 

"X'40*" ON RB ASSOCIATED WITH THIS ESTA 
EXIT HAS NOT IN CONTROL AT TIME OF ERROR 
NEVER ON FOR FRRS 

"X'20*" ON THIS ESTA EXIT HAS BEEN 
ENTERED FOR A PREVIOUS ABEND NEVER ON 
FOR FRRS 

"X'lO'" ON,THIS TASK WAS NOT IN CONTROL 
AT TIME OF ERROR BUT A TASK WITHIN THE 
SAME JOBSTEP TREE REQUESTED A ‘STEP* 


SDWA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SDWA 

Data Area Descriptions 71 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 

ABEND. ONLY 'ON* IF SDWACLUP IS 'ON' 



• ••• 1 » i < 


SDNAMABD 

"X'OS"* ON,THIS TASK WAS NOT IN CONTROL 
AT TIME OF ERROR BUT AN ANCESTOR OF THIS 
TASK HAS ABEND'ED ONLY 'ON' IF SDWACLUP 
IS 'ON*. 


• • • • * X • • 


SDWARPIV 

"X'04"* ON, THE REGISTERS, PSW AND CON¬ 
TROL REGISTERS AT TIME OF ERROR ARE UNA¬ 
VAILABLE 


• • •« • * X • 


SDWAMCIV 

"X'02"* ON,MACHINE CHECK ERROR INFORMA¬ 
TION IS UNAVAILABLE. 


• ••• till 


SDWAERFL 

"X'Ol'" ON,ERRORID INFORMATION AVAILABLE 

236 

CEC) CHARACTER 

2 

SDWAFMID 

ASID OF MEMORY IN WHICH ERROR OCCURRED. 
=0, IF THE MEMORY IS CURRENT NOT=0, IF 
OTHER MEMORY IS CURRENT FOR FRRS- IF THE 
VALUE IS NON ZERO THE FRR IS RECEIVING 
CONTROL IN THE MASTER SCHEDULER ADDRESS 
SPACE AND CANNOT ADDRESS THE PRIVATE 

AREA OF THE FAILING ADDRESS SPACE. FOR 
ESTA- IF THE VALUE IS NON ZERO ENTRY IS 
DUE TO CROSS MEMORY ABTERM. 

238 

CEE) BITSTRING 

1 

SDWAIOFS 

THIS IS THE CURRENT I/O STATUS CTHE I/O 
PROCESSING REQUESTED BY THE FIRST CE)STA 
EXIT IS THE ONLY REQUEST HONORED ) 


1 • • • • * * • 


SDWAIOQR 

•’X'80"' ON,I/O FOR FAILING PROGRAM HAS 
BEEN QUIESCED AND IS RESTOREABLE 


• 1 • « •••• 


SDWAIOHT 

"X'40"* ON,I/O FOR FAILING PROGRAM HAS 
BEEN HALTED AND IS NOT RESTOREABLE 


• •1* •••• 


SDWAN0I0 

"X'20"* ON,FAILING PROGRAM HAS NO I/O 
OUTSTANDING 


•••1 •••• 


SDNANIOP 

"X'10'" ON,USER REQUESTED NO I/O PROC¬ 
ESSING 

239 

(EF) CHARACTER 

1 

SDWACPUI 

ERRORID LOGICAL CPUID 

240 

CFO) ADDRESS 

4 

SDWARTYA 

ADDRESS OF RETRY ROUTINE 

244 

CF4) ADDRESS 

4 

SDWARECA 

ADDRESS OF VARIABLE RECORDING AREA WITH¬ 
IN SDWA 


SDWA 

72 


MVS/370 Debug Hdbk Vol 5 


SDWA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 






Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME_DESCRIPTION 


248 (F8) CHARACTER 4 SDWACPUA ADDRESS OF CPU HOLDING RESOURCE WHICH 

CAUSES VALID SPIN ON CURRENT CPU USED 
WITH RESTART KEY ERROR TYPE.IF THIS 
FIELD IS VALIDLY FILLED IN BY AN FRR THE 
FRRS MAINLINE PROGRAM WILL BE RESUMED AT 
THE NEXT SEQUENTIAL INSTRUCTION. NOT 
VALID FOR ESTAE EXITS. 


248 

(F8) CHARACTER 

2 


RESERVED 

250 

(FA) SIGNED 

2 

SDWALCPU 

LOGICAL ADDRESS OF CPU HOLDING RESOURCE 

252 

(FC) BITSTRING 

4 

SDWAPARQ 

FLAGS SET BY RECOVERY ROUTINE TO REQUEST 
FURTHER PROCESSING ACTION 

252 

(FC) BITSTRING 

1 

SDWARCDE 

RETURN CODE FROM RECOVERY ROUTINE TO 
INDICATE RETRY OR TERMINATION 




SDWACWT 

"0" 0 /CONTINUE WITH TERMINATION. THIS 
INDICATION IMPLIES PERCOLATION 


. 1 " 


SDWARETY 

"4" 4 /RETRY USING RETRY ADDRESS IN 
SDWARTYA FIELD 


...1 _ 


SDWAPSTI 

"16" 16,PREVENT FURTHER (E)STAI PROCESS¬ 
ING 

253 

(FD) BITSTRING 

1 

SDWAACF2 

FLAGS TO INDICATE ADDITIONAL PROCESSING 
REQUESTS 


X • ■ • 


SDWARCRD 

"X'8Q»" ON,RECORDING REQUESTED 


• • X • * • • • 


SDWASPIN 

"X'20*" ON,PROGRAM INTERRUPTED VIA THE 
RESTART KEY WAS IN A VALID SPINCSET BY 
THE SETRP MACRO WHEN CPU ADRESS IS SPEC¬ 
IFIED ALONG WITH THE CPU ADDRESS IN 
SDWACPUA FIELD TO ALLOW RESTART OF THE 
ALTERNATE CPU) 


• • • 1 • • • • 


SDWARERR 

"X'lO'" ON,RETRY USING THE CROSS MEMORY 
ADDRESSING ENVIRONMENT AT THE TIME OF 

THE ERROR. OFF,RETRY USING THE CROSS 
MEMORY ADDR ENV ON ENTRY TO THE FRR. 


• ••• 1 • • • 


SDWAUPRG 

"X'08 ,n ON,UPDATED REGISTERS STARTING 
WITH SDWASROO ARE TO BE USED FOR RETRY 


• •« • • 1 • • 


SDWAFREE 

»X'04'" ON,SDWA/RTCA TO BE FREED PRIOR 

TO RETRY. ONLY VALID FOR ESTA EXITS 


• * • • • • 1 ■ 


SDWASERP 

"X*02*" ON,SERIALIZE PERCOLATION (USED 


WHEN AN SRB MODE FRR PERCOLATES SERIALLY 


SDWA SDWA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 Data Area Descriptions 73 




Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 

TO A RELATED TASK) 



• • • 

« • • • X 


SDWACML 

"X'01»" ON,FREE THE CROSS MEMORY LOCAL 
LOCK 

254 

(FE) 

BITSTRING 

1 

SDWAACF3 

FLAGS INDICATING WHAT GLOBAL LOCKS ARE 

TO BE FREED (KEY 0 SUPERVISOR ONLY) ONLY 
VALID FOR FRRS. 



1 • » i t 


SDWADISP 

"X'lO'" ON,THE DISPATCHER LOCK 



. 1 ... 


SDWAASMP 

n X’08'" ON,THE ASM CLASS LOCK Z40WPXH 


• • • 

. .1.. 


SDWASALL 

"X'04'" ON, THE SALLOC LOCK 


I • • 

. .. 1 . 


SDWAIPRG 

"X'02'" ON, THE IOSYNCH LOCK 


• • • 

. ...1 


SDWAICAT 

"X'Ol'" ON,THE IOSCAT LOCK 

255 

(FF) 

BITSTRING 

1 

SDWAACF4 

ADDITIONAL LOCKS TO BE FREED FOR FRRS 


1. . 

ft ft ft ft ft 


SDWAIUCB 

"X'80'" ON, THE IOSUCB LOCK 


. 1 . 

ft ft ft ft ft 


SDWAILCH 

"X'40‘" ON, THE IOSLCH LOCK 


. .1 

• • • • • 


SDWATNCB 

"X'20*" RESERVED LOCK Z40WPXH 


* * t 

1 • • • • 


SDWATDNB 

"X'lO*" RESERVED LOCK Z40WPXH 


• ♦ • 

. 1 ... 


SDWATADB 

"X'08»" RESERVED LOCK Z40WPXH 


ft ft ft 

. . 1 .. 


SDWAOPTM 

"X'04‘" ON,THE SYSTEM RESOURCES MGR(SRM) 
LOCK LOCK 


ft ft ft 

. .. 1 . 


SDWACMS 

"X»02‘" ON,THE CMS LOCK 


ft • ft 

. ...1 


SDNAFLLK 

"X'Ol"* ON,THE LOCAL LOCK 

256 

(100) 

CHARACTER 

32 

SDWALKWA 

LOCK AREA 

256 

(100) 

CHARACTER 

32 

SDWALKWS 

LOCKWORDS REQUIRED TO FREE GLOBAL LOCKS 
ONLY USED FOR FRRS 

256 

(100) 

ADDRESS 

4 

SDWAICLW 

LOCKWORD FOR THE IOSCAT LOCK 

260 

(104) 

ADDRESS 

4 

SDWAIULW 

LOCKWORD FOR THE IOSUCB LOCK 

264 

(108) 

ADDRESS 

4 

SDWAILLW 

LOCKWORD FOR THE IOSLCH LOCK 

268 

(10C) 

ADDRESS 

4 

SDWAIPLW 

LOCKWORD FOR THE IOSYNCH LOCK 

272 

(110) 

ADDRESS 

4 

SDWAAPLW 

LOCKWORD FOR THE ASM CLASS LOCK Z40WPXH 

276 

(114) 

ADDRESS 

4 

SDWATNLW 

LOCKWORD RESERVED Z40WPXH 

280 

(118) 

ADDRESS 

4 

SDNATDLN 

LOCKWORD RESERVED Z40WPXH 


SDWA 

74 


MVS/370 Debug Hdbk Vol 5 


SDWA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


284 

(11C) 

ADDRESS 

4 

SDWATALW 

LOCKWORD RESERVED Z40WPXH 

288 

(120) 

CHARACTER 

2 

SDWAASID 

ASID FOR LOGREC DEBUGGING (HOME ASID) 

290 

(122) 

CHARACTER 

2 

SDWASEQ# 

ERRORID SEQUENCE NUMBER 

292 

(124) 

CHARACTER 

24 

SDWARECP 

RECORDING PARAMETERS (MODULE,CSECT AND 
RECOVERY ROUTINE NAMES-RESPECTIVELY) 

292 

(124) 

CHARACTER 

8 

SDWAMODN 

THE LOAD MODULE NAME INVOLVED IN THE 
ERROR (SUPPLIED BY THE RECOVERY ROUTINE) 

300 

(120 

CHARACTER 

8 

SDWACSCT 

THE CSECT (MICROFICHE) NAME INVOLVED IN 
THE ERROR (SUPPLIED BY THE RECOVERY ROU¬ 
TINE) 

308 

(134) 

CHARACTER 

8 

SDWAREXN 

THE RECOVERY ROUTINE (MICROFICHE) NAME 
HANDLING THE ERROR (SUPPLIED BY THE 
RECOVERY ROUTINE) 

316 

(130 

ADDRESS 

4 

SDWADPLA 

POINTER TO DUMP PARAMETER LIST RESIDING 
IN SDWA 

320 

(140) 

CHARACTER 

8 

SDWASNPA 

SNAP PARAMETER LIST FLAGS 

320 

(140) 

CHARACTER 

4 

SDWADUMP 

DUMP CHARACTERISTICS 

320 

(140) 

CHARACTER 

1 

SDWADPID 

ID OF DUMP REQUESTED 

321 

(141) 

BITSTRING 

1 

SDWADPFS 

DUMP FLAGS 


1... 

• • • * 


SDWADPT 

"X'80 *" ALWAYS OFF, INDICATES SNAP DUMP 
REQUEST 


.1.. 

• • • • 


SDWADLST 

"X*40ALWAYS ON, INDICATES 0S/VS2 REL. 
2 DUMP PARAMETER LIST SUPPLIED USED BY 
RTM TO INDICATE DUMP OPTIONS ARE AVAIL¬ 
ABLE IN THE SDWA 


. .1. 

• • • • 


SDWAENSN 

"X , 20 ,n ON,ENHANCED DUMP OPTIONS 


• • < • 

. .1. 


SDWASLST 

"X'02'" ON,STORAGE LISTS SUPPLIED FOR 
DUMP 

322 

(142) 

BITSTRING 

1 

SDWADPF2 

DUMP FLAGS 2 


1... 

• • • • 


SDWADVS3 

"X'80 ,n ON, STORAGE RANGES IN SDWADSR, 


SDWA SDWA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 Data Area Descriptions 75 











Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


flEE S E I S_HEi_ LENGTH NAME _ DESCRIPTION 

OFF, STORAGE RANGES IN SDWADPSL 


323 

(143) 

CHARACTER 

1 


RESERVED 

324 

(144) 

CHARACTER 

4 

SDHADDAT 

SDATA AND PDATA OPTIONS 

324 

(144) 

CHARACTER 

2 

SDNASDAT 

SDATA OPTIONS 

324 

(144) 

BITSTRING 

1 

SDNASDAO 

SDATA OPTIONS FLAG ONE 


1. . 

• • • • • 


SDNANUC 

"X'80 ,n DISPLAY NUCLEUS 


.1. 

• • • • • 


SDWASQA 

"X'40 ,w DISPLAY SQA 


..1 

• • • t • 


SDWALSQA 

"X'20'" DISPLAY LSQA 


• • • 

L «• • • 


SDWASWA 

"X'10*" DISPLAY SWA 


• • • 

. i... 


SDWAGTF 

"X'08'" DISPLAY GTF INCORE TRACE TABLE 


• • • 

. ,i.. 


SDNACBS 

"X'04'" FORMAT AND DISPLAY CONTROL 

BLOCKS 


• • • 

. ..i. 


SDWAQQS 

"X'02‘" FORMAT AND DISPLAY QCBS/QELS 


• • • 

. ...i 


SDWADM 

"X'Ol*" FORMAT DATA MGT CONTROL BLOCKS 

325 

(145) 

BITSTRING 

1 

SDHASDA1 

SDATA OPTIONS 


1.. 

• • • • • 


SDWAIO 

"X'80 f " FORMAT I/O SUPERVISOR CONTROL 
BLOCKS 


.1. 

• • • • • 


SDWAERR 

"X'40 ,n FORMAT ERROR CONTROL BLOCKS 

326 

(146) 

BITSTRING 

1 

SDNAPDAT 

PDATA OPTIONS 


1. . 

« • • • • 


SDWADSAS 

"X'80"* DISPLAY SAVE AREAS 


.1. 

« • • • » 


SDWADSAH 

"X'40DISPLAY SAVE AREA HEADER 


..1 

« • • • * 


SDWADREG 

"X'20'" DISPLAY REGISTERS 



1 • • • • 


SDWATLPA 

"X'10'" DISPLAY LPA MODULES OF TASK 


• • • 

. 1... 


SDWATJPA 

"X f 08»" DISPLAY JPA MODULES OF TASK 


• • • 

. .1.. 


SDWADPSW 

"X'04 ,n DISPLAY PSW 


• • • 

. ..1. 


SDWAUSPL 

"X , 02*" DISPLAY USER SUBPOOLS 

327 

(147) 

BITSTRING 

1 


RESERVED 

328 

(148) 

CHARACTER 

36 

SDWADPSA 

DUMP RANGES AREA 

328 

(148) 

CHARACTER 

32 

SDWADPSL 

DUMP STORAGE LISTS (MAX 4 RANGES AVAIL¬ 
ABLE) 

328 

(148) 

ADDRESS 

4 

SDWAFRM1 

BEGINNING ADDRESS FOR STORAGE RANGE 1 

332 

(140 

ADDRESS 

4 

SDWAT01 

ENDING ADDRESS FOR STORAGE RANGE 1 


SBWA 

76 


MVS/370 Debug Hdbk Vol 5 


SDWA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


336 

(150) 

ADDRESS 

4 

SDWAFRM2 

BEGINNING ADDRESS FOR STORAGE RANGE2 

340 

(154) 

ADDRESS 

4 

SDWAT02 

ENDING ADDRESS FOR STORAGE RANGE 2 

344 

(158) 

ADDRESS 

4 

SDWAFRM3 

BEGINNING ADDRESS FOR STORAGE RANGE 3 

348 

(150 

ADDRESS 

4 

SDWAT03 

ENDING ADDRESS FOR STORAGE RANGE 3 

352 

(160) 

ADDRESS 

4 

SDWAFRM4 

BEGINNING ADDRESS FOR STORAGE RANGE 4 

356 

(164) 

ADDRESS 

4 

SDWAT04 

ENDING ADDRESS FOR STORAGE RANGE 4 

360 

(168) 

ADDRESS 

4 


RESERVED SDWAVERI IS TO INDICATE THE 
VERSION OF THE SDWA VIA A NUMBER IN THE 
SDHAVID 

364 

(160 

CHARACTER 

4 

SDWAVERI 

SDWA VERSION INDICATOR 

364 

(160 

CHARACTER 

2 

SDWAVERF 

FFFF INDICATES VID FIELD IS VALID 

366 

(16E) 

« • • 

CHARACTER 

2 

SDWAVID 

SDWAVS3 

VERSION INDICATOR 

"l" 1, INDICATES THE SDWA IS AT AN 

MVS/SYSTEM PRODUCT RELEASE 2 LEVEL 

368 

(170) 

ADDRESS 

4 

SDWAXPAD 

ADDRESS OF THE EXTENSION POINTERS 

372 

(174) 

CHARACTER 

12 

SDWAXM 

CROSS MEMORY INFORMATION 

372 

(174) 

CHARACTER 

8 

SDWACRGS 

CONTROL REGISTERS 3 AND 4 

372 

(174) 

CHARACTER 

4 

SDWACR3 

CONTROL REGISTER 3 

372 

(174) 

CHARACTER 

2 

SDWAKM 

KEY MASK 

374 

(176) 

CHARACTER 

2 

SDWASCND 

ASID OF THE SECONDARY ADDR SPACE SASID 

376 

(178) 

CHARACTER 

4 

SDWACR4 

CONTROL REGISTER 4 

376 

(178) 

CHARACTER 

2 

SDHAAX 

AUTHORIZATION INDEX 

378 

(17A) 

CHARACTER 

2 

SDWAPRIM 

ASID OF THE PRIMARY ADDR SPACE PASID 

380 

(170 

ADDRESS 

4 

SDWACMLA 

ADDRESS OF ASCB OF CML TO BE FREED 


SDWA 

LC28-1389-0 <c) Copyright IBM Corp. 1980, 1985 


SDWA 

Data Area Descriptions 77 

















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


384 

(180) 

CHARACTER 

8 

SDWAC0MU 

FRR TO ESTAE COMMUNICATION BUFFER 

392 

(188) 

ADDRESS 

4 

SDWAC0MP 

THIS WORD IS PROVIDED FOR COMMUNICATION 
OF ADDITIONAL RECOVERY DATA ON A PER 
COMPONENT BASIS (FOR 0S/VS2 RELEASE 2 
THIS FIELD IS ONLY USED BY DATA MANAGER 
) 

396 

(180 

CHARACTER 

4 

SDWAERTM 

ERRORID TIME STAMP 

400 

(190) 

CHARACTER 

264 

SDWARA 

VARIABLE RECORDING AREA PREFIXED BY A 

TWO BYTE LENGTH FIELD OF AREA, A ONE 

BYTE FLAG FIELD, AND A ONE BYTE FIELD 
WITH LENGTH OF USER SUPPLIED RECORDING 
INFORMATION 

400 

(190) 

CHARACTER 

2 

SDHAVRAL 

LENGTH OF VARIABLE RECORDING AREA 

402 

(192) 

BITSTRING 

1 

SDWADPVA 

BITS THAT DEFINE DATA IN VARIABLE AREA 


1. . 

♦ • • • • 


SDHAHEX 

"X’80'" SDWAVRA DATA TO BE PRINTED BY 
EREP IN HEX 


.1. 

• • • • • 


SDWAEBC 

"X'40SDWAVRA DATA TO BE PRINTED BY 
EREP IN EBCDIC 


. .1 

• • i • I 


SDHAVRAM 

n X'20 ,n SDWAVRA DATA IS IN THE FORMAT 
MAPPED BY THE VRAMAP DSECT (IHAVRA MAC¬ 
RO) 

403 

(193) 

CHARACTER 

1 

SDHAURAL 

LENGTH OF USER SUPPLIED INFORMATION IN 
THE VARIABLE RECORDING AREA (ZEROED 
BEFORE EACH RECOVERY ROUTINE IS INVOKED) 

404 

(194) 

CHARACTER 

255 

SDWAVRA 

VARIABLE RECORDING AREA 

659 

(293) 

CHARACTER 

5 

SDWARRSV 

FILLER TO DOUBLEWORD BDY 

664 

(298) 

FLOATING 

8 

SDWAEND 

END OF NON-EXTENDED SDWA 

0 

(0) 

STRUCTURE 

0 

SDWARC1 

, RECORDABLE EXTENSION, BASED ON 

SDWASRVP 

0 

(0) 

CHARACTER 

64 

SDWASERV 

ADDITIONAL COMPONENT SERVICE DATA 

0 

(0) 

CHARACTER 

5 

SDWACID 

COMPONENT ID OF THE COMPONENT INVOLVED 


SDMA 

78 


MVS/370 Debug Hdbk Vol 5 


SDWA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 









Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 

IN THE ERROR (FOR EXAMPLE, SC1CR) 


5 

(5) 

CHARACTER 

23 

SDWASC 

NAME OF THE SUBCOMPONENT AND THE MODULE 
SUBFUNCTION INVOLVED IN THE ERROR 

28 

C1C) 

CHARACTER 

16 

SDWAMLVL 

LEVEL OF THE MODULE INVOLVED IN THE 

ERROR 

28 

(1C) 

CHARACTER 

8 

SDWAMDAT 

ASSEMBLY DATE OF THE MODULE INVOLVED IN 
THE ERROR 

36 

(24) 

CHARACTER 

8 

SDWAMVRS 

VERSION OF THE MODULE PTF OR PRODUCT 
NUMBER 

94 

(20 

CHARACTER 

4 

SDWACRC 

COMPONENT REASON CODE OR RETURN CODE 
ASSOCIATED WITH THE ABEND 

44 

(20 

SIGNED 

4 

SDWAHRC 

HEXADECIMAL COMPONENT REASON CODE OR 
RETURN CODE ASSOCIATED WITH THE ABEND 

48 

(30) 

CHARACTER 

8 

SDWARRL 

LABEL OF THE RECOVERY ROUTINE THAT 

FILLED IN THIS SDWA 

56 

(38) 

CHARACTER 

4 

SDWACIDB 

THE COMPONENT ID BASE (PREFIX) NUMBER, 
SUCH AS 5741. 

60 

(30 

CHARACTER 

4 


RESERVED 

64 

(40) 

FLOATING 

8 

SDWASEND 

END OF SERV EXTENSION OF SDWA 

0 

(0) 

STRUCTURE 

0 

SDWAPTRS 

, POINTED TO BY SDWAXPAD, THIS PTR SEC¬ 
TION MUST BE A DOUBLEWORD LENGTH (MULTI¬ 
PLE OF 8) AND ALL EXTENSIONS MUST BE A 
DOUBLEWORD LENGTH (MULTIPLE OF 8) 

0 

(0) 

ADDRESS 

4 

SDWADSRP 

DUMP STORAGE RANGES PTR 

4 

(4) 

ADDRESS 

4 

SDWASRVP 

ADDITIONAL COMPONENT SERVICE DATA PTR 

8 

(8) 

FLOATING 

8 

SDWAPEND 

END OF PTRS EXTENSION OF SDWA 


SDWA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SDWA 

Data Area Descriptions 79 















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 

0 (0) STRUCTURE 0 SDWANRC1 , N0NREC0RDABLE EXTENSION* BASED 

SDWADSRP 

0 (0) CHARACTER 240 SDWADSR DUMP STORAGE RANGES 

240 (F0) FLOATING 8 SDWAREND END OF DSR EXTENSION OF SDWA 

SDWALEN "SDWAEND-SDWA" LENGTH OF SDWA 

_ 1... SDWAPLEN "SDWAPEND-SDWAPTRS" LENGTH OF PTRS 

EXTENSION 

1111 _ SDWARLEN "SDWAREND-SDWANRC1" LENGTH OF DSR EXTEN¬ 

SION 

.1. SDWACLEN "SDWASEND-SDWARC1" LENGTH OF SERV EXTEN¬ 

SION 

SDWAMLEN "SDWALEN+SDWAPLEN+SDWACLEN" TOTAL LENGTH 

OF SUPER STACK SDWA AND EXTENSIONS 
SDWATL EN "SDWAL EN+SDWAPL EN+SDWACL EN+SDWARL EN" 

TOTAL LENGTH OF SDWA AND EXTENSIONS 
SDWASLEN "SDWALEN+SDWAPLEN+SDWACLEN+272" GETMAIN 

LENGTH FOR SUPER STACK FRR SDWA 
SDWAFLEN "SDWALEN+SDWAPLEN+SDWACLEN+SDWARLEN+272" 

GETMAIN LENGTH FOR NORMAL STACK FRR SDWA 
. SDWANOPR "0" THIS FIELD IS ONLY DEFINED IN ASSEM¬ 
BLER VERSION OF THE SDWA. ITS PURPOSE IS 
TO FLAG INCOMPATABLE USE OF SETRP AND 
SDWA. 

664 (298) STRUCTURE 0 SDWA 


SDWA 

80 


MVS/370 Debug Hdbk Vol 5 


SDWA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 






Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


CROSS REFERENCE 


NAME 

HEX 

OFFSET 

HEX 

VALUE 

NAME 

EBHHI 

HEX 

VALUE 

NAME 

HEX 

OFFSET 

HEX 

VALUE 

SDWA 

298 


SDWACR4 

178 


SDWAENSN 

141 

20 

SDWAABCC 

4 


SDWACSCT 

12C 


SDWAEPA 

60 


SDWAABTM 

E8 

08 

SDWACTL1 

8 


SDWAERFL 

EB 

01 

SDWAACF2 

FD 


SDWACTL2 

10 


SDWAERR 

145 

40 

SDWAACF3 

FE 


SDWACTS 

EB 

10 

SDWAERRA 

E8 


SDWAACF4 

FF 


SDWACWT 

FC 

00 

SDWAERRB 

E9 


SDWAACR 

D5 

08 

SDHADDAT 

144 


SDWAERRC 

EA 


SDWAADD1 

6D 


SDNADEC1 

6A 

04 

SDWAERRD 

EB 


SDMAADD2 

7D 


SDWADEC2 

7A 

04 

SDWAERTM 

18C 


SDWAAEC1 

70 


SDWADISP 

FE 

10 

SDWAEUA 

C 

02 

SDHAAEC2 

80 


SDMADLST 

141 

40 

SDWAEUP 

14 

02 

SDWAAPLW 

110 


SDWADM 

144 

01 

SDWAEXP1 

6A 

02 

SDWAASID 

120 


SDWADOA 

C 

04 

SDWAEXP2 

7A 

02 

SDWAASMP 

FE 

08 

SDWADOP 

14 

04 

SDWAEXTA 

8 

01 

SDWAAX 

178 


SDWADPFS 

141 


SDWAEXTP 

10 

01 

SDWACBS 

144 

04 

SDWADPF2 

142 


SDWAEXT1 

68 

01 

SDWACCA 

C 

30 

SDWADPID 

140 


SDWAEXT2 

78 

01 

SDWACCP 

14 

30 

SDWADPLA 

13C 


SDWAFIOB 

4 


SDWACC1 

6A 

30 

SDWADPSA 

148 


SDWAFLEN 

FO 

04E0 

SDWACC2 

7A 

30 

SDWADPSL 

148 


SDWAFLGS 

E8 


SDWACHNG 

D8 

01 

SDWADPSW 

146 

04 

SDWAFLLK 

FF 

01 

SDWACID 

0 


SDWADPT 

141 

80 

SDWAFLSQ 

D9 

04 

SDMACIDB 

38 


SDWADPVA 

192 


SDWAFMID 

EC 


SDMACLEN 

FO 

40 

SDWADREG 

146 

20 

SDWAFPA 

C 

08 

SDWACLUP 

EB 

80 

SDWADSAH 

146 

40 

SDWAFPOl 

6A 

08 

SDWACMKA 

8 


SDWADSAS 

146 

80 

SDWAFP02 

7A 

08 

SDWACMKP 

10 


SDWADSR 

0 


SDWAFPP 

14 

08 

SDWACML 

FD 

01 

SDWADSRP 

0 


SDWAFPRX 

D5 

02 

SDWACMLA 

17C 


SDWADUMP 

140 


SDWAFREE 

FD 

04 

SDWACMPC 

5 


SDWADVS3 

142 

80 

SDWAFRM1 

148 


SDWACMPF 

4 


SDWAEAS 

EA 

08 

SDWAFRM2 

150 


SDWACMS 

FF 

02 

SDWAEBC 

192 

40 

SDWAFRM3 

158 


SDWACOMP 

188 


SDWA ECU 

69 

08 

SDWAFRM4 

160 


SDWACOMU 

180 


SDWAECT2 

79 

08 

SDWAFSQA 

D9 

08 

SDWACPID 

D6 


SDWAEC1 

68 


SDWAGLBL 

EA 

01 

SDWACPUA 

F8 


SDWAEC2 

78 


SDWAGRSV 

18 


SDWACPUI 

EF 


SDWAEMK1 

68 


SDWAGROO 

18 


SDWACRC 

2C 


SDWAEMK2 

78 


SDWAGR01 

1C 


SDWACRGS 

174 


SDWAEND 

298 


SDWAGR02 

20 


SDWACR3 

174 


SDWAENRB 

E9 

04 

SDWAGR03 

24 


SDWA 








SDWA 

LC28-1389-0 

(c) Copyright IBM 

Corp. 1980/ 

1985 


Data Area Descriptions 81 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


HEX HEX HEX HEX HEX HEX 


NAME 


VALUE 

NAME 

III II ■Hill M 

NAME 

OFFSET VALUE 

SDWAGR04 

28 


SDWAIOFS 

EE 


SDWAMODN 

124 


SDWAGR05 

2C 


SDWAIOHT 

EE 

40 

SDWAMSER 

D8 

02 

SDWAGR06 

30 


SDWAIOP 

10 

FE 

SDWAMVRS 

24 


SDWAGR07 

34 


SDWAIOQR 

EE 

80 

SDWAMWPA 

9 


SDWAGR08 

38 


SDWAI01 

68 

02 

SDWAMWPP 

11 


SDWAGR09 

3C 


SDWAI02 

78 

02 

SDWAMWP1 

69 


SDHAGR10 

40 


SDWAIPC1 

73 

3F 

SDWAMWP2 

79 


SDMAGR11 

44 


SDWAIPC2 

83 

3F 

SDWANAME 

58 


SDWAGR12 

48 


SDWAIPLW 

IOC 


SDWANIOP 

EE 

10 

SDWAGR13 

4C 


SDWAIPRG 

FE 

02 

SDWANOIO 

EE 

20 

SDHAGR14 

50 


SDWAIPR1 

73 

80 

SDWANOPR 

FO 

00 

SDWAGR15 

54 


SDWAIPR2 

83 

80 

SDWANRBE 

EB 

40 

SDWAGTF 

144 

08 

SDWAIRB 

EA 

20 

SDWANRC1 

0 


SDWAHEX 

192 

80 

SDWAIUCB 

FF 

80 

SDWANUC 

144 

80 

SDHAHRC 

2C 


SDWAIULW 

104 


SDWANUCL 

D9 

10 

SDNAICAT 

FE 

01 

SDWAKEYA 

9 

FO 

SDWANXTA 

D 


SDHAICD1 

73 


SDWAKEYP 

11 

FO 

SDWANXTP 

15 


SDHAICD2 

83 


SDWAKEY1 

69 

FO 

SDWANXT1 

6C 


SDHAICLH 

100 


SDWAKEY2 

79 

FO 

SDWANXT2 

7C 


SDHAIDNT 

C8 


SDWAKM 

174 


SDWAOFLN 

D9 

80 

SDHAILA 

C 

CO 

SDWALCL 

EA 

02 

SDWAOPTM 

FF 

04 

SDHAILCH 

FF 

40 

SDWALCPU 

FA 


SDWAPARM 

0 


SDWAILCl 

71 


SDWALDIS 

E9 

02 

SDWAPARQ 

FC 


SDWAILC2 

81 


SDWALEN 

FO 

0298 

SDWAPCHK 

E8 

40 

SDWAILLW 

108 


SDWALKWA 

100 


SDWAPDAT 

146 


SDWAILP 

14 

CO 

SDWALKWS 

100 


SDWAPEND 

8 


SDWAIL1 

71 

06 

SDWALNTH 

C9 


SDWAPERC 

EA 

10 

SDWAIL2 

81 

06 

SDWALSQA 

144 

20 

SDWAPER1 

68 

40 

SDWAIMC1 

73 

40 

SDWAMABD 

EB 

08 

SDWAPER2 

78 

40 

SDWAIMC2 

83 

40 

SDWAMCH 

CC 


SDWAPGFX 

D9 

02 

SDNAINC1 

72 


SDWAMCHD 

D5 


SDWAPGIO 

E8 

01 

SDWAINC2 

82 


SDWAMCHI 

D4 


SDWAPGM1 

69 

01 

SDWAINSF 

D5 

04 

SDWAMCHK 

E8 

80 

SDWAPGM2 

79 

01 

SDWAINTA 

A 


SDWAMCHS 

D4 


SDWAPLEN 

FO 

08 

SDWAINTC 

D9 

40 

SDWAMCIV 

EB 

02 

SDWAPMKA 

C 


SDWAINTP 

12 


SDWAMCKA 

9 

04 

SDWAPMKP 

14 


SDWAINTI 

6A 


SDWAMCKP 

11 

04 

SDWAPRIM 

17A 


SDWAINT2 

7A 


SDWAMCK1 

69 

04 

SDWAPSTI 

FC 

10 

SDWAINVP 

D4 

10 

SDWAMCK2 

79 

04 

SDWAPSWU 

D5 

20 

SDWAIO 

145 

80 

SDWAMDAT 

1C 


SDWAPTRS 

0 


SDWAIOA 

8 

FE 

SDWAMLEN 

FO 

02E0 

SDWAQQS 

144 

02 

SDWAIOBR 

64 


SDWAMLVL 

1C 


SDWARA 

190 



SDWA 

82 MVS/370 Debug Hdbk Vol 5 


SDWA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 





Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


NAME 

HEX 

OFFSET 

HEX 

VALUE 

NAME 

HEX 

OFFSET 

HEX 

VALUE 

NAME 

HEX 

OFFSET 

HEX 

VALUE 

SDWARBAD 

58 


SDWASKIP 

EA 

04 

SDHAS1 

6A 

80 

SDWARCDE 

FC 


SDHASKYF 

D5 

80 

SDWAS2 

7A 

80 

SDHARCDF 

D4 

40 

SDWASLEN 

FO 

03F0 

SDHATADB 

FF 

08 

SDWARCRD 

FD 

80 

SDNASLST 

141 

02 

SDWATALW 

11C 


SDNARC1 

0 


SDHASNPA 

140 


SDWATDLW 

118 


SDWARECA 

F4 


SDHASPER 

D9 

20 

SDHATDNB 

FF 

10 

SDWARECP 

124 


SDWASPID 

C8 


SDHATERR 

D5 

01 

SDWAREGU 

D5 

40 

SDWASPIN 

FD 

20 

SDWATEXC 

E8 

02 

SDWAREND 

FO 


SDHASPVA 

9 

01 

SDHATIME 

EO 


SDWAREQ 

4 

80 

SDWASPVP 

11 

01 

SDHATJPA 

146 

08 

SDWARERR 

FD 

10 

SDWASQA 

144 

40 

SDHATLEN 

FO 

03D0 

SDWARETY 

FC 

04 

SDWASRBM 

E9 

01 

SDHATLPA 

146 

10 

SDWAREXN 

134 


SDWASRSV 

88 


SDHATNCB 

FF 

20 

SDWARFSA 

DC 


SDWASRVL 

D4 

80 

SDWATNLW 

114 


SDWARKEY 

E8 

20 

SDWASRVP 

4 


SDWATOl 

14C 


SDWARLEN 

FO 

FO 

SDHASROO 

88 


SDWAT02 

154 


SDWARPIV 

EB 

04 

SDWASR01 

8C 


SDHAT03 

15C 


SDWARRL 

30 


SDHASR02 

90 


SDWAT04 

164 


SDWARRSV 

293 


SDHASR03 

94 


SDWATRAN 

74 


SDWARSRC 

D4 

08 

SDWASR04 

98 


SDWATRM1 

68 

04 

SDNARSRF 

D4 

04 

SDWASR05 

9C 


SDHATRM2 

78 

04 

SDNARSR1 

D8 


SDWASR06 

AO 


SDHATRN2 

84 


SDWARSR2 

D9 


SDHASR07 

A4 


SDWATSVL 

D4 

20 

SDWARTYA 

FO 


SDHASR08 

A8 


SDWATYP1 

E9 

08 

SDWASALL 

FE 

04 

SDWASR09 

AC 


SDWAUPRG 

FD 

08 

SDWASC 

5 


SDWASR10 

BO 


SDWAURAL 

193 


SOHASCK 

D5 

10 

SDWASR11 

B4 


SDWAUSPL 

146 

02 

SDWASCKB 

CC 


SDWASR12 

B8 


SDHAVEQR 

D9 

01 

SDNASCKE 

DO 


SDHASR13 

BC 


SDWAVERF 

16C 


SDWASCND 

176 


SDHASR14 

CO 


SDWAVERI 

16C 


SDWASDAT 

144 


SDWASR15 

C4 


SDHAVID 

16E 


SDWASDAO 

144 


SDWASTAE 

EB 

20 

SDWAVRA 

194 


SDWASDA1 

145 


SDWASTAF 

EA 

80 

SDHAVRAL 

190 


SDMASEND 

40 


SDWASTAI 

EA 

40 

SDWAVRAM 

192 

20 

SDWASEQt 

122 


SDWASTCC 

4 

10 

SDWAVS3 

16E 

01 

SDWASERP 

FD 

02 

SDWASTCK 

CC 


SDHAHATA 

9 

02 

SDWASERV 

0 


SDWASTEP 

4 

40 

SDWAWATP 

11 

02 

SDWASGA 

C 

01 

SDWASTRM 

E8 

01 

SDHAHAT1 

69 

02 

SDWASGN1 

6A 

01 

SDWASVCD 

E8 

10 

SDHAHAT2 

79 

02 

SDWASGN2 

7A 

01 

SDHASVCE 

E8 

04 

SDHAXM 

174 


SDHASGP 

14 

01 

SDHASHA 

144 

10 

SDWAXPAD 

170 


SDWA 








SDWA 

LC28-1389-0 

(c) Copyright IBM 

Corp. 1980, 

1985 


Data Area Descriptions 83 




Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SGIi 


Common Name : RSM Segment Table Entry 

Macro 10 : IHAS6TE 

DSECT Name : SGTSTE 

Created by s IEAVITAS (RSM supervisor) 

Subpool and Key : 255 and key 0 

Size : 4 bytes 

Pointed to by : None 
Serialization : SALLOC lock 

Function 5 Contains real address of page table origin. 
■QEESE.TS_HEI_ LENGTH NAME _ DESCRIPTION 


0 

(0) STRUCTURE 

m 

SGTE 

, STEPTR 

0 

(0) STRUCTURE 

■ 

SGTSTE 

, STEPTR 

0 

(0) BITSTRING 

i 

SGTLK 

LENGTH AND KEY BYTE 


1111 .... 


SGTPTL 

"X'F0'*»- PAGE TABLE LENGTH 


.... 1111 


SGTKEY 

"X'OF'i.- SEGMENT PROTECTION KEY 

1 

(1) ADDRESS 

3 

SGTPTO 

FIRST 21 BITS CONCATENATED WITH THREE 
ZEROS ON THE LOW ORDER END FORM A 24 BIT 
REAL ADDRESS OF THE PAGE TABLE ORIGIN 

1 

Cl) BITSTRING 

2 

SGTORG 

FIRST 16 BITS OF THE ADDRESS OF THE PAGE 
TABLE ORIGIN 

3 

(3) BITSTRING 

1 

SGTBYTE 

NEXT 5 BITS OF ADDRESS AND FLAG BITS 


• ••• • 1 • « 


SGTREAD 

"X'04'"- WHEN 1, THIS SEGMENT IS 
READ-ONLY AND ANY ATTEMPT TO WRITE INTO 
THE SEGMENT WILL RESULT IN A PROTECTION 
EXCEPTION 


t * • • • • X • 


SGTCB 

"X'02 ,n - WHEN 1, THIS SEGMENT IS PART OF 
THE COMMON AREA 


1 • « • * 1*1 


SGTPAM 

"X'01"*- PAGE TABLE AVAILABILITY FLAG 
WHEN 1 = SEGMENT IS INVALID 

4 

(4) CHARACTER 

1 

SGTEND 

END OF SEGMENT TABLE ENTRY 




SGTLEN 

"SGTEND-SGTSTE"- LENGTH OF SEGMENT TABLE 
ENTRY 

SGTE 




SGTE 

84 

MVS/370 Debug Hdbk 

Vol 

5 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 




Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


Common Name : Step Input/Output Table 
Macro ID : IEFASIOT 
DSECT Name : INDMSIOT 
Created by : IEFVDA 

Subpool and Key : 236 or 237 and key 1 

Size i 174 bytes 

Pointed to by : SCTFSIOT field of the SCT data area 
SCTPSIOT field of the SIOT data area 
Serialization : None 

Function : Contains information per data definition card. 
OFFSETS TYPE _ LENGTH NAME _ DESCRIPTION 


0 

(0) FLOATING 

8 

INDMSIOT 

STEP 1-0 TABLE 

0 

(0) CHARACTER 

3 

SIOTDSKA 

DISK ADDRESS OF SIOT 

3 

(3) CHARACTER 

1 

SIOTTYPE 

TABLE ID OF SIOT =3 


•••• tall 


SIOTID 

i»3» 


.Ill 


DSNID 

it7« 

4 

(4) CHARACTER 

8 

SCTDDNAM 

THE DDNAME FROM THE DD CARD 

12 

(C) CHARACTER 

8 

SIOTDEST 

USER ID ENABLING SYSOUT TO BE ROUTED VIA 
JCL 

20 

(14) CHARACTER 

2 

SCTUSADD 

INTERNAL NUMBER OF THE DD STATEMENT FOT 
WHICH UNIT AFFINITY IS SPECIFIED IN THIS 
DD STATEMENT 


...1 . 1 .. 


SIOTUNAF 

"SCTUSADD" 

22 

(16) CHARACTER 

2 

SIODSNTE 

OFFSET INTO DSNT FOR DCB REFERENCE TO A 
DATA SET 

24 

(18) CHARACTER 

2 

SIOTVLSP 

VOL SEP DD NO. 

26 

(1A) CHARACTER 

2 

SIOTAFID 

AFFINITY ASSOCIATION ID WITH MUL¬ 
TI-UNIT/GENERIC REQUEST 


SIOT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SIOT 

Data Area Descriptions 85 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


28 

(1C) CHARACTER 

4 

SCTPSIOT 

DISK ADDR OF NEXT SIOT IN CHAIN 

32 

(20) CHARACTER 

4 

SCTPJFCB 

DISK ADDRESS OF JFCB 

36 

(24) CHARACTER 

3 

SIOTVRSB 

DISK ADDRESS OF SIOT FOR VOLREF OR SUB¬ 
ALLOCATE 

39 

(27) CHARACTER 

1 

SIOTOTUN 

TOTAL NUMBER OF UNITS USED FOR THIS SIOT 

40 

(28) CHARACTER 

2 

SIOTREFN 

DD NUMBER OF INTRA STEP 

42 

(2A) CHARACTER 

1 

SIOPSCNT 

PUBLIC STORAGE COUNT VOL REF 

43 

(2B) CHARACTER 

1 

SI0TBYT1 

MVM INDICATORS 


•••• 


SIOTOCKP 

"128" BIT-0 DATA SET OPEN AT LAST CHECK¬ 
POINT 


•lit •••• 


SIOTHOLD 

"64" BIT-1 SYSOUT DATA SET TO BE PLACED 
ON HOLD QUEUE. 


till 


SIOVAMDS 

"32" BIT-2 VIO DATA SET 


• ••X • • • • 


SIODUNAL 

"16" BIT-3 DATA SET HAS BEEN DYNAM¬ 
ICALLY UNALLOCATED 


• ••• 1 • i i 


SIOTDADR 

"8" BIT-4 DADSM IS REQUIRED 


• i 1 • i 


SIODADSM 

"4" BIT-5 DADSM WAS SUCCESSFUL 


• ••• • • 1 i 


SIOTALCD 

"2" BIT-6 THIS SIOT IS COMPLETELY ALLO¬ 
CATED 


• • • • • • • X 


SIOTDDNT 

"1" BIT-7 IN TSO, COMM’D PROCESSOR MUST 
PUT DDNAME IN DDNT 

44 

(20 CHARACTER 

2 

SCTDDINO 

INTERNAL NUMBER OF THE DD STATEMENT 

46 

(2E) CHARACTER 

1 

SI0TBYT3 

ALLOCATION INDICATOR BYTE 


1 . 


SIOALIAS 

"128" ALIAS EXISTS FOR THIS DS 


• X • • •••• 


SIOCDEVT 

"64" DEVICE TYPE FOR THIS DS OBTAINED 
FROM CATALOG 


• • 1 • i • • • 


SI0TJES3 

"32" DEVICES FOR THIS ALLOCATION 

SELECTED BY JES3 


• ••1 •••• 


S34000FF 

"16" INITALIZE S3400DSP TO OFF 


• ••• 1 • « • 


SIOTDSID 

"8" ON FOR DSID KEYWORD 


• ••• • X • • 


SIOTMSS 

"4" ALL UNITS ELIGIBLE TO THIS REQUEST 
ARE MSS DEVICES 


• ••• • • X • 


SIOTMXD 

"2" UNITS ELIGIBLE ARE A MIX OF MSS AND 
NON-MSS DEVICES BIT 7 NOT USED 

47 

(2F) CHARACTER 

1 

SIOTTSTC 

INDICATORS FOR TIME SHARING AND TCAM 
20001 


SIOT 

86 


MVS/370 Debug Hdbk Vol 5 


SIOT 

LC28-1389-0 <c> Copyright IBM Corp. 1980, 1985 





Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ 

1. SIOTINFC 


• l . 

SIOTTERM 

•••X • • • • 

SIOTSSGP 

1 • • • 

SIOTSSMG 

• • • • lit* 

SIOTTRKM 

• • * • • • 1 • 

SIOTDSNM 

.1 

SIOTQNAM 


48 

(30) 

CHARACTER 

1 

SCTSPOOL 

49 

(31) 

CHARACTER 

1 

SCTVOLCT 

50 

(32) 

CHARACTER 

2 

SIOTGIID 


DESCRIPTION 

"128" SIOT INF CODE INDIC 
"64" BIT 1 TSO TERMINAL BIT DD TERM=TS 
PARAM. 20001 SET BY IEFVDA 20001 BIT 2 
NOT USED 

"16" GROUP SUBSYSTEM REQUEST(SUBSYS) 

"8" SUBSYSTEM ERROR MESSAGE INDICATOR 
"4" XB609 SETS FOR AB427 WHEN DYNAMIC 
"2" SYSOUT DSDR FOUND ON CHECKPOINT DS 
"1" BIT 7 FOR TCAM USE =1 IF QNAME= ON 
DD STATE.20002 SET BY IEFVDA,TESTED BY 
ALLOCATION 20002 

INTERNAL NO. OF POOL DD 
NUMBER OF VOLUMES FOR THIS DATASET 
GROUP INTERSECTION ID FOR GENERIC ALLO¬ 
CATION 


52 

(34) CHARACTER 

1 

SIOTBYTO 


X i • • • • • • 


SIOTSSDS 


• X • * •••• 


SIOTDYAL 


••X* •••• 


SIOTFUDA 


•••X • • • • 


SPVTAMSG 


• • • • 1 • • • 


SIOTGIGN 


• • « • « 1 • • 


SIOTNOPV 


• • • • •«1 • 


SIOTPUPV 


« • • • • • • 1 


SIOTRTRY 

53 

(35) CHARACTER 

1 

SCTNMBUT 

54 

(36) CHARACTER 

1 

SIOTVLCT 

55 

(37) CHARACTER 

1 

SCTSDISP 


1 • • • «••• 


SIOTRETN 


• 1** • • •• 


S3400DSP 


• •la •••• 


PRIVATE 


FOR EXTENDED ALLOC 

"128" DATA SET WILL BE PROCESSED BY A 
SUBSYSTEM 

"64" DATA SET DYNAMICALLY ALLOCATED 
"32" A MIXED DEVICE TYPE SPECIFIED AFF 
OR DEFER 

"16" PVT ASSUMED MESSAGE REQUIRED 
"8" IGNORE PROCESSING SIOT FOR THIS 
GENERIC 

"4" USE ATTRIBUTE OF UCB HAS BEEN MADE 
PRIVATE 

"2" USE ATT. OF UCB CHANGED FROM PUB TO 
PRIVATE 

"1" THIS DATA SET REQUIRES RETRY IN 
ALLOCATION 

THE NUMBER OF UNITS FOR THE DATA SET 
VALUE OF SPECIFIED VOL COUNTf = 

JFCBVLCT) 

SCHEDULER DISPOSITION OF THE DATA SET 
CAT END OF STEP OR JOB) 

"128" RETAIN BIT 

"64" FOR DISP. PROCESSING OF DS ON ASPEN 
DEVICE 

"32" BIT 2 PRIVATE VOLUME 


SZOT 

LC28-1389-0 Cc) Copyright IBM Co. 1980, 1985 


SZOT 

Data Area Descriptions 87 







Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _DESCRIPTION 


PASS 

EQU 

16 

BIT 

3 - PASS THE DATA SET 

KEEP 

EQU 

8 

BIT 

4 - KEEP THE DATA SET 

DELETE 

EQU 

4 

BIT 

5 - DELETE DATA SET 

CATLG 

SET 

EQU 

2 

BIT 

6 - CATALOG THE DATA 

UNCATLG 

DATA 

EQU 

SET 

1 

BIT 

7 - UNCATALOG THE 


56 (38) CHARACTER 1 SCTSBYT1 INDICATOR BYTE NUMBER 1 

1. SCTDUMMY "128" BIT 0 DUMMY DATA SET 

.1. SCTSYSIN "64" BIT 1 SYSIN DATA SET 

..1. SIOTCCAT "32" BLANK DD NAME CONCATENATION 

...1 _ SIOTGDSN "16" GENERATED DATA SET NAME 

_ 1... SIOTQDSN "8" QUALIFIED DATA SET IS SPECIFIED 


PARALLEL MOUNT INDICATOR - BIT 5 


.1. SCTUNAFF "2" BIT 6 UNIT AFFINITY 

.1 SIOTJSCT n l n SIOT IS ASSOCIATED HITH A JOBCAT OR 

STEPCAT 

57 (39) CHARACTER 1 SCTSBYT2 INDICATOR BYTE NUMBER 2 

1. SIOCLUNL "128" CLOSE SHOULD DYNAMICALLY UNALLO¬ 

CATE THIS DS 

.1. SIOTCATL "64" BIT 1- DATA SET IS A CATALOG 

..1. SCTVOLAF "32" BIT 2 VOLUME AFFINITY 

...1 _ SCTJOBLB "16" BIT 3 JOBLIB DD STMNT 

_ 1... SCTUNLBD "8" BIT 4 UNLABELED 

.1.. SCTLABEL "4" BIT 5 NONSTANDARD LABEL 

.1. SCTDEFER "2" BIT 6 DEFER MOUNTING 

.1 SCTRECVD "1" BIT 7 RECEIVED DATA SET 

58 (3A) CHARACTER 1 SCTSBYT3 INDICATOR BYTE NUMBER 3 

1. SCTDSNRF "128" BIT 0 VOLUME REFERENCE DSNAME PRE¬ 

SENT 

.1. SCTSYSNE "64" BIT 1 SYSIN EXPECTED (PROCEDURES 


SIOT 

88 


MVS/370 Debug Hdbk Vol 5 


SIOT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 












Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 

ONLY) 19874 



••X* •••* 


SCTALCHK 

"32" THIS SIOT ALLOCATED AT LAST CHECK¬ 
POINT 


• • • 1 • • • • 


SCTVREF 

"16" BIT-3 VOLUME REFERENCE IN STEP 

SYSOUT 

EQU 8 

BIT 4 

SYSOUT SPECIFIED AADA 

NEW 

EQU 4 



BIT 5 - NEW DATA SET 

MOD 

EQU 2 



BIT 6 - MODIFIED DATA SET 

OLD 

EQU 1 



BIT 7 - OLD DATA SET 

59 

C3B) CHARACTER 

1 

SCTSBYT4 

INDICATOR BYTE 4 


1 . 


SCTSGDGS 

"128" BIT 0 SET BY R/0 TO INDICATE GDG 
SINGLE 


.1. 


SIOTGDGA 

"64" BIT 1 THIS IS A GENERATED SIOT 


••X* •••• 


SIOTAFF 

"32" BIT 2 SIOT AFFINITY INDICATOR 


• • • X • • « • 


SIOTASCI 

"16" BIT 3 USASCII TAPE LABEL. 19200 SET 
BY IEFVDA,TESTED BY IEFWAOOO 19200 


• ••• 1 • • • 


SIOTSTEP 

"8" BIT 4 STEP PROCESSED 


• • • • • 1 • • 


SIOTVAFF 

"4" BIT 5 INTRA-STEP VOLUME AFFINITY 


• • • • • •X • 


SIOTIPDI 

"2" BIT 6 DATA SET IS IN PDI 


• • • • • • • X 


SIOTOMN 

"1" BIT 7 1 = OLD OR MODIFIED DATA SET 0 
* NEW DATA SET 19874 

60 

(30 CHARACTER 

8 

SCTUTYPE 

UNIT TYPE 

60 

(30 CHARACTER 

4 

SIOTDEVT 

DEVICE TYPE 

60 

(30 CHARACTER 

1 

SI0UBYT1 


61 

(3D) CHARACTER 

1 

SI0UBYT2 


62 

(3E) CHARACTER 

1 

SI0UBYT3 

DEVICE CLASS 


1 •«• • • • • 


SI03TAPE 

"128" BIT 0 TAPE DEVICE 


• X • • « • • • 


SI03C0MM 

"64" BIT 1 COMMUNICATIONS DEVICE 


• •la •••• 


SI03DACC 

"32" BIT 2 DIRECT ACCESS DEVICE 


• ••X •••• 


SI03DISP 

"16" BIT 3 GRAPHICS DEVICE 


• ••• X • • • 


SI03UREC 

"8" BIT 4 UNIT RECORD DEVICE 

63 

(3F) CHARACTER 

1 

SI0UBYT4 


64 

(40) CHARACTER 

1 

SIOUCNVT 

IF = X'FF* SIOUCBAD IS AN SVA IF * X'OO' 


SXOT 

LC28-1389-0 Cc) Copyright IBM Corp. 1980, 1985 


SXOT 

Data Area Descriptions 89 










Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS_TYPE_ LENGTH NAME _ DESCRIPTION 







UNITNAME CONVERSION HAS BEEN DONE 

65 

(41) 

CHARACTER 

3 

SIOUCBAD 

UCB ADDRESS OR SVA 

68 

(44) 

CHARACTER 

8 

SCTOUTNM 

THE SYSTEM OUTPUT PROGRAM NAME 

76 

(40 

CHARACTER 

4 

SCTOUTNO 

THE FORM NUMBER OF THE CARD OR PAPER 
STOCK TO BE USED WHEN THIS DATA SET IS 
PUNCHED OR PRINTED 

80 

(50) 

CHARACTER 

1 

SCTOUTPN 

THE SYSTEM OUTPUT CLASS NAME 

81 

(51) 

CHARACTER 

1 

SI0TBYT4 



1.. 

• • • • • 


SIOTPROT 

"128" PROTECT SPECIFIED ON DD 


.1. 

• * • « » 


SIOTRACD 

"64" PROTECT OK IF ALLOC TO DASD 


. .1 

• • • « • 


SIOTRACT 

"32" PROTECT OK IF ALLOC TO TAPE 

82 

(52) 

CHARACTER 

1 

SIOTEDLG 

SUBPOOL NUMBER FOR EDL 

83 

(53) 

CHARACTER 

1 


RESERVED 

84 

(54) 

CHARACTER 

4 

SIOTSWB 

SCHEDULER WORK BLOCK(SWB) STRUCTURE 
POINTER 

88 

(58) 

CHARACTER 

4 

SIOTNDSB 

TTR OF NEXT DSB ALSO APPLI- CABLE ONLY 

IF SYSOUT BIT IS SET 


CONDITIONAL DISPOSITION BITS 0-1 
RESERVED 

"32" BIT 2 JOB CAT SWITCH USED ONLY BY 
INTERPRETER WHEN READING IN COPIES OF 
CONCATENATED JOBCAT SIOTS 


SIOTNPRV EQU 

16 

BIT 

3 THIS BIT IS SET AT RESTART TIME TO AACA 

INDICATE 

THAT THIS DD IS 

NON-PRIVATE AACA 

EVEN THOUGH 

IT 

MAY NOW APPEAR TO BE PRIVATE AACA 

KEEP EQU 

8 


BIT 4 - KEEP DATA SET IF ABEND 

DELETE EQU 

4 


3IT 5 - DELETE DATA SET IF ABEND 

CATLG EQU 

2 


BIT 6 - CATALOG DATA SET IF 

ABNORNAL TERMINATION 


UNCATLG EQU 

1 


BIT 7 - UNCATALOG DATA SET IF 

ABNORMAL 

TERMINATION 



92 ( 50 CHARACTER 


1 SIOTALTD 
SIOJCATS 


SIOT 

90 


MVS/370 Debug Hdbk Vol 5 


SIOT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


93 

(5D) CHARACTER 

3 

SIOTSSWA 

SVA OF SSWA 

96 

(60) CHARACTER 

1 

SIOTOUTC 

NUMBER OF SYSOUT COPIES TO BE PRINTED 

97 

(61) CHARACTER 

1 

SI0TBYT5 

INDICATORS 


1 • • • • • • • 


SIOTDEFC 

"128" BIT 0 INDICATE DEFAULT COPIES WAS 
SET 


• 1 • • •••« 


SIOTDCLA 

"64" BIT 1 INDICATE DEFAULT SYSOUT WAS 
SET 

98 

(62) CHARACTER 

1 


RESERVED 

99 

(63) CHARACTER 

4 

SIOTOPUC 

RESERVED 21774 

103 

(67) CHARACTER 

1 

SI0TBYT2 

MVM INDICATOR BYTE 


1 • • • • • • • 


SIOTDMND 

"128" INDICATES SPECIFIC UNIT REQ MADE 


lit! •••• 


SIOTDSPD 

"64" DISP FOR THIS DATA SET HAS BEEN 
PROCESSED 


• •l* «••• 


SI0T6ALL 

"32" SIOT IS PART OF GDG ALL REQUEST 


• ••l • • • * 


SIOTCALC 

"16" DATA SET CATLGD WHEN ALLOC f D 


• ••• l . . . 


SIOTCNEW 

"8" ORIG ALLOC'D STAT OF NEW CONVRTD 


.1. • 


SI0TCV0L 

"4" SIOT REPRESENTS AN OS CVOL 

H 

2 

RESERVED 


9 

1 

RESERVED 



104 

(68) 

CHARACTER 

4 

SIOTSSNM 

SUBSYSTEM NAME WHICH WILL 
D.S. 

PROCESS THIS 

108 

(60 

CHARACTER 

12 


RESERVED 


120 

(78) 

CHARACTER 

2 

SIOTSSIC 

SIOT INFORMATION REASON CODE 

122 

(7A) 

CHARACTER 

8 

SCTANAME 

8NAME FROM DSNAME= , DEDIC. 
FILES AACA 

AACA WORK 

130 

(82) 

CHARACTER 

2 

SIOTRSNC 

ERROR CODE 


132 

(84) 

CHARACTER 

4 

SIOTEDLS 

SIZE OF EDL 


136 

(88) 

CHARACTER 

4 

SIOTEDLP 

EDL POINTER 


140 

(80 

CHARACTER 

4 

SVOLUNAD 

VOLUNIT TABLE ENTRIES 



SIOT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SIOT 

Data Area Descriptions 91 










Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


144 

(90) CHARACTER 

4 

SIOTPSVA 

SVA OF PASSING SIOT 



148 

(94) CHARACTER 

4 

SIOTETIO 

ETIOT ENTRY 



152 

(98) CHARACTER 

4 

SIOTNPTR 

VIRTUAL ADDRESS OF NEXT SIOT 



156 

(90 CHARACTER 

4 

SJFCBPTR 

VIRTUAL ADDRESS OF JFCB 



160 

(AO) CHARACTER 

4 

SIOTJFX 

VIRTUAL ADDRESS OF JFCBX 



164 

(A4) CHARACTER 

4 

SIOTVMVP 

VOLUME MNT AND VERIFY REQUEST 



168 

(A8) CHARACTER 

2 

SVOLUNNO 

COUNT OF VOLUNIT ENTRIES 



170 

(AA) CHARACTER 

2 

SIOVDSNT 

OFFSET INTO DSNT FOR VOL REF TO 

1 A DATA 





SET NAME 



172 

(AC) CHARACTER 

1 

SIOVDSNL 

LENGTH OF DATA SET NAME OF VOL 
DATA SET ANME 

REF 

TO A 

173 

(AD) CHARACTER 

1 

SIODDSNL 

LENGTH OF DATA SET NAME OF DCB 
DATA SET NAME 

REF 

TO A 

174 

(AE) CHARACTER 

6 


TO MAKE 180(SI0T) 




1.1. 111. 


SIOTLGTH 

"174" LENGTH OF SIOT 



180 

(B4) CHARACTER 

4 


HDR(INTERPRETER ONLY) 




...1 11.. 


JFCBID 

"28" 




SZOT 

92 


MVS/370 Debug Hdbk Vol 5 


SIOT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 










Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


CROSS REFERENCE 


NAME 

HEX 

OFFSET 

HEX 

VALUE 

NAME 

HEX 

OFFSET 

HEX 

VALUE 

NAME 

HEX HEX 

OFFSET VALUE 

DSNID 

3 

07 

SIODDSNL 

AD 


SIOTGDSN 

38 

10 

INDMSIOT 

0 

00 

SIODSNTE 

16 


SIOTGIGN 

34 

08 

JFCBID 

B4 

1C 

SIODUNAL 

2B 

10 

SIOTGIID 

32 


PRIVATE 

37 

20 

SIOJCATS 

5C 

20 

SIOTHOLD 

2B 

40 

SCTALCHK 

3A 

20 

SIOPSCNT 

2A 


SIOTID 

3 

03 

SCTANAME 

7A 


SIOTAFF 

3B 

20 

SIOTINFC 

2F 

80 

SCTDDINO 

2C 


SIOTAFID 

1A 


SIOTIPDI 

3B 

02 

SCTDDNAM 

4 


SIOTALCD 

2B 

02 

SI0TJES3 

2E 

20 

SCTDEFER 

39 

02 

SIOTALTD 

5C 


SIOTJFX 

AO 


SCTDSNRF 

3A 

80 

SIOTASCI 

3B 

10 

SIOTJSCT 

38 

01 

SCTDUMMY 

38 

80 

SIOTBYTO 

34 


SIOTLGTH 

AE 

AE 

SCTJOBLB 

39 

10 

SI0TBYT1 

2B 


SIOTMSS 

2E 

04 

SCTLABEl 

39 

04 

SI0TBYT2 

67 


SIOTMXD 

2E 

02 

SCTNMBUT 

35 


SI0TBYT3 

2E 


SIOTNDSB 

58 


SCTOUTNM 

44 


SI0TBYT4 

51 


SIOTNOPV 

34 

04 

SCTOUTNO 

4C 


SI0TBYT5 

61 


SIOTNPTR 

98 


SCTOUTPN 

50 


SIOTCALC 

67 

10 

SIOTOCKP 

2B 

80 

SCTPJFCB 

20 


SIOTCATL 

39 

40 

SIOTOMN 

3B 

01 

SCTPSIOT 

1C 


SIOTCCAT 

38 

20 

SIOTOPUC 

63 


SCTRECVD 

39 

01 

SIOTCNEW 

67 

08 

SIOTOTUN 

27 


SCTSBYT1 

38 


SIOTCVOL 

67 

04 

SIOTOUTC 

60 


SCTSBYT2 

39 


SIOTDADR 

2B 

08 

SIOTPROT 

51 

80 

SCTSBYT3 

3A 


SIOTDCLA 

61 

40 

SIOTPSVA 

90 


SCTSBYT4 

3B 


SIOTDDNT 

2B 

01 

SIOTPUPV 

34 

02 

SCTSDISP 

37 


SIOTDEFC 

61 

80 

SIOTQDSN 

38 

08 

SCTSGDGS 

3B 

80 

SIOTDEST 

C 


SIOTQNAM 

2F 

01 

SCTSPOOL 

30 


SIOTDEVT 

3C 


SIOTRACD 

51 

40 

SCTSYSIN 

38 

40 

SIOTDMND 

67 

80 

SIOTRACT 

51 

20 

SCTSYSNE 

3A 

40 

SIOTDSID 

2E 

08 

SIOTREFN 

28 


SCTUNAFF 

38 

02 

SIOTDSKA 

0 


SIOTRETN 

37 

80 

SCTUNLBD 

39 

08 

SIOTDSNM 

2F 

02 

SIOTRSNC 

82 


SCTUSADD 

14 


SIOTDSPD 

67 

40 

SIOTRTRY 

34 

01 

SCTUTYPE 

3C 


SIOTDYAL 

34 

40 

SIOTSSDS 

34 

80 

SCTVOLAF 

39 

20 

SIOTEDLG 

52 


SIOTSSGP 

2F 

10 

SCTVOLCT 

31 


SIOTEDLP 

88 


SIOTSSIC 

78 


SCTVREF 

3A 

10 

SIOTEDLS 

84 


SIOTSSMG 

2F 

08 

SIOALIAS 

2E 

80 

SIOTETIO 

94 


SIOTSSNM 

68 


SIOCDEVT 

2E 

40 

SIOTFUDA 

34 

20 

SIOTSSNA 

5D 


SIOCLUNL 

39 

80 

SIOTGALL 

67 

20 

SIOTSTEP 

3B 

08 

SIODADSM 

2B 

04 

SIOTGDGA 

3B 

40 

SIOTSHB 

54 


SXOT 








SXOT 

LC28-1389-0 

(c) Copyright IBM 

Corp. 1980, 

1985 


Data Area Descriptions 

93 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


NAME 

HEX 

OFFSET 

HEX 

VALUE 

NAME 

HEX 

OFFSET 

HEX 

VALUE 

NAME 

HEX 

OFFSET 

HEX 

VALUE 

SIOTTERM 

2F 

40 

SI0UBYT1 

3C 


SI03DACC 

3E 

20 

SIOTTRKM 

2F 

04 

SI0UBYT2 

3D 


SI03DISP 

3E 

10 

SIOTTSTC 

2F 


SI0UBYT3 

3E 


SI03TAPE 

3E 

80 

SIOTTYPE 

3 


SI0UBYT4 

3F 


SI03UREC 

3E 

08 

SIOTUNAF 

14 

14 

SIOUCBAD 

41 


SJFCBPTR 

9C 


SIOTVAFF 

3B 

04 

SIOUCNVT 

40 


SPVTAMSG 

34 

10 

SIOTVLCT 

36 


SIOVAMDS 

2B 

20 

SVOLUNAD 

8C 


SIOTVLSP 

18 


SIOVDSNL 

AC 


SVOLUNNO 

A8 


SIOTVMVP 

A4 


SIOVDSNT 

AA 


S3400DSP 

37 

40 

SIOTVRSB 

24 


SI03C0MM 

3E 

40 

S34000FF 

2E 

10 


SZOT 

94 


MVS/370 Debug Hdbk Vol 5 


LC28-1389-0 (c) Copyright IBM Corp 


1980, 


SIOT 

1985 


Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SMC4 


Common Name J SMF (System Management Facilities) Control Area 

Macro ID : IEESMCA 

DSECT Name : SMCABASE 

Created by : IEEMB820 

Subpool and Key : 245 and key 0 

Size : 352 bytes 

Pointed to by : CVTSMCA field of the CVT data area 
Serialization : None 

Function : Contains information used by the System Management Facilities, 
SMF ECBs and other useful information. Provides an anchor for other SMF 
global control blocks. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


(0) 

STRUCTURE 

0 SMCABASE 


1... 

.... 

BITO 

"128" 

.1.. 

« • • • 

BIT1 

"64" 

..1. 

.... 

BIT2 

"32" 

.. .1 

• . . . 

BIT3 

"16" 

• • • • 

1... 

BIT4 

"8" 

• • • • 

.1. . 

BIT5 

n<jn 

, # « 

. .1. 

BIT6 

«»2" 

• • » * 

.. .1 

BIT7 

ttjn 

(0) 

BITSTRING 

1 SMCAOPT 

SMFDEFLT OPTIONS SELECTED AT INITIALIZA 
TION TIME. THE OPTIONS APPLY TO BACK¬ 
GROUND PROCESSING. SMCAFOPT (OFFSET 82) 
CONTAINS THE FOREGROUND OPTIONS. 

1... 

• # # « 

SMCA0PT1 

"BITO"- RESERVED 

.1.. 

• # • • 

SMCA0PT2 

"BIT1"- RESERVED 

. .1. 

• • • • 

SMCAEXT 

"BIT2"- RESERVED 

...1 

m m 9 * 

SMCADSA 

"BIT3"- DATA SET ACCOUNTING 

• • • • 

i... 

SMCAVOL 

"BIT4"- VOLUME ACCOUNTING 

, , , , 

.i.. 

SMCARS01 

"BIT5,,C*X ,n - RESERVED 

• • • ■ 

. .i. 

SMCATDS 

"BIT6"- TYPE 17 RECORDS MAINTAINED FOR 


TEMPORARY DATA SETS (REC(PERM) OR 


SMCA SMCA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 Data Area Descriptions 95 













Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 

REC(CALL)) 


.1 


SMCAFGND 

"BIT7 n - SMF FOREGROUND OPTIONS BIT. IF 
0, ABOVE BITS DESCRIBE BACKGROUND 
OPTIONS. IF 1, ABOVE BITS DESCRIBE 
FOREGROUND OPTIONS. 20011 

(1) BITSTRING 

i 

SMCAMISC 

MISCELLANEOUS INDICATORS 

1. 


SMCAUSER 

"BITO"- SMF RECORDING REQUESTED 

• 1 * » • * • • 


SMCAMAN 

"BIT1"- SYS1.MAN DATA SET IS/IS NOT PRE 
SENT BITS 0 AND 1 MEAN 00 NO SMF RECORD 
ING REQUESTED (MAN=NONE) 01 ONLY USER 
RECORDS TO BE RECORDED (MAN=USER) 10 
INVALID COMBINATION 11 SMF AND USER 
RECORDING REQUESTED (MAN=ALL) 

• • 1 « • • • • 


SMCAOPI 

"BIT2" RESERVED 

• ••1 •••• 


SMCAFIRT 

"BIT3"- SMF DATA SET TO BE OPENED 

.... 1 ... 


SMCAPSDP 

"BIT4"- PSEUDO-DUMP SWITCH (DEVICE 
SWITCHING ONLY) 

• ••• • 1 • • 


SMCADBSY 

"BIT5"- DUMP IS BUSY (SMF WRITER) 

• ••• • • 1 • 


SMCABSW 

"BIT6"- BUFFER SWITCH. IF 0, LEFT HALF 
OF BUFFER IN USE. IF 1, RIGHT HALF OF 
BUFFER IN USE. 

• ••• i * • 1 


SMCADUMP 

"BIT7"- DUMP BUSY 

(2) SIGNED 

2 

SMCATOFF 

OFFSET OF THE FIRST SMF TIOT ENTRY FROM 
THE BEGINNING OF THE MASTER SCHEDULER 
TIOT 


A 

(4) 

CHARACTER 

4 

SMCASMCA 

CONTROL BLOCK ID 

THE 

FOLLOWING FIELDS ARE 

SET 

UP BY IPL 

INITIALIZATION 


8 

(8) 

SIGNED 

4 

SMCAJWT 

JOB WAIT TIME LIMIT BIT 31 REPRESENTS 
1.048576 SECONDS 

12 

(C) 

ADDRESS 

4 

SMCAS842 

ADDRESS OF IEEMB842 

16 

(10) 

CHARACTER 

4 

SMCASID 

SYSTEM IDENTIFICATION (SID) 


SMCA 

96 


MVS/370 Debug Hdbk Vol 5 


SMCA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 











Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


20 

(14) ADDRESS 

4 

SMCABUFP 

ADDRESS OF THE SMF BUFFER 

24 

(18) CHARACTER 

8 

SMCAMTD 

MAXDORM TIME AND DATE 

32 

(20) ADDRESS 

4 

SMCAOPTB 

ADDR OF SMFOPTAB 

36 

(24) ADDRESS 

4 

SMCADFLT 

ADDR OF SMFDELFT 

40 

(28) SIGNED 

4 

SMCAARCT 

t OF RECORDS AT LAST ABEND 

44 

(20 SIGNED 

4 

SMCAABCT 

# OF BUFFERS AT LAST ABEND 

48 

(30) SIGNED 

4 

SMCASRCT 

# OF RECORDS AT LAST STATUS 

52 

(34) SIGNED 

4 

SMCASBCT 

t OF BUFFERS AT LAST STATUS 

56 

(38) ADDRESS 

4 

SMCAPFBA 

PAGE FIX BEGINNING ADDRESS 

60 

(30 ADDRESS 

4 

SMCAPFEA 

PAGE FIX END ADDRESS 

64 

(40) ADDRESS 

4 

SMCAECBA 

PAGE FIX ECB ADDRESS 

68 

(44) SIGNED 

2 

SMCABR14 

SMF RMTR (BR 14) 

70 

(46) CHARACTER 

2 


RESERVED 

MISCELLANEOUS POINTERS 

AND COMMUNICATION 

AREAS 


72 

(48) SIGNED 

4 

SMCAWAIT(2) 

THE ACCUMULATED WAIT TIME, EXPRESSED 

IN 26 USEC TIMER UNITS. FIRST WORD IS 
OVERFLOW FROM SECOND WORD. 

80 

(50) CHARACTER 

2 

SMCAENTY 

THESE SWITCHES GOVERN ENTRY CONDITIONS 
FOR DEVICE SWITCHING/ALLOCATION/ OPENIN( 
ROUTINES 

80 

(50) BITSTRING 

1 

SMCAENDI 

A COMMUNICATION FIELD 


1. 


SMCARS14 

"BITO,,C*X ,w - RESERVED 


.1. 


SMCARS15 

"BIT1,/C'X*"- RESERVED 


SMCA 

LC28-1389-0 Cc) Copyright IBM Corp. 1980 


1985 


SMC/ 

Data Area Descriptions 9i 

















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 



•«X» •••• 


SMCARS16 

"BIT2,,C'X ,n - RESERVED 


a a a 1 aaaa 


SMCARS17 

"BIT3,,C'X»"- RESERVED 


a a a a 1 a a • 


SMCARS18 

"BIT4,,C'X ,n - RESERVED 


a a a a a X a a 


SMCARS19 

"BIT5,/C'X*"- RESERVED 


aaaa aaXa 


SMCARS20 

"BIT6,,C'X ,n - RESERVED 


aaaa a a a 1 


SMCADSNF 

"BIT7"- IF ZERO, DATA SET (X OR Y) WAS 
FOUND. IF ONE, DATA SET (X OR Y) WAS NOT 
FOUND. 

81 

(51) CHARACTER 

1 

SMCAENOP 

ENTRY CODE THAT INDICATES WHICH LOAD OF 
SVC 83 HAS PASSED CONTROL TO CURRENT 

LOAD 

82 

(52) BITSTRING 

1 

SMCAFOPT 

SMF FOREGROUND OPTIONS. BIT SETTINGS ARE 
SAME AS SMCAOPT. 20011 

83 

(53) HEX 

1 

SMCAENAL 

RESERVED 

84 

(54) SIGNED 

4 

SMCAWRTP 

AN OPTIMUM BUFFER LOAD DISPLACEMENT FIG¬ 
URE. WHEN THE BUFFER IS LOADED TO OR 
BEYOND THIS POINT, IT WILL BE WRITTEN TO 
THE SMF DATA SET. 

88 

(58) SIGNED 

4 

SMCAOARY 

POINTER TO OLD RDS ARRAY 

92 

(50 SIGNED 

4 

SMCANARY 

POINTER TO NEW RDS ARRAY 

96 

(60) SIGNED 

4 

SMCASUBP 

POINTER TO SUBPARM CHAIN 

100 

(64) SIGNED 

4 

SMCABFMF 

MAXIMUM NUMBER OF FULL BUFFERS 

104 

(68) SIGNED 

4 

SMCANMSU 

NUMBER OF TIMES CALLER SUSPENDED TO WAIT 
FOR BUFFERS 

108 

(60 CHARACTER 

8 

SMCADSTM 

START TIME AND DATE AT WHICH NO DATA SET 
WAS AVAILABLE TO RECORD ON. APPEARS IN 
PACKED DECIMAL IN THE FORM OOYYDDDF WHE¬ 
RE 00 = ZEROS, YY = LAST 2 DIGITS OF THE 
YEAR, DDD = DAY OF THE YEAR AND F IS A 
SIGN. 


SMCA 

98 


MVS/370 Debug Hdbk Vol 5 


SMCA 

LC28-1389-0 Cc) Copyright IBM Corp. 1980, 1985 











Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


116 

C74) 

SIGNED 

4 

SMCADSCT 

THE NUMBER OF SMF RECORDS THAT HAVE BEEN 
OMITTED FROM THE SMF DATA SET DUE TO THE 
UNAVAILABILITY OF A DATA SET TO RECORD 

ON 

120 

(78) 

ADDRESS 

4 

SMCAASCB 

CURRENT TASK ASCB ADDRESS (0S/VS2) 

120 

(78) 

SIGNED 

2 

SMCAPOST 

RESERVED (0S/VS1) 

122 

(7A) 

CHARACTER 

2 

SMCATJID 

CURRENT TASK TJID (0S/VS1) 

124 

(70 

SIGNED 

4 

SMCAMACR 

ENTRY POINT TO MACRO RTN 

128 

(80) 

ADDRESS 

4 

SMCASAVE 

USER EXIT ADDRESS SAVE FIELD (0S/VS2) 

132 

(84) 

SIGNED 

4 

SMCATEXP 

TIME OF MOST RECENT EXPIRATION OF A 
TEN-MINUTE TIMER QUEUE ELEMENT (TQE) 

136 

(88) 

SIGNED 

4 

SMCAPGIN 

NUMBER OF PAGE-INS PERFORMED (0S/VS1) 

136 

(88) 

SIGNED 

4 

SMCADOMX 

MANX DOM WTO ID (0S/VS2) 

140 

(80 

SIGNED 

4 

SMCAPGOT 

NUMBER OF PAGE-OUTS PERFORMED (0S/VS1) 

140 

(80 

SIGNED 

4 

SMCADOMY 

MANY DOM WTO ID (0S/VS2) 

144 

(90) 

CHARACTER 

4 

SMCASJWT 

SAVE JWT AS ENTERED (HHMM) 

148 

(94) 

CHARACTER 

4 

SMCASMDM 

SAVE MAXDORM AS ENTERED (MMSS) 

152 

(98) 

CHARACTER 

6 

SMCASSTS 

SAVE STATUS AS ENTERED (HHMMSS) 

158 

(9E) 

CHARACTER 

2 


RESERVED 

160 

(AO) 

SIGNED 

4 

SMCARGNM 

NUMBER OF REGIONS MIGRATED 

164 

(A4) 

SIGNED 

4 

SMCAPGM 

NUMBER OF PAGES MIGRATED 

168 

(A8) 

ADDRESS 

4 

SMCAU83 

RESERVED 

168 

(A8) 

ADDRESS 

4 

SMCALOCK 

ADDRESS OF FIRST SSB ON SMCALOCK CHAIN 


SMCA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SMCA 

Data Area Descriptions 99 




















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


172 (AC) ADDRESS 4 SMCAWTCB ADDRESS OF SMF WRITER'S TCB USED BY 

XMPOST ERROR PROCESSOR (IEEMB827) 
(0S/VS2) 


176 (BO) ADDRESS 4 SMCASTCB ADDRESS OF SMF SVC CURRENTLY WAITING FOR 

WRITER USED BY XMPOST ERROR PPOCESSOR 
(IEEMB827) (0S/VS2) 


180 (B4) ADDRESS 4 SMCAACTP ADDRESS OF THE ACT (USED BY PARSE AND 

INPUT MERGE 


THE NEXT TWO FIELDS ARE THE SUBJECT OF COMPARE DOUBLE AND 
SWAP LOGIC THAT CONTROLS THE SCHEDULING OF THE SRB. THEY 
MUST BE ON A DOUBLE WORD BOUNDARY. DO NOT MOVE. 


184 

(B8) FLOATING 

8 

SMCACDS 

TARGET OF CDS TO CONTROL SRB SCHEDULE 
SCHEDULE 

184 

(B8) SIGNED 

4 

SMCANMFL 

NUMBER OF FULL BUFFERS 

188 

(BC) ADDRESS 

4 

SMCASSB 

POINTER TO SMF SUSPEND BLOCK 

192 

194 

(CO) SIGNED 
(C2) SIGNED 

2 

2 

SMCAMNBF 

SMCAMXBF 

MIN t OF BUFFERS 

MAX # OF BUFFERS 

196 

(C4) ADDRESS 

4 

SMCASTTT 

ADDRESS OF STATUS TIMER ELEMENT 

200 

(C8) ADDRESS 

4 

SMCAMAXT 

ADDRESS OF MAXDORM TIMER ELEMENT 

204 

(CC) ADDRESS 

4 

SMCADTB 

ADDRESS OF DUMP TIMER ELEMENT 

208 

(DO) SIGNED 

4 

SMCABITF 

FULL WORD OF BIT FLAGS 

208 

(DO) HEX 

1 • • * • • • • 

» 1 • « 

• • 1 • 

• •*1 

1 

SMCAPRMT 

SMCAIPLR 

SMCALIST 

SMCALDSN 

SMCAMXDM 

REPLACES OPI BIT 

"X^O'"- PROMPT(IPLR) OR PROMPT(ALL) 
n X « 40 »"- PROMPT(LIST) OR PROMPT(ALL) 
"X»20 ,n - DISPLAY DATASET STATUS 
"X'10"»- MAXDORM SPECIFIED? 

SMCA 

100 

MVS/370 Debug Hdbk 

Vol 

5 

SMCA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 














Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 



• ••• 1 * • • 


SMCASTUS 

"X'08*"- STATUS SPECIFIED? 


• ••• • 1 « • 


SMCARUN 

"X'04 ,w - WRITER SRB RUNNING 


• ••• • » 1 • 


SMCASKD 

"X»02»"- WRITER SRB HAS BEEN SCHEDULED 

209 

(Dl) HEX 

1 

SMCAFLGS 

WRITER STATUS FLAGS 


1. 

• X• • •••• 


SMCAINIT 

SMCARTRY 

"X'80'"- WRITER TASK INITIALIZED 
"X'40"*- RETRY IN PROGRESS 


• « 1 • •••• 


SMCADTLS 

"X»20 ,n - DATA LOST NO SPACE ON RECORD 
DATASETS 


• ••1 « • • • 


SMCASETP 

"X'10' n - SET SMF IN PROCESS 


• ••• 1 • • • 


SMCADISP 

"X'08"»- DISP SMF IN PROCESS 


• ••• • X • • 


SMCALL 

"X'04*"- LOCK HELD WHEN DISP LOCK OBTAIN 


• • • 1 • 


SMCALATE 

"X»02*"- NEXT ELEMENT LONGER THAN 1 SEC 


• • * • • • • 1 


SMCASETS 

"X'Ol'ii- SETSMF IN PROCESS 

210 

(D2) HEX 

1 

SMCAFLGR 

RECOVERY FOOTPRINTS 


X •»• • • • • 


SMCATERM 

"X»80"*- SMF TERMINATED 


* 1 * • •••• 


SMCAPGFX 

W X'40 ,W - PAGEFIX ISSUED 


• •1* • • * « 


SMCASRBF 

"X»20'"- WRITER SRB ABENDED AND ISSUED 
SDUMP 


•••X •••• 


SMCAPSUS 

"X'lO'ii- PREVENT suspend processing whi¬ 
le HANDLING I/O ERROR 


«••• 1 • • • 


SMCAU29 

"X’08*"- IEFU29 EXIT CALLED 


• • X «* 


SMCAN0ST 

"X'04"*- N0 M oRE SETS ALLOWED 


«••• 0 • 1 • 


SMCAPREV 

"X'02'"- PREVIOUS ABEND IN EASI INTERVAL 


■ • • • • • « 1 


SMCANMRE 

"X'Ol*"- NO MORE EASI INTERVAL PROC 

211 

(D3) HEX 

1 

SMCARCUR 

RECOVERY RECURSION BITS 


1 • • • •••• 


SMCAMXDR 

"X'80‘"- PREVENT MAXDORM RECURSION 


• 1 • • •••• 


SMCASTTR 

"X'40'"- PREVENT STATUS RECURSION 


• • 1 • • * • i 


SMCASUSR 

"X'20 ,w - PREVENT SUSPEND RECURSION 


• ••X • • • • 


SMCATIMR 

"X'lO"*- PREVENT TIMER RECURSON 


• ••• 1 • • • 


SMCASETR 

"X'08*"- PREVENT SET RECURSION 


lit* • 1 • • 


SMCASETC 

"X'04 ,n FOOTPRINTS FOR SET RECOVERY 

212 

(D4) SIGNED 

4 

SMCAECB0 

INITIALIZATION ECB BETWEEN MB822 AND 
MB829 

216 

(D8) ADDRESS 

4 

SMCASRB 

ADDR OF SMF WTR SRB 

220 

(DC) SIGNED 

4 

SMCAECB1 

MSG ECB 

224 

(E0) SIGNED 

4 

SMCAECB2 

DUMP CHECK ECB 


SMCA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SMCA 

Data Area Descriptions 101 












Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


228 

(E4) SIGNED 

4 

SMCAECB3 

END SWITCH ECB 

232 

(E8) SIGNED 

4 

SMCAECB4 

SET ECB 

236 

(EC) CHARACTER 

4 


RESERVED 

CONTROL AREA FOR RDS CHAIN - 

RECORDING DATASET BLOCKS 


240 

(F0) CHARACTER 

4 

SMCARDSH 

RDSH CHAIN HEADER ID 

244 

(F4) ADDRESS 

4 

SMCAFRDS 

FIRST RDS 

248 

(F8) ADDRESS 

4 

SMCALRDS 

LAST RDS 

252 

(FC) ADDRESS 

4 

SMCASVCR 

CURRENT RDS FOR SVC 83 IEEMB830 

256 

(100) ADDRESS 

4 

SMCASRBR 

CURRENT RDS FOR SRB IEEMB834 

CONTROL AREA FOR BQE CHAIN - 

BUFFER QUEUE 

ELEMENTS 


260 

(104) CHARACTER 

4 

SMCABQEH 

BQEH CHAIN HEADER ID 

264 

(108) ADDRESS 

4 

SMCAFBQE 

FIRST BQE 

268 

(10C) ADDRESS 

4 

SMCALBQE 

LAST BQE 

272 

(110) ADDRESS 

4 

SMCACBQE 

CURRENT BQE 

276 

(114) SIGNED 

4 

SMCABQGM 

BQE GETMAIN PARM 

276 

(114) HEX 

1 

SMCABQSP 

BQE SUBPOOL 

277 

(115) ADDRESS 

3 

SMCABQSZ 

BQE SIZE 

280 

(118) SIGNED 

4 

SMCACNBF 

CURRENT NUMBER OF BQES 


SMCA 

102 


MVS/370 Debug Hdbk Vol 5 


SMCA 

LC28-1389-0 <c) Copyright IBM Corp. 1980, 1985 





















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


284 

(11C) 

SIGNED 

4 

SMCABFTM 

TIME OF LAST BUFFER GETMAIN 

288 

(120) 

SIGNED 

4 

SMCABFLS 

NUMBER OF RCDS LOST DUE TO BUFFER SHORT¬ 
AGE 

292 

(124) 

ADDRESS 

4 

SMCAAS1R 

CHAIN OF RECORDS PRODUCED BY ADDRESS 
SPACE 1 THAT MOULD NOT FIT IN BUFFERS 

296 

(128) 

SIGNED 

4 

SMCABFHT 

BUFFERS HRITTEN 

300 

(120 

SIGNED 

4 

SMCARCWT 

RECORDS MRITTEN 

VARIABLES FOR SMF TIMER 

MODULE - IEEMB839 



304 

(130) 

ADDRESS 

4 

SMCATQE 

ADDRESS OF TQE 

308 

(134) 

ADDRESS 

4 

SMCAENQE 

ADDRESS OF ENQUE ENTRY POINT 

312 

(138) 

ADDRESS 

4 

SMCADEQE 

ADDRESS OF DEQUE ENTRY POINT 

316 

(130 

ADDRESS 

4 

SMCANSRB 

ADDRESS OF NEXT ELEMENT ON CHAIN 

320 

(140) 

CHARACTER 

8 

SMCAENDT 

TIME HHEN DIE INVOKED PLUS 1 SEC 

SELECTIVITY 

CONTROL AREA 





328 

(148) 

ADDRESS 

4 

SMCASSTP 

ADDRESS OF SMF SELECTIVITY TABLES 

332 

(140 

ADDRESS 

4 

SMCASYSP 

ADDR OF THE SYSTEM (DEFAULT) SST 

336 

(150) 

CHARACTER 

4 

SMCAITME 

IPL TIME (BINARY) 

340 

(154) 

CHARACTER 

4 

SMCAIDTE 

IPL DATE (YYDDDF) 


SMCA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SMCA 

Data Area Descriptions 103 




















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 

344 (158) ADDRESS 4 SMCASACT ADDR OF THE NEW ACT FOR SET 


348 (150 SIGNED 

350 (15E) SIGNED 


2 SMCANSST NUMBER OF SST ENTRIES 

2 SMCALSST LENGTH OF ONE SST ENTRY 

SMCAEND "X" 

SMCASIZE "SMCAEND-SMCABASE"- SIZE OF SMCA TABLE 


SMCA 

104 


MVS/370 Debug Hdbk Vol 5 


LC28-1389-0 (c) Copyright IBM Corp. 1980 


SMCA 

1985 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


CROSS REFERENCE 


NAME 

HEX 

OFFSET 

HEX 

VALUE 

NAME 

HEX 

OFFSET 

HEX 

VALUE 

NAME 

HEX 

OFFSET 

HEX 

VAMJE 

BITO 

0 

80 

SMCADTLS 

D1 

20 

SMCAMNBF 

CO 


BIT1 

0 

40 

SMCADUMP 

1 

01 

SMCAMTD 

18 


BIT2 

0 

20 

SMCAECBA 

40 


SMCAMXBF 

C2 


BIT3 

0 

10 

SMCAECBO 

D4 


SMCAMXDM 

DO 

10 

BIT4 

0 

08 

SMCAECB1 

DC 


SMCAMXDR 

D3 

80 

BIT5 

0 

04 

SMCAECB2 

EO 


SMCANARY 

5C 


BIT6 

0 

02 

SMCAECB3 

E4 


SMCANMFL 

B8 


BIT7 

0 

01 

SMCAECB4 

E8 


SMCANMRE 

D2 

01 

SMCAABCT 

2C 


SMCAENAL 

53 


SMCANMSU 

68 


SMCAACTP 

B4 


SMCAEND 

15E 

0160 

SMCANOST 

D2 

04 

SMCAARCT 

28 


SMCAENDI 

50 


SMCANSRB 

13C 


SMCAASCB 

78 


SMCAENDT 

140 


SMCANSST 

15C 


SMCAAS1R 

124 


SMCAENOP 

51 


SMCAOARY 

58 


SMCABASE 

0 


SMCAENQE 

134 


SMCAOPI 

1 

20 

SMCABFLS 

120 


SMCAENTY 

50 


SMCAOPT 

0 


SMCABFMF 

64 


SMCAEXT 

0 

20 

SMCAOPTB 

20 


SMCABFTM 

11C 


SMCAFBQE 

108 


SMCAOPT1 

0 

80 

SMCABFWT 

128 


SMCAFGND 

0 

01 

SMCA0PT2 

0 

40 

SMCABITF 

DO 


SMCAFIRT 

1 

10 

SMCAPFBA 

38 


SMCABQEH 

104 


SMCAFLGR 

D2 


SMCAPFEA 

3C 


SMCABQGM 

114 


SMCAFLGS 

D1 


SMCAPGFX 

D2 

40 

SMCABQSP 

114 


SMCAFOPT 

52 


SMCAPGIN 

88 


SMCABQSZ 

115 


SMCAFRDS 

F4 


SMCAPGM 

A4 


SMCABR14 

44 


SMCAIDTE 

154 


SMCAPGOT 

8C 


SMCABSW 

1 

02 

SMCAINIT 

D1 

80 

SMCAPOST 

78 


SMCABUFP 

14 


SMCAIPLR 

DO 

80 

SMCAPREV 

D2 

02 

SMCACBQE 

110 


SMCAITME 

150 


SMCAPRMT 

DO 


SMCACDS 

B8 


SMCAJWT 

8 


SMCAPSDP 

1 

08 

SMCACNBF 

118 


SMCALATE 

D1 

02 

SMCAPSUS 

D2 

10 

SMCADBSY 

1 

04 

SMCALBQE 

IOC 


SMCARCUR 

D3 


SMCADEQE 

138 


SMCALDSN 

DO 

20 

SMCARCWT 

12C 


SMCADFLT 

24 


SMCALIST 

DO 

40 

SMCARDSH 

FO 


SMCADISP 

D1 

08 

SMCALL 

D1 

04 

SMCARGNM 

AO 


SMCADOMX 

88 


SMCALOCK 

A8 


SMCARS01 

0 

04 

SMCADOMY 

8C 


SMCALRDS 

F8 


SMCARS14 

50 

80 

SMCADSA 

0 

10 

SMCALSST 

15E 


SMCARS15 

50 

40 

SMCADSCT 

74 


SMCAMACR 

7C 


SMCARS16 

50 

20 

SMCADSNF 

50 

01 

SMCAMAN 

1 

40 

SMCARS17 

50 

10 

SMCADSTM 

6C 


SMCAMAXT 

C8 


SMCARS18 

50 

08 

SMCADTB 

CC 


SMCAMISC 

1 


SMCARS19 

50 

04 

SMCA 








SMCA 

LC28-1389-0 

(c) Copyright IBM 

Corp. 1980^ 

1985 


Data Area Descriptions 

105 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 




HEX 

VALUE 


HEX 

OFFSET 

HEX 

VALUE 

NAME 

H3533I 

HEX 

VALUE 

SMCARS20 

50 

02 

SMCASRB 

D8 


SMCAS842 

c 


SMCARTRY 

D1 

40 

SMCASRBF 

D2 

20 

SMCATDS 

0 

02 

SMCARUN 

DO 

04 

SMCASRBR 

100 


SMCATERM 

D2 

80 

SMCASACT 

158 


SMCASRCT 

30 


SMCATEXP 

84 


SMCASAVE 

80 


SMCASSB 

BC 


SMCATIMR 

D3 

10 

SMCASBCT 

34 


SMCASSTP 

148 


SMCATJID 

7A 


SMCASETC 

D3 

04 

SMCASSTS 

98 


SMCATOFF 

2 


SMCASETP 

D1 

10 

SMCASTCB 

B0 


SMCATQE 

130 


SMCASETR 

D3 

08 

SMCASTTR 

D3 

40 

SMCAUSER 

1 

80 

SMCASETS 

D1 

01 

SMCASTTT 

C4 


SMCAU29 

D2 

08 

SMCASID 

10 


SMCASTUS 

DO 

08 

SMCAU83 

A8 


SMCASIZE 

15E 

0160 

SMCASUBP 

60 


SMCAVOL 

0 

08 

SMCASJWT 

90 


SMCASUSR 

D3 

20 

SMCAHAIT 

48 


SMCASKD 

DO 

02 

SMCASVCR 

FC 


SMCAWRTP 

54 


SMCASMCA 

4 


SMCASYSP 

14C 


SMCAHTCB 

AC 



SMCASMDM 94 


SMCA SMCA 

106 MVS/370 Debug Hdbk Vol 5 LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SMDLR 


Common Name : Summary Dump Logical Record 

Macro ID : IHASMDLR 

DSECT Name : SMDLR 

Created by : IEAVTSSD 

Subpool and Key : Not applicable 

Size : 20 bytes plus the length of the data contained in the record 

Pointed to by : None 
Serialization : None 

Function : The summary dump logical record describes each record of a 
summary dump. It provides a format by which a summary dump can be 
accessed and printed. It tells the type* address* asid* and length of 
the data dumped as one summary dump record. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) STRUCTURE 

B 

SMDLR 


0 

(0) HEX 

20 

SMDLRHDR 

HEADER FOR EACH SUMMARY DUMP LOGICAL 
RECORD 

0 

(0) SIGNED 

2 

SMDLRID 

UNIQUE ID FOR EACH RECORD. SEE THE CON¬ 
STANTS BELOW 

2 

(2) SIGNED 

2 

SMDLRAID 

ASID OF FOLLOWING DATA COMMON AREA 
DENOTED BY FFFF 

4 

(4) SIGNED 

4 

SMDLRLEN 

TOTAL LENGTH OF THE DATA AREA MHICH IS 
REPRESENTED BY THIS LOGICAL RECORD AND 
ALL ITS CONTINUATIONS. THIS WILL BE 0 

FOR A CONTINUATION 

8 

(8) SIGNED 

4 

SMDLRADR 

ORIGINAL ADDR OF THE DATA FOLLOWING 

12 

(C) SIGNED 

4 

SMDLRPL 

LENGTH OF THE DATA THAT ACTUALLY FOLLOWS 
THIS HEADER 

16 

(10) HEX 

1 

SMDLRMSG 

IF NONZERO THIS IS THE ID OF A SUMMARY 


DUMP MESSAGE MHICH IS TO BE GENERATED AS 
PART OF THE PRINTED OUTPUT WHEN THE DATA 


I 


SMDLR 

LC28-1389-0 (c) Copyright IBM Corp. 1980* 


1985 


SMDLR 

Data Area Descriptions 107 











Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 

IS FORMATED 

17 (11) HEX 3 RESERVED 


20 (14) CHARACTER 1 SMDLRDAT DATA 

SMDPASID "X'FFFA'^C'H'" PSEUDO ASID FOR THE 

SUMMARY DUMP RECORDS IN THE SDUMP 


CONSTANTS IDENTIFYING MESSAGES TO BE ASSOCIATED WITH SUMMARY 

DUMP RECORDS. SEE FIELD SMDLRMSG 



...1 

SMDLSTER 

"1" AN ERROR IN THE SDUMP SUMLIST 



.. 1 . 

SMDN0RT2 

"2" NO RTM2 WA FOUND FOR THE ASID 



..11 

SMDIHSER 

"3" THE RELEVENT IHSA COULD NOT BE 
ADDRESSED 



.1.. 

SMDLWSER 

"4" THE RELEVENT LOCAL WSA COULD NOT BE 
ADDRESSED 



.1.1 

SMDSLAER 

"5" AN ERROR IN THE SDUMP SMLSTA 



.11. 

SMDRNGER 

"6" A SPECIFIED ADDRESS RANGE WAS INVAL¬ 
ID 



.111 

SMDPCLER 

"7" THE PCLINK STACK CHAIN COULD NOT BE 
ACCESSED 



1 ... 

SMDASDER 

"8" THE SPECIFIED ASID COULD NOT BE 
ACCESSED 



1..1 

SMDRNGRF 

"9" A SPECIFIED ADDR RANGE COULD NOT BE 
ACCESSED 



1.1. 

SMDSPNDR 

"10" AN ERROR OCCURRED CAUSING THE TER¬ 
MINATION OF A SUSPEND SUMMARY DUMP 

CONSTANTS IDENTIFYING 
SUMMARY DUMP RECORDS. 

MESSAGES TO BE ASSOCIATED WITH SUSPEND 

SEE FIELD SMDLRMSG. 

• • 

• • 

1.11 

SMDSPDBL 

"11" SUSPEND SUMMARY DUMP CALLER WAS 
DISABLED 

• • 

• • 

11.. 

SMDSPNOD 

"12" THE DUMPSRV ADDRESS SPACE WAS NOT 
ACTIVE 

♦ « 

• • 

11.1 

SMDSPDSE 

"13" THE DUMPSRV ADDRESS SPACE WAS IN 


SMDLR 

108 


MVS/370 Debug Hdbk Vol 5 


SMDLR 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE _ LENGTH NAME _ DESCRIPTION 

ERROR 

_ 111. SMDSPDHM "14” THE CALLERS HOME ADDRESS SPACE NAS 

DUMPSRV 

.... 1111 SMDSPLDS "15" THE CALL HELD LOCAL LOCK OF DUMPSRV 

AS CML 

...1 _ SMDNOSSV "16" MODULE IEAVTSSV COULD NOT BE FOUND 


CONSTANTS IDENTIFYING EACH TYPE OF SUMMARY DUMP RECORD. SEE 
FIELD SMDLRID 


• * 

.. .1 

SMDPCCA 

• « 

.. 1 . 

SMDLCCA 

• 41 

. .11 

SMDPSA 

• • 

. 1 .. 

SMDTRT 

11 

1 . 1 . 

SMDR2TRT 

• • 

. 1.1 

SMDFRRS 

1 . 

111 . 

SMDLIST 

1 . 

1111 

SMDIHSA 

11 

• • • • 

SMDREGV 

11 

.. .1 

SMDPSWS 

11 

. . 1 . 

SMDWSAGV 

• * 

. 11 . 

SMDGPGIO 

• • 

.111 

SMDGGMFM 

• • 

1 ... 

SMDGNUSD 

« • 

1 . .1 

SMDGSSRS 

♦ • 

1 . 1 . 

SMDGEMSO 

♦ « 

1.11 

SMDGSTAT 

• • 

11 . . 

SMDGOPTM 

• • 

11.1 

SMDGMEMT 

♦ « 

111 . 

SMDGNQDQ 

• • 

1111 

SMDGREST 

.1 

• • • • 

SMDWSCHE 

11 

11.1 

SMDGSLTO 

11 

1111 

SMDGDCCR 


SMDLR 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 


"1" PCCA PHYSICAL CONFIG COMMUNICATION 
AREA 

"2" LCCA LOCAL CONFIG COMMUNICATION AREA 
"3" PSA PREFIX SAVE AREA 
"4" SYSTEM TRACE TABLE WITH PRECEEDING 
CNTL INFO 

"58" SYSTEM TRACE TABLE W/0 PRECEEDING 
CNTL INFO 

"5" THE SUPERVISOR FRR STACKS 

"46" STORAGE INDICATED BY THE SUMLIST 

KEYWORD 

"47” IHSA INT HANDLER SAVE AREA 

”48” STORAGE NEAR ADDRESSES IN REGISTERS 

”49” STORAGE NEAR ADDRESSES IN PSWS 

"50” WSAVTG GLOBAL WSA VECTOR TABLE 

"6" WSA FOR PAGE 10 

"7" WSA FOR GETMAIN/FREEMAIN 

"8" CURRENTLY UNUSED 

"9" WSA FOR SUSPEND/RESET FOR RSM 

"10" WSA FOR MEMORY SWITCH 

"11" WSA FOR STATUS 

”12" WSA FOR SYSTEM RESOURCE MANAGER 

"13" WSA FOR MEMORY TERMINATION 

"14" CURRENTLY UNUSED 

"15" WSA FOR STOP RESTART ROUTINE 

"16" WSA FOR SCHEDULE ROUTINE (BRANCH 

ENTRY) 

"61" WSA FOR SPIN LOOP TIMEOUT NOTIFY 
"63" WSA FOR GLOBAL DISABLED CONSOLE 


SMDLR 

1985 Data Area Descriptions 109 









Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


1 .. 

1111 

SMD 6 RSFL 

"79" 

MSA 

FOR 

RESTART FLIH 

.11 

..11 

SMDMSACV 

"51" 

HSAVTC CPU MSA VECTOR TABLE 

. .1 

.. .1 

SMDCCWSA 

"17" 

MSA 

FOR 

LOH-LEVEL COMMON 

..1 

. . 1 . 

SMDCGTF 

"18" 

MSA 

FOR 

GENERALIZED TRACE FACILITY 

. .1 

. .11 

SMDCOPTM 

"19" 

MSA 

FOR 

SYSTEM RESOURCES MANAGER 

. .1 

. 1 .. 

SMDCTIME 

" 20 " 

MSA 

FOR 

TIMER SAVE AREA 

. .1 

. 1.1 

SMDCACR 

" 21 " 

TION 

MSA 

FOR 

AUTOMATIC CPU RECONFI 6 URA- 

. .1 

. 11 . 

SMDCRTMK 

n 22 n 

MSA 

FOR 

RTM MACHINE CHECK HANDLER 

..1 

.111 

SMDCIOS 

"23" 

MSA 

FOR 

IOS FLIH 

..1 

1 ... 

SMDCEDSO 

"24" 

MSA 

FOR 

DISPATCHER 

. .1 

1..1 

SMDCMF1 

"25" 

MSA 

FOR 

MANAGEMENT FACILITY 1 

. .1 

1 . 1 . 

SMDCABTM 

"26" 

MSA 

FOR 

ABTERM 

. .1 

1.11 

SMDCRSTI 

"27" 

MSA 

FOR 

RESTART 

..1 

11 .. 

SMDCREST 

"28" 

MSA 

FOR 

STOP RESTART 

. .1 

11.1 

SMDCRRSA 

»29n 

MSA 

FOR 

SUPERVISOR REPAIR ROUTINE 

. .1 

111 . 

SMDCCCH 

"30" 

MSA 

FOR 

RMS CHANNEL CHECK HANDLER 

.11 

. 11 . 

SMDCASMD 

<15411 

DLER 

MSA 

FOR 

ASM DISABLED INTERRUPT HAN- 

.11 

.111 

SMDCASMS 

"55" 

MSA 

FOR 

ASM SRB DRIVEN 10 ROUTINES 

.11 

111 . 

SMDCDCON 

"62" 

MSA 

FOR 

DISABLED CONSOLE SUPPORT 

1 .. 

1 . 1 . 

SMDCRSM 

"74" 

MSA 

FOR 

REAL STORAGE MANAGEMENT 

1 .. 

1.11 

SMDCSLPR 

"75" 

MSA 

FOR 

SLIP/PER 

1 .. 

11 .. 

SMDCASFT 

"76" 

MSA 

FOR 

ASVT/AFT RECONSTRUCT 

1 .. 

11.1 

SMDCRSFL 

"77" 

MSA 

FOR 

THE RESTART FLIH 

1 .. 

111 . 

SMDCMFAL 

"78" 

MSA 

FOR 

MALFUNCTION ALERT 

.11 

. 1 .. 

SMDHSALV 

"52" 

MSAVTL LOCAL MSA VECTOR TABLE 

. .1 

1111 

SMDLCWSA 

"31" 

MSA 

FOR 

LOM-LEVEL COMMON 

. 1 . 

• • • • 

SMDLVALC 

"32" 

MSA 

FOR 

VALIDITY CHECK ROUTINE 

. 1 . 

.. .1 

SMDLRTM2 

"33" 

MSA 

FOR 

RTM 

. 1 . 

. . 1 . 

SMDLSDMP 

"34" 

MSA 

FOR 

SDUMP 

. 1 . 

. .11 

SMDLABTM 

"35" 

MSA 

FOR 

ABTERM 

. 1 . 

. 1 .. 

SMDLCIRB 

"36" 

MSA 

FOR 

CIRB 

. 1 . 

. 1.1 

SMDLS2EE 

"37" 

MSA 

FOR 

STAGE 2 EXIT EFFECTOR 

. 1 . 

. 11 . 

SMDLEXIT 

"38" 

MSA 

FOR 

EXIT (SVC 3) 

. 1 . 

.111 

SMDLPOST 

"39" 

MSA 

FOR 

POST 

. 1 . 

1 ... 

SMDLWAIT 

"40" 

MSA 

FOR 

MAIT 

. 1 . 

1 . .1 

SMDLSTAT 

"41" 

MSA 

FOR 

STATUS 

. 1 . 

1 . 1 . 

SMDLSTAE 

"42" 

MSA 

FOR 

STAE 

. 1 . 

1.11 

SMDLEVNT 

"43" 

MSA 

FOR 

EVENTS (FAST MULTIPLE MAIT) 

. 1 . 

11 .. 

SMDLRSM 

04411 

MSA 

FOR 

REAL STORAGE MANAGER 


SMDLR 

110 


MVS/370 Debug Hdbk Vol 5 


SMDLR 

LC28-1389-0 <c) Copyright IBM Corp. 1980, 1985 




Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


1 . 

11.1 

SMDLACHP 

**45** 

WSA FOR ASCB CHAP ROUTINE 

11 

1 ... 

SMDSDWA 

"56" 

SDWA SYSTEM DIAGNOSTIC WORK AREA 

11 

1 . .1 

SMDRTM2A 

"57" 

RTM2WA RTM2 WORK AREA 

11 

1.11 

SMDNULL 

"59" 

EMPTY RECORD,CONTAINS NO DATA 

11 

11 .. 

SMDASIDR 

"60" ASID JOB PROCSTEP & STEP NAME FOR 
FOLLOWING RECORDS 

» « ♦ 

• * * ♦ 

SMDXSB 

"64" 

XSB ASSOCIATED WITH THE IHSA 

• • » 

.. .1 

SMDSTKE 

"65" 

PCLINK STACK ELEMENT 

1 • • 

.. 1 . 

SMDLISTA 

" 66 " 

ID FOR SUMLSTA RECORDS 

• • • 

. .11 

SMDXMASD 

"67" 

ID FOR CROSS MEMORY ASID RECORD 


RECORD IDS FOR THE SUSPEND SUMMARY DUMP 


. 1 .. 

. 1 .. 

SMDHASCB 

" 68 " 

ASCB 

SUSPEND 

SUMMARY 

DUMP CALLER HOME 

. 1 .. 

. 1.1 

SMDCTCB 

"69" 

TCB 

SUSPEND 

SUMMARY 

DUMP CALLER HOME 

. 1 . . 

. 11 . 

SMDCRB 

"70" 

SUSPEND 

SUMMARY 

DUMP CALLER HOME RB 

. 1 .. 

.111 

SMDCSSRB 

"71" 

SSRB 

SUSPEND 

SUMMARY 

DUMP CALLER HOME 

. 1 .. 

1 ... 

SMDHCSAV 

"72" 

SAVE 

SUSPEND 

SUMDUMP 

CALLER REGISTER 

. 1 . . 

1 . .1 

SMDSPEND 

"73" 

SUSPEND 

SUMDUMP 

ERROR RECORD ID 

. 11 . 

..11 

SMDUNKWN 

1199(1 

UNKNOWN 

RECORD ID 

. .11 

. 1.1 

SMDEOD 

"53" 

END OF SUMMARY DUMP 


. 1980, 


SMDLR 

LC28-1389-0 (c) Copyright IBM Corp 


1985 


SMDLR 

Data Area Descriptions 111 






Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 

CROSS REFERENCE 


NAME 

HEX 

OFFSET 

HEX 

VALUE 

NAME 


HEX 

VALUE 

NAME_ 

HEX 

OFFSET 

HEX 

VALUE 

SMDASDER 

14 

08 

SMDGPGIO 

14 

06 

SMDLS2EE 

14 

25 

SMDASIDR 

14 

3C 

SMDGREST 

14 

OF 

SMDLVALC 

14 

20 

SMDCABTM 

14 

1A 

SMDGRSFL 

14 

4F 

SMDLWAIT 

14 

28 

SMDCACR 

14 

15 

SMDGSLTO 

14 

3D 

SMDLWSER 

14 

04 

SMDCASFT 

14 

4C 

SMDGSSRS 

14 

09 

SMDN0RT2 

14 

02 

SMDCASMD 

14 

36 

SMDGSTAT 

14 

OB 

SMDNOSSV 

14 

10 

SMDCASMS 

14 

37 

SMDHASCB 

14 

44 

SMDNULL 

14 

3B 

SMDCCCH 

14 

IE 

SMDHCSAV 

14 

48 

SMDPASID 

14 

FFFA 

SMDCCWSA 

14 

11 

SMDIHSA 

14 

2F 

SMDPCCA 

14 

01 

SMDCDCON 

14 

3E 

SMDIHSER 

14 

03 

SMDPCLER 

14 

07 

SMDCEDSO 

14 

18 

SMDLABTM 

14 

23 

SMDPSA 

14 

03 

SMDC6TF 

14 

12 

SMDLACHP 

14 

2D 

SMDPSWS 

14 

31 

SMDCIOS 

14 

17 

SMDLCCA 

14 

02 

SMDREGV 

14 

30 

SMDCMFAL 

14 

4E 

SMDLCIRB 

14 

24 

SMDRNGER 

14 

06 

SMDCMF1 

14 

19 

SMDLCWSA 

14 

IF 

SMDRNGRF 

14 

09 

SMDCOPTM 

14 

13 

SMDLEVNT 

14 

2B 

SMDRTM2A 

14 

39 

SMDCRB 

14 

46 

SMDLEXIT 

14 

26 

SMDR2TRT 

14 

3A 

SMDCREST 

14 

1C 

SMDLIST 

14 

2E 

SMDSDWA 

14 

38 

SMDCRRSA 

14 

ID 

SMDLISTA 

14 

42 

SMDSLAER 

14 

05 

SMDCRSFL 

14 

4D 

SMDLPOST 

14 

27 

SMDSPDBL 

14 

OB 

SMDCRSM 

14 

4A 

SMDLR 

0 


SMDSPDHM 

14 

OE 

SMDCRSTI 

14 

IB 

SMDLRADR 

8 


SMDSPDSE 

14 

OD 

SMDCRTMK 

14 

16 

SMDLRAID 

2 


SMDSPEND 

14 

49 

SMDCSLPR 

14 

4B 

SMDLRDAT 

14 


SMDSPLDS 

14 

OF 

SMDCSSRB 

14 

47 

SMDLRHDR 

0 


SMDSPNDR 

14 

OA 

SMDCTCB 

14 

45 

SMDLRID 

0 


SMDSPNOD 

14 

OC 

SMDCTIME 

14 

14 

SMDLRLEN 

4 


SMDSTKE 

14 

41 

SMDEOD 

14 

35 

SMDLRMSG 

10 


SMDTRT 

14 

04 

SMDFRRS 

14 

05 

SMDLRPL 

C 


SMDUNKWN 

14 

63 

SMDGDCCR 

14 

3F 

SMDLRSM 

14 

2C 

SMDWSACV 

14 

33 

SMDGEMSO 

14 

0A 

SMDLRTM2 

14 

21 

SMDWSAGV 

14 

32 

SMDGGMFM 

14 

07 

SMDLSDMP 

14 

22 

SMDHSALV 

14 

34 

SMDGMEMT 

14 

OD 

SMDLSTAE 

14 

2A 

SMDWSCHE 

14 

10 

SMDGNQDQ 

14 

OE 

SMDLSTAT 

14 

29 

SMDXMASD 

14 

43 

SMDGNUSD 

14 

08 

SMDLSTER 

14 

01 

SMDXSB 

14 

40 

SMDGOPTM 

14 

OC 








SMDLR 

112 


MVS/370 Debug Hdbk Vol 5 


SMDLR 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SMEW 


Common Name : RTCT SDUMP Extension 
Macro ID : IHASMEW 
DSECT Name : SMEW 

Created by : IEAVTSAI during DUMPSRV address space creation 
Subpool and Key : Subpool 229 in DUMPSRV's private, key 0 
Size s 52 bytes 

Pointed to by : RTCTSMEW field of the RTCT data area 

Serialization s Same serialization that only allows 1 SDUMP at a time. 
CVTSDBF - high order bit. RTCTSDPL - pointer to SDUMP parameter list. 
Function : Used to hold information pertaining to the Dumping 
Services (DUMPSRV) address space. The information is used by the 
summary dump processor when taking an enabled suspend summary dump. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) 

STRUCTURE 

52 

SMEW 

SUMMARY DUMP EXTENDED WORK AREA 

0 

(0) 

CHARACTER 

4 

SMEWID 

EBCDIC IDENTIFIER SMEW- 

4 

(4) 

CHARACTER 

12 

SMEWVB 

VIRTUAL BUFFER INFORMATION 

4 

(4) 

SIGNED 

4 

SMEWVBST 

START OF VIRTUAL BUFFER 

8 

(8) 

SIGNED 

4 

SMEWVBEN 

END OF VIRTUAL BUFFER 

12 

(C) 

SIGNED 

4 

SMEWVBCT 

BLOCK COUNT FOR VIRT BUFF 

16 

(10) 

ADDRESS 

2 

SMEWSASD 

ASID OF SDUMP CALLER 

18 

(12) 

ADDRESS 

2 


RESERVED 

20 

(14) 

ADDRESS 

4 

SMEWRTRN 

COMMON RETURN REGISTER SAVE AREA 

24 

(18) 

CHARACTER 

20 

SMEWCNTL 

AREA FOR CONTROLLING THE BUFFER 

24 

(18) 

ADDRESS 

2 

SMEWVSPC 

SPACE REMANING ON CURRENT PAGE 

26 

(1A) 

ADDRESS 

2 

SMEWVBUS 

NUMBER OF BUFFER BLOCKS USED 


SMEW 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SMEW 

Data Area Descriptions 113 













Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS_mi_ LENGTH NAME _ DESCRIPTION 


28 

(1C) ADDRESS 

4 

SMEWVBLK 

ADDRESS OF CURRENTLY USED BLOCK 

32 

(20) ADDRESS 

4 

SMEWVBAD 

ADDRESS OF FREE DATA SPACE 

36 

(24) ADDRESS 

4 

SMEWPSAD 

CURRENT SUMDUMP PSEUDO ADDRESS 

40 

(28) CHARACTER 

4 

SMEWFLGS 

FLAGS USED TO CONTROL BUFFER 

40 

(28) CHARACTER 

1 • • • •••• 

* 1 *• •••• 

•• 1 * •••• 

1 

SMEWFLG1 

SMEWVSBW 

SMEWSBIT 

SMEWVSBF 

FIRST BYTE OF FLAGS 

1=VIRTUAL BUFFER TO WRITE OUT 

1=S-BIT ONE DURING MOVE PROCESS 

1-VIRTUAL STORAGE BUFFER IS FULL 

44 

(20 ADDRESS 

4 


RESERVED 

48 

(30) ADDRESS 

4 


RESERVED 


SMEW 

114 


MVS/370 Debug Hdbk Vol 5 


LC28-1389-0 (c) Copyright IBM Corp. 1980, 


SMEW 

1985 









Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SMPL 


Common Name : Storage Management Parameter List Entry 
Macro ID : ISGSMPL 
DSECT Name : SMPL 

created by : Created by the caller of ISGSALC, ISGSDAL and ISGSME. 
Subpool and Key : Subpool determined by the caller; key 0 
Size : 16 bytes per entry 

Pointed to by : Pointer maintained by the caller. 

Serialization : None 

Function : Each Storage Management Parameter List Entry represents a 
request to the Global Resource Serialization Storage Manager. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) STRUCTURE 

16 

SMPL 

STORAGE MANAGEMENT PARM LIST ENTRY 

0 

(0) UNSIGNED 

1 

SMPFLAGS 

INDICATOR FLAGS 


1 • • • * • *» 


SMPEOPL 

END OF PARM LIST INDICATOR WHEN 1, THIS 
ENTRY IS LAST ENTRY OF THE PARAMETER 

LIST 


• 1*1 


SMPGLIND 

GLOBAL/LOCAL INDICATOR 0 = LOCAL CONTROL 
BLOCK, 1 = GLOBAL CONTROL BLOCK 


. .1 . 


SMPRSV1 

RESERVED 


...1 _ 


SMPRSV2 

RESERVED 


_ 1 ... 


SMPRSV3 

RESERVED 


. 1 .. 


SMPRSV4 

RESERVED 


. 1 . 


SMPRSV5 

RESERVED 


. 1 


SMPRSV6 

RESERVED 

1 

(1) CHARACTER 

1 

SMPRSV7 

RESERVED 

2 

(2) UNSIGNED 

2 

SMPINDEX 

INDEX NUMBER OF THE RESOURCE POOL TABLE 
ENTRY FOR THE CELL REQUESTED 

A 

(4) CHARACTER 

4 

SMPRSV8 

RESERVED 

8 

(8) UNSIGNED 

4 

SMPCNUM 

NUMBER OF CELLS REQUESTED TO BE ALLO¬ 
CATED. NOT USED FOR DEALLOCATION 


SMPL 

LC2B-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SMPL 

Data Area Descriptions 115 










Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


12 (C) ADDRESS A SMPCADDR INPUT ADDRESS OF FIRST CELL TO BE DEAL¬ 

LOCATED, OUTPUT ADDRESS OF FIRST CELL 
THAT MAS ALLOCATED 


16 (10) CHARACTER 0 SMPEND END OF SMPL 


SMPL 

116 


MVS/370 Debug Hdbk Vol 5 


SMPL 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 




Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SEPT 


Common Name : RSM Swap Control Table 
Macro ZD : IHASPCT 
DSECT Name : SPCT 

Created by i IEAVITAS (RSM supervisor) 
subpool and Key : 245 and key 0 

Size : 168 bytes 

Pointed to by : RSMSPCT field of the RSMHD data area 
Serialization : SALLOC lock 

Function : Contains the necessary information to complete a swapout or 
swapin operation. 

PJEFSETS_HEI_ LENGTH _NAME _ ^ESSBIEllSh 


0 

(0) STRUCTURE 

168 

SPCT 

DECLARE SPCT LEVEL 1 

0 

(0) ADDRESS 

4 

SPCTSWRT 

VSA OF THE SNAP IN ROOT PCB IF SPCTSHIN 
= 1. VSA OF SWAP OUT WORK PCB IF SPCTOUT 
= 1 . 

4 

(4) SIGNED 

2 

SPCTFIX 

NUMBER OF FIX ENTRIES IN THIS SPCT 

6 

( 6 ) SIGNED 

2 

SPCTLSQA 

NUMBER OF LSQA ENTRIES IN THIS SPCT 

8 

( 8 ) UNSIGNED 

1 

SPCTNSEG 

NUMBER OF SEGMENT ENTRIES THAT CAN BE 
HELD IN THIS SPCT 

9 

(9) UNSIGNED 

1 

SPCTSSEG 

NUMBER OF ACTIVE SEGMENT ENTRIES IN THIS 
SPCT. THERE IS ONE ENTRY FOR EACH ACTIVE 
PRIVATE AREA SEGMENT. 

10 

(A) BITSTRING 

1 

SPCTFLG1 

SPCT FLAG BYTE 


X •« • 


SPCTSWIN 

1 SWAP-IN IN PROGRESS 


« 1 • • I * • • 


SPCTOUT 

1 SWAP OUT IN PROGRESS 


• •X* ••»* 


SPCTPURG 

1 PAGING WAS PURGED DURING SWAP OUT 


• ••1 •••• 


SPCTBIG 

1 THERE EXISTS ONE OR MORE FIX ENTRIES 
WITH A FIX COUNT GREATER THAN 255 


• ••• 1 • • • 


SPCTPSET 

1 PAGE DATASET USED FOR LSQA PAGES ON 
LAST SWAP OUT. 0 SWAP DATASET USED FOR 
LSQA PAGES ON LAST SWAP OUT. 


» » * t • 1 • • 


SPCTVROT 

1 SWAP OUT HAS BEEN REQUESTED BY VEQRP 


SPCT SPCT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 Data Area Descriptions 117 







Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


(B) CHARACTER 


1 SPCTIDEN 


RESERVED BIT FLAGS 

IEAVITAS WILL SET TO SPCT ID CHARACTER 
•S' 


12 (C) SIGNED 2 SPCTWSSZ WORKING SET SIZE (SUM OF LSQA, PRIVATE 

FIXED/ COMMON FIXED, STAGE-1 PAGEABLE 
AND STAGE-2 PAGEABLE PAGES TO BE BROUGHT 
INTO STORAGE AT SWAP-IN TIME. NOTE THAT 
COMMON FIXED PAGES MAY ALREADY BE IN 
STORAGE AT SWAP-IN TIME, AND THAT ALLO¬ 
CATION OF FRAMES TO STAGE-2 PAGEABLE 
PAGES CAN BE DEFERRED) 

14 (E) SIGNED 2 SPCTSIZE THE SIZE IN BYTES OF THE SPCT 

16 (10) CHARACTER 152 SPCTSWAP THIS AREA AND EVERY EXTENSION IS MAPPED 

BY SPCTEXTM 


SPCT 

118 


MVS/370 Debug Hdbk Vol 5 


SPCT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 




Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


SPCTSWAP CONTAINS A MAXIMUM OF 18 FIX SWAP ENTRIES, OR 24 
LSQA/PAGEABLE-PAGE SWAP ENTRIES, OR A COMBINATION OF THE TWO 
NOT EXCEEDING 144 BYTES. LSQA ENTRIES COME FIRST, FOLLOWED 
BY PAGEABLE-PAGE ENTRIES (IF ANY), AND THE FIX ENTRIES COME 
LAST. SPCTSWAP, ALTHOUGH PHYSICALLY CONTAINED IN THE BASE 
SPCT STORAGE AREA, IS LOGICALLY THE FIRST SPCT SWAP-ENTRY 
EXTENSION, AND IS MAPPED BY THE SPCTEXTM STRUCTURE. BYTES 4 
THRU 7 OF EACH SPCT SWAP-ENTRY EXTENSION ARE RESERVED. FOR 
SPCTSWAP, HOWEVER, THESE FOUR BYTES ARE USED TO HOLD 
COUNTERS OF THE NUMBER OF STAGE-1 PAGEABLE-PAGES PAGES TO BE 
BROUGHT IN AT SWAP-IN TIME, AND THE NUMBER OF STAGE-1 
PAGEABLE-PAGE SPCT ENTRIES. THUS, SPCTSWAP IS MAPPED HERE IN 
THE SPCT HEADER AS THE 'NEGATIVE* OF ITS IMAGE UNDER THE 
SPCTEXTM MAPPING. THE FIRST FOUR BYTES AND THE LAST 144 
BYTES ARE HERE CALLED 'RESERVED', BECAUSE THEY ARE USED, NOT 
AS PART OF THE BASE SPCT, BUT RATHER AS PART OF THE FIRST 
SPCT SWAP-ENTRY EXTENSION, WHICH HAPPENS TO BE LOCATED HERE 
IN THE BASE SPCT STORAGE AREA, BUT WHICH IS MAPPED BY 
SPCTEXTM. IN THE SPCTEXTM MAPPING, BYTES 4-7 OF THE SPCT 
EXTENSION ARE DEFINED AS RESERVED, SINCE, IN ALL SPCT 
SWAP-ENTRY EXTENSIONS EXCEPT THE FIRST THEY REALLY ARE 

RESERVED, AND, IN THE THE FIRST EXTENSION - THE ONE 

DEFINED HERE, ON SPCTSWAP, IN THE SPCT BASE -, THEY ARE 

ADDRESSED BY THEIR OFFSET FROM THE BASE, NOT AS PART OF THE 
SWAP-ENTRY EXTENSION MAPPED ONTO BYTES 16-167 OF IT. 


1_ 


■ ■ , _ ■ —1 

16 

(10) CHARACTER 4 

RESERVED (SEE SPCTEXTM MAPPING) 


20 (14) SIGNED 2 SPCTS1PP 


22 (16) SIGNED 2 SPCTS1PE 


COUNT OF PAGEABLE PAGES SWAPPED OUT 
ALONG WITH THE LSQA PAGES. THESE PAGEA¬ 
BLE WORKING SET PAGES WILL BE BROUGHT IN 
AS PART OF STAGE-1 SWAP-IN (THIS COUNT 
DOES NOT INCLUDE PAGEABLE PAGES TO BE 
SWAPPED IN AS PART OF STAGE-2 SWAP-IN) 
COUNT OF NUMBER OF PAGEABLE-PAGE SPCT 
ENTRIES IN THIS SPCT (DIFFERS FROM THE 
COUNT IN 'SPCTS1PP* BY THE NUMBER OF 


SPCT SPCT 

LC28-1389-0 (c) Copyright IBM Cor;'. 1980, 1985 Data Area Descriptions 119 







Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


SPCT PAGEABLE-PAGE ENTRIES IN WHICH 
SPCTN0P=1, I.E., THE NUMBER OF NO-OP’D 
SPCT PAGEABLE-PAGE ENTRIES) 


24 

(18) CHARACTER 

144 


RESERVED (SEE SPCTEXTM MAPPING) 

168 

(A8) CHARACTER 

0 

SPCTSEGS 

AN AREA CONTAINING A LIST OF SEGMENT 
ENTRIES FOR THE ADDRESS SPACE. AS SEG¬ 
MENTS ARE CREATED OR DESTROYED FOR THE 
ADDRESS SPACE THIS AREA EXPANDS OR CON¬ 
TRACTS AS REQUIRED IN INCREMENTS OF 96 
BYTES (6 BYTES PER ACTIVE SEGMENT). 

0 

(0) STRUCTURE 

6 

SPCTSEGE 

DECLARE BASE FOR ENTRY 

0 

(0) ADDRESS 

1 

SPCTSEGX 

CORRESPONDING INDEX INTO SEGMENT TABLE 
FOR THIS ENTRY. 

1 

(1) BITSTRING 

3 

SPCTPGT 

VSA OF PAGE TABLE FOR SEGMENT IDENTIFIED 
IN INDEX. 

4 

(4) BITSTRING 

2 

SPCTBITM 

BIT MAP REPRESENTING PRIVATE AREA SEG¬ 
MENT EACH PAGE MAPS TO A UNIQUE FLAG 

BIT. 1 PAGE IS TO BE SWAPPED IN. 

0 

(0) STRUCTURE 

8 

SPCTSWPE 

DECLARE BASE FOR ENTRY 

0 

(0) CHARACTER 

6 

SPCTLSPP 

REFERENCE TO BEGINNING OF A LSQA OR 
PAGEABLE-PAGE ENTRY 

0 

(0) BITSTRING 

1 • • • •••« 

• X • • •••• 

••X* •••• 

i 

SPCTFLAG 

SPCTLVAL 

SPCTNFX 

SPCTBBLO 

SPCT FLAG BITS. 

1=LSID IN SPCTSSID IS VALID 

1=THIS IS A 6 BYTE LSQA OR PAGEABLE-PAGE 
ENTRY (I.E., IT IS NOT AN 8 BYTE FIX 
ENTRY) 

1=THIS SPCT ENTRY IS FOR A PAGEABLE PAGE 
WHOSE XPTE HAS THE 'BACK BELOW’ BIT ON. 
IF POSSIBLE, A FRAME BELOW 16 MEG REAL 
SHOULD BE ASSIGNED ON SWAP-IN, BECAUSE 

IT IS EXPECTED THAT THIS PAGE, THOUGH 
CURRENTLY PAGEABLE, MAY BE FIXED IN 


SPCT SPCT 

120 MVS/370 Debug Hdbk Vol 5 LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 









Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 

FUTURE, AND, IF THAT HAPPENS, ASSIGNING 
A 'BELOW' FRAME ON SWAP-IN MAY SAVE A 
SPCTDEFR 1=PAGE WAS FLAGGED DEFER RELEASE AT SWAP 

TIME. 

SPCTPP 1*THIS IS A PAGEABLE-PAGE SPCT ENTRY. 

THIS BIT CAN BE =1 ONLY WHEN SPCTNFX IS 
ALSO =1 

SPCTCHGD 1*THIS PAGE WAS CHANGED AT SWAP-OUT 

TIME, SO THAT THE CHANGE BIT MUST BE SET 
ON IN THE PROTECT KEY AT SWAP-IN TIME, 

I.E.,THIS IS A PAGEABLE PAGE FOR WHICH 
NO VALID AUX COPY EXISTS, BECAUSE IT WAS 
SWAPPED ALONG WITH THE LSQA, AND SWAP-IN 
WILL DELETE THAT AUX COPY (BECAUSE IT 
WILL NORMALLY BE ON AN ASM SWAP DATA¬ 
SET). SPCTCHGD CAN BE =1 ONLY WHEN 
SPCTPP ALSO IS =1 



• ft 

• •« X • 


SPCTNOP 

1=THIS SPCT ENTRY HAS BEEN NO-OP'D, AND 
SWAP-IN PROCESSING SHOULD IGNORE THIS 
SPCT ENTRY 


* « • 

. ...1 



RESERVED 

1 

(1) 

CHARACTER 

3 

SPCTSSID 

THREE BYTE LSID 

4 

(4) 

BITSTRING 

2 

SPCTVBN 

VBN AND RESERVED BITS 

6 

(6) 

SIGNED 

2 

SPCTFIXC 

FIX COUNT ASSOCIATED WITH FIX ENTRY. 

THIS FIELD DOESN'T EXIST FOR LSQA OR 
PAGEABLE-PAGE ENTRY 

0 

(0) 

STRUCTURE 

152 

SPCTEXTM 

DECLARE STRUCTURE BASED 

0 

(0) 

ADDRESS 

4 

SPCTEXT 

ADDRESS OF NEXT EXTENSION 

4 

(4) 

CHARACTER 

4 


RESERVED (SEE BLOCK COMMENT PRECEDING 
SPCTSWAP AREA MAPPING IN SPCT BASE) 

8 

(8) 

CHARACTER 

144 

SPCTENT 

SPACE FOR FIX AND LSQA AND PAGEABLE-PAGE 
SPCT ENTRIES 

8 

(8) 

CHARACTER 

144 

SPCTENTS 

LSQA AND FIXED AND PAGEABLE-PAGE SPCT 
ENTRIES 


... 1 .... 

.... 1 ... 

.... . 1 .. 


SPCT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SPCT 

Data Area Descriptions 121 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


offsets _mi_MK G IH-N M E_ 

152 (98) CHARACTER 0 SPCTXEND 


DESCRIPTION 
END OF EXTENSION 


SPCT 

122 


MVS/370 Debug Hdbk Vol 5 


LC28-1389-0 (c) Copyright IBM Corp. 1980 


SPCT 

1985 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SPL 


Common Name : Service Priority List 
Macro ID : IHASPL 
DSECT Name : SPLENTRY 

Created by : Memory request and sysgen 
Subpool and Key : 245 and key 0 

Size : 16 bytes 

Pointed to by : CVTGSPL field of the CVT data area 
ASCBSPL field of the ASCB data area 
Serialization : Compare and Swap CCS) logic 

Function : Serves as queue anchors for the SRB dispatching queues; i.e., 
points to the non-quiesceable SRB queue and to the system SRB queue. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) 

STRUCTURE 

0 

SPLENTRY 


0 

(0) 

ADDRESS 

4 

SPLFSRB 

ADDRESS OF FIRST SRB 

4 

(4) 

ADDRESS 

4 

SPLLSRB 

ADDRESS OF LAST SRB 

GLOBAL 

SPL 






0 

(0) 

STRUCTURE 

n 

GSPL 


0 

(0) 

CHARACTER 

8 

GSPLNQ 

NON-QUIESCABLE LEVEL 

0 

(0) 

ADDRESS 

4 

GSPLNQF 

FIRST N0NQ SRB 

4 

(4) 

ADDRESS 

4 

GSPLNQL 

LAST NONQ SRB 

8 

(8) 

CHARACTER 

8 

GSPLSYS 

SYSTEM PRIORITY LEVEL 

8 

(8) 

ADDRESS 

4 

GSPLSYSF 

FIRST SYSTEM SRB 


SPL 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SPL 

Data Area Descriptions 123 
















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 

O NSET S_EtEE_ LENGTH NAME _ DESCRIPTION 


12 

(C) ADDRESS 

4 

GSPLSYSL 

LAST SYSTEM SRB 

16 

(10) ADDRESS 
•••1 •••• 

4 

GSPLEND 

GSPLSIZE 

END OF GSPL 

"GSPLEND-GSPL" SIZE OF GSPL 

LOCAL 

SPL 





0 

(0) STRUCTURE 

D 

LSPL 


0 

(0) CHARACTER 

8 

LSPLNQ 

NON-QUIESCEABLE LEVEL 

0 

(0) ADDRESS 

4 

LSPLNQF 

FIRST NONQ SRB 

4 

(4) ADDRESS 

4 

LSPLNQL 

LAST NONQ SRB 

8 

(8) CHARACTER 

8 

LSPLSYS 

SYSTEM PRIORITY LEVEL 

8 

(8) ADDRESS 

4 

LSPLSYSF 

FIRST SYSTEM SRB 

12 

(C) ADDRESS 

4 

LSPLSYSL 

LAST SYSTEM SRB 

16 

(10) ADDRESS 

4 

LSPLEND 

LSPLSIZE 

END OF LSPL 

"LSPLEND-LSPL" LSPL SIZE 


SPL 

124 


MVS/370 Debug Hdbk Vol 5 


SPL 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 














Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SPQE 


Common Name : VSM Subpool Queue Element 
Macro ID : IHASPQE 
DSECT Name : SPQE 

Created by s IGVGPVT, IGVSTSKI, IGVGAPVT 
Subpool and Key : 255 and key 0 

Size s 20 bytes 

Pointed to by : SPQENEXT, TCBMSS, TCBUKYSP, TCBSWA 
Serialization : LOCAL lock 

Function * Describes the space allocated to a subpool and the 
attributes of that space. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) STRUCTURE 

n 

SPQESECT 

SUBPOOL QUEUE ELEMENT 

0 

(0) SIGNED 

4 

SPQEAD 

ADDRESS OF NEXT OLDEST SPQE 




SPQEPTR 

"SPQEAD" 

4 

(4) SIGNED 

4 

SPDQEPTR 

POINTER TO FIRST DQE FOR SUBPOOL 


. 1 -- 


SPDQEAD 

"SPDQEPTR" 

8 

(8) BITSTRING 

1 

SPQEFLGS 

SPQE FLAGS 


1 ... .... 


SPSHARE 

"X'80*"0=SUBP00L OWNED 1=SUBP00L SHARED, 
NOT OWNED 


.1*. .... 


LASTSPQE 

"X‘40'"LAST SPQE ON CHAIN 


.. 1 . .... 


SPQE0WN 

"X'20'"0=SUBPOOL IS OWNED,NOT SHARED 
1=SUBP00L IS OWNED AND SHARED 

9 

(9) CHARACTER 

1 

SPQERES1 

RESERVED 

10 

(A) CHARACTER 

1 

SPQEID 

IDENTIFYING NUMBER OF SUBPOOL 

11 

(B) CHARACTER 

1 

SPQEKEY 

KEY OF THE OWNING TASK 

12 

(C) SIGNED 

4 

SPQERES2 

RESERVED 


SPQE 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SPQE 

Data Area Descriptions 125 







Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SRI 


Common Name : Service Request Block 
Macro ID : IHASRB 
DSECT Name : SRBSECT 

Created by : Control program routines 
Subpool and Key : 245 and key 0 

Size i 44 bytes 

Pointed to by : SVTGSPL field of the SVT data area 
SVTGSMQ field of the SVT data area 
SVTLSMQ field of the SVT data area 
ASCBLSMQ field of the ASCB data area 

ASCBLSPL field of the ASCB data area 

ASCBFSLQ field of the ASCB data area 

ASCBLSLQ field of the ASCB data area 

ASCBXMPQ field of the ASCB data area 

ASXBFSRB field of the ASXB data area 

ASXBLSRB field of the ASXB data area 

IOSSRB field of the IOSB data area 
PCBSRB field of the PCB data area 
SRBFLNK field of the SRB data area 
TQESRB field of the TQE data area 
TVCSSRBA field of the TVCS data area 

Serialization : SRBFLNK - Compare & Swap; all others - owner-serialized 
Function s The I/O supervisor uses the SRB to dispatch I/O processing for 
a request. It identifies the address space in which processing is to be 
done. Also used as input to the SCHEDULE macro when scheduling a 
routine for asynchronous execution. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) 

STRUCTURE 

H 

SRBSECT 


0 

(0) 

ADDRESS 

4 

SRB 


0 

(0) 

CHARACTER 

4 

SRBID 

EBCDIC ACRONYM FOR SRB OR SSRB. 

4 

(4) 

ADDRESS 

4 

SRBFLNK 

FORWARD CHAIN FIELD 


SRB 

126 


MVS/370 Debug Hdbk Vol 5 


SRB 

LC28-1389-0 Cc) Copyright IBM Corp. 1980, 1985 









Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


8 

(8) ADDRESS 

4 

SRBASCB 

PTR TO ASCB OF ADDRESS SPACE SRB IS TO 

BE DISPATCHED TO 

12 

(C) CHARACTER 

8 

SRBFLC 

SRB AREA MOVED TO LOW CORE 

12 

(C) BITSTRING 

2 

SRBCPAFF 

CPU AFFINITY MASK 

14 

(E) SIGNED 

2 

SRBPASID 

PURGEDQ ASID IDENTIFIER 

16 

(10) ADDRESS 

4 

SRBPTCB 

PURGEDQ TCB IDENTIFIER 

20 

(14) ADDRESS 

4 

SRBEP 

ENTRY POINT OF ROUTINE 

24 

(18) ADDRESS 

4 

SRBRMTR 

ADDRESS OF RESOURCE MGR RTN 

28 

(1C) ADDRESS 

4 

SRBPARM 

USER PARAMETER 

32 

(20) ADDRESS 

4 

SRBSAVE 

SAVE AREA POINTER 

36 

(24) BITSTRING 

1 

SRBPKF 

PROTECT KEY INDICATION 

37 

(25) BITSTRING 

1 

SRBPRIOR 

PRIORITY LEVEL INDIC 

37 

(25) BITSTRING 

1 

SRBFLGS 

SRB OPTION FLAGS 


1 • • « • • • • 


SRBLLREQ 

"X'80'" LOCAL LOCK REQUIRED 


• 1 • * •••• 


SRBLLHLD 

"X*40 ,n LOCAL LOCK HELD 


* « 1 < • • « » 


SRBFRREQ 

"X*20 ,n FRR REQUESTED 


• • ♦ 1 • « • • 


SRBFRRCL 

"X f 10»" THIS BIT IS OBSOLETE SINCE FRR 
PARM AREA ALWAYS CLEARED BY DISPATCHER. 
RETAINED FOR COMPATIBILITY. 


• X • • • 


SRBSUSP 

n X'08'" SUSPENDED SRB ONLY ON FOR SSRB 


• ••• « 1 • t 


SRBPNONQ 

"X*04'" NON QUIESCABLE SRB 


«• x • 


SRBCMLRQ 

"X'02 ,n SRB REPRESENTS A CML LOCK 

REQUEST OR LOCAL LOCK REQUEST DELAYED 

DUE TO A CML REQUEST. IF SRBSUSP=1, THIS 
SSRB REQUIRES A CML LOCK FOR ITS OWN 
PROCESSING. IF SRBSUSP=0 AND SRBLLREQ=0, 
THIS SRB WAS CREATED ON BEHALF OF A TASK 
REQUIRING A CML LOCK. IF SRBSUSP=0 AND 
SRBLLREQ=1, THIS DELAYED SRB HAS BEEN 
RESCHEDULED WITHOUT THE LOCAL LOCK DUE 

TO A CML LOCK REQUEST. 


• • • • • • • X 


SRBRES1 

"X'01 ,n RESERVED. 


SRB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SRB 

Data Area Descriptions 127 









Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


fiEES US _ TYPE LENGTH NAME _ DESCRIPTION 





SRBPSYS 

"X'OO'" SYSTEM PRIORITY LEVEL 

38 

(26) BITSTRING 

1 

SRBHLHI 

INDICATION OF SUSPEND 

LOCKS HELD AT SRB 





SUSPENSION 


39 

(27) BITSTRING 

1 

SRBFLGS1 

SRB TYPE FLAGS. 



X • • » •••• 


SRBMAIN 

n X'80 ,n SRB/SSRB MUST 

BE FREEMAINED. 


• 1 • • •••• 


SRBSP245 

"X'40'" SRB/SSRB FROM 

SUBPOOL 245. 


• •X* • • • • 


SRBRES2 

n X'20'" RESERVED. 



•••X •••• 


SRBRES3 

"X’lO*" RESERVED. 



• • • • 1 • • * 


SRBRES4 

"X*08 ,n RESERVED. 



• • X • • 


SRBRES5 

n X'04 ,n RESERVED. 



• ••« • •X • 


SRBRES6 

"X»02'« RESERVED. 



• ••« • • • 1 


SRBRES7 

"X'Ol*" RESERVED. 


40 

(28) ADDRESS 

4 

SRBFRRA 

FRR ROUTINE ADDRESS 


44 

(20 SIGNED 

4 

SRBEND 

END OF SRB 



..1. 11.. 


SRBSIZE 

"SRBEND-SRBSECT" SIZE 

OF SRB 


SRB 

128 


MVS/370 Debug Hdbk Vol 5 


SRB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SSAG 


Common Name : SSOB Extension for Allocation Grouping of SUBSYS 

Macro ID : IEFSSAG 

DSECT Name : SSAG 

Created by : IEFAB427 

Subpool and Key ! User subpool and key 

Size : 48 bytes 

Pointed to by : SSOBINDV field of the SSOB data area 
Serialization s None 

Function : Parameter list fo the subsystem interface. 

OFFSETS TYPE LENGTH NAME _DESCRIPTION 


0 

2 


* * *. . 1 .. 


.... 1 ... 


. 1 *. 

»*•* 1•«. 

_ 11 .. 

...1 . 1 .. 

...1 1 ... 


(0) ADDRESS 
(2) BITSTRING 
1... .... 

.1•• .... 

••1. 

...1 •.«» 

»##. 1.. . 

.... . 1 .. 


SSOBAGRP 

SSAGRTOK 

SSAGDDER 


SSAGGPER 


SSAGRQOK 

SSAGORUN 

SSAGSRUN 

SSAGIPRM 

SSAGIREQ 

SSAGCREQ 

SSAGSSER 

SSAGBGN 

2 SSAGLEN 
1 SSAGFLGS 
SSAGWAIT 
SSAGSMSG 

SSAGRSV1 

SSAGRSV2 

SSAGRSV3 

SSAGRSV4 


"39" GROUP SUBSYS REQUEST(SSOBFUNC) 

"0" ALL REQUESTS ALLOCATED 
"4" NO ALLOCATION-ONE OR MORE REQUESTS 
IN ERROR SSAGRBEC IS TO BE SET FOR THE 
REQUESTS IN ERROR 

"8" NO ALLOCATION-GROUP IN ERROR SSAGG- 
PEC IS TO BE SET AND SSAGRBEC MAY 
OPTIONALLY BE SET 
"0" REQUEST ALLOCATED 

"4" OPERATING SYSTEM RESOURCE NOT AVAIL¬ 
ABLE 

"8" SUBSYSTEM RESOURCE NOT AVAILABLE 
"12" INVALID PARAMETER SPECIFIED 
"16" INVALID REQUEST 
"20" CANCEL REQUESTED 
"24" SUBSYSTEM LOGIC ERROR 
"X" SSAG BEGINNING 

EXTENSION SIZE 
FLAG BYTE 

"X'80*" OK TO WAIT 

"X*40*" SUBSYSTEM TO RETURN ERROR MES¬ 
SAGES 

"X'20»" RESERVED FLAG 
"X'10>" RESERVED FLAG 
"X»08»" RESERVED FLAG 
"X'04'" RESERVED FLAG 


SSAG 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SSAG 

Data Area Descriptions 129 







Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 

.1. SSAGRSV5 "X'02' n RESERVED FLAG 

.1 SSAGRSV6 "X'Ol'" RESERVED FLAG 

3 C3) HEX 1 SSAGFLG2 RESERVED 

4 (4) SIGNED 2 SSAGGPEC GROUP(STEP) LEVEL ERROR CODE 

6 (6) SIGNED 2 SSAGGPIC GROUP(STEP) LEVEL INFO CODE 

8 (8) ADDRESS 4 SSAGARBP POINTER TO FIRST RB 

12 (C) ADDRESS 4 SSAGCNCL ADDRESS OF CANCEL ECB 

16 (10) ADDRESS 4 SSAGJBNM ADDRESS OF JOB NAME 

20 (14) ADDRESS 4 SSAGGMLN MAXIMUM LENGTH OF GROUP LEVEL MESSAGE 

24 (18) ADDRESS 4 SSAGGMGP ADDRESS OF GROUP LEVEL MSG BLOCK 

...1 11.. SSAGSIZE "K-SSAGBGN" SIZE OF EXTENSION HEADER 

..11 _ SSOBLN1B "SSOBHSIZ+SSAGSIZE" 


SSAG 

130 


MVS/370 Debug Hdbk Vol 5 


SSAG 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 







Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


Common Name s SSOB Extension for Allocation/Unallocation of SYSOUT 
Macro ID : IEFSSAL 
DSECT Name : SSAL 

Created by : IEFAB45F, IEFAB427, IEFAB4A2 
Subpool and Key i User subpool and key 
Size : 84 bytes 

Pointed to by : SSOBINDV field of the SSOB data area 
Serialization : None 

Function : Parameter list for the subsystem interface. 


OFFSETS 


TYPE 


LENGTH_ NAME 


DESCRIPTIO 


.11. SSOBALOC ”6" ALLOCATION FUNCTION ID (SSOBFUNC) 

.Ill SSOBUNAL ”7" UNALLOCATION FUNCTION ID (SSOBFUNC) 

. SSALRTOK ”0” ALLOCATION/UNALLOCATION SUCCESSFUL 

.1.. SSALWTFL "4" ALLOCATION WAIT FAILED 

_ 1... SSALCREQ "8" CANCEL REQUESTED 

_ 11.. SSALIDST "12" INVALID DESTINATION 

...1 _ SSALNAUT "16" USER UNAUTHORIZED TO ALLOCATE THIS 

DATA SET 

...1 .1.. SSALUNAL "20" UNABLE TO ALLOCATE 

. SSALB6N "X" 


0 (0) ADDRESS 

2 (2) BITSTRING 

1 ... .... 

. 1 .. .... 

.. 1 . .... 

...1 .... 

.... 1 ... 


2 SSALLEN 
1 SSALFLG1 
SSALDELT 
SSALHOLD 
SSALNHLD 
SSALWAIT 
SSALTRKM 


.1.. SSALSPIN 

.1. SSALASNM 


3 


(3) HEX 


SSALKEEP 

SSALRSV2 


ALLOC/UNALLOC EXTENSION LENGTH 
ALLOCATION/UNALLOCATION FLAGS 
"X'80'" DELETE AT UNALLOCATION 
"X'40‘" HOLD AT UNALLOCATION 
"X*20*" NOHOLD OPTION SPECIFIED 
"X'10'" WAIT FOR ALLOCATION 
"X'08'" ASSIGN A SEPARATE TRACK GROUP 
MAP 

"X'04'" SPIN OFF DATA SET 

"X'02*" DATA SET REQUIRES A DATA SET 

NAME 

"X'01*" SUBSYSTEM SHOULD KEEP THE DS 
RESERVED 


SSAL 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SSAL 

Data Area Descriptions 131 













Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SSARB 


Common Name J Subsystem Allocation Request Block 

Macro ZD : IEFSSARB 

DSECT Name : SSABARBK 

Created by : IEFAB427 

Subpool and Key : Subpool 230 and key 1 

Size : 60 bytes 

Pointed to by : SSA6NRBP field of the SSARB data area 
SSAGNRBP field of the SSOB data area 
Serialization : None 

Function : Contains the information needed by a subsystem to allocate 
a SUBSYS DD request or its equivalent dynamic allocation request. 

QEESETS_ HE! _ LENGTH NAME _ WSSStBJm 


0 

(0) 

STRUCTURE 

60 

SSAGARBK 

SSAG REQUEST BLOCK MAPPING 

0 

(0) 

SIGNED 

2 

SSAGRBLN 

REQUEST BLOCK LENGTH 

2 

(2) 

BITSTRING 

2 

SSAGRBFL 

RESERVED FLAGS 

4 

(4) 

SIGNED 

2 

SSAGRBEC 

DD RELATED ERROR CODE 

6 

(6) 

SIGNED 

2 

SSAGRBIC 

DD RELATED INFO CODE-DEFINED BY SUBSYS¬ 
TEM 

8 

(8) 

SIGNED 

2 

SSAGDMLN 

MAX LENGTH OF DD LEVEL MSG 

10 

CA) 

SIGNED 

2 


RESERVED 

12 

CC) 

ADDRESS 

4 

SSAGNRBP 

POINTER TO NEXT RB OR 0 

16 

(10) 

ADDRESS 

4 

SSAGDDNM 

POINTER TO DDNAME 

20 

(14) 

ADDRESS 

4 

SSAGDISP 

POINTER TO DATA SET DISP 

24 

(18) 

ADDRESS 

4 

SSAGDUMY 

POINTER TO DUMMY/SYSIN FLAGS 

28 

(1C) 

ADDRESS 

4 

SSAGS0UT 

POINTER TO SYS0UT FLAGS 

32 

(20) 

ADDRESS 

4 

SSAGUNIT 

POINTER TO UNIT TYPE 


SSARB 

134 


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SSARB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 











Contains Restricted Materials of IBM 
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OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


36 

(24) 

ADDRESS 

4 

SSAGADSP 

POINTER TO ALTERNATE DISP 



40 

(28) 

ADDRESS 

4 

SSAGSSNM 

POINTER TO SUBSYSTEM NAME 



44 

(20 

ADDRESS 

4 

SSAGJFCB 

POINTER TO JFCB 



48 

(30) 

ADDRESS 

4 

SSAGSSWA 

POINTER TO SSWA 



52 

(34) 

ADDRESS 

4 

SSAGSSCM 

POINTER TO INFO 



56 

(38) 

ADDRESS 

4 

SSAGDMGP 

POINTER TO DD LEVEL MESSAGE BLOCK 

0 

(0) 

STRUCTURE 

2 

SSAGDMBK 

DD LEVEL MESSAGE BLOCK 



0 

(0) 

SIGNED 

2 

SSAGDMGL 

LENGTH OF MESSAGE RETURNED 

BY 

SUBSYSTEM 

2 

(2) 

CHARACTER 

0 

SSAGDMSG 

DD LEVEL MESSAGE TEXT 



0 

(0) 

STRUCTURE 

2 

SSAGGMBK 

GROUP LEVEL MESSAGE BLK 



0 

(0) 

SIGNED 

2 

SSAGGMGL 

LENGTH OF MESSAGE RETURNED 

BY 

SUBSYSTEM 

2 

(2) 

CHARACTER 

0 

SSAGGMSG 

GROUP LEVEL MESSAGE TEXT 




SSARB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SSARB 

Data Area Descriptions 135 










Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SSAT 


Common Name : Sub System Affinity Table 
Macro ID : IHASSAT 
DSECT Name : SSAT 

Created by : IEAVBK (system-wide Null SSAT) and IEAVESS1 

Subpool and Key : Subpool 253, key 0 

Size : 80 decimal bytes 

Pointed to by : TCBSSAT 

Serialization : Local lock 

Function : Maps the Sub System Affinity Table for the SSAFF 
SET/OBTAIN service routine IEAVESSI. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) 

STRUCTURE 

80 

SSAT 


0 

(0) 

CHARACTER 

16 

SSATHDR 

SSAT HEADER BEGIN 

0 

(0) 

CHARACTER 

4 

SSATSSAT 

SSAT ACRONYM 

4 

(4) 

ADDRESS 

4 

SSATLNK 

PTR TO NEXT SSAT ON CHAIN 

8 

(8) 

SIGNED 

4 

SSATCT 

NUMBER OF VALID SUBSYSTEM INDICES THIS 
TABLE 

12 

(C) 

SIGNED 

4 

SSATHIDX 

HIGHEST INDEX FOR ALL TABLES 

16 

(10) 

CHARACTER 

64 

SSATENTS 

SUBSYSTEM ENTRY START 

80 

(50) 

CHARACTER 

0 

SSATEND 

SUBSYSTEM ENTRY 


SSAT 

136 


MVS/370 Debug Hdbk Vol 5 


LC28-1389-0 (c) Copyright IBM Corp 


1980, 


SSAT 

1985 










Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


Common Name : SSOB Extension for Common Allocation/JES3 Exit 

Macro ID : IEFSSCA 

DSECT Name : SSCA 

Created by : IEFAB422, IEFAB490 

Subpool and Key i User subpool and key 

Size s 52 bytes 

Pointed to by : SSOBINDV field of the SSOB data area 
Serialization : None 

Function J Parameter list for the subsystem interface. 


OFFSETS 


TYPE 


LENGTH NAME 


DESCRIPTION 


..1 1 . 




.. 1 . ... 

..11 .1 


SSOBCACD "24" COMMON ALLOCATION FUNCTION 

ID(SSOBFUNC) 

SSCAALCA "0" ALLOC SELECT RETURN CODE 

SSCAJESA "4" JES3 SELECT DEV RETURN CODE 

SSCAB6N "X" COMMON ALLOCATION BEGINNING 


0 

(0) 

ADDRESS 

2 

SSCALEN 

COMMON ALLOCATION EXTENSION SIZE 

2 

(2) 

SIGNED 

2 

SSCARSV0 

RESERVED 


4 

(4) 

ADDRESS 

4 

SSCAPSTN 

POINTER 

TO 

STEP NUMBER 

8 

(8) 

ADDRESS 

4 

SSCAPDDN 

POINTER 

TO 

DDNAME 

12 

CC) 

ADDRESS 

4 

SSCAPDSN 

POINTER 

TO 

DSNAME 

16 

(10) 

ADDRESS 

4 

SSCAPRPN 

POINTER 

TO 

RELATIVE POSITION NUMBER 

20 

(14) 

ADDRESS 

4 

SSCAPNUN 

POINTER 

TO 

NUMBER OF UNITS REQUIRED 

24 

(18) 

ADDRESS 

4 

SSCAPUAR 

POINTER 

TO 

UCB ADDRESS RETURN AREA 

28 

(1C) 

ADDRESS 

4 

SSCAPFLG 

POINTER 

TO 

FLAG FIELD 


SSCASIZE "X-SSCABGN" EXTENSION LENGTH 

SS0BLN11 "SS0BHSIZ+SSCASIZE" TOTAL SSOB LENGTH 


SSCA 

LC28-1389-0 Cc) Copyright IBM Corp. 1980, 


1985 


SSCA 

Data Area Descriptions 137 












Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SSCF 


Common Name t SSOB Extension for Failing SVC 34 Command 

Macro ID : IEFSSCF 

DSECT Name s SSCF 

Created by : IEE0803D 

Subpool and Key : User subpool and key 

Size : 36 bytes 

Pointed to by : SSOBINDV field of the SSOB data area 
Serialization : None 

Function * Parameter list for the subsystem interface. 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 



••X* 

• ••• • 1 * 1 


SSOBCFCD 

SSOBCFOK 

SSOBCFNO 

SSCFBGN 

"32" COMMAND FAIL FUNCTION (SSOBFUNC) 

"0" ISSUE SVC34 COMMAND ABORTED MESSAGE 
"4" SUPPRESS ISSUING SVC34 COMMAND 
ABORTED MESSAGE 
"X" SSFC BEGINNING 

0 

2 

(0) ADDRESS 
(2) SIGNED 

2 

2 

SSCFLEN 

SSCFRSVO 

SSFC EXTENSION LENGTH 

RESERVED 

4 

(4) ADDRESS 

4 

SSCFBFAD 

ADDRESS OF COMMAND BUFFER 

8 

(8) SIGNED 

4 

SSCFMRRC 

RETURN CODE FROM MEMORY REQUEST, OR CSCB 
CREATION FAILURE CODE 

MEMORY 

REQUEST RETURN CODES 

AND FAILURE 

CODES 


• ••• ilt* 

• ••• X *•« 

*»• • 1X« • 

• * 1 • •••• 


SSCFMROK 

SSCFSRMN 

SSCFNORS 

SSCFABND 

SSCFCSFL 

"0" MEMORY REQUEST SUCCESSFUL 
"4" SRM PROHIBITS ADDRESS SPACE CREATION 
"8" RESOURCES NOT AVAILABLE (INSUFFI¬ 
CIENT SQA OR NO ASID AVAILABLE) 

"12" UNEXPECTED ABEND IN MEMORY REQUEST 
"32" CSCB CREATION FAILURE CODE 

12 

(C) SIGNED 

4 

SSCFRSV1 

RESERVED 

SSCF 

138 

MVS/370 Debug 

Hdbk Vol 

SSCF 

5 LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 











Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 




SSCFSIZE "K-SSCFBGN" EXTENSION LENGTH 

SS0BLN16 "SSOBHSIZ+SSCFSIZE" TOTAL SSOB LENGTH 


SSCF 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SSCF 

Data Area Descriptions 139 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


ssci 


Common Name : SSOB Extension for SUBSYS Keyword Converter Exit 
Macro ZD : IEFSSCI 
DSECT Name : SSCI 
Created by : IEFVFA 

Subpool and Key : User subpool and key 
Size : 44 bytes 

Pointed to by : SSOBINDV field of the SSOB data area 
Serialization : None 

Function s Parameter list for the subsystem interface. 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 



..1. .11. 


SS0BC0NV 

"38" CONVERTER SUBSYS EXIT (SSOBFUNC) 


«••• # • • • 


SSCIRTOK 

"0" SUCCESSFUL SYNTAX CHECK 


• * • t • 1 « • 


SSCICMOD 

"4" SUCCESSFUL-INTERNAL TEXT MODIFIED 


• • • • 1 • • • 


SSCISYNC 

"8" SYNTATICAL ERROR CONTINUE JOB 


• ••• 11 • * 


SSCISYNT 

"12" SYNTATICAL ERROR TERMINATE JOB 


• • X • «l*i 


SSCIPERR 

"36" PROGRAM ERROR IN ROUTINE 


• • • • • « # 1 


SSCIBGN 

"X" CONVERTER EXTENSION BEGINNING 

0 

(0) ADDRESS 

2 

SSCILEN 

CONVERTER EXTENSION SIZE 

2 

(2) HEX 

1 

SSCIFLG1 

FLAGS RESERVED 

3 

(3) HEX 

1 

SSCIFLG2 

FLAGS RESERVED 

4 

(4) ADDRESS 

4 

SSCIINTP 

ADDRESS INTERNAL TEXT OF JCL STMT 

8 

(8) ADDRESS 

4 

SSCISUBS 

ADDRESS OF FIRST SUBSYS LEN/PARM 

12 

(C) SIGNED 

2 

SSCIMLEN 

MAX LENGTH OF MESSAGE 

14 

(E) SIGNED 

2 

SSCINPRM 

NUMBER OF LENGTH/PARM PAIRS IN SUBSYSTEM 
DATA 

16 

(10) ADDRESS 

4 

SSCIMPTR 

POINTER TO MESSAGE AREA 

20 

(14) CHARACTER 

4 

SSCISSNM 

SUBSYSTEM NAME 


...1 1... 


SSCISIZE 

"X-SSCIBGN" EXTENSION LENGTH 

SSCI 




SSCI 

140 

MVS/370 Debug Hdbk 

Vol 

5 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 











Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


.OF F S ET S_HP!_LgNGTH NAME_DESCRIPTION 


ERROR MESSAGE PROCESSING 

FIELD SSCIMPTR POINTS TO A MESSAGE AREA CREATED 
BY THE CALLER IN WHICH THE SUBSYSTEM IS TO RETURN 
ERROR MESSAGES. 

EACH MESSAGE AREA CONSISTS OF A 2 BYTE LENGTH FOLLOWED 
BY A MESSAGE TEXT AREA OF LENGTH DEFINED IN SSCIMLEN. 

A MESSAGE IS TO BE RETURNED WHEN A NON-ZERO SSOBRETN 
IS RETURNED BY THE SUBSYSTEM. 


. .1. 11.. SS0BLN19 "SSOBHSIZ+SSCISIZE" TOTOAL SSOB LENGTH 


SSCI 

LC28-1389-0 Cc) Copyright IBM Corp. 1980, 1985 


SSCI 

Data Area Descriptions 141 




Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SSCM 


Common Name J SSOB Extension for Command Processing Exit 

Macro ID : IEFSSCM 

DSECT Name : SSCM 

Created by : IEE0403D 

Subpool and Key : User subpool and key 

Size s 12 bytes 

pointed to by : SSOBINDV field of the SSOB data area 
Serialization : None 

Function : Parameter list for the subsystem interface. 


BEE-SETS_ HE! _ LENGTH NAME _ DESCRIPTION 


... 1 . 1 , 


• • • • 


. 1 .. 


1 ... 


SSOBCMND 

SSCMSCMD 

SSCMSUBC 

SSCMIMSG 

SSCMB6N 


"10" CMD PROCESSING FUNCTION ID (SS0B- 
FUNC) 

"0" SVC 34 SHOULD PROCESS THIS COMMAND 
"4" FUNCTION 10i SUBSYSTEM HAS PROCESSED 
THE COMMAND 

"8" FUNCTION 10i SUBSYSTEM COULD NOT 
EXECUTE THE COMMAND SVC 34 ISSUES MES¬ 
SAGE 
"x" 


0 

2 

3 

(0) ADDRESS 

(2) HEX 

(3) ADDRESS 

.1 

«••• » • • 1 

2 

1 

1 

SSCMLEN 

SSCMRESV 

SSCMVRSN 

SSCM132 

SSCMVRID 

COMMAND EXTENSION LENGTH 

RESERVED 

VERSION LEVEL 

"1" VERSION LEVEL FOR 0S/VS2 JBB1328 
"SSCM132" VERSION LEVEL VALUE 

4 

(4) ADDRESS 

4 

SSCMBUFF 

COMMAND BUFFER ADDRESS 

8 

(8) SIGNED 

•••« 11«» 

•••• 

4 

SSCMSCID 

SSCMSIZE 

SS0BLEN7 

COMMAND SOURCE CONSOLE ID OR 0 ASID OF 
TIME-SHARING USER CMD AUTHORITY OF INPUT 
STREAM 

"K-SSCMBGN" COMMAND EXTENSION LENGTH 
"SSOBHSIZ+SSCMSIZE" TOTAL SSOB LENGTH 


SSCM 

142 


MVS/370 Debug Hdbk Vol 5 


SSCM 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SSCS 


Common Name s SSOB Extension for Cancel/Status Function 
Macro ID : IEFSSCS 
DSECT Name : SSCS 

Created by : IKJEFF54, IKJEFF49, IKJEFF52 
Subpool and Key : User subpool and key 
Size : 60 bytes 

Pointed to by : SSOBINDV field of the SSOB data area 
Serialization : None 

Function : Parameter list for the subsystem interface. 
OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


. 1 . 

.11 


. 1 .. 
1 ... 
11 .. 


•. 1 ...» 

..1 . 1 .. 


...1 1 ... 

...1 11 .. 


SSOBCANC "2" CANCEL FUNCTION ID (SSOBFUNC) 

SSOBSTAT "3" JOB STATUS FUNCTION ID (SSOBFUNC) 

SSCSRTOK "0" CANCEL/STATUS COMPLETED 

SSCSNOJB "4" JOB NAME NOT FOUND 

SSCSBADI "8" INVALID JOBNAME/JOB ID COMBINATION 

SSCSNCAN "12" JOB NOT CANCELLED DUPLICATE JOB- 

NAMES AND NO JOB ID GIVEN 
SSCSMALL "16" STATUS ARRAY TOO SMALL 

SSCSOUTP "20" JOB NOT CANCELLED-JOB ON OUTPUT 

QUEUE 

SSCSYNTX "24" JOBID WITH INVALID SYNTAX FOR SYB- 

SYSTEM 

SSCSICAN "28" INVALID CANCEL REQUEST CANNOT CAN¬ 

CEL AN ACTIVE TSO USER OR STARTED TASK 
TSO USER MAY NOT CANCEL THE ABOVE JOBS 
UNLESS THEY ARE ON AN OUTPUT QUEUE. 


• * * 

. 


SSCSBGN 

"X" 


0 (0) 

ADDRESS 

2 

SSCSLEN 

CANCEL/STATUS 

EXTENSION LENGTH 

2 (2) 
1 .. 
. 1 . 

BITSTRING 

• * » « « 

• + • • # 

1 

SSCSFLGS 

SSCSUSID 

SSCSC0UT 

USER SELECTION 
"X'80'" USERID 
"X'40'" CANCEL 

FLAGS 

IS IN JOBNAME FIELD 

THE JOBS OUTPUT 

EQU X'3F' 


RESERVED FLAGS 




SSCS 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SSCS 

Data Area Descriptions 143 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH MAME _ DESCRIPTION 


3 

(3) 

HEX 

1 

SSCSULEN 

USERID LENGTH 



4 

(4) 

CHARACTER 

8 

SSCSJOBN 

JOB NAME 



12 

(C) 

CHARACTER 

8 

SSCSJOBI 

JOB ID OR BLANKS 



20 

(14) 

SIGNED 

2 

SSCSDIMP 

SET BY CALLER TO INDICATE 

SIZE OF 

ARRAY 






AVAILABLE TO SUBSYSTEM TO 

STORE RESULTS 






IN 



22 

(16) 

SIGNED 

2 

SSCSDIMR 

SET BY SUBSYSTEM TO INDICATE SIZE 

OF 


ARRAY USED, OR NEEDED IF NOT ENOUGH IS 
AVAILABLE 


SSCSARAY MAPS AN ELEMENT OF AN ARRAY GOTTEN BY THE CALLER FOR 
THE SUBSYSTEM TO RETURN RESULTS IN. IF MORE THAN ONE ELEMENT 
EXISTS, ADDRESSABILITY TO THIS ARRAY MUST BE UPDATED BY THE 
ELEMENT SIZE (SSCSELSZ). THE TOTAL ARRAY SPACE USED FOR JOB 
STATUS REPLIES FROM THE SUBSYSTEMCARRAY ELEMENT SIZE IN BYTES 
TIMES THE NUMBER OF ELEMENTS) MUST BE INDICATED IN SSCSDIMR. 
MESSAGES MUST FOLLOW THE LAST SSCSARAY ELEMENT USED FOR JOB 
STATUS. 







24 

(18) CHARACTER 

16 

SSCSARAY 

SSCSARBG 


24 

(18) CHARACTER 

8 

SSCSARID 

JOB IDENTIFIER 


32 


(20) BITSTRING 

1 SSCSFLG1 

1 • » • •••« 

SSCSJACT 


• 1 * • •••• 

SSCSEXCQ 

• • 1 • • • • • 

SSCSOUTQ 

• * • 1 • « • • 

SSCSHOLD 

• ••• 1 * • • 

SSCSSECL 


FLAGS SET BY SUBSYSTEM 

"X'80 ,n JOB IS CURRENTLY ACTIVE (EXECUT¬ 
ING AFTER BEING GIVEN CONTROL BY THE 
INITIATOR) 

"X'AO*" JOB IS WAITING FOR EXECUTION (ON 
A PRE-EXECUTION QUEUE) 
n X'20 ,n JOB IS ON OUTPUT QUEUE 
"X'lO*" JOB IS HELD IN ITS CURRENT QUEUE 
"X*08'" JOB HAS A SECOND LEVEL MESSAGE 


SSCS 

144 


MVS/370 Debug Hdbk Vol 5 


SSCS 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 









Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


EQU X*07' RESERVED FLAGS 


33 

(21) 

CHARACTER 

1 

SSCSUJOB 

JOBNAME CHARACTER RETURNED BY SUBSYSTEM 
FOR USERID AS JOBNAME 

34 

(22) 

CHARACTER 

2 

SSCSRSV2 

RESERVED 


36 (24) ADDRESS 4 SSCSMPTR POINTER TO MESSAGE RETURNED IN ARRAY 


THE SECOND LEVEL MESSAGE AREA IS MAPPED BY A MULTI-LEVEL PUTLINE 
OUTPUT LINE DESCRIPTOR (OLD). THE FIRST 9 BYTES OF THE FIRST OR 
ONLY MESSAGE SEGMENT ARE RESERVED FOR THE INSERTION OF A MESSAGE 
ID BY THE CALLER. ONE TO 62 BYTES OF MESSAGE TEXT MAY BE PROVIDED 
BY THE SUBSYSTEM. A MAPPING OF THE OLD FORMAT NEEDED FOLLOWS. 
SSCSMPTR -> ONE TSO PUTLINE OUTPUT LINE DESCRIPTOR (OLD) 

+0 0 (NO OTHER OLD) 

+4 NUMBER OF MESSAGE SEGMENTS 
+8 PTR TO FIRST MESSAGE SEGMENT 
+. PTR TO NTH MESSAGE SEGMENT 

MESSAGE SEGMENT FORMAT. 

+0 TOTAL LENGTH OF MSG SEGMENT (INCLUDING THIS FIELD) 

+2 0 IF FIRST SEGMENT, OR OFFSET FOR INSERT IN FIRST 
+4 10 BLANKS FOR MSG ID (ONLY IN FIRST SEGMENT) 

+D MESSAGE TEXT (1-62 BYTES TOTAL FOR ALL SEGMENTS) 


• ••1 • • • • 

SSCSELSZ 

"X-SSCSARAY" ARRAY 

ELEMENT SIZE 

.«1» X • • • 

SSCSIZE 

"X-SSCSBGN" CANCEL/STATUS EXTENSION 



LENGTH 


..11 11.. 

SS0BLEN2 

"SSOBHSIZ+SSCSIZE" 

TOTAL SSOB LENGTH 


sscs 

LC28-1389-0 (c) Copyright IBM Corp 


1980, 


1985 


SSCS 

Data Area Descriptions 145 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SSCU 


Common Name : SSOB Extension for Common Unallocation/JES3 Exit 

Macro ID : IEFSSCU 

DSECT Name : SSCU 

Created by : IEFAB4A0 

Subpool and Key s User subpool and key 

Size : 44 bytes 

Pointed to by : SSOBINDV field of the SSOB data area 
Serialization : None 

Function : Parameter list for the subsystem interface. 

OEESHS_HEI_ LENGTH NAME _ DESCRIPTION 


...1 1..1 SSOBCUCD "25" COMMON UNALLOCATION FUNCTION 

ID(SSOBFUNC) 

. SSCUBGN "X" COMMON UNALLOCATION BEGINNING 


0 

(0) ADDRESS 

2 

SSCULEN 

COMMON UNALLOCATION EXTENSION 

LENGTH 

2 

(2) BITSTRING 

1 

SSCUFLGS 

COMMON UNALLOCATION FLAGS 



1. 


SSCULSCL 

"X'80'" THIS IS THE LAST CALL 

FOR THE 





STEP, SET ON FOR EACH DD BEING 
CATED AT STEP UNALLOCATION 

UNALLO- 


.111 1111 


SSCURSVF 

"X'7F f " RESERVED FLAGS 


3 

(3) HEX 

1 

SSCURSVO 

RESERVED 


4 

(4) ADDRESS 

4 

SSCUPSTN 

POINTER TO STEP NUMBER 


8 

(8) ADDRESS 

4 

SSCUPDDN 

POINTER TO DDNAME 


12 

(C) ADDRESS 

4 

SSCUPRPN 

POINTER TO RELATIVE POSITION NUMBER 

16 

(10) SIGNED 

4 

SSCURSV2 

RESERVED 


20 

(14) SIGNED 

4 

SSCURSV1 

RESERVED 



...1 1... 


SSCUSIZE 

"X-SSCUBGN" EXTENSION LENGTH 



..1. 11.. 


SS0BLN12 

"SSOBHSIZ+SSCUSIZE" TOTAL SSOB 

LENGTH 


SSCU 

146 


MVS/370 Debug Hdbk Vol 5 


SSCU 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SSCVT 


Common Name : Subsystem Communications Vector Table 

Macro ID : IEFJSCVT 

DSECT Name : SSCT 

Created by : IEFJSBLD 

Subpool and Key : 241 and key 0 

Size : 36 bytes 

Pointed to by : JESSSCT field of the JESCT data area (first SSCVT) 
SSCTSCTA field of the SSCVT data area (next SSCVT) 

SSCTSYN field of the SSCVT data area (next SSCVT 
that has same subsystem hash value as this SSCVT) 
Serialization : None 

Function : Identifies each subsystem defined to the system and points to 
the SSVT for each subsystem. 

OFFSETS TYPE LENGTH NAME_DESCRIPTION 


0 

(0) STRUCTURE 

0 

SSCT 

SSCTBEGN 

"X" 

0 

(0) CHARACTER 

4 

SSCTID 

CONTROL BLOCK IDENTIFIER 

4 

(4) ADDRESS 

4 

SSCTSCTA 

PTR TO NEXT SSCVT OR ZERO 

8 

(8) CHARACTER 

4 

SSCTSNAM 

SUBSYSTEM NAME 

12 

(C) BITSTRING 

1 

SSCTFLG1 

FLAGS 


1. 


SSCTSFOR 

"X'80"* SERIAL FIB OPERATIONS REQUIRED 


- 1 . 


SSCTUPSS 

n X'40USE PRIMARY SUBSYSTEM'S SERVICES 
FOR THIS SUBSYSTEM (E.G. SYSOUT) 

13 

(D) HEX 

1 

SSCTRSVK3) 

RESERVED 

16 

(10) ADDRESS 

4 

SSCTSSVT 

SUBSYSTEM VECTOR TABLE POINTER 

20 

(14) SIGNED 

4 

SSCTSUSE 

RESERVED FOR SUBSYSTEM USAGE 

24 

(18) ADDRESS 

4 

SSCTSYN 

HASH TABLE SYNONYM POINTER 


SSCVT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SSCVT 

Data Area Descriptions 147 











Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ 

28 (1C) SIGNED 4 SSCTSUS2 


32 (20) SIGNED 4 SSCTRSV3 

..1. .1.. SSCTSIZE 


DESCRIPTION 

RESERVED FOR SUBSYSTEM USAGE 


RESERVED 

"X-SSCTBEGN" SSCVT LENGTH 


SSCVT 

148 


MVS/370 Debug Hdbk Vol 5 


SSCVT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SSDA 


Common Name : SSOB Extension for OPEN/CLOSE, Checkpoint/Restart 

Macro ID : IEFSSDA 

DSECT Name : SSDA 

Created by : IGG0193K 

Subpool and Key : User subpool and key 

Size : 28 bytes 

Pointed to by : SSOBINDV field of the SSOB data area 
Serialization : None 

Function J Parameter list for the subsystem interface. 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 



...1 _ 


SS0B0PEN 

"16" OPEN FUNCTION ID 



...1 ...1 


SS0BCL0S 

"17" CLOSE FUNCTION ID 



...1 .. 1 . 


SSOBCKPT 

"18" CHECKPOINT FUNCTION ID 



...1 ..11 


SSOBREST 

"19" RESTART FUNCTION ID 



. 1 . . 


SSDMOK 

SSDMFAIL 

"0" REQUEST SUCCESSFUL 
"4" REQUEST UNSUCCESSFUL 





SSDABGN 

"X" 


0 

(0) ADDRESS 

2 

SSDALEN 

0/C, C/R EXTENSION LENGTH 


2 

(2) HEX 

1 

SSDAVER 

MACRO VERSION NUMBER 


3 

(3) BITSTRING 

1 

SSDARESF 

RESTART FLAGS 



1 . 


SSDAAUTO 

"X'80»" AUTO CHECKPOINT RESTART 



. 


SSDADEFR 

"X*40‘" DEFERRED CHECKPOINT RESTART 


4 

(4) ADDRESS 

4 

SSDABUFR 

4K BUFFER POINTER GOTTEN BY CHECKPT 

AND 





RESTART, USED BY SUBSYSTEM OR 256 BYTE 





BUFFER POINTER GOTTEN BY OPEN, USED 
SUBSYSTEM FOR OPEN VERIFICATION 

BY 

8 

(8) ADDRESS 

4 

SSDAJFCB 

JFCB POINTER 


12 

(C) ADDRESS 

4 

SSDADEBP 

DEB POINTER 


16 

(10) ADDRESS 

4 

SSDASSCM 

POINTER TO SUBSYSTEM INFORMATION 


20 

(14) ADDRESS 

4 

SSDADSAB 

DSAB POINTER 


SSDA 





SSDA 

LC28-1389-0 (c) Copyright 

IBM 

Corp. 1980/ 

1985 Data Area Descriptions 

149 














Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS 


LENGTH NAME 


.DESCRIPTION 


24 (18) BITSTRING 1 SSDAOCFL OPEN/CLOSE FLAGS 

1. SSDAOPNV "X'SO*" OPEN VERIFICATION 

25 (19) CHARACTER 3 SSDARSV2 RESERVED 

...1 11.. SSDASIZE "X-SSDABGN" O/C.C/R EXTENSION LENGTH 

..11 _ SSOBLENC "SSOBHSIZ+SSDASIZE" TOTAL SSOB LENGTH 

.1. SSDACVER "2" CURRENT VERSION NUMBER 


SSDA 

150 


MVS/370 Debug Hdbk Vol 5 


SSDA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SSDD 


Common Name s SSOB Extension for Change DDname/JES3 Exit 

Macro ZD : IEFSSDD 

DSECT Name : SSDD 

created by : IEFDB4FB 

Subpool and Key : User subpool and key 

Size : 36 bytes 

Pointed to by : SSOBINDV field of the SSOB data area 
Serialization : None 

Function : Parameter list for the subsystem interface. 


OFESEJS_ TYPE LENGTH NAME _ DESCRIPTION 



...1 1.1. 


SSOBDDCD 

SSDDBGN 

”26" CHANGE DDNAME FUNCTION ID(SSOBFUNC) 
CHANGE DDNAME BEGINNING 

0 

(0) ADDRESS 

2 

SSDDLEN 

CHANGE DDNAME EXTENSION LENGTH 

2 

(2) SIGNED 

2 

SSDDRSVO 

RESERVED 

4 

(4) SIGNED 

4 

SSDDNUMB 

NUMBER OF CHANGED DDNAMES 

8 

(8) ADDRESS 

4 

SSDDNPTR 

POINTER TO DDNAME INFO 

12 

(C) SIGNED 
• ••X ••« * 

.. 1. • X • • 

4 

SSDDRSV1 

SSDDSIZE 

SS0BLN13 

RESERVED 

"X-SSDDBGN" EXTENSION LENGTH 
"SSOBHSIZ+SSDDSIZE" TOTAL SSOB LENGTH 


SSDD 

LC28-1389-0 (c) Copyright IBM Cor-». 1980, 1985 


Data Area Descriptions 


SSDD 

151 







Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SSDM 


Common Name ! SSOB Extension for Delete Operator Messages 
Macro ID : IEFSSDM 
DSECT Name : SSDM 

Created by : IEAVXDOM, IEAVMDOM, IEAVMED2 
Subpool and Key : User subpool and key 
Size : 28 bytes 

Pointed to by : SSOBINDV field of the SSOB data area 
Serialization : None 

Function s Parameter list for the subsystem interface. 



TYPE 

LENGTH 

NAME 

DESCRIPTION 


_111. 


SS0BD0M 

SSDMBGN 

"14" DOM FUNCTION ID (SSOBFUNC) 

"X" 

0 

(0) ADDRESS 

2 

SSDMLEN 

DOM EXTENSION LENGTH 

2 

(2) SIGNED 

2 

SSDMRESV 

RESERVED 

4 

(4) ADDRESS 

...1 11.. 

4 

SSDMDMCB 

SSDMSIZE 

SSOBLENA 

DOM CONTROL BLOCK ADDRESS 
"X-SSDMBGN" DOM EXTENSION LENGTH 
"SSOBHSIZ+SSDMSIZE" TOTAL SSOB LENGTH 


SSDM SSDM 

152 MVS/370 Debug Hdbk Vol 5 LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 





Contains Restricted Materials of IBM 
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SSDR 


Common Name : SSOB Extension for Dynamic Device Reconfiguration 
Macro ID : IEFSSDR 
DSECT Name : SSDR 
Created by : IGFDIO 

Subpool and Key : User subpool and key 
Size : 36 bytes 

Pointed to by : SSOBINDV field of the SSOB data area 
Serialization : None 

Function J Parameter list for the subsystem interface. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


...1 

11. . 

SS0BDDR1 

"28" DDR DEVICE CANDIDATE SELECTION 
FUNCTION 

...1 

11.1 

SS0BDDR2 

"29" DDR DEVICE CANDIDATE VERIFICATION 
FUNCTION 

...1 

111. 

SS0BDDR3 

"30" DDR UCB SWAP NOTIFICATION FUNCTION 

.. .1 

1111 

SS0BDDR4 

"31" DDR SWAP COMPLETION FUNCTION 

• • • • 

♦ ft ♦ ft 

SSDR1EDL 

"0" LIST OF ELIGIBLE DEVICES IS RETURNED 

« 1 « # 

.1.. 

SSDR1IDL 

"4" LIST OF INELIGIBLE DEVICES IS 
RETURNED 

• • • • 

1. .. 

SSDR1N0L 

"8" NO LIST RETURNED, NO MORE DEVICES 
ELIGIBLE 

• • • • 

ft ft ft ft 

SSDR2ED 

"0" CANDIDATE IS AN ELIGIBLE DEVICE 

• • ft • 

.1. . 

SSDR2ID 

”4" CANDIDATE IS AN INELIGIBLE DEVICE 

ft ft ft ft 

• ft ft ft 

SSDRBGN 

"X" SSDR BEGINNING 


0 

(0) ADDRESS 

2 

SSDRLEN 

SSDR EXTENSION LENGTH 

2 

(2) BITSTRING 

1 

SSDRFLG1 

SSDR FLAG BYTE FUNCTION 182 

3 

(3) BITSTRING 

1 

SSDRFLG2 

SSDR FLAG BYTE FUNCTION 384 


.... 1 ... 


SSDR4SWP 

"X*08 ,n FOR FUNCTION SS0BDDR4 ONLY IF ON 
SWAP SUCCESSFUL IF OFF SWAP UNSUCCESSFUL 

4 

(4) ADDRESS 

4 

SSDRSFRU 

POINTER TO SWAP FROM UCB 

8 

(8) ADDRESS 

4 

SSDRSTOU 

POINTER TO SWAP TO UCB 

12 

(C) ADDRESS 

4 

SSDRUCBL 

POINTER TO JES3 UCB LIST <1/2 WORDS FOL- 


LOWED BY X'FFFF') 


SSDR 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SSDR 

Data Area Descriptions 153 







Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


. OF FSETS_IYEE_ LENGTH NAME _BESE BI E H S M 



SSDRSIZE "X-SSDRBGN" EXTENSION LENGTH 

SS0BLN15 "SSOBHSIZ+SSDRSIZE" TOTAL SSOB LENGTH 


SSDR 

154 


MVS/370 Debug Hdbk Vol 5 


LC28-1389-0 (c) Copyright IBM Corp. 1980, 


SSDR 

1985 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SSEN 


Common Name : SSOB Extension for End of Memory 

Macro ID : IEFSSEN 

DSECT Name : SSEN 

Created by : IEFJRECM 

Subpool and Key : User subpool and key 

Size : 36 bytes 

Pointed to by : SSOBINDV field of the SSOB data area 
Serialization : None 

Function • Parameter list for the subsystem interface. 


OFFSETS 

TYPE LENGTH 

NAME 

DESCRIPTION 


• ••• X *•* 


SS0BE0M 

SSENBGN 

"8" EOM FUNCTION ID CSSOBFUNC) 

"X" 

0 

(0) ADDRESS 

2 

SSENLEN 

EOM EXTENSION LENGTH 

2 

(2) SIGNED 

2 

SSENRESV 

RESERVED 

4 

(4) SIGNED 

2 

SSENASID 

ASID OF TERMINATING MEMORY 

6 

(6) BITSTRING 

1 . . . •••• 

1 

SSENFLAG 

SSENTYPE 

END OF MEMORY FLAGS 

"X*80 ,w ON ABNORMAL MEMORY TERMINATION 
OFF- NORMAL MEMORY TERMINATION 

7 

(7) HEX 

1 

SSENRSV1 

RESERVED 

8 

(8) ADDRESS 

4 

SSENJBNM 

JOBNAME LIST POINTER EACH JOBNAME ENTRY 
IS 12 BYTES 1ST 4 BYTES PTR TO NEXT JOB- 
NAME ENTRY (LAST ENTRY CONTAINS ZEROS IN 
1ST 4 BYTES) LAST 8 BYTES JOBNAME ASSO¬ 
CIATED WITH TERMINATING MEMORY 

12 

CC) ADDRESS 

• • «X • • • « 

* • 1 « • 1 • • 

4 

SSENASCB 

SSENSIZE 

SS0BLEN5 

ASCB ADDRESS OF TERMINATING MEMORY 
"K-SSENBGN" EOM EXTENSION LENGTH 
"SSOBHSIZ+SSENSIZE" TOTAL SSOB LENGTH 


SSEN 

LC28-1389-0 (c) Copyright IBM Corp. 1980 


1985 


SSEN 

Data Area Descriptions 155 







ContainsvRestricted Materials of IBM 
Licensed Materials - Property of IBM 


SSET 


Common Name : SSOB Extension for End of Task 

Macro ID : IEFSSET 

DSECT Name : SSET 

Created by : IEFJRECM, IEFJRECF 

Subpool and Key : User subpool and key 

Size : 36 bytes 

Pointed to by : SSOBINDV field of the SSOB data area 
Serialization : None 

Function s Parameter list for the subsystem interface. 


OFFSETS 

TYPE 

LENGTH 

NAME 

DESCRIPTION 


.... .1.. 

..11 ..1. 


SSOBEOT 

SS0BFE0T 

SSETBGN 

"4" EOT FUNCTION ID (SSOBFUNC) 

"50" EOT FUNCTION ID (SSOBFUNC) 

"X" 

0 

(0) 

ADDRESS 

2 

SSETLEN 

EOT EXTENSION LENGTH 

2 

(2) 

SIGNED 

2 

SSETRSVO 

RESERVED 

4 

(4) 

SIGNED 

2 

SSETASID 

ASID OF MEMORY IN HHICH TASK WAS ACTIVE 

6 

(6) 
1.. 

BITSTRING 1 

SSETFLAG 

SSETYPE 

END OF TASK FLAGS 

"X'80'" ON ABNORMAL TASK TERMINATION 

OFF- NORMAL TASK TERMINATION 

7 

(7) 

HEX 

1 

SSETRSV1 

RESERVED 

8 

(8) 

ADDRESS 

4 

SSETCBA 

ADDRESS OF TERMINATING TCB 

12 

(C) 

. .1 

ADDRESS 

X • • •« 

• • X • • 

4 

SSETASCB 

SSETSI2E 

SSOBLEND 

ASCB ADDRESS OF TERMINATING TASK'S MEMO¬ 
RY 

"X-SSETBGN" EOT EXTENSION LENGTH 
"SSOBHSIZ+SSETSIZE" TOTAL SSOB LENGTH 


SSET 

156 


MVS/370 Debug Hdbk Vol 5 


SSET 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 






Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SSIB 


Common Name : Subsystem Identification Block 
Macro ID : IEFJSSIB 
DSECT Name : SSIB 

Created by : Many users CIEFIIC, IEEOA03D, IEE0803D, IEAVSWCH,...) 
Subpool and Key : User subpool and key 
Size : 36 bytes 

Pointed to by : JSCBSSIB field of the JSCB data area 
SSOBSSIB field of the SSOB data area 
Serialization : None 

Function : Identifies the subsystem to the subsystem interface and 
passes information between the subsystem and its caller. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) 

STRUCTURE 

• • t t • 

0 

SSIB 

SSIBEGIN 



0 

(0) 

CHARACTER 

A 

SSIBID 

CONTROL BLOCK IDENTIFIER 


A 

(A) 

ADDRESS 

2 

SSIBLEN 

SSIB LENGTH 


6 

(6) 
1.. 

.1. 

BITSTRING 

» • • • • 

• « « • • 

1 

SSIBFLG1 

SSIBPJES 

SSIBNSVC 

FLAGS 

W X'80 ,n THIS SSIB IS USED 
JOB ENTRY SUBSYSTEM 
n X*A0NO SVC INDICATOR 

TO START THE 

7 

(7) 

HEX 

1 

SSIBRESV 

RESERVED 


8 

(8) 

CHARACTER 

A 

SSIBSSNM 

SUBSYSTEM NAME 


12 

(C) 

CHARACTER 

8 

SSIBJBID 

JOB IDENTIFIER 


20 

CIA) 

CHARACTER 

8 

SSIBDEST 

DEFAULT USERID FOR SYSOUT 

DESTINATION 

28 

(1C) 

SIGNED 

A 

SSIBRSV1 

RESERVED 


32 

(20) 

. .1 

SIGNED 
. .1.. 

A 

SSIBSUSE 

SSIBSIZE 

RESERVED FOR SUBSYSTEM USAGE 
"X-SSIBEGIN" SSIB LENGTH 


SSIB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SSIB 

Data Area Descriptions 157 










Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SSJS 


Common Name S SSOB Extension for Job Select 

Macro ID : IEFSSJS 

DSECT Name : SSJS 

Created by : IEFSD161 

Subpool and Key s User subpool and key 

Size : 74 bytes 

Pointed to by : SSOBINDV field of the SSOB data area 
Serialization : None 

Function : Parameter list for the subsystem interface. 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 



.1.1 


SSOBJBSL 

"5" JOB SELECTION FUNCTION ID (SSOBFUNC) 


«••• • 1 • • 


SSJSRTOK 

SSJSISTP 

"0" OK-JOB HAS BEEN SELECTED 
"4" INITIATOR SHOULD STOP 


« • • 1 * « » * 


SSJSYSER 

"16" SYSTEM ERROR OCCURRED DURING SUB¬ 
SYSTEM PROCESSING SYSTEM ERROR CODE IS 

IN SSJSSERR 


••X* •X•• 


SSJSPERR 

"36" PROGRAM ERROR 




SSJSBGN 

"X" 

0 

(0) ADDRESS 

2 

SSJSLEN 

JOB SELECT EXTENSION LENGTH 

2 

(2) HEX 

1 

SSJSVER 

VERSION NUMBER OF SSJS 


• ••• • « 1 1 


SSJSCVER 

"3" CURRENT VERSION NUMBER OF SSJS 

3 

(3) CHARACTER 

1 

SSJSRESV 

RESERVED 

4 

(4) SIGNED 

2 

SSJSSTEP 

. STEP NUMBER OR ZERO 

6 

(6) BITSTRING 

1 

SSJSFLG1 

JOB DESCRIPTOR BITS 


1. 


SSJSSTRS 

"X'80*" STEP RESTART 


.1. 


SSJSCHRS 

"X'40»" CHECKPOINT/RESTART 


..1. 


SSJSCNRS 

"X*20CONTINUE RESTART 


...1 _ 


SSJSRSV1 

"X*10»" RESERVED 


_ 1... 


SSJSWARM 

"X» 08WARM START THE JOB 


.1.. 


SSJSAIFG 

"X*04ALTERNATE INTERPRETER FLAG IF ON 
SELECT INTERPRETER ADDRESS FROM SSJSAIAD 
FIELD 


.... ..11 


SSJSRSV2 

"X'03 ,n RESERVED 

7 

(7) BITSTRING 

1 

SSJSFLG2 

FLAGS 

SSJS 




SSJS 

158 

MVS/370 Debug Hdbk 

Vol 

5 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 











f 


Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LEM6TH NAME _ DESCRIPTION 



1 • • • •••« 


SSJSBYPS 

n X'80 ,n BYPASS PASSWORD CHECKING 


• 1 • • « • • « 


SSJSXBM 

"X'40 ,n XBM 

8 

(8) ADDRESS 

4 

SSJSLCT 

LCT ADDRESS 

12 

(C) ADDRESS 

4 

SSJSMACB 

MESSAGE ACB ADDRESS 

16 

(10) ADDRESS 

4 

SSJSJACB 

JOURNAL ACB ADDRESS 

20 

(14) ADDRESS 

4 

SSJSTACB 

INTERNAL TEXT ACB ADDRESS 

24 

(18) ADDRESS 

4 

SSJSIPRM 

ADDRESS OF PARAMETER FOR PHASE TWO OF 

THE INTERPRETER 

28 

(1C) ADDRESS 

4 

SSJSJMR 

JMR ADDRESS 

32 

(20) SIGNED 

4 

SSJSSERR 

SYSTEM ERROR RETURN CODE FROM CONVERTER 
OR SWA CREATE 

36 

(24) SIGNED 

4 

SSJSAIAD 

ALTERNATE INTERPRETER ADDRESS 

40 

(28) CHARACTER 

9 

SSJSPASS 

SECURITY FIELD 

40 

(28) HEX 

1 

SSJSPSLN 

PASSWORD LENGTH 

41 

(29) CHARACTER 

8 

SSJSPSWD 

SECURITY PASSWORD 

49 

(31) CHARACTER 

9 

SSJSPAS2 

NEW PASSWORD FIELD 

49 

(31) HEX 

1 

SSJSPSL2 

NEW PASSWORD LENGTH 

50 

(32) CHARACTER 

8 

SSJSPSW2 

NEW PASSWORD 

58 

(3A) CHARACTER 

8 

SSJSCLSS 

JES3 JOB CLASS 

66 

(42) CHARACTER 

8 

SSJSJDVT 

JCL DEFINITION VECTOR TABLE NAME 

74 

(4A) CHARACTER 

8 

SSJSUSER 

PROPAGATED USERID 

82 

(52) CHARACTER 

8 

SSJSGRP 

PROPAGATED GROUPID 


.1.1 1.1. 


SSJSIZE 

"X-SSJSBGN" JOB SELECT EXTENSION LENGTH 


.11. 111. 


SS0BLEN3 

"SSOBHSIZfSSJSIZE" TOTAL SSOB LENGTH 


SSJS 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SSJS 

Data Area Descriptions 159 













Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SSJT 


Common Name : SSOB Extension for Job Deletion 

Macro ZD : IEFSSJT 

DSECT Name : SSJT 

Created by : IEFSD166 

Subpool and Key : User subpool and key 

Size : 44 bytes 

Pointed to by : SSOBINDV field of the SSOB data area 
Serialization : None 

Function : Parameter list for the subsystem interface. 


OFFSETS TYPE _ LENGTH NAME _ DESCRIPTION 



ll** 


SSOBTERM 

"12" JOB DELETION FUNCTION ID (SSOBFUNC) 


• » 1 • • 1 * » 


SSJTPERR 

"36" PROGRAM ERROR 




SSJTBGN 

"X" 

0 

(0) ADDRESS 

2 

SSJTLEN 

JOB DELETION EXTENSION LENGTH 

JOB STATUS INFORMATION 

2 

(2) BITSTRING 

1 

SSJTFLG1 

JOB STATUS FLAGS 


X • • • •••• 


SSJTJFAL 

"X'80 ,n JOB FAILED INDICATOR 


• X•• •••• 


SSJTCFAL 

"X*40*" JOB FAILED BECAUSE OF CONDITION 
CODE 


• • 1 • •••• 


SSJTABND 

"X'20'" JOB ABENDED (JCTABEND=ON) 

3 

(3) BITSTRING 

1 

SSJTRSV1 

RESERVED 

4 

(4) ADDRESS 

4 

SSJTJMR 

JMR ADDRESS 

8 

(8) SIGNED 

4 

SSJTPCOD 

PTR TO THE 2 BYTE CONDITION CODE OR ZERO 

12 

(C) SIGNED 

4 

SSJTPSN1 

PTR TO THE STEPNAME OF THE ABENDING STEP 
IF JOB ABENDED OR ZERO 


SSJT 

160 


MVS/370 Debug Hdbk Vol 5 


SSJT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 











Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LEMSTH NAj? 


16 (10) SIGNED 


4 SSJTPSN2 


ASCRIPTION 


PTR TO THE STEPNAME OF THE STEP WHICH 
CALLED THE PROC ANY OR ZERO 


20 (14) SIGNED 4 SSJTSNUM PTR TO THE NUMBER OF THE LAST STEP TO 

COMPLETE EXECUTION. 

...1 1... SSJTSIZE "X-SSJTBGN" JOB DELETION EXTENSION 

LENGTH 

..1. 11.. SSOBLENB "SSOBHSIZ+SSJTSIZE" TOTAL SSOB LENGTH 


SSJT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SSJT 

Data Area Descriptions 161 




Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SSMO 


Common Name : SSOB Extension for MSS Volume Control/JES3 Exit 

Macro ID : IEFSSMO 

DSECT Name : SSMO 

Created by : ICBVSLOO 

Subpool and Key : User subpool and key 

Size S 48 bytes 

pointed to by : SSOBINDV field of the SSOB data area 
Serialization : None 

Function : Parameter list for the subsystem interface. 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 



.. 1 . ..11 


SSOBMSVC 

"35" MSS VOLUME CONTROL FUNCTION 
ID(SSOBFUNC) 


.. 1 . .1.1 


SS0B0E0V 

"37" 0PEN/E0V FUNCTION ID(SSOBFUNC) 


• ••• • 1 * • 


SSMOVOLA 

SSM0V0LB 

"0" VOLUME AVAILABLE RETURN CODE 
"4" VOLUME BUSY RETURN CODE 




SSMOBGN 

"X" MSS VOLUME CONTROL BEGINNING 

0 

(0) ADDRESS 

2 

SSMOLEN 

MSS VOL CNTR EXTENSION SIZE 

2 

(2) HEX 

1 

SSM0FLG1 

SSMO FLAG BYTE 


X • • • • » • • 


SSM00PEN 

"X*80*" SSI INVOKED BY OPEN 


• X • • 


SSMOFINL 

"X'40 ,n FINAL CALL FROM 0PEN/E0V 


• • X • •* * » 


SSMOSCR 

"X'20'" DADSM SCRATCH IF ON 


•••X 


SSMORUSE 

"X*10'" JES3 SHOULD TRY FOR VOLUME REUSE 
AND SNITCH SGD'S IF NEEDED 


• • • • 1 • ■ • 


SSMOMNTD 

"X* 08'" MSVC SH0NS VOLUME MOUNTED TO ANY 
HOST 

3 

(3) HEX 

1 

SSM0RSV0 

RESERVED 

4 

(4) ADDRESS 

4 

SSMOPNAM 

POINTER TO JOBNAME 

8 

(8) ADDRESS 

4 

SSMOPSTN 

POINTER TO STEP NUMBER 

12 

(C) ADDRESS 

4 

SSMOPUAD 

POINTER TO UNIT ADDRESS 

16 

(10) ADDRESS 

4 

SSMOPVOL 

POINTER TO VOLUME SERIAL 


SSMO 

162 


MVS/370 Debug Hdbk Vol 5 


SSHO 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 









Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS 

TYPE LENGTH 

NAME 

DESCRIPTION 

20 

(14) ADDRESS 

4 

SSMOPDDN 

POINTER TO DDNAME 

24 

(18) ADDRESS 
...1 11.. 

..11 _ 

4 

SSMOPRPN 

SSMOSIZE 

SSOBLN17 

POINTER TO RELATIVE POS NUMBER 
"X-SSMOBGN" EXTENSION LENGTH 
"SSOBHSIZ+SSMOSIZE“TOTAL SSOB LENGTH 


SSMO 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SSMO 

Data Area Descriptions 163 




Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SSMS 


Common Name : SSOB Extension for MSSC Message Task/JES3 Exit 
Macro XD : IEFSSMS 
DSECT Name : SSMS 
Created by : ICB2MSG 

Subpool and Key ! User subpool and key 
Size : 32 bytes 

Pointed to by : SSOBINDV field of the SSOB data area 
Serialization : None 

Function : Parameter list for the subsystem interface. 


OFFSETS 


IKaMIM 

rnmn 

DESCRIPTION 


. .1 

• • # 

. .1.. 


SSOBMSSC 

SSMSBGN 

"36" MSSC MSG TASK IDCSSOBFUNC) 

"X" MSSC MESSAGE TASK BEGINNING 

0 

(0) 

ADDRESS 

2 

SSMSLEN 

MSSC MESSAGE TASK EXT SIZE 

2 

(2) 

SIGNED 

2 

SSMSRSVO 

RESERVED 

4 

(4) 

ADDRESS 

4 

SSMSPSDG 

POINTER TO THE SORTED SDG 

8 

(8) 

..1 

ADDRESS 
. 11.. 

• • • # • 

4 

SSMSPLRU 

SSMSSIZE 

SS0BLN18 

POINTER TO FIRST SDG NITH LRU 
"X-SSMSBGN" EXTENSION LENGTH 
"SSOBHSIZ+SSMSSIZE"TOTAL SSOB LENGTH 


SSMS 

164 


MVS/370 Debug Hdbk Vol 5 


LC28-1389-0 (c) Copyright IBM Corp 


1980, 


SSMS 

1985 






Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SSNQ 


Common Name : SSOB Extension for Dynamic Allocation Change ENQ 

Macro ZD : IEFSSNQ 

DSECT Name : SSNQ 

Created by : IEFAB4DC 

Subpool and Key : User subpool and key 

Size : 36 bytes 

Pointed to by : SSOBINDV field of the SSOB data area 
Serialization : None 

Function : Parameter list for the subsystem interface. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 

...1 1.11 SSOBNQCD "27" CHANGE ENQ USE ATTRIBUTE FUNCTION 

ID(SSOBFUNC) 

. SSOBNQOK "0" ALLRIGHT TO ENQ TO CHANGE USE ATTRI¬ 
BUTE 



• * * • • X • • 


SSOBNQNO 

SSNQBGN 

"4" NOT CURRENTLY POSSIBLE TO CHANGE THE 
ENQ USE ATTRIBUTE 

"X” CHANGE ENQ USE ATTRIBUTE BEGINNING 

0 

CO) ADDRESS 

2 

SSNQLEN 

SSNQ EXTENSION LENGTH 

2 

(2) SIGNED 

2 

SSNQRSVO 

RESERVED 

4 

(4) ADDRESS 

4 

SSNQDSNP 

ADDR DSNAME BUFFER 

8 

(8) ADDRESS 

4 

SSNQFLGP 

ADDR FLAG FIELD 

12 

(C) SIGNED 

• • « 1 > i • • 

• • X • • X • • 

4 

SSNQRSV1 

SSNQSIZE 

SS0BLN14 

RESERVED 

"X-SSNQBGN" EXTENSION LENGTH 
"SSOBHSIZ+SSNQSIZE" TOTAL SSOB LENGTH 


SSNQ 

LC28-1389-0 (c) Copyright IBM Corp 


1980, 


1985 


Data Area Descriptions 


SSNQ 

165 







Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SSOB 


Common Name : Subsystem Options Block 
Macro ZD : IEFJSSOB or IEFSSOBH 
DSECT Name : SSOB 

Created by i Many users (IEFIIC, IEE0403D, IEE0803D, IEAVSWCH,...) 

Subpool and Key s User subpool and key 

Size : Header is of fixed length 20 bytes. The extensions are of variable lengths 

Pointed to by : JSNA_ field of the JSWA data area 

LCTSSOBA field of the LCT data area 
Serialization : None 

Function : Parameter list for the subsystem interface. 

(NOTE i See the extensions for further information). 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) 

• • • 

STRUCTURE 

• • 4 * • 

0 

SSOB 

SSOBEGIN 

"X" 

0 

(0) 

CHARACTER 

4 

SS0BID 

CONTROL BLOCK IDENTIFIER 

4 

(4) 

ADDRESS 

2 

SSOBLEN 

LENGTH OF SSOB HEADER 

6 

(6) 

SIGNED 

2 

SSOBFUNC 

FUNCTION ID 

8 

(8) 

ADDRESS 

4 

SSOBSSIB 

ADDRESS OF SSIB OR ZERO 

12 

1- 

(C) 

SIGNED 

4 

SSOBRETN 

RETURN CODE FROM SUBSYSTEM 


THE FOLLOWING RETURN CODES WILL BE RETURNED IN REGISTER 15 
TO THE ISSUER OF THE IEFSSREQ MACRO 
SSOBRETN CONTAINS FUNCTION-RELATED RETURN CODES 
(DEFINED IN EACH FUNCTION EXTENSION) 


...» « 1 ». 




SSRTOK "0" SUCCESSFUL COMPLETION REQUEST WENT 

TO A SUBSYSTEM. 

SSRTNSUP "4" SUBSYSTEM DOES NOT SUPPORT THIS 

FUNCTION 

SSRTNTUP "8" SUBSYSTEM EXISTS, BUT IS NOT UP 


SSOB 

166 


MVS/370 Debug Hdbk Vol 5 


SSOB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 










Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 

- 11.. SSRTNOSS "12" SUBSYSTEM DOES NOT EXIST 

...1 _ SSRTDIST "16" FUNCTION NOT COMPLETED-DISASTROUS 

ERROR 

...1 .1.. SSRTLERR "20" LOGICAL ERROR (BAD SSOB FORMAT, 

INCORRECT LENGTH,...) 

16 (10) SIGNED A SSOBINDV FUNCTION DEPENDENT AREA POINTER 

...1 .1.. SSOBHSIZ "x-SSOBEGIN" SSOB HEADER LENGTH 


SSOB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SSOB 

Data Area Descriptions 167 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SSRB 


Common Name : Suspended Service Request Block 
Macro ID : IHASSRB 
DSECT Name : SSRBSECT 

Created by : Program FLIH and lock manager when an SRB is to be suspended 
Subpool and Key : 245 and key 0 

Size : 944 bytes 

Pointed to by : SPL or service management queues 

Serialization : SRBFLNK - Compare 8 Swap; all others - owner-serialized 
Function : Used to save PSW, registers and FRR stack when an SRB has to 
be suspended for a page fault or locking purposes. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) 

STRUCTURE 

n 

SRBSECT 


0 

(0) 

ADDRESS 

4 

SRB 


0 

(0) 

CHARACTER 

4 

SRBID 

EBCDIC ACRONYM FOR SRB OR SSRB. 

4 

(4) 

ADDRESS 

4 

SRBFLNK 

FORWARD CHAIN FIELD 

8 

(8) 

ADDRESS 

4 

SRBASCB 

PTR TO ASCB OF ADDRESS SPACE SRB IS TO 

BE DISPATCHED TO 

12 

(C) 

CHARACTER 

8 

SRBFLC 

SRB AREA MOVED TO LON CORE 

12 

(C) 

BITSTRING 

2 

SRBCPAFF 

CPU AFFINITY MASK 

14 

(E) 

SIGNED 

2 

SRBPASID 

PURGEDQ ASID IDENTIFIER 

16 

(10) 

ADDRESS 

4 

SRBPTCB 

PURGEDQ TCB IDENTIFIER 

20 

(14) 

ADDRESS 

4 

SRBEP 

ENTRY POINT OF ROUTINE 

24 

(18) 

ADDRESS 

4 

SRBRMTR 

ADDRESS OF RESOURCE MGR RTN 

28 

(1C) 

ADDRESS 

4 

SRBPARM 

USER PARAMETER 


SSRB 

168 


MVS/370 Debug Hdbk Vol 5 


SSRB 

LC28-1389-0 Cc) Copyright IBM Corp. 1980, 1985 














Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 

32 (20) ADDRESS 4 SRBSAVE SAVE AREA POINTER 


36 

(24) BITSTRING 

i 

SRBPKF 

37 

(25) BITSTRING 

i 

SRBPRIOR 

37 

(25) BITSTRING 

i 

SRBFLGS 


!•«« • • • • 


SRBLLREQ 


• 1 • • ■ • • • 


SRBLLHLD 


■•I, •••• 


SRBFRREQ 


• •.1 • . . . 


SRBFRRCL 


• ••• 1 • * * 

SRBSUSP 

a a a a « 1 • « 

SRBPNONQ 

• a a • • • 1 i 

SRBCMLRQ 



.1 


SRBRES1 

38 

(26) BITSTRING 

1 

SRBPSYS 

SRBHLHI 

39 

(27) BITSTRING 

1 

SRBFLGS1 


1 i • • a a a a 


SRBMAIN 


• la. •••• 


SRBSP245 


• • 1 • * i * • 


SRBRES2 


• ••X a • • • 


SRBRES3 


• a a a Xaaa 


SRBRES4 


• a a a aXaa 


SRBRES5 


.1. 


SRBRES6 


a * a a a a a 1 


SRBRES7 


PROTECT KEY INDICATION 

PRIORITY LEVEL INDIC 

SRB OPTION FLAGS 

n X'80'" LOCAL LOCK REQUIRED 

n X , 40 ,n LOCAL LOCK HELD 

"X’20 ,n FRR REQUESTED 

"X'lO*" THIS BIT IS OBSOLETE SINCE FRR 

PARM AREA ALWAYS CLEARED BY DISPATCHER. 

RETAINED FOR COMPATIBILITY. 

"X' 08'" SUSPENDED SRB ONLY ON FOR SSRB 
"X'OA'" NON QUIESCABLE SRB 
"X'02 ,n SRB REPRESENTS A CML LOCK 
REQUEST OR LOCAL LOCK REQUEST DELAYED 
DUE TO A CML REQUEST. IF SRBSUSP=1, THIS 
SSRB REQUIRES A CML LOCK FOR ITS OWN 
PROCESSING. IF SRBSUSP=0 AND SRBLLREQ=0, 
THIS SRB WAS CREATED ON BEHALF OF A TASK 
REQUIRING A CML LOCK. IF SRBSUSP=0 AND 
SRBLLREQ=1, THIS DELAYED SRB HAS BEEN 
RESCHEDULED WITHOUT THE LOCAL LOCK DUE 
TO A CML LOCK REQUEST. 

"X'01'" RESERVED. 

"X'OO"' SYSTEM PRIORITY LEVEL 
INDICATION OF SUSPEND LOCKS HELD AT SRB 
SUSPENSION 
SRB TYPE FLAGS. 

"X’80 ,n SRB/SSRB MUST BE FREEMAINED. 
"X'40 ,M SRB/SSRB FROM SUBPOOL 245. 
"X^O*" RESERVED. 

"X'lO'" RESERVED. 

"X'08RESERVED. 

"X , 04 ,n RESERVED. 

"X , 02 ,n RESERVED. 

"X'01 ,n RESERVED. 


40 (28) ADDRESS 4 SRBFRRA FRR ROUTINE ADDRESS 


44 (20 SIGNED 4 SRBEND END OF SRB 


SSRB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SSRB 

Data Area Descriptions 169 










Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 



. .1, 

• « • < 

, li.. 

i • • • • 


SRBSIZE 

SSRBSECT 

"SRBEND-SRBSECT" SIZE OF SRB 
"SRBSECT" SET LABEL TO BEGINNING 


44 

(20 

SIGNED 

4 


RESERVED 


48 

(30) 

FLOATING 

8 

SSRB 

START OF SAVE AREA PORTION 


48 

(30) 

CHARACTER 

32 

SSRBFPRS 

FLOATING POINT REG SAVE 


48 

(30) 

FLOATING 

8 

SSRBFPRO 

FLOATING POINT REG 0 


56 

(38) 

FLOATING 

8 

SSRBFPR2 

FLOATING POINT REG 2 


64 

(40) 

FLOATING 

8 

SSRBFPR4 

FLOATING POINT REG 4 


72 

(48) 

FLOATING 

8 

SSRBFPR6 

FLOATING POINT REG 6 


80 

(50) 

SIGNED 

4 

SSRBTRAN 

PAGE FAULT ADDR(FLIH) 


84 

(54) 

SIGNED 

4 

SSRBRES1 

RESERVED. 


88 

(58) 

CHARACTER 

64 

SSRBGPRS 

GENERAL REGISTER SAVE 


152 

(98) 

FLOATING 

8 

SSRBCPSN 

VALUE OF CURRENT PSW 


160 

(AO) 

FLOATING 

8 

SSRBCPUT 

CPU TIMER SAVEAREA 


168 

(A8) 

FLOATING 

8 

SSRBTIME 

SRB TIME LIMIT VALUE IF THIS SRB 
BEING TIMED, OTHERWISE ZERO. 

IS 

176 

(B0) 

ADDRESS 

4 

SSRBXSB 

ADDRESS OF EXTENDED STATUS BLOCK 

(XSB). 

180 

(B4) 

SIGNED 

4 

SSRBRES2 

RESERVED. 


184 

(B8) 

CHARACTER 

760 

SSRBFSSA 

FRR STACK SAVEAREA 


184 

(B8) 

SIGNED 

4 

SSRBFRRL 

SAVED STACK LENGTH 


188 

(BC) 

CHARACTER 

756 

SSRBFRRS 

SAVED FRR STACK 



SSRB 

170 


MVS/370 Debug Hdbk Vol 5 


SSRB 

LC28-1389-0 Cc) Copyright IBM Corp. 1980, 1985 



















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 

944 (3B0) FLOATING 8 SSRBEND END OF SSRB. 

SSRBLEN "SSRBEND-SRBSECT" LENGTH OF SSRB AREA 


SSRB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SSRB 

Data Area Descriptions 171 



Contains Restricted Materials of IBM 
Licensed Materials ~ Property of IBM 


MBS 


Common Name : SSOB Extension for Re-enqueue of a Job 

Macro ZD : IEFSSRQ 

DSECT Name : SSRQ 

Created by : IEFSD166 

Subpool and Key t User subpool and key 

Size : 28 bytes 

Pointed to by : SSOBINDV field of the SSOB data area 
Serialization : None 

Function S Parameter list for the subsystem interface. 


OFFSETS 

TYPE 

LENGTH 

NAME 

DESCRIPTION 


_11.1 

i*l* * 1 « « 


SSOBRENQ 

SSRQPERR 

SSRQBGN 

"13" RE-ENQUEUE FUNCTION ID (SSOBFUNC) 
"36" PROGRAM ERROR 

"X" 

0 

(0) ADDRESS 

2 

SSRQLEN 

RE-ENQUEUE EXTENSION LENGTH 

2 

(2) SIGNED 

2 

SSRQRESV 

RESERVED 

4 

(4) SIGNED 

2 

SSRQSTEP 

STEP NUMBER 

6 

(6) BITSTRING 1 

SSRQFLG1 

REASON FOR REENQUEING FLAGS 


1 * * • a a a a 


SSRQSTRS 

"X*80'" STEP RESTART 


• 1 • • •••• 


SSRQCHRS 

"X*40' n CHECKPOINT RESTART 


. . 1 . a a • a 


SSRQCNRS 

"X'20'" CONTINUE RESTART 


a a a X a a a a 


SSRQHOLD 

"X'lO'" HOLD THE JOB 


.... 1111 


SSRQRSV1 

"X'OF*" RESERVED FLAGS 

7 

(7) HEX 

1 

SSRQRSV2 

RESERVED 


aaaa 1 a a a 


SSRQSIZE 

"X-SSRQBGN" RE-ENQUEUE EXTENSION LENGTH 


...1 11.. 


SS0BLEN9 

"SSOBHSIZ+SSRQSIZE" TOTAL SSOB LENGTH 


SSRQ 

172 


MVS/370 Debug Hdbk Vol 5 


LC28-1389-0 Cc) Copyright IBM Corp 


SSRQ 
1980, 1985 





Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SSRR 


Common Name S SSOB Extension for Request/Return Job ID 

Macro ID : IEFSSRR 

DSECT Name : SSRR 

Created by : IEEMB803 

Subpool and Key : User subpool and key 

Size : 28 bytes 

Pointed to by s SSOBINDV field of the SSOB data area 
Serialization : None 


Function 

OFFSETS 

: Parameter 

TYPE 

list for the subsystem 

LENGTH NAME 

interface. 

DESCRIPTION 


...1 .1.. 

...1 .1.1 

.1. . 

..1. .1.. 


SSOBRQST 

SSOBRTRN 

SSRROK 

SSRRFAIL 

SSRRPERR 

SSRRBGN 

"20" REQUEST JOB ID FUNCTION 

ID(SSOBFUNC) 

"21" RETURN JOB ID FUNCTION IDCSSOBFUNC) 
"0" REQUEST/RETURN SUCCESSFUL 
"4" REQUEST/RETURN UNSUCCESSFUL 
"36" PROGRAM ERROR 

"X" 

0 

(0) ADDRESS 

2 

SSRRLEN 

R/R EXTENSION LENGTH 

2 

(2) SIGNED 

2 

SSRRRSVO 

RESERVED 

4 

(4) ADDRESS 
• ••• 1 • •« 
...1 11.. 

4 

SSRRSECB 

SSRRSIZE 

SSOBLENE 

REQUEST JOB ID STOP ECB POINTER 
"X-SSRRBGN" R/R EXTENSION LENGTH 
"SSOBHSIZ+SSRRSIZE" 


SSRR 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SSRR 

Data Area Descriptions 173 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


Common Name s SSOB Extension for Step Initiation 

Macro ID : IEFSSSI 

DSECT Name : SSSI 

Created by : IEFSD162 

Subpool and Key : User subpool and key 

Size : 36 bytes 

Pointed to by : SSOBINDV field of the SSOB data area 
Serialization : None 

Function : Parameter list for the subsystem interface. 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 



...1 .11. 


SSOBNSSI 

SSSIBGN 

"22" NOTIFY SUBSYSTEM OF STEP INITIATION 
FUNCTION ID (SSOBFUNC) 

"X" NOTIFY SUBSYSTEM OF STEP INITIATION 




BEGINNING 

0 

2 

(0) ADDRESS 
(2) SIGNED 

2 

2 

SSSILEN 

SSSIRSVO 

NSSI EXTENSION LENGTH 

RESERVED 

THE FOLLOWING FIELDS CONTAIN POINTERS 
NUMBERS IN PARANTHESES INDICATE LENGTH 

TO THE INDICATED DATA, 

OF AREA POINTED TO. 


4 

(4) ADDRESS 

4 

SSSIPSNM 

FOR A NORMAL JOB, POINTER TO NAME ON THE 
•EXEC PGM=' STATEMENT. (8) FOR A STARTED 
JOB, POINTER TO THE ID, UNIT TYPE, OR 
•STARTING'. (8) 

8 

(8) ADDRESS 

4 

SSSIPPSN 

FOR A NORMAL JOB, POINTER TO NAME ON THE 
•EXEC PROC=* STATEMENT (OR BLANKS). (8) 
FOR A STARTED JOB, POINTER TO BLANKS. 

(8) 

12 

(C) ADDRESS 
•••X i<•i 
• • 1 • • 1 • • 

4 

SSSIPSNO 

SSSISIZE 

SSOBLENF 

POINTER TO STEP NUMBER (1) 

"X-SSSIBGN" EXTENSION LENGTH 
"SSOBHSIZ+SSSISIZE" TOTAL SSOB LENGTH 


SSSI 

174 


MVS/370 Debug Hdbk Vol 5 


SSSI 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 







Contains Restricted Materials of IBM 
Licensed Materials ** Property of IBM 


SSSO 


Common Name : SSOB Extension for Process SYSOUT Data Sets 

Macro ID : IEFSSSO 

DSECT Name : SSSO 

Created by : IKJCT462 

Subpool and Key : User subpool and key 

Size : 140 bytes 

Pointed to by : SSOBINDV field of the SSOB data area 
Serialization : None 

Function : Parameter list for the subsystem interface. 
OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


• 

• . • 

1 

SSOBSOUT 

"1" SYSOUT FUNCTION ID (SSOBFUNC) 

a 

• a • 

1 

SSSOCVER 

"1" CURRENT VERSION NUMBER OF THIS DATA 





AREA 

• 

a a a 


SSS0RT0K 

"0" EVERYTHING IS OK 

• 

.1. 


SSS0E0DS 

"4" NO MORE DATA SETS TO SELECT 

• 

1. . 


SSS0NJ0B 

"8" JOB NOT FOUND 

• 

11. 


SSSOINVA 

"12" INVALID SEARCH ARGUMENTS 

1 

• • • 


SSSOUNAV 

”16” UNABLE TO PROCESS NON 

1 

.1. 


SSSODUPJ 

"20" DUPLICATE J0BNAMES 

1 

1. . 


SSSOINVJ 

”24” INVALID JOBNAME/JOBID COMBINATION 

1 

11. 


SSSOIDST 

"28” INVALID DESTINATION SPECIFIED 

a 

a a a 


SSSOBGN 

"X" 


(0) ADDRESS 

2 

SSSOLEN 

(2) BITSTRING 

1 

SSS0UFLG 

1 « « • •••• 


SSSOSETC 

• 1 • • a a a a 


SSSODELC 

tilt •••• 


SSS0R0UT 

• ••X • • • a 


SSSOHOLD 

« a a a 1 t t i ^ 


SSSORLSE 


SYSOUT EXTENSION LENGTH 

USER SELECTION OPTIONS CLASS ROUTING AND 

DISPOSITION FLAGS 

"X'80*" USE SSSOCLAS AS DISPOSITION 
”X'40*” DELETE SELECTED DATA SET 
”X'20’" REROUTE SELECTED DATA SET TO 
DESTINATION IN SSSODEST 
"X'10*" HOLD ALL SELECTED DATA SETS 
”X'08'" RELEASE ALL SELECTED DATA SETS 


EQU X'07• RESERVED FLAGS 


SSSO 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SSSO 

Data Area Descriptions 175 











Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


3 

(3) HEX 

1 

SSSOVER 

VERSION NUMBER 

4 

(4) BITSTRING 

1 

SSS0FLG1 

DATA SET SELECTION CONTROL FLAGS 


X • • • «••• 


SSSOHLD 

"X'80SELECTION SHOULD INCLUDE HELD 
SYSOUT DATA SETS 


• X•• •••• 


SSSOSCLS 

"X'40*" USE CLASS 


••1* •••• 


SSSODST 

"X'20USE REMOTE DESTINATION 


•••X •••• 


SSSOSJBN 

"X'lO'" USE JOB NAME 


•••• X••• 


SSSOSJBI 

n X'08'" USE JOB ID 


• ••• • 1 • • 


SSSOSPGM 

"X'04*" USE USER WRITER PROGRAM NAME 


• ••• *•X • 


SSSOSFRM 

"X'02'" USE FORM NUMBER 


• ••• • • • 1 


SSS0RSV2 

"X'Ol'" RESERVED 

5 

(5) BITSTRING 

1 

SSS0FLG2 

CURRENT DATA SET DISPOSITION FLAGS 


1 • • i 


SSSOCTRL 

"X»80‘" 1 PROCESSING COMPLETED 0 RETURN 
DATA SET NAME 


• X•• •••• 


SSSOCHKP 

"X»40‘" USE SSSORBA TO CHECKPOINT RBA OF 
CURRENT DATA SET IN CLASS 


» » 1 • •••• 


SSSOEXTD 

"X'20‘" EXTENDED PROCESS SYSOUT REQUEST 


...1 1111 


SSS0RSV3 

"X'lF'" RESERVED FLAGS 

6 

(6) SIGNED 

2 

SSSOCOPY 

NUMBER OF COPIES 

8 

(8) CHARACTER 

8 

SSSOJOBN 

JOB NAME 

16 

(10) CHARACTER 

8 

SSSOJOBI 

JOB ID 

24 

(18) CHARACTER 

1 

SSSOCLAS 

NAME OF DESTINATION CLASS SPECIFIED VIA 
THE NEWCLASS PARAMETER 

25 

(19) CHARACTER 

3 

SSS0RSV5 

RESERVED 

28 

(1C) CHARACTER 

8 

SSSODEST 

REMOTE DESTINATION SPECIFIED VIA THE 

DEST PARAMETER 

36 

(24) CHARACTER 

8 

SSSOPGMN 

USER WRITER NAME 

44 

(20 CHARACTER 

8 

SSSORBA 

RBA OF SYSOUT DATA SET 

52 

(34) CHARACTER 

44 

SSSODSN 

SYSOUT DATA SET NAME 

96 

(60) CHARACTER 

4 

SSSOFORM 

FORM NUMBER 


SSSO 

176 


MVS/370 Debug Hdbk Vol 5 


SSSO 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 












Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS_IYPE_ LENGTH NAME _ DESCRIPTION 


SSSOCLSL HILL CONTAIN 1-8 CLASSES HHEN USED FOR REROUTING OR DELETE 
FUNCTIONS AND HILL CONTAIN ONLY ONE CLASS HHEN USED FOR PRINTING. 







■.. ..,1 

100 

(64) 

CHARACTER 

8 

SSSOCLSL 

CLASS SELECTION LIST FOR DATA SET 
SELECTION 

108 

(60 

ADDRESS 

4 

SSSOHTRC 

A POINTER TO A COMMUNICATION AREA FOR 

THE USER HRITTEN HRITER 


112 

(70) CHARACTER 

8 SSSODSID 

DATA SET ID TO PLACE SYSOUT ON EXTERNAL 
DEVICES 


.111 1... 

SSSOSIZE 

"X-SSSOBGN" SYSOUT EXTENSION LENGTH 


1... 11.. 

SS0BLEN1 

"SSOBHSIZ+SSSOSIZE" SSOB LENGTH-HEADER 
SYSOUT EXTENSION 


SSSO 

LC28-1389-0 (c) Copyright IBM Corp 


1980, 1985 


Data Area Descriptions 


SSSO 

177 






Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SSUS 


Common Name i SSOB Extension for Remote Destination Validity Check 

Macro ZD : IEFSSUS 

DSECT Name : SSUS 

Created by : IEFDB4A0 

Subpool and Key : User subpool and key 

Size : 36 bytes 

Pointed to by : SSOBINDV field of the SSOB data area 
Serialization : None 

Function : Parameter list for the subsystem interface. 


TYPE 

LENGTH NAME 

DESCRIPTION 

_1.11 

SSOBUSER 

"11" REMOTE DEST FUNCTION ID (SSOBFUNC) 


SSUSRTOK 

"0" VALID REQUEST 

• ••• • 1 * t 

SSUSNOUS 

"4" INVALID DESTINATION 

•••• 1 • • • 

SSUSINCP 

"8" SUBSYSTEM COULD NOT COMPLETE THE 
VALIDITY CHECK 


SSUSBGN 

"X" 


0 

2 

(0) ADDRESS 
(2) SIGNED 

(VI CM 

SSUSLEN 

SSUSRESV 

REMOTE DESTINATION 
RESERVED 

EXTENSION LENGTH 

4 

(4) SIGNED 

4 

SSUSRSV1 

RESERVED 


8 

(8) CHARACTER 
• ••1 

• • 1 • • 1 * * 

8 

SSUSUSER 

SSUSIZE 

SS0BLEN8 

REMOTE DESTINATION 
"K-SSUSBGN" REMOTE 
LENGTH 

"SSOBHSIZ+SSUSIZE" 

TO BE VERIFIED 
DESTINATION EXTENSION 

TOTAL SSOB LENGTH 


SSUS 

178 


MVS/370 Debug Hdbk Vol 5 


LC28-1389-0 (c) Copyright IBM Corp. 1980, 


SSUS 

1985 






Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SSVS 


Common Name t SSOB Extension for Subsystem Verification 

Macro ID s IEFSSVS 

DSECT Name : SSVS 

Created by : IEESB605 

Subpool and Key : User subpool and key 

Size : 40 bytes 

Pointed to by : SSOBINDV field of the SSOB data area 
Serialization : None 

Function : Parameter list for the subsystem interface. 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 



.... 1111 


SSOBVERS 

"15" FUNCTION ID (SSOBFUNC) 




SSVSSNAM 

"0" SSIB CONTAINS A SUBSYSTEM NAME, 

FIELD SSVSSCTP IS SET, AND (1) IF 
SSVSSTRT IS OFF, BIT SSVSUPSS IS SET OR 
(2) IF SSVSSTRT IS ON, THE SUBSYSTEM IS 
ACTIVE AND SUPPORTS JOB SELECTION 


.1.. 


SSVSJBNM 

"4" NAME IS NOT NAME OF A SUBSYSTEM 


• ••• 1 . , . 


SSVSNACT 

"8" SUBSYSTEM IS NOT ACTIVE (VALID ONLY 
IF SSVSSTRT IS ON) 


• • * * 11* . 


SSVSNSEL 

"12" SUBSYSTEM DOES NOT SUPPORT JOB 
SELECTION (VALID ONLY IF SSVSSTRT IS ON 




SSVSBGN 

"X" 

0 

(0) ADDRESS 

2 

SSVSLEN 

VS EXTENSION LENGTH 

2 

(2) BITSTRING 

1 

SSVSFLG1 

FLAG BYTE 


1 • • • •••• 


SSVSUPSS 

"X'80‘" SET BY MASTER SUBSYSTEM TO INDI¬ 
CATE THAT THE SPECIFIED SUBSYSTEM 
REQUIRES THE USE OF THE PRIMARY SUBSYS¬ 
TEM’S SERVICES (E.G. SYSOUT) 


• 1 • • » • • • 


SSVSSTRT 

"X'40’" TEST NAME IN SSIBJBID FOR ACTIVE 
SUBSYSTEM THAT SUPPORTS INTERNAL READER 
DATASETS 

3 

(3) BITSTRING 

1 

SSVSFLG2 

RESERVED FLAG BYTE 

4 

(4) ADDRESS 

4 

SSVSSCTP 

PTR TO SSCT OF THE SPECIFIED SUBSYS- 


TEM-RETURNED BY THE MASTER SUBSYSTEM 


SSVS 

LC28-1389-0 Cc) Copyright IBM Corp. 1980, 1985 


SSVS 

Data Area Descriptions 179 







Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


QEP-S.EI.s__HEB_kiMSItt—MMI_ description 



« • • t 1 • t • 

• ••• 1 • * • 


SSVSSIZS 

SSVSADD 

"X-SSVSBGN" SHORT FORM LENGTH 
"X" ADD ON TO VS EXTENSION 


8 

(8) SIGNED 

2 

SSVSNUM 

POSITION OF SUBSYSTEM ON SSCVT 

CHAIN 

10 

(A) SIGNED 

2 

SSVSRES1 

RESERVED 


12 

(C) SIGNED 

4 

SSVSRES2 

RESERVED 


16 

(10) SIGNED 
• ••1 ♦ 1 • • 

• • 1 • 1 • • • 

4 

SSVSRES3 

SSVSSIZE 

SS0BLN1A 

RESERVED 

"X-SSVSBGN" LONG FORM LENGTH 
"SSOBHSIZ+SSVSSIZE" TOTAL SSOB 

LENGTH 


ssvs 

180 


MVS/370 Debug Hdbk Vol 5 


LC28-1389-0 (c) Copyright IBM Corp. 1980 


SSVS 

1985 




Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


Common Name : Subsystem Vector Table 
Macro ID : IEFJSSVT 
DSECT Name : SSVT 

Created by : Subsystem owning the SSVT, at initialization of subsystem 
Subpool and Key : Any - determined by subsystem 
Size : 364 bytes 

Pointed to by : SSCTSSVT field of the SSCVT data area 
Serialization : None 

Function : Contains the indications of functions of a subsystem and the 
addresses of the routines that perform those functions. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) 

STRUCTURE 

260 

SSVT 


0 

(0) 

CHARACTER 

260 

SSVTFSIZ 

SSVT FIXED AREA SIZE 

0 

(0) 

CHARACTER 

2 

SSVTRSV1 

RESERVED 

2 

1- 

(2) 

SIGNED 

2 

SSVTFNUM 

NUMBER OF FUNCTIONS SUPPORTED BY THIS 
SUBSYSTEM 

— 11 - ' — . .1 


256 BYTE FUNCTION MATRIX 

THE SSOB FUNCTION ID IS USED AS A SUBSCRIPT INTO THIS MATRIX 
MATRIX FUNCTION BYTE =0 * THE FUNCTION SPECIFIED IN THE 
SSOB IS NOT SUPPORTED BY THIS 
SUBSYSTEM. 

MATRIX FUNCTION BYTE -=0 « THE VALUE IN THE FUNCTION BYTE 
IS USED AS A SUBSCRIPT INTO 
SSVTFRTN TO OBTAIN THE 
ADDRESS OF THE HORD 
CONTAINING THE FUNCTION ROUTINE 
POINTER FOR THIS REQUEST 


4 (4) ADDRESS 256 SSVTFCOD FUNCTION MATRIX 


SSVT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SSVT 

Data Area Descriptions 181 







Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS_TYPE_LENGTH NAME 




SSVTFRTN IS THE FIRST WORD OF A VARIABLE LENGHT MATRIX CONTAINING 
FUNCTION ROUTINE POINTERS FOR FUNCTIONS SUPPORTED BY THIS 
SUBSYSTEM. THE MATRIX CAN BE A MAXIMUM OF 256 WORDS LONG. 


260 (104) ADDRESS 0 SSVTFRTN FUNCTION POINTER 


SSVT 

182 


MVS/370 Debug Hdbk Vol 5 


SSVT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 




Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SSWA 


Common Name t Subsystem Scheduler Hork Area 

Macro ID : IEFJSSMA 

DSECT Name : SSWA 

Created by : IEFVDA, IEFDB414 

Subpool and Key : SWA (Subpool 236 or 237) and key 1 
Size : Variable length 

Pointed to by : SIOTSSWA field of the SIOT data area 
SSA6SSWA field of the SSARB data area 
Serialization : None 

Function : Contains the data coded as part of a SUBSYS DD card 
or its dynamic allocation equivalent. 

OFFSETS_ TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) 

STRUCTURE 

9 

SSWA 

SUBSYSTEM SCHEDULER WORK 

AREA 

0 

(0) 

CHARACTER 

8 

SSWAHDR 

FIXED LENGTH HEADER 


0 

(0) 

SIGNED 

2 

SSWATYPE 

TYPE FIELD 


2 

(2) 

CHARACTER 

4 

SSWASSNM 

SUBSYSTEM NAME 


6 

(6) 

SIGNED 

2 

SSWAPRNO 

NO OF LEN-PARM PAIRS 


8 

(8) 

CHARACTER 

1 

SSWAPREN 

FIRST LEN-PARM ENTRY 


8 

(8) 

UNSIGNED 

1 

SSWAPLEN 

LENGTH OF FIRST (OR ONLY) 

i PARAMETER 

9 

(9) 

CHARACTER 

0 

SSWAPVAL 

VALUE OF FIRST (OR ONLY) 

PARAMETER 

0 

(0) 

STRUCTURE 

1 

SSWAIFLD 

INDIVIDUAL LEN-PARM PAIR 

MAP 

0 

(0) 

UNSIGNED 

1 

SSWAILEN 

LEN OF PARM ITEM 


1 

(1) 

CHARACTER 

0 

SSWAIPRM 

VALUE OF PARM ITEM 



SSWA 

LC28-1389-0 <c) Copyright IBM Cor 1980, 1985 


SSWA 

Data Area Descriptions 183 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SSWT 


Common Name i SSOB Extension for Write to Operator 
Macro ID : IEFSSWT 
DSECT Name : SSWT 

Created by : IEAVSWCH, IEAVVWTO, IEAVMWTO, IEEMB804 
Subpool and Key : User subpool and key 
Size s 16 bytes 

Pointed to by : SSOBINDV field of the SSOB data area 
Serialization : None 

Function : Parameter list for the subsystem interface. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 

_ 1..1 SSOBWTO "9" WTO FUNCTION ID (SSOBFUNC) 

..1. ...1 SSOBCONS "33" CONSOLE STATUS FUNCTION ID 

..1. ..1. SSOBWTL "34" WTL FUNCTION ID 

. SSWTRTOK "0" FUNCTION 9: CONTINUE NORMAL WTO PRO¬ 
CESSING AND HARDCOPY THE MESSAGE FUNC¬ 
TION 34: CONTINUE NORMAL WTO PROCESSING 

.1.. SSWTNDSP "4" FUNCTION 9: DO NOT DISPLAY THE WTO, 

BUT MCS SHOULD HARDCOPY IT FUNCTION 34: 
BYPASS WTO PROCESSING 

_ 1... SSWTOKNH "8" FUNCTION 9: DISPLAY THE WTO AND DO 

NOT HARDCOPY IT 

_ 11.. SSWTNDNH "12" FUNCTION 9: DO NOT DISPLAY THE WTO 

AND DO NOT HARDCOPY IT 

. SSWTBGN "X" 

0 (0) ADDRESS 2 SSWTLEN WTO EXTENSION LENGTH 

2 (2) BITSTRING 1 SSWTFLG1 FIRST GENERAL FLAG AREA 

1. SSWTPSB1 "X*80 ,n FOR USE BY THE PRIMARY SUBSYSTEM 

(REPLACES WQEMCSK AND WMJMCS2C BITS OF 
THE WQE) 

3 (3) ADDRESS 1 SSWTVRSN VERSION LEVEL 

.1 SSWT132 "1" VERSION LEVEL FOR 0S/VS2 JBB1328 

.1 SSWTVRID "SSWT132" VERSION LEVEL VALUE 


SSWT 

184 


MVS/370 Debug Hdbk Vol 5 


SSWT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 





Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


FOLLOWING WTO SUBSYSTEM INTERFACES MAY EXIST 
SINGLE WTO OR FIRST LINE OF MULTI-LINE WTO: 

SSWTMIN, SSWTORE ARE 0 
SECOND TO N-TH LINE OF MULTI-LINE WTO: 

SSWTORE IS 0 
WTOR: 

SSWTMIN IS 0 


1 1 


4 

(4) ADDRESS 

4 

SSWTWQE 

WQE ADDRESS (MAJOR) 

8 

(8) ADDRESS 

4 

SSWTMIN 

MINOR WQE ADDRESS 

12 

(C) ADDRESS 
•••X •••• 

• •X* •X • * 

4 

SSWTORE 

SSWTSIZE 

SS0BLEN6 

OPERATOR REPLY ELEMENT ADDRESS 
"X-SSWTBGN" WTO EXTENSION LENGTH 
"SSOBHSIZ+SSWTSIZE" TOTAL SSOB LENGTH 


SSWT 

LC28-1389-0 Cc) Copyright IBM Corp 


1980/ 1985 


Data Area Descriptions 


SSWT 

185 





Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


STKE 


Common Name : PCLINK Stack Element 
Macro ID : IHASTKE 
DSECT Name : STKX, STKE 
Created by : IEAVXSTK 

Subpool and Key : For local poolst 255 and key 0; for global pools 239 
and key 0 

Size : STKXs 8 bytes; STKEs 72 bytes 

Pointed to by : PSASTKE, XSBSTKE, STKHAEP, STKEPREV. When the STKE is 
on the free queue, the origin is STKHAEP and the link field is STKEPREV. 
Hhen the STKE is in use, the origin is PSASTKE or XSBSKE and the link 
field is STKEPREV. 

Serialization l A STKE is obtained from the free queue via the CML lock. 
Local pool expansion is serialized via the CML lock. Global pool expansion 
is serialized via the SALLOC lock. 

Function : Maps the local and global PCLINK stack elements, which form 
the control blocks for the PCLINK STACK/UNSTACK/EXTRACT services. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) 

STRUCTURE 

n 

STKX 

PREFIX TO STACK ELEMENT POOL EXTENT 

0 

(0) 

SIGNED 

4 

STKXTNT 

POINTER TO PREVIOUS STKX OR 0 

4 

(4) 

SIGNED 

4 

STKXSPAL 


4 

(4) 

HEX 

1 

STKXSPID 

SUBPOOL OF THIS EXTENT 

5 

(5) 

SIGNED 

3 

STKXPLEN 

SIZE OBTAINED FOR THIS EXTENT 


. .. 

. 1 ... 


STKXLEN 

"X-STKX" LENGTH OF STKX 

0 

(0) 

STRUCTURE 

B 

STKE 

BEGINNING OF STACK ELEMENT 

0 

(0) 

CHARACTER 

4 

STKESTKE 

STKE ACRONYM 

4 

(4) 

ADDRESS 

4 

STKEHEAD 

ADDRESS OF POOL HEADER 


STKE 

186 


MVS/370 Debug Hdbk Vol 5 


STKE 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 











Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


8 

(8) FLOATING 

8 

STKEINFO 

STACK INFORMATION FOR PREVIOUS STKE 
(PSASTKE OR XSBSTKE HAS THE CORRESPOND¬ 
ING INFORMATION FOR THE TOP STKE FOR AN 
RB OR SRB.) 

8 

(8) SIGNED 

2 

STKEPTKN 

TOKEN OF PRIOR ELEMENT 

10 

(A) SIGNED 

2 

STKEPASD 

ASID OF PRIOR ELEMENT 

12 

(C) ADDRESS 

4 

STKEPREV 

ADDRESS OF PRIOR ELEMENT (IF IN USE) OR 
NEXT FREE ELEMENT (IF NOT IN USE) 

16 

(10) CHARACTER 

1 

STKEPGMM 

PROGRAM MASK FROM CALLER'S PSW 

17 

(11) CHARACTER 

1 

STKERSV1 

RESERVED 

18 

(12) SIGNED 

2 

STKEASID 

ASID OF POOL 

20 

(14) ADDRESS 

4 

STKESA 

PREVIOUS SAVE AREA 

24 

(18) ADDRESS 

4 

STKERET 

RETURN ADDRESS 

28 

(1C) SIGNED 

4 

STKEPR15 

PARAMETER REGISTER 15 

32 

(20) SIGNED 

4 

STKEPRMO 

PARAMETER REGISTER 0 

36 

(24) SIGNED 

4 

STKEPRM1 

PARAMETER REGISTER 1 

40 

(28) SIGNED 

4 

STKEKEY 


40 

(28) CHARACTER 

3 

STKEREG2 

BITS 8-31 OF CALLER'S REG 2 

43 

(2B) CHARACTER 

1 

STKEKEY2 

CALLER'S PSW KEY IN BITS 0-3 

44 

(20 BITSTRING 

2 

STKEKMSK 

CALLER'S PSW KEY MASK (PKM) 

46 

(2E) SIGNED 

2 

STKECASD 

PASID OF CALLER 

48 

(30) ADDRESS 

4 

STKELPTR 

LATENT PARAMETER POINTER 

52 

(34) ADDRESS % 

4 

STKEEPA 

ENTRY POINT ADDRESS 

56 

(38) FLOATING 

8 

STKEEND 

END OF STKE 


..11 1... 


STKELEN 

"STKEEND-STKE" LENGTH OF STACK ELEMENT 

STKE 




STKE 


LC28-1389-0 (c) Copyright IBM Corp. 1980/ 1985 Data Area Descriptions 187 















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SVCTABLE 


Common Name : SVC Table Entry 

Macro ID : IHASVC 

DSECT Name : SVC 

created by : SYSGEN 

Subpool and Key : NUCLEUS and key 0 

Size S 8 bytes per entry 

Pointed to by : SCVTSVCT field of the SCVT data area 
Serialization : None 

Function : Each entry contains information for a particular SVC 
function—the SVC entry point address* type* APF authorized* and 
locks needed before the module can be executed. 

PJE.FS.EIg_HEi_ LENGTH NAME _ DESCRIPTION 


0 

(0) STRUCTURE 

D 

SVCENTRY 


0 

(0) ADDRESS 

4 

SVCEP 

SVC ENTRY POINT ADDRESS 

4 

(4) SIGNED 

2 

SVCATTR1 

ATTRIBUTES 

4 

(4) BITSTRING 

1 

SVCTP 

TYPE FIELD 




SVCTP1 

"X»00 ,w TYPE 1 SVC 


1 • • • *«*» 


SVCTP2 

"X'80TYPE 2 SVC 


1 1 a • a a a a 


SVCTP34 

"X'CO*" TYPE 3 OR 4 SVC 


• •la •••• 


SVCTP6 

"X»20 ,n TYPE 6 SVC 


• ••• 1 • • • 


SVCAPF 

"X'OS'" APF AUTHORIZED 1-AUTHORIZED 


• ••• • 1 « • 


SVCESR 

"X'04 ,n SVC IS A PART OF THE ESR 


• ••• • • 1 • 


SVCNP 

"X'02'" NON-PREEMPTIVE SVC 


.1 


SVCASF 

"X'01‘" SVC CAN BE ASSISTED 

5 

(5) BITSTRING 

1 

SVCRESV1 

RESERVED BYTE 

6 

(6) SIGNED 

2 

SVCLOCKS 

LOCK ATTRIBUTES 


1««* •••• 


SVCLL 

"X'80 ,n LOCAL LOCK NEEDED 


• 1 •• •••• 


SVCCMS 

"X'40'" CMS LOCK NEEDED 


••1* •••• 


SVCOPT 

n X'20OPT LOCK NEEDED 


•••1 ««•• 


SVCALLOC 

"X'10'" SALLOC LOCK NEEDED 


•••• 1 «•• 


SVCDISP 

"X'08'" DISP LOCK NEEDED 

SVCTABLE 



SVCTABLE 

188 

MVS/370 Debug Hdbk Vol 

5 

LC28-1389-0 <c) Copyright IBM Corp. 1980* 1985 
















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


svi 


Common Name : Supervisor Vector Table 

Macro XD : IHASVT 

DSECT Name : SVT 

Created by s IEAVESVT 

Subpool and Key : Nucleus 

Size t 400 bytes 

Pointed to by : PSASVT field of the PSA data area 
CVTSVT field of the CVT data area 

Serialization : SVTDSREQ - Dispatcher lock; SVTGSMQ, GSPL, LSMQ, SVTWAS 
Compare & Swap; SVTDACTV - Disablement; SVTWAIT - Disablement 
Function : Contains address of routine and control blocks used by 
Supervisor Control. 

O F F S ETS _ TYPE LENGTH NAME _ MSSRIEHSM 


0 

(0) 

STRUCTURE 

0 

SVT 


0 

(0) 

V-ADDRESS 

4 

SVTISECT 

"V(IEAVEINT)" ADDRESS OF INTERSECT ROU¬ 
TINE 

4 

(4) 

V-ADDRESS 

4 

SVTGSCH1 

"V(IEAVESC3)" ADDRESS OF GLOBAL SCHEDULE 
ROUTINE FOR ENABLED USERS 

8 

(8) 

V-ADDRESS 

4 

SVTGSCH2 

"V(IEAVESC4) n ADDRESS OF GLOBAL SCHEDULE 
ROUTINE FOR DISABLED USERS 

12 

(C) 

V-ADDRESS 

4 

SVTMSEEP 

"V(IEAVEMS2)" ADDRESS OF MEMORY SNITCH 
FOR ENABLED USERS 

16 

(10) 

V-ADDRESS 

4 

SVTMSDEP 

"V(IEAVEMSO)" ADDRESS OF MEMORY SNITCH 
FOR DISABLED USERS 

20 

(14) 

V-ADDRESS 

4 

SVTRSCS 

"V(IEAVRSCS)" RESUME CONDITIONAL ENTRY 

PT 

24 

(18) 

SIGNED 

4 

SVTJSTEQ 

JOB STEP TIME EXCEEDED QUE 


SVT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SVT 

Data Area Descriptions 189 









Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OEESEIS_TYPE_ LENGTH NAME _ DESCRIPTION 


28 

(1C) SIGNED 

4 

SVTDSREQ 

DISPATCHER SERIALIZATION REQUIRED 

28 

(1C) HEX 

1 

SVTSRQ1 

FIRST BYTE OF SVTDSREQ 


1 • • • i • • » 


SVTDSG4 

"X'80 ,w SIGNAL WAITING PROCESSORS 


• 1 • • • • • • 


SVTDFLT 

"X'40*" DEFAULT GLOBAL INTERSECT 

29 

(ID) HEX 

1 

SVTSRQ2 

SECOND BYTE OF SVTDSREQ 


1 • • • •••• 


SVTDSG3 

"X'80 ,n SIGNAL WAITING PROCESSORS 


• ••• • • 1 • 


SVTSRM1 

"X* 02'" SRM IS INTERSECTING 


• ••• • • • 1 


SVTOVER 

"X'Ol'" Q VERIFICATION INTERSECTING 

30 

(IE) HEX 

1 

SVTSRQ3 

THIRD BYTE OF SVTDSREQ 


1. 


SVTDSG2 

"X'80'" SIGNAL WAITING PROCESSORS 


.1.. 


SVTRCTI 

"X*40*" RCT INTERSECTING 




SVTTCBV 

"X'20'" TCB VERIFICATION INTERSECTING 




SVTACHA 

"X'10'" ASCB CHAP INTERSECTING 


.1.. 


SVTMTER 

"X'04‘" MEMTERM INTERSECTING 


.1. 


SVTMINI 

"X'02'« MEMORY INIT INTERSECTING 


.1 


SVTCBVE 

"X'Ol*" CONTROL BLOCK VERIFICATION INTER 

31 

(IF) HEX 

1 

SVTSRQ4 

FOURTH BYTE OF SVTDSREQ 


1 . 


SVTDSG1 

"X'80*" SIGNAL WAITING WAITING PROCESS¬ 
ORS 


.1. 


SVTDETA 

"X'40'" DETACH INTERSECTING 


•«1 • «••* 


SVTATTA 

"X'20‘" ATTACH INTERSECTING 


•••1 «••• 


SVTRTM2 

"X'10'" RTM2 INTERSECTING 


_ 1... 


SVTRTM1 

"X'08‘" RTM1 INTERSECTING 


.1.. 


SVTCHAP 

"X'04'" TCB CHAP INTERSECTING 


.1. 


SVTSTAT 

"X'02' n STATUS INTERSECTING 


• •«• « • • 1 


SVTPURD 

"X'Ol'" PURGE DQ INTERSECTING 

32 

(20) FLOATING 

8 

SVTGSRB 

GLOBAL SRB QUEUES 

32 

(20) SIGNED 

4 

SVTGSMQ 

GLOBAL SERVICE MANAGEMENT QUEUE 

36 

(24) SIGNED 

4 

SVTGSPL 

GLOBAL SERVICE PRIORITY LIST 

40 

(28) SIGNED 

4 

SVTLSMQ 

GLOBAL SERVICE PRIORITY LIST 

44 

(20 SIGNED 

4 

SVTWAS 

WAIT ADDRESS SPACE VECTOR USED TO SIGP 
MEMORY SWITCH TO WAITING PROCESSOR 

44 

(20 SIGNED 

4 

SVTWAS00(16) 

WASV 


SVT 

190 


MVS/370 Debug Hdbk Vol 5 


SVT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 

















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


108 (60 SIGNED 4 


108 

(60 HEX 

4 

SVTR06C 

PREVIOUSLY SVTDACTV MUST REMAIN NON-ZERO 

112 

(70) HEX 

12 

SVTR070 

RESERVED. 

124 

(70 SIGNED 

4 



124 

(70 HEX 

4 

SVTR07C 

PREVIOUSLY SVTPWAIT MUST REMAIN NON-ZERO 

128 

(80) HEX 

12 

SVTR080 

RESERVED. 

140 

(80 V-ADDRESS 

4 

SVTISECR 

"V(IEAVEINR)" INTERSECT RESET ROUTINE 

144 

(90) SIGNED 

4 

SVTXASCB 

ADDRESS OF PC/AUTH ASCB. 

148 

(94) SIGNED 

4 

SVTXMD 

ADDRESS OF CROSS MEMORY DIRECTORY (XMD) 
(IN PC/AUTH ADDRESS SPACE). 

152 

(98) V-ADDRESS 

4 

SVTGSPH 

"V(IEASTKH)" ADDRESS OF GLOBAL STACK 

POOL HEADER FOR PCLINK SERVICE. 

156 

(90 V-ADDRESS 

4 

SVTXEPM 

"V(IEAVXEPM)" ADDRESS OF THE ENTRY POINT 
MODULE WHICH CONTAINS PROGRAM NAMES AND 
NUCLEUS ENTRY POINT ADDRESSES USED BY XM 
SERVICES. 

160 

(AO) V-ADDRESS 

4 

SVTBBR 

"VdEAVEBBR)" ADDRESS OF THE BIND BREAK 
ROUTINE. 

164 

(A4) V-ADDRESS 

4 

SVTLASCB 

"V(IEAVLACB)" ADDRESS OF LOCASCB SERVICE 
ROUTINE. 

168 

(A8) HEX 

4 

SVTCMCKM 

CMSET CONSTANT FOR ICMA CHECK. 

172 

(AC) V-ADDRESS 

4 

SVTCMST1 

"V(IEAVCMSl)" ADDRESS OF CMSET SET ROU¬ 
TINE. 

176 

(BO) V-ADDRESS 

4 

SVTCMRT1 

"V(IEAVCMRl)" ADDRESS OF CMSET RESET, 
CHKAUTH=YES ROUTINE. 


SVT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SVT 

Data Area Descriptions 191 

















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


180 

(B4) 

V-ADDRESS 

4 

SVTCMRT2 

"V(IEAVCMR2)" ADDRESS OF CMSET RESET, 
CHKAUTH=NO ROUTINE. 

184 

(B8) 

V-ADDRESS 

4 

SVTCMSTR 

W V(IEAVCMST)" ADDRESS OF CMSET SSARTO 
ROUTINE. 

188 

(BC) 

V-ADDRESS 

4 

SVTCMSBR 

"V(IEAVCMSB)" ADDRESS OF CMSET SSARBACK 
ROUTINE. 

192 

(CO) 

V-ADDRESS 

4 

SVTCDSPE 

M V(IEAVCDEN)" ADDRESS OF CALLDISP ROU¬ 
TINE FOR ENABLED CALLERS. 

196 

(C4) 

V-ADDRESS 

4 

SVTCDSPD 

"V(IEAVCDDS)" ADDRESS OF CALLDISP ROU¬ 
TINE FOR DISABLED CALLERS. 

200 

(C8) 

V-ADDRESS 

4 

SVTSRBSV 

"V(IEAVESTS)" ADDRESS OF SRBSTAT SAVE 
ROUTINE. 

204 

(CC) 

V-ADDRESS 

4 

SVTSRBRS 

"V(IEAVESTR)" ADDRESS OF SRBSTAT RESTORE 
ROUTINE. 

208 

(DO) 

V-ADDRESS 

4 

SVTAFFST 

"V(IEAVESAS)" ADDRESS OF SSAFF SET ROU¬ 
TINE. 

212 

(D4) 

V-ADDRESS 

4 

SVTAFFOB 

"V(IEAVESAF)" ADDRESS OF SSAFF OBTAIN 
ROUTINE. 

216 

(D8) 

V-ADDRESS 

4 

SVTSRB6 

"V(IEAVSPMl)" ADDRESS OF GETSRB ROUTINE. 

220 

(DC) 

V-ADDRESS 

4 

SVTSSRBG 

n V(IEAVSPM2)" ADDRESS OF GETSSRB ROU¬ 
TINE. 

224 

(E0) 

V-ADDRESS 

4 

SVTSRBF 

"V(IEAVSPM3) n ADDRESS OF FREESRB ROU¬ 
TINE. 

228 

(E4) 

V-ADDRESS 

4 

SVTSSRBF 

"V(IEAVSPM4)" ADDRESS OF FREESSRB ROU¬ 
TINE 

232 

(E8) 

FLOATING 

8 

SVTSRBP 

SUPERVISOR SRB POOL HEADER. SERIALIZA¬ 
TION CDS. 

SVT 

192 

MVS/370 Debug Hdbk 

Vol 

5 

SVT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 










Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


232 

(E8) 

SIGNED 

4 

SVTSRBS 

SRB POOL ELEMENT SYNC COUNT 

236 

(EC) 

SIGNED 

4 

SVTSRBA 

ADDRESS OF FIRST AVAILABLE SRB. 

240 

(F0) 

SIGNED 

4 

SVTSRBE 

SRB POOL EXTENT COUNTS. SERIALIZATION 
SALLOC. 

240 

(F0) 

SIGNED 

2 

SVTSRBM 

MAX SRB POOL EXTENTS. 

242 

(F2) 

SIGNED 

2 

SVTSRBC 

CURRENT SRB POOL EXTENTS. 

244 

(F4) 

SIGNED 

4 

SVTSSRBE 

SSRB POOL EXTENT COUNTS. SERIALIZATION 
SALLOC. 

244 

( F4) 

SIGNED 

2 

SVTSSRBM 

MAX SSRB POOL EXTENTS. 

246 

(F6) 

SIGNED 

2 

SVTSSRBC 

CURRENT SSRB POOL EXTENTS. 

248 

(F8) 

FLOATING 

8 

SVTSSRBP 

SUPERVISOR SSRB POOL HEADER. SERIALIZA¬ 
TION CDS. 

248 

(F8) 

SIGNED 

4 

SVTSSRBS 

SSRB POOL ELEMENT SYNC CNT 

252 

(FC) 

SIGNED 

4 

SVTSSRBA 

ADDRESS OF FIRST AVAILABLE SSRB. 

256 

(100) 

CHARACTER 

4 

SVTSVT 

SVT ACRONYM. 

260 

(104) 

V-ADDRESS 

4 

SVTRSUA 

•'V(IEAVRSUA)" ADDRESS OF RESUME ROUTINE 
FOR ASYNCHRONOUS UNCONDITIONAL OPTION. 

264 

(108) 

V-ADDRESS 

4 

SVTRSCA 

"V(IEAVRSCA)" ADDRESS OF RESUME ROUTINE 
FOR ASYNCHRONOUS CONDITIONAL OPTION. 

268 

(10C) 

V-ADDRESS 

4 

SVTRSUS 

"V(IEAVRSUS)" ADDRESS OF RESUME ROUTINE 
FOR SYNCHRONOUS UNCONDITIONAL OPTION 

WITH ASCB SPECIFIED. 

272 

(110) 

V-ADDRESS 

4 

SVTSUSQ 

"V(IEAVSUSQ)" ADDRESS OF SUPERVISOR STOP 
ROUTINE. 

276 

(114) 

V-ADDRESS 

4 

SVTRSTD 

"V(IEAVRSTD)" ADDRESS OF SUPERVISOR 

RESET ROUTINE. 


SVT 

LC28-1389-0 Cc) Copyright IBM Corp. 1980, 1985 


SVT 

Data Area Descriptions 193 









Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS _ TYPE LENGTH NAME _ DESCRIPTION 


280 

(118) 

SIGNED 

4 

SVTFW1 

FULLNORD SERIALIZED BY CS. 

280 

(118) 

HEX 

1 

SVTCS1 

FIRST BYTE OF CS WORD. 


1 .. 

• 1 • * 1 


SVTXMSOP 

"X'80 ,n PC/AUTH SERVICE ROUTINES OPERA¬ 
BLE. 


.1. 

• • • • • 


SVTXMSUP 

"X'40»" PC/AUTH ADDRESS SPACE INITIAL¬ 
IZED. 

281 

(119) 

HEX 

3 

SVTCS2 

RESERVED LAST 3 BYTES OF SVTCS1. SERIAL¬ 
IZATION CS. 

284 

(11C) 

V-ADDRESS 

4 

SVTDSPC 

n V(IEAVDSPC) n ADDRESS OF DISPATCHER 

ENTRY POINT FOR STOP ROUTINE CALLERS. 

288 

(120) 

SIGNED 

4 

SVTAFTR 

VIRTUAL ADDRESS OF ADDRESS SPACE FIRST 
TABLE (AFT) CONTAINING REAL ADDRESSES. 

292 

(124) 

SIGNED 

4 

SVTAFTV 

VIRTUAL ADDRESS OF ADDRESS SPACE FIRST 
TABLE (AFT) CONTAINING VIRTUAL 

ADDRESSES. 

296 

(128) 

V-ADDRESS 

4 

SVTSSEM 

"V(IEAVESSE)" ADDRESS OF SPACE SWITCH 
EVENT MANAGER. 

300 

(120 

V-ADDRESS 

4 

SVTISSAT 

"V(IEAISSAT)" ADDRESS OF INITIAL SUBSYS¬ 
TEM AFFINITY TABLE FOR ALL TASKS. 

304 

(130) 

SIGNED 

4 

SVTSSTSV 

LENGTH REQUIRED FOR SRB STATUS SAVE 

AREA. CONSTANT USED BY SRBSTAT CALLERS. 
MODULE IEAVESTS MAPS AREA FOR STATUS 
SAVING. 

308 

(134) 

V-ADDRESS 

4 

SVTTRCO 

"V(IEAVTRCO)" ADDRESS OF SYSTEM TRACE 
ON/OFF ROUTINE. 

312 

(138) 

SIGNED 

4 

SVTMDLQ 

MEMORY DELETE QUEUE HEADER FOR ASCBS 

THAT CANNOT BE FREED. 

316 

(130 

SIGNED 

4 

SVTSLWLN 

SLIP/PER WORK AREA LENGTH REQUIRED FOR 
EACH PROCESSOR 


SVT 

194 


MVS/370 Debug Hdbk Vol 5 


SVT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 









Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


320 

(190) 

V-ADDRESS 

9 

SVTSRBMD 

"V(IEAVESTM)" ADDRESS OF SRBSTAT MODIFY 
ROUTINE. 

329 

(199) 

HEX 

2 

SVTR199 

RESERVED. 

326 

(196) 

SIGNED 

2 

SVTNSLX 

NUMBER OF SYSTEM LXS BEYOND THE HIGHEST 
SYSTEM FUNCTION TABLE LX. 

328 

(198) 

V-ADDRESS 

9 

SVTSET1 

"VdEAVSETl)" ADDRESS OF STATUS ENTRY 
POINT TO SIGPCPUS ROUTINE. 

332 

(190 

V-ADDRESS 

9 

SVTEXP2 

"V(IEAVEXP2)" ADDRESS OF ENTRY POINT 

INTO EXIT PROLOG FOR MVSA ASSISTED TYPE 

1 SVCS. USED BY IEAVNPS5 TO INITIALIZE 
THE MPL WHEN THE CROSS MEMORY MICROCODE 
IS AVAILABLE. 

336 

(150) 

HEX 

16 

SVTR150 

RESERVED. 

352 

(160) 

SIGNED 

9 


ALIGN SVTDACTV TO FULL WORD 

352 

(160) 
1 .. , 

HEX 

1 

SVTDACTV(16) 

SVTDRECM 

SVTDACT1 

DISPATCHER ACTIVE INDICATORS 
"X'8 0'" DISPATCHER IN RECURSIVE MODE 
"SVTDACTV,16,C'X'" REDEFINE SVTDACTV TO 
16 BYTES 

368 

(170) 

SIGNED 

9 


ALIGN SVTPWAIT TO FULL WORD 

368 

(170) 

HEX 

1 

SVTPWAITU6) 

SVTPWAT1 

PROCESSOR WAITING INDICATORS 
"SVTPWAIT,16,C'X'" REDEFINE SVTPWAIT TO 
16 BYTES 

389 

(180) 

SIGNED 

9 

SVTHAXP 

SKEWING THRESHOLD VALUE SUPPLIED BY SRM 
OWNERSHIP: SUPERVISOR CONTROL SERIALIZA¬ 
TION: WRITE-SRM LOCK READ-DISABLEMENT 

388 

(189) 

SIGNED 

9 

SVTAXPRM 

NUMBER OF TIMES WORK THAT IS MARKED AS 
LESS EFFICIENT FOR AN AXP IS DISPATCHED 
ON AN AXP WHEN DISPATCHER IS IN RECUR¬ 
SIVE RECURSIVE MODE. OWNERSHIP: SUPERVI¬ 
SOR CONTROL SERIALIZATION: CS 




SVT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SVT 

Data Area Descriptions 195 









Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


392 

(188) 

V-ADDRESS 

4 

SVTMSEP4 

"V(IEAVEMS4) W ENABLED MEMORY SNITCH 

USING REGISTER 0 INTERFACE ENTRY POINT 
IEAVEMS4. OWNERSHIP: SUPERVISOR CONTROL 
SERIALIZATION: N/A 

396 

(180 

V-ADDRESS 

4 

SVTMSEP5 

"V(IEAVEMS5)" DISABLED MEMORY SWITCH 
USING REGISTER 0 INTERFACE ENTRY POINT 
IEAVEMS5. OWNERSHIP: SUPERVISOR CONTROL 
SERIALIZATION: N/A 

400 

(190) 

FLOATING 

8 

SVTEND 

END OF SVT. 

END OF 

SVT 






SVT 

196 


MVS/370 Debug Hdbk Vol 5 


LC28-1389-0 (c) Copyright IBM Corp 


1980 


SVT 

1985 




Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


CROSS REFERENCE 


NAME 

HEX 

OFFSET 

HEX 

VALUE 

NAME 

HEX 

OFFSET 

HEX 

VALUE 

NAME 

HEX 

OFFSET 

HEX 

VALUE 

SVT 

0 


SVTGSPH 

98 


SVTSRBA 

EC 


SVTACHA 

IE 

10 

SVTGSPL 

24 


SVTSRBC 

F2 


SVTAFFOB 

D4 


SVTGSRB 

20 


SVTSRBE 

FO 


SVTAFFST 

DO 


SVTHAXP 

180 


SVTSRBF 

EO 


SVTAFTR 

120 


SVTISECR 

8C 


SVTSRBG 

D8 


SVTAFTV 

124 


SVTISECT 

0 


SVTSRBM 

FO 


SVTATTA 

IF 

20 

SVTISSAT 

12C 


SVTSRBMD 

140 


SVTAXPRM 

184 


SVTJSTEQ 

18 


SVTSRBP 

E8 


SVTBBR 

AO 


SVTLASCB 

A4 


SVTSRBRS 

CC 


SVTCBVE 

IE 

01 

SVTLSMQ 

28 


SVTSRBS 

E8 


SVTCDSPD 

C4 


SVTMDLQ 

138 


SVTSRBSV 

C8 


SVTCDSPE 

CO 


SVTMINI 

IE 

02 

SVTSRM1 

ID 

02 

SVTCHAP 

IF 

04 

SVTMSDEP 

10 


SVTSRQ1 

1C 


SVTCMCKM 

A8 


SVTMSEEP 

C 


SVTSRQ2 

ID 


SVTCMRT1 

BO 


SVTMSEP4 

188 


SVTSRQ3 

IE 


SVTCMRT2 

B4 


SVTMSEP5 

18C 


SVTSRQ4 

IF 


SVTCMSBR 

BC 


SVTMTER 

IE 

04 

SVTSSEM 

128 


SVTCMSTR 

B8 


SVTNSLX 

146 


SVTSSRBA 

FC 


SVTCMST1 

AC 


SVTPURD 

IF 

01 

SVTSSRBC 

F6 


SVTCS1 

118 


SVTPWAIT 

170 


SVTSSRBE 

F4 


SVTCS2 

119 


SVTPWAT1 

170 

0170 

SVTSSRBF 

E4 


SVTDACTV 

160 


SVTQVER 

ID 

01 

SVTSSRBG 

DC 


SVTDACT1 

160 

0160 

SVTRCTI 

IE 

40 

SVTSSRBM 

F4 


SVTDETA 

IF 

40 

SVTRSCA 

108 


SVTSSRBP 

F8 


SVTDFLT 

1C 

40 

SVTRSCS 

14 


SVTSSRBS 

F8 


SVTDRECM 

160 

80 

SVTRSTD 

114 


SVTSSTSV 

130 


SVTDSG1 

IF 

80 

SVTRSUA 

104 


SVTSTAT 

IF 

02 

SVTDSG2 

IE 

80 

SVTRSUS 

10C 


SVTSUSQ 

110 


SVTDSG3 

ID 

80 

SVTRTM1 

IF 

08 

SVTSVT 

100 


SVTDSG4 

1C 

80 

SVTRTM2 

IF 

10 

SVTTCBV 

IE 

20 

SVTDSPC 

11C 


SVTR06C 

6C 


SVTTRCO 

134 


SVTDSREQ 

1C 


SVTR07C 

7C 


SVTWAS 

2C 


SVTEND 

190 


SVTR070 

70 


SVTHASOO 

2C 


SVTEXP2 

14C 


SVTR080 

80 


SVTXASCB 

90 


SVTFW1 

118 


SVTR144 

144 


SVTXEPM 

9C 


SVTGSCH1 

4 


SVTR150 

150 


SVTXMD 

94 


SVTGSCH2 

8 


SVTSET1 

148 


SVTXMSOP 

118 

80 

SVTGSMQ 

20 


SVTSLHLN 

13C 


SVTXMSUP 

118 

40 


SVT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


SVT 

Data Area Descriptions 197 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SWB 


Common Name : Scheduler Work Block 
Macro ID : IEFSMB 
DSECT Name : SWB 

Created by : IEFSJBLD and IEFJSWRT 
Subpool and Key : 236 or 237 and key 1 

Size : 192 bytes 

Pointed to by : JCTXSWB field of the JCTX data area. 

SCTCSWB field of the SCT data area, and the 
SIOTSWB field of the SIOT data area. 

Serialization : None 

Function s Contains JCL keyword parameter data defined in JCL definition tables. 
OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) STRUCTURE 

192 

SWB 


0 

(0) CHARACTER 

48 

SWBPREFX 

SWB PREFIX 

0 

(0) UNSIGNED 

1 

SWBVERS 

VERSION NUMBER 

1 

(1) UNSIGNED 

1 

SWBRSV1 

RESERVED 

2 

(2) CHARACTER 

10 

SWBID 

SWB IDENTIFICATION 

2 

(2) CHARACTER 

8 

SWB0WNM 

OWNER NAME 

10 

(A) UNSIGNED 

2 

SWBBKID 

BLOCK ID 

12 

<C) CHARACTER 

16 

SWBCHNID 

SWB CHAIN IDENTIFICATION 

12 

(C) CHARACTER 

8 

SWBVERB 

VERB 

20 

(14) CHARACTER 

8 

SWBVRBL 

VERB LABEL 

28 

(1C) BITSTRING 

1 

SWBFLAG1 

FLAG BYTE. RESERVED 

29 

(ID) BITSTRING 

1 

SWBFLAG2 

FLAG BYTE 


1. 


SWBNSWA 

SWB DOES NOT RESIDE IN SWA 


.111 1111 



RESERVED 

30 

(IE) CHARACTER 

2 

SWBRSV2 

RESERVED 

32 

(20) ADDRESS 

4 

SWBNEXT 

ADDR OF NEXT SWB ON SAME CHAIN 


SWB 

198 


MVS/370 Debug Hdbk Vol 5 


SWB 

LC28-1389-0 (c) Copyright IBM Corp. 1980. 1985 










Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


36 (24) ADDRESS 4 SWBCHNXT ADDR OF NEXT SWB ON NEXT CHAIN (APPLICA¬ 

BLE TO FIRST SWB ON CHAIN, OTHERWISE 
ZERO) 


40 (28) CHARACTER 8 SWBRSV3 RESERVED 


THE SWB DATA EXTENT IS COMPRISED OF A 128 BYTE DATA PORTION 
AND 16 BYTES OF VALIDITY INDICATORS. FOR EACH BYTE IN THE 
SWB DATA PORTION, THERE IS A CORRESPONDING BIT IN THE VALIDITY 
INDICATORS. IF DATA HAS BEEN STORED IN THAT BYTE, THE VALIDITY 
INDICATOR WILL BE ON, OTHERWISE THE BIT WILL BE OFF. 

THE DATA PORTION OF THE SWB IS BUILT FROM INFORMATION THAT IS 
DEFINED THROUGH THE SCHEDULER JCL FACILITY (SJF), AND ITS 
FORMAT IS DEFINED IN A JCL DEFINITION TABLE (JDT). 


48 

(30) 

CHARACTER 

144 

SWBEXTNT 

SWB DATA 

EXTENT 

48 

(30) 

BITSTRING 

16 

SWBVALID 

VALIDITY 

INDICATORS 

64 

(40) 

CHARACTER 

128 

SWBDATA 

SWB DATA 

PORTION 


SUB 

LC28-1389-0 (c) Copyright IBM Corp 


1980, 1985 


SUB 

Data Area Descriptions 199 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


JAX§ 


Common Name i TSO Terminal Attention Exit Element 

Macro ID : IKJTAXE 

DSECT Name : TAXE 

Created by : IEAVAXOO 

Subpool and Key : 253 and key 0 

Size t 98 bytes 

Pointed to by : RCTDTAXE field of the RCTD data area. 

Serialization : Local Lock 

Function : This data area consists of an IRB, an IQE, and a work area. 
It maps an entire TAXE with the exception of the RB prefix because of 
its varying size and since it is not required when referencing the TAXE. 
The TAXE contains information necessary for scheduling attention exits 
and is used to queue STAX exit requests. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

CO) STRUCTURE 

144 

TAXE 


0 

(0) CHARACTER 

96 

TAXEIRB 

IRB 

96 

(60) ADDRESS 

4 

TAXENIQE 

PTR NEXT AVAILABLE IQE 

STANDARD IQE XXXXXXXXXXXXXXXXXXXXX 


100 

(64) CHARACTER 

44 

TAXEW0RK 

LABEL USED HHEN CLEARING N0RK AREA 

Y02752 

100 

(64) ADDRESS 

4 

TIQELNK 

ADDR OF NEXT IQE ON IQE QUEUE Y02752 

104 

(68) ADDRESS 

4 

TIQEPARM 

PARM TO ASYNCHRONOUS EXIT ROUTINE Y02752 

108 

(60 ADDRESS 

4 

TIQEIRB 

ADDR OF IRB TO BE SCHD. Y02752 

112 

(70) ADDRESS 

4 

TAXETCB 

PTR TO TCB Y02752 


TAXE 

200 


MVS/370 Debug Hdbk Vol 5 


TAXE 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 













Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


WORK AREA OF IRB xxxxxxxxxxxxxxxxx 


116 

(74) CHARACTER 

1 


Z 

117 

(75) ADDRESS 

3 

TAXELNK 

PTR TO NEXT TAXE ON QUE Z 

120 

(78) ADDRESS 

4 


RESERVED Y02752 

124 

(70 ADDRESS 

4 

TAXEEXIT 

PTR TO USER ATTENTION EXIT ROUTINE 

Y02752 

128 

(80) ADDRESS 

4 

TAXEPARM 

PTR TO PARAMETER LIST TO STAX Y02752 

128 

(80) CHARACTER 

1 

TAXESTAT 

STATUS OF PROGRAM ISSUING THE STAX SVC 
Y02752 


1 • « • •••• 


TAXEFKEY 

STATUS FLAG FOR PROB KEY Y02752 


* 1 • • •••• 


TAXEFMOD 

STATUS FLAG FOR PROB MODE Y02752 


••X* •••• 


TAXEFREQ 

STATUS FLAG FOR REQUESTED TAXE Y02752 


• ••1 * « ■ * 


TAXERESM 

ON-ATTENTION PROLOGUE MUST NOT GO TO 

USER ATTENTION EXIT Y02752 


* * * • 1 • « • 


TAXESCHD 

ON-TAXE HAS BEEN SCHEDULED BUT IS NOT IN 
USER CODE Y02752 


.1.. 


TAXEATTH 

ON-ATTN IN EFFECT FOR CL1ST 


.11 



RESERVED 

129 

(81) ADDRESS 

3 

TAXESTAX 

ADDRESS (24 BIT) TO PARM LIST TO STAX 
Y02752 

132 

(84) ADDRESS 

4 

TAXETAIE 

PTR TO TAIE Y02752 

136 

(88) ADDRESS 

4 

TAXEIBUF 

PTR TO USER INPUT BUFFER Y02752 

140 

(80 ADDRESS 

4 

TAXEUSER 

PTR TO USER PARAMETER Y02752 

144 

(90) CHARACTER 

0 

TAXEEND 

TAXE WILL BE IN DBL WDS Y02752 


TAXE 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


TAXE 

Data Area Descriptions 201 











Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


Ifi frST 


Common Name : TCAS Table 

Macro ID : IKTTCAST 

DSECT Name : TCAST 

Created by : TCAS routine IKTCAS53 

Subpool and Key : 231 and key 6 

Size : 128 bytes 

Pointed to by : CVTTCASP field of the CVT data area 
TWATCAST field of the TWAR data area 
Serialization s Compare & swap logic 

Function i The TCAST is the primary control block for TSO/VTAM 
time sharing. It provides information and pointers for TCAS 
and VTIOC routines. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) 

STRUCTURE 

148 

TCAST 


0 

(0) 

CHARACTER 

4 

TCASID 

'TCAS' EBCDIC IDENTIFIER 

4 

(4) 

CHARACTER 

4 

TCASUSER 

FULLNORD CONTAINING TCASUSEC FOR COMPARE 
AND SNAP 

4 

(4) 

SIGNED 

2 

TCASUSEC 

NUMBER OF ACTIVE USERS 

6 

(6) 

SIGNED 

2 

TCASUMAX 

MAXIMUM NUMBER OF USERS ALLONED 

8 

(8) 

CHARACTER 

8 

TCASACBP 

ACB PASSWORD 

16 

(10) 

SIGNED 

2 

TCASRCON 

RECONNECT TIME IN MINUTES 

18 

(12) 

SIGNED 

2 

TCASCLSZ 

CELL SIZE 

20 

(14) 

SIGNED 

4 

TCASHBUF 

HIGH BUFFER THRESHOLD 

24 

(18) 

SIGNED 

4 

TCASLBUF 

LOW BUFFER THRESHOLD 

28 

(1C) 

SIGNED 

2 

TCASCRSZ 

3270 SCREEN SIZE 

30 

(IE) 

UNSIGNED 

1 

TCASCHNL 

MAXIMUM CHAIN LENGTH 

31 

(IF) 

UNSIGNED 

1 


RESERVED 


TCAST 

202 


MVS/370 Debug Hdbk Vol 5 


TCAST 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 









Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS 

TYPE LENGTH 

NAME 

DESCRIPTION 

32 

(20) CHARACTER 

8 

TCASTID 

SYMBOLIC TERMINAL IDENTIFIER 

40 

(28) SIGNED 

4 

TCASXECB 

CROSS MEMORY SYNC ECB 

44 

(20 ADDRESS 

4 

TCASDATI 

INPUT DATA PROCESSOR A(IKT3270I) MODULE 

48 

(30) ADDRESS 

4 

TCASDATO 

OUTPUT DATA PROCESSOR A(IKT32700) MODULE 

52 

(34) ADDRESS 

4 

TCASMSGS 

LPALIB MESSAGE MODULE A(IKTMSGS) MODULE 

56 

(38) ADDRESS 

4 

TCASFRR 

I/O FRR ROUTINE A(IKTIOFRR) MODULE 

60 

(30 ADDRESS 

4 

TCASWA 

A(TCAS WORK AREA) 

64 

(40) ADDRESS 

4 

TCASTTL 

A(TIM/TOM LIST) 

68 

(44) ADDRESS 

4 

TCASTSB 

A(FIRST TSO/VTAM TSB) 

72 

(48) ADDRESS 

4 

TCASIQM 

INPUT QUEUE MANAGER A(IKTQMIN) 

76 

(40 ADDRESS 

4 

TCASOQM 

OUTPUT QUEUE MANAGER A(IKTQMOUT) 

80 

(50) ADDRESS 

4 

TCASEXIT 

TIM/TOM EXIT RTN A(IKTEXIT) MODULE 

1 . . 

84 

(54) ADDRESS 

4 

TCASLTE 

LOS+ERM EXIT A(IKTLTERM) MODULE 

88 

(58) CHARACTER 

1 

TCASFLG1 

| 1 

FIRST TCAST FLAG BYTE 


1»• * 


TCASBKMD 

TERMINAL HAS BREAK MODE 


.1. 


TCASMDSW 

BRE^K MODE SWITCH ALLOWED 


..1. 


TCASABND 

TCA^ ABENDED 


...1 _ 


TCASVSD 

VTAljl SHUTTING DOWN 


_ 1... 


TCASNACT 

TCAS NOT ACTIVE 


.1.. 


TCASHAST 

HALT ISSUED, ADDRESS SPACE TERMINATED 


.1. 



RESERVED 


• ♦»• .. .1 


TCASCONF 

CONFIDENTIAL BUFFERS 

89 

(59) CHARACTER 

1 

TCASFLG2 

SECOND TCAST FLAG BYTE 

90 

(5A) CHARACTER 

1 

TCASFLG3 

RESERVED 

91 

(5B) CHARACTER 

1 

TCASFLG4 

RESERVED 

1 

92 

(50 ADDRESS 

4 

TCASASCB 

POINTER TO TCAS ASCB 


TCAST 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


TCAST 

Data Area Descriptions 203 





















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 

OFF SETS _TYPE_ LENGTH NAME _ DESCRIPTION 


96 

(60) 

ADDRESS 

4 

TCASTGTF 

GTF TRACE ROUTINE A(IKTVTGTF) 

100 

(64) 

SIGNED 

2 


RESERVED 

102 

(66) 

SIGNED 

2 


RESERVED 

104 

(68) 

ADDRESS 

4 

TCASTTQH 

POINTER TO FIRST TERMINAL CONTROL WORK 
ELEMENT 

108 

(60 

ADDRESS 

4 

TCASASCI 

ASCII TRANSLATE TABLE A(IKTASCII) MODULE 

112 

(70) 

ADDRESS 

4 

TCASATTN 

ATTENTION ROUTINE A(IKTATTN) MODULE 

116 

(74) 

UNSIGNED 

2 

TCASBR14 

BR 14 INSTRUCTION FOR SRB RMPL ADDRESS 

118 

(76) 

SIGNED 

2 


RESERVED 

120 

(78) 

ADDRESS 

4 

TCASOMJR 

A(IKTTOMJR) 

124 

(70 

ADDRESS 

4 

TCASTPND 

ADDR OF TPEND EXIT 

128 

(80) 

ADDRESS 

4 

TCASSCHD 

LOSTERM EXIT SCHEDULER A(IKTISTOO) MOD¬ 
ULE 

132 

(84) 

ADDRESS 

4 

TCASDUMP 

A(IKTDMPCD) CONTROL BLOCK 

136 

(88) 

ADDRESS 

4 

TCAS767I 

INPUT DATA PROCESSOR A(IKT3767I) MODULE 

140 

(80 

ADDRESS 

4 

TCAS7670 

OUTPUT DATA PROCESSOR A(IKT37670) MODULE 

144 

(90) 

ADDRESS 

4 

TCASTTYO 

OUTPUT DATA PROCESSOR A(IKTWTTYO) MODULE 

148 

(94) 

CHARACTER 

0 

TCASTEND 

END OF TCAST 


TCAST 

204 


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TCAST 

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Contains Restricted Materials of IBM 
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ICB 


Common Name : Task Control Block 
Macro ZO : IKJTCB 

DSECT Name : TCBFIX (DSECT card precedes prefix). The label* TCB*.should be 
used in the USING statement for the TCB proper. TCBXTNT2 is the DSECT 
name for common extension. 

Created by : SYSGEN, ATTACH 
Subpool and Key : 253 and key 0 

Size s A08 bytes 

Pointed to by : ASMTCBPT field of the ASMVT data area 

ASXBFTCB field of the ASXB data area (first TCB) 

ASXBLTCB field of the ASXB data area (last TCB) 

CVTSLIDA field of the CVT data area (supervisor lock TCB) 
CVTWTCB field of the CVT data area (dummy WAIT TCB) 

DEBTCBAD field of the DEB data area 

DSABTCBP field of the DSAB data area 

EVNTTCBP field of the EVNT data area 

JSCBTCBP field of the JSCB data area (initiator TCB) 

LCTTCBAD field of the LCT data area 
ORETCB field of the ORE data area 

PQETCB field of the PQE data area 

PSATNEM field of the PSA data area (new TCB to dispatch) 

PSATOLD field of the PSA data area (current TCB dispatched) 

QELTCB field of the QEL data area 

QPLTCB field of the QPL data area 

RBLINK field of the RB data area 

RQETCB field of the RQE data area 

SCVTCTCB field of the SCVT data area (Comm Task TCB) 

SMCAWTCB field of the SMCA data area (SMF writer TCB) 

SQETCB field of the SQE data area 

SSETCBA field of the EOT SSOB data area (terminating TCB) 

TAXETCB field of the TAXE data area 

TCBTCB field of the TCB data area (next TCB) 

TCBJSTCB field of the TCB data area (jobstep TCB) 

TCBNTC field of the TCB data area (sister TCB) 

TCBOTC field of the TCB data area (originating TCB) 

TCBLTC field of the TCB data area (subtask TCB) 

TCBBACK field of the TCB data area (previous ready TCB) 

TCCWTCB field of the TCCW data area 
TCTTCB field of the TCT data area 


TCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980* 1985 


TCB 

Data Area Descriptions 205 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


TIOCLDS field of the TIOCRPT data area (line disconnect TCB) 

TQETCB field of the TQE data area 

TSBWTCB field of the TSB data area (waiting TCB) 

TSBCTCB field of the TSB data area (TPUT TCB) 

UCMPXA field of the UCM data area (comm task TCB) 

WQETCB field of the WQE data area 

NQEJSTCB field of the WQE data area (associated jobstep TCB) 
Serialization : Local lock (CS instruction for TCBACTIV# TCBS3A bits) TCB 
active# non-dispatchable. 

Function : The task control block (TCB) serves as a repository for information 
and pointers associated with the task in process. Various components of the 
control program place information in the TCB and obtain information or its 
location by reference to it. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) 

STRUCTURE 

n 

TCBFIX 

, TCBPTR-32 



-32 

(-20) 

CHARACTER 

32 

TCBFRS 

FLOATING POINT REGISTER SAVE 

AREA 


-32 

(-20) 

FLOATING 

8 

TCBFRS0 

SAVE AREA FOR FLOATING POINT 

REGISTER 

D 

-24 

(-18) 

FLOATING 

8 

TCBFRS2 

SAVE AREA FOR FLOATING POINT 

REGISTER 

2 

-16 

(-10) 

FLOATING 

8 

TCBFRS4 

SAVE AREA FOR FLOATING POINT 

REGISTER 

4 

-8 

(-8) 

FLOATING 

8 

TCBFRS6 

SAVE AREA FOR FLOATING POINT 

REGISTER 

6 


..1 

• • • * # 


TCBPXLEN 

"X-TCBFIX"LENGTH OF PREFIX SECTION 


TCB PROPER 


0 

(0) FLOATING 
». 1 « .... 

8 

TCB 

TCBPTR 

0 

(0) ADDRESS 

4 

TCBRBP 

ADDRESS OF THE RB FOR EXECUTING PROGRAM. 
THIS OFFSET FIXED BY ARCHITECTURE. 

4 

(4) ADDRESS 

4 

TCBPIE 

ADDRESS OF SPIE CONTROL AREA. THE FIRST 
WORD OF THIS AREA CONTAINS THE PROGRAM 
INTERRUPT ELEMENT (PIE) ADDRESS. 


TCB 

206 


MVS/370 Debug Hdbk Vol 5 


TCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 













Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


4 

(4) BITSTRING 

1 

TCBPMASK 

SPIE BITS 


.... 1111 


TCBPM 

n X'0F ,n - PROGRAM MASK AT TIME OF SPIE 
INITIATION. MASK RESTORED AT TIME OF 

SPIE NULLIFICATION. 

5 

(5) ADDRESS 

3 

TCBPIEA 

ADDRESS OF SPIE CONTROL AREA. THE FIRST 
WORD OF THIS AREA CONTAINS THE PROGRAM 
INTERRUPT ELEMENT (PIE) ADDRESS. 

8 

(8) ADDRESS 

4 

TCBDEB 

ADDRESS OF THE DEB QUEUE 

12 

(C) ADDRESS 

4 

TCBTIO 

ADDRESS OF THE TASK I/O TABLE (TIOT) 

16 

(10) BITSTRING 

4 

TCBCMP 

TASK COMPLETION CODE AND INDICATORS 

16 

(10) BITSTRING 

1 

TCBCMPF 

INDICATOR FLAGS 


lii* •••» 


TCBCREQ 

n X*80 ,n - A DUMP HAS BEEN REQUESTED 


• X ■ • •« * » 


TCBCSTEP 

"X'40'"- A STEP ABEND HAS BEEN REQUESTED 


• • X • »t * * 

- 

TCBCPP 

"X*20'"- SOME PROBLEM PROGRAM STORAGE 

WAS OVERLAID BY THE SECOND LOAD OF 

ABEND. A FIRST LOAD OVERLAY IS INDICATED 
IN TCBFLGS FIELD (OFFSET 29 DECIMAL). 
(OS/VS1) 


• * 1 • • • • * 


TCBDMPO 

"X'20»"- DUMP OPTIONS WERE PROVIDED ON 
CALLRTM OR SETRP MACRO (0S/VS2) 


• ••1 •••• 


TCBSTCC 

"X'10'"- COMPLETION CODE IS NOT TO BE 
STORED IN TCBCMPC (OFFSET 17 DECIMAL) IF 
AN ABEND IS ENCOUNTERED. THIS IS TO PRE¬ 
VENT AN OVERLAY OF THE ORIGINAL COM¬ 
PLETION CODE. (OS/VS1) 


• • • 1 • « • • 


TCBNOCC 

"X'10'"- A COMPLETION CODE WAS NOT PRO¬ 
VIDED ON CALLRTM MACRO. A DEFAULT CODE 

IS BEING USED. (0S/VS2) 


• • » • X • • » 


TCBCDBL 

"X'OS*"- A DOUBLE ABEND HAS OCCURRED 
(OS/VS1) 


• ••• 1 • • • 


TCBCASID 

"X'08 f "- ABEND WAS SCHEDULED VIA CROSS 
MEMORY ABTERM (0S/VS2) 


• ••• »X • • 


TCBCWTO 

"X'04*"- A DUMP MESSAGE (WTO) IS TO BE 
ISSUED TO THE OPERATOR (OS/VS1) 


« t * * • • 1 • 


TCBCIND 

"X'02*"- ABEND TO OUTPUT AN INDICATIVE 
DUMP (OS/VS1) 


• ••• • • • X 


TCBCMSG 

"X'Ol*"- AN ABEND MESSAGE IS PROVIDED TO 


TCB 

LC28-1389-0 Cc) Copyright IBM Corp. 1980, 1985 


TCB 

Data Area Descriptions 207 






Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 

BE PRINTED BY ABDUMP (0S/VS1) 


17 

(11) 

BITSTRING 

3 

TCBCMPC 

SYSTEM COMPLETION CODE IN FIRST 12 BITS, 
USER COMPLETION CODE IN LAST 12 BITS 

20 

(14) 

ADDRESS 

4 

TCBTRN 

ADDRESS OF TESTRAN CONTROL CORE TABLE 

20 

(14) 

BITSTRING 

1 

TCBABF 

FLAG BYTE 


1. . 

• • # • ft 


TCBMOD91 

"X*80BOTH TESTRAN AND DECIMAL SIMU¬ 
LATOR ON A MOD 91 


.1. 

• 4 # ft • 


TCBNOCHK 

i.X'40'"- SUPPRESS TAKING CHECKPOINTS FOR 
THIS STEP (JOB STEP TCB) 


..1 

• • 1 • • 


TCBGRPH 

n X'20 ,n — GAM/SP IS ACTIVE FOR THIS TASK 


... 

. 1. .. 


TCBTCPP 

n X* 08* n - TCAM POST-PENDING (RORI) 


• • • 

. .1.. 


TCBTCP 

"X'04*"- TEST TASK USED BY TEST SVC 


• • • 

. ..1. 


TCBOLTEP 

"X'02 ,n - OLTEP FUNCTIONS REQUIRE CLEANUP 
BEFORE ABNORMAL TERMINATION CAN BE 
INVOKED 

21 

(15) 

ADDRESS 

3 

TCBTRNB 

ADDRESS OF TESTRAN CONTROL CORE TABLE 

24 

(18) 

ADDRESS 

4 

TCBMSS 

FOR JOB STEP TCB, ADDRESS OF THE BOUNDA- 


RY BOX. FOR SUBTASK TCB, ADDRESS OF THE 
GOTTEN SUBTASK AREA QUEUE ELEMENT (GQE). 
A GQE IS PRESENT ONLY IF THE SYSTEM HAS 
ISSUED A GETMAIN MACRO INSTRUCTION FOR 
THE SPACE. (OS/VS1) ADDRESS OF LAST SPQE 
ON MSS QUEUE (OS/VS2) 


24 (18) HEX 1 TCBR018 RESERVED TCBNROC FIELD UNUSED IN OS/VS 

25 (19) ADDRESS 3 TCBMSSB FOR JOB STEP TCB, ADDRESS OF THE BOUNDA¬ 

RY BOX. FOR SUBTASK TCB, ADDRESS OF THE 
GOTTEN SUBTASK AREA QUEUE ELEMENT (GQE). 
A GQE IS PRESENT ONLY IF THE SYSTEM HAS 
ISSUED A GETMAIN MACRO INSTRUCTION FOR 
THE SPACE. (OS/VS1) ADDRESS OF LAST SPQE 
ON MSS QUEUE (0S/VS2) 


28 

(1C) BITSTRING 

1 TCBPKF 

STORAGE PROTECTION KEY FOR THIS 

TASK. IF 




THERE IS NO STORAGE PROTECTION, 
ARE ZERO. 

ALL BITS 


1111 .... 

TCBFLAG 

"X'F0 ,n - STORAGE PROTECTION KEY 



.... 1111 

TCBZERO 

"X'OF"*- MUST BE ZERO 



TCB 

208 


MVS/370 Debug Hdbk Vol 5 


TCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 




Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME 


(ID) BITSTRING 
(ID) BITSTRING 

X • « • •••• 

5 

1 

TCBFLGS 

TCBFLGS1 

TCBFA 

• I • • 

••X* •••• 


TCBFE 

TCBFERA 

• ••X • • • • 


TCBNONPR 

• ••• 1 • • • 

• ••• • 1 • • 


TCBPDUMP 

TCBFT 

• • • • 1 • 1 • 


TCBFS 

1 » * • • • • 1 


TCBFX 

(IE) BITSTRING 

1 •»• • • • i 

1 

TCBFLGS2 

TCBFOINP 

• la* t t « » 


TCBFSTI 

• • X * •••• 


TCBFABOP 

• ••1 •••• 


TCBFSMC 

• ••• 1 • • • 


TCBFJMC 

• X •• 


TCBFDSOP 


DESCRIPTION 

FLAG BYTE FIELDS 
FIRST TCB FLAG BYTE 

"X'80ABNORMAL TERMINATION IN PRO¬ 
GRESS 

"X*40'"- NORMAL TERMINATION IN PROGRESS 
"X'20'**— ENTER ABEND ERASE ROUTINE WHEN 
IN CONTROL AGAIN (0S/VS2) 

"X*10 ,n - TASK IS NON-PREEMPTABLE 
(OS/VS2) 

"X^S" 1 - PREVENT DUMP INDICATOR (0S/VS2) 
n X* 04* n — TOP TASK IN TREE BEING ABTERMED 
(0S/VS2) 

"X*02* n - ABTERM DUMP COMPLETED (0S/VS2) 
PROBLEM PROGRAM STORAGE HAS BEEN OVER¬ 
LAID TO PROCESS ABEND (OS/VS1) 

"X'Ol*"- PROHIBIT QUEUEING OF ASYNCHRO¬ 
NOUS EXITS FOR THIS TASK 
SECOND FLAG BYTE 

l, X , 80 ,w - THE TASK IS ABENDING AND IS IN 
THE PROCESS OF (1) OPEN FOR DUMP DATA 
SET PROCESSING, (2) CLOSE FOR USER DATA 
SET OR (3) PURGE FOR ENQ'ED RESOURCES. 
THIS BIT IS USED IN CONJUNCTION WITH 
TCBSTACK. (OS/VS2) 

”X , 40 ,n - SECOND JOB STEP INTERVAL HAS 
EXPIRED (0S/VS2 INITIATOR TCB) 

"X'20»"- IF 1, THE SYSABEND DUMP DATA 
SET HAS BEEN OPENED FOR ABEND. IF 0, THE 
SYSUDUMP DUMP DATA SET WAS OPENED. THIS 
BIT IS ONLY USED FOR THE JOB STEP TCB 
AND IS USED IN CONJUNCTION WITH TCBFDSOP 
BIT. (0S/VS2) 

n X*10' n — TASK HAS ISSUED A SYS¬ 
TEM-MUST-COMPLETE AND SET ALL OTHER 
TASKS IN THE SYSTEM NONDISPATCHABLE 
"X'OS' 0 - TASK HAS ISSUED A 
STEP-MUST-COMPLETE AND TURNED OFF ALL 
OTHER TASKS IN THE STEP 
"X'04'"- SYSABEND OPEN FOR JOB STEP 
(0S/VS2) 


TCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


TCB 

Data Area Descriptions 209 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 



31 C1F) BITSTRING 
1 ... • • »• 


• • 




• • • • 


. . 1 . 


...1 


TCBFETXR 

TCBFTS 

TCBFLGS3 

TCBFSM 

TCBRT1S 

TCBABTRM 

TCBABGM 

TCBENQRM 

TCBDWSTA 


"X'02 ,n - ETXR TO BE SCHEDULED 
W X'01'"- THIS TASK IS A MEMBER OF A 
TIME-SLICED GROUP 

THIRD FLAG BYTE. SERIALIZATION TCBACTIV 
OR TASK NONDISPATCHABLE AND LOCAL LOCK 
"X»80'"- ALL PSW'S IN SUPERVISOR STATE 
(0S/VS2) 

"X*AORTM1 HAS INVOKED SLIP FOR A 
TASK IN EUT MODE. RTM2 MAY BYPASS SLIP 
PROCESSING OWNERSHIP RTM 
"X'20"*- ABTERM BIT TO PREVENT MULTIPLE 
ABENDS (0S/VS2) 

"X'lO'"- GETMAIN IS TO DEFAULT LSQA 
REQUESTS TO SQA REQUESTS WHEN REQUEST 
CANNOT BE SATISFIED FROM LSQA C0S/VS2) 
"X'02"*- ENQ/DEQ RESOURCE MANAGER HAS 
RECEIVED CONTROL. NO FURTHER DIRECTED 
ENQS ALLOWED. SERIALIZATION TCBACTIV AND 
CMSEQDQ CLASS LOCK. OWNERSHIP GRS. 
"X'01"*- THIS TASK WAS DETACHED WITH 
STAE=YES OPTION (0S/VS2) 


(20) 

BITSTRING 

1 TCBFLGS4 

NONDISPATCHABILITY FLAGS (0S/VS2) 
RESERVED BYTE (OS/VS1) 

1 ... 

• » i * 

TCBNDUMP 

"X»80 ,n - ABDUMP NONDISPATCHABILITY INDI¬ 
CATOR 

. 1 .. 

• • « • 

TCBSER 

"X'40SERI NONDISPATCHABILITY INDICA¬ 
TOR 

. . 1 . 

• • • • 

TCBRQENA 

"X'20*"- I/O RQE'S EXHAUSTED 

...1 

• • • • 

TCBHNDSP 

"X'lO"*- TASK OR JOB STEP IS MOMENTARILY 
*FROZEN* UNTIL THE REQUIRED RESOURCES 

ARE AVAILABLE. THE BIT IS SET THROUGH 

THE USE OF THE 'STATUS' SVC 

• • • • 

1 ... 

TCBUXNDV 

"X'08"*- TASK IS TEMPORARILY NONDIS¬ 
PATCHABLE BECAUSE SMF TIME LIMIT OR SYS- 
OUT LIMIT USER EXIT ROUTINE IS BEING 
EXECUTED FOR THIS STEP 

t # • « 

. 1 .. 

TCBRBWF 

"X*04'"— TOP RB IS IN WAIT STATE 

• • • • 

...1 

TCBONDSP 

"X'Ol"*- TASK TERMINATING AND NONDIS¬ 
PATCHABLE BECAUSE EITHER OPEN FOR DUMP 
DATA SET IS IN PROCESS OR CLOSE BY ABEND 


TCB 

210 


MVS/370 Debug Hdbk Vol 5 


TCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 




DESCRIPTIO 


Contains Restricted Materials of IBM 

Licensed Materials - Property of IBM 

OFFSETS TYPE LENGTH NAME 

33 (21) BITSTRING 1 TCBFLGS5 

1. TCBFC 

.1. TCBABWF 

.1. TCBUXNDF 

.. 1. TCBPAGE 

...1 _ TCBANDSP 

_ 1... TCBSYS 

.1.. TCBSTP 

.1. TCBFCD1 

.1 TCBPNDSP 


34 

(22) 

SIGNED 

1 

TCBLMP 

35 

(23) 

SIGNED 

1 

TCBDSP 

36 

(24) 

ADDRESS 

4 

TCBLLS 


IS IN PROCESS 

MORE NONDISPATCHABILITY FLAGS. IF ANY 
BIT IN THIS BYTE IS 1, THE TASK IS NON- 
DISPATCHABLE. 

"X^O'"- TASK TERMINATED (0S/VS2) 
"X*40 ,w - ABNORMAL WAIT (0S/VS2) 

"X'40 ,n - TASK IS TEMPORARILY NONDIS- 
PATCHABLE BECAUSE SMF TIME LIMIT OR SYS- 
OUT LIMIT USER EXIT ROUTINE IS BEING 
EXECUTED FOR THIS STEP. THIS BIT IS SET 
TO 1 IN ALL TCB'S EXCEPT JOB STEP TCB. 
(OS/VS1) 

"X'ZO*"- TASK IS NONDISPATCHABLE DUE TO 
EXCESSIVE PAGING RATE 
"X'10'"- TASK IS TEMPORARILY NONDIS¬ 
PATCHABLE BECAUSE IT WAS ATTACHED UNDER 
THE DISP=NO OPERAND 
"X'08 ,n - ANOTHER TASK IS IN SYS¬ 
TEM-MUST-COMPLETE STATUS OR A SUMMARY 
BIT FOR FIELD TCBSYSCT 
"X'04 1 "- ANOTHER TASK IN THIS JOB STEP 
IS IN STEP-MUST-COMPLETE STATUS 
"X*02 ,n - INITIATOR WAITING FOR REGION 
C0S/VS2) 

"X'Ol*"- PRIMARY NONDISPATCHABILITY BIT. 
THIS BIT IS SET TO 1 IF ANY OF THE SEC¬ 
ONDARY NONDISPATCHABILITY BITS (OFFSETS 
173/ 174/ 175/ 200 OR 201 DECIMAL) IS 
SET TO 1. THIS BIT IS SET TO 0 IF A SEC¬ 
ONDARY NONDISPATCHABILITY BIT IS SET TO 
0 AND ALL OTHER SECONDARY NONDISPATCHA¬ 
BILITY BITS ARE 0. 

TASK LIMIT PRIORITY (0S/VS2) NUMBER OF 
RESOURCES FOR WHICH THIS TASK IS 
ENQUEUED (OS/VS1) 

DISPATCHING PRIORITY FOR THIS TASK 

ADDRESS OF LAST LOAD LIST ELEMENT (LLE) 
IN LOAD LIST (0S/VS2) ADDRESS OF THE 
PREFIX OF THE MOST RECENTLY ADDED 
REQUEST BLOCK (RB-8) ON THE LIST OF PRO- 


TCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


TCB 

Data Area Descriptions 211 




Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS_I3£Ei_ LENGTH NAME _ DESCRIPTION 


GRAMS LOADED VIA THE LOAD MACRO INSTRUC¬ 
TION (0S/VS1) 


40 

(28) 

ADDRESS 

4 

TCBJLB 

ADDRESS OF A JOBLIB DCB 


44 

(20 

ADDRESS 

4 

TCBJPQ 

ADDRESS OF LAST CDE FOR JOB PACK 
(JPA) CONTROL QUEUE (0S/VS2) 

AREA 

44 

(20 
1 . . 

BITSTRING 

• • 1 • • 

1 

TCBPURGE 

TCBJPQF 

PURGE FLAGS (0S/VS2) 

"X'80 ,n - JPQ PURGE FLAG 


45 

(2D) 

ADDRESS 

3 

TCBJPQB 

ADDRESS OF LAST CDE FOR JOB PACK 
(JPA) CONTROL QUEUE (0S/VS2) 

AREA 

48 

(30) 

CHARACTER 

64 

TCBGRS 

GENERAL REGISTER SAVE AREA. THIS 
FIXED BY ARCHITECTURE. 

OFFSET 

48 

(30) 

SIGNED 

4 

TCBGRSO 

SAVE AREA FOR GENERAL REGISTER 0 


52 

(34) 

SIGNED 

4 

TCBGRS1 

SAVE AREA FOR GENERAL REGISTER 1 


56 

(38) 

SIGNED 

4 

TCBGRS2 

SAVE AREA FOR GENERAL REGISTER 2 


60 

(30 

SIGNED 

4 

TCBGRS3 

SAVE AREA FOR GENERAL REGISTER 3 


64 

(40) 

SIGNED 

4 

TCBGRS4 

SAVE AREA FOR GENERAL REGISTER 4 


68 

(44) 

SIGNED 

4 

TCBGRS5 

SAVE AREA FOR GENERAL REGISTER 5 


72 

(48) 

SIGNED 

4 

TCBGRS6 

SAVE AREA FOR GENERAL REGISTER 6 


76 

(40 

SIGNED 

4 

TCBGRS7 

SAVE AREA FOR GENERAL REGISTER 7 


80 

(50) 

SIGNED 

4 

TCBGRS8 

SAVE AREA FOR GENERAL REGISTER 8 


84 

(54) 

SIGNED 

4 

TCBGRS9 

SAVE AREA FOR GENERAL REGISTER 9 


"•88 

(58) 

SIGNED 

4 

TCBGRS10 

SAVE AREA FOR GENERAL REGISTER 10 

92 

(50 

SIGNED 

4 

TCBGRS11 

SAVE AREA FOR GENERAL REGISTER 11 



TCB 

212 


MVS/370 Debug Hdbk Vol 5 


TCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 

















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS _lYEI_ LENGTH NAME _ DESCRIPTION 


96 

(60) SIGNED 

4 

TCBGRS12 

SAVE AREA FOR GENERAL REGISTER 12 

100 

(64) SIGNED 

4 

TCBGRS13 

SAVE AREA FOR GENERAL REGISTER 13 

104 

(68) SIGNED 

4 

TCBGRS14 

SAVE AREA FOR GENERAL REGISTER 14 

108 

(60 SIGNED 

4 

TCBGRS15 

SAVE AREA FOR GENERAL REGISTER 15 

112 

(70) ADDRESS 

4 

TCBFSA 

ADDRESS OF THE FIRST PROBLEM PROGRAM 

SAVE AREA 

112 

(70) SIGNED 

1 


FIRST BYTE OF TCBFSA (0S/VS2) 

113 

(71) ADDRESS 

3 

TCBFSAB 

ADDRESS OF THE FIRST PROBLEM PROGRAM 

SAVE AREA 

116 

(74) ADDRESS 

4 

TCBTCB 

ADDRESS OF NEXT TCB OF LONER PRIORITY ON 
THE READY QUEUE 

120 

(78) ADDRESS 

4 

TCBTME 

ADDRESS OF THE TIMER QUEUE ELEMENT (TQE) 


1 . 


TCBTQET 

"X'80*"- IF ZERO, TASK TYPE TQE. IF ONE, 
REAL/NAIT TYPE TQE. 

124 

(70 ADDRESS 

4 

TCBJSTCB 

ADDRESS OF FIRST JOB STEP TCB OR OF THIS 
TCB IF KEY ZERO (0S/VS2) 

124 

(70 HEX 

1 

TCBR07C 

RESERVED. 

125 

(7D) ADDRESS 

3 

TCBJSTCA 

ADDRESS OF FIRST JOB STEP TCB OR OF THIS 
TCB IF KEY ZERO (0S/VS2) 

128 

(80) ADDRESS 

4 

TCBNTC 

ADDRESS OF THE TCB FOR THE TASK PREVI¬ 
OUSLY ATTACHED BY THE TASK THAT ATTACHED 
THIS TASK. FOR EXAMPLE, IF TASK A 
ATTACHED TASK B AND THEN TASK C, THIS 
FIELD IN TASK C*S TCB POINTS TO TASK B f S 
TCB, AND THIS FIELD IN TASK B'S TCB IS 
ZERO. 

132 

(84) ADDRESS 

4 

TCBOTC 

ADDRESS OF THE TCB FOR THE TASK (THE 


ORIGINATING TASK) THAT ATTACHED THIS 
TASK. THIS FIELD IS ZERO IN THE TCB FOR 
A SYSTEM TASK. 


TCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980 


1985 


TCB 

Data Area Descriptions 213 













Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


136 (88) ADDRESS 4 TCBLTC ADDRESS OF THE TCB FOR THE TASK LAST 

ATTACHED BY THIS TASK. NOTE IF A TASK 
(THE ORIGINATING TASK) HAS ATTACHED OTH¬ 
ER TASKS, THE TCB'S FOR THE OTHER TASKS 
ARE ON THE SUBTASK QUEUE OF THE ORIGI¬ 
NATING TASK. TCBLTC IN THE TCB FOR THE 
ORIGINATING TASK POINTS TO THE LAST TCB 
(THE TCB FOR THE LAST ATTACHED TASK) IN 
THE SUBTASK QUEUE. IN EACH TCB ON THE 
SUBTASK QUEUE, EXCEPT THE FIRST TCB, 
TCBNTC POINTS TO THE PRECEDING TCB ON 
THE QUEUE. 


140 

(80 ADDRESS 

4 

TCBIQE 

ADDRESS OF AN INTERRUPTION QUEUE ELEMENT 
(IQE) FOR SCHEDULING THE ETXR ROUTINE OF 
THE TASK THAT ATTACHED THIS TASK. 

144 

(90) ADDRESS 

4 

TCBECB 

ADDRESS OF THE ECB THAT WILL BE POSTED 

BY THE SUPERVISOR'S TASK TERMINATION 
ROUTINES WHEN NORMAL OR ABNORMAL TERMI¬ 
NATION OCCURS. 

148 

(94) BITSTRING 

1 

TCBTSFLG 

TIME SHARING FLAGS 


1 . 


TCBTSTSK 

"X*80'"— SWAPPED TIME SHARING TASK 
(0S/VS1) 


• l*i » » * » 


TCBSTPPR 

"X'40"*- TASK SHOULD BE MADE NONDIS- 
PATCHABLE VIA TCBSTPP WHEN IT IS NO LON¬ 
GER RUNNING A PRIVILEGED PROGRAM 


• • 1 * •••• 


TCBATT 

"X'20*"- TASK SHOULD NOT HAVE ATTENTION 
EXITS SCHEDULED ON IT BY EXIT EFFECTOR. 
THIS OFFSET FIXED BY ARCHITECTURE. 


• ••1 •••• 


TCBTIOTG 

"X'lO'"- PURGE TGET/TPUT AFTER ATTENTION 


•••• • • X» 


TCBDYDSP 

"X'02'"- M195 TASK IS MEMBER OF DYNAMIC 
DISPATCHING GROUP 


•X 


TCBCPUBN 

"X'Ol"'- FOR M195, ZERO MEANS I/O BOUND 
AND ONE MEANS CPU BOUND 

149 

(95) SIGNED 

1 

TCBSTPCT 

NUMBER OF SETTASK STARTS WHICH MUST BE 
ISSUED BEFORE TASK IS MADE DISPATCHABLE 
FIELD NOT RESTRICTED TO TSO 

TCB 




TCB 

214 

MVS/370 Debug Hdbk 

Vol 

5 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 






Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS _HE!_ LENGT H N A ME _BiSSBIEHSM 


150 

(96) SIGNED 

1 

TCBTSLP 

LIMIT PRIORITY OF TIME SHARING TASK 

151 

(97) BITSTRING 

1 

TCBTSDP 

DISPATCHING PRIORITY OF TIME SHARING 

TASK 

152 

(98) ADDRESS 

4 

TCBPQE 

POINTER TO DPQE MINUS 8 FOR THE JOB STEP 
(0S/VS2) 

156 

(90 ADDRESS 

4 

TCBAQE 

LIST ORIGIN OF AQE(S) FOR THIS TASK 
(0S/VS2) 

160 

(AO) ADDRESS 

4 

TCBSTAB 

ADDRESS OF THE CURRENT STAE CONTROL 

BLOCK 

160 

(AO) BITSTRING 

1 

TCBNSTAE 

FLAGS INTERNAL TO STAE ROUTINE 


1 • « • •••« 


TCBSTABE 

"X , 80 ,n - ABEND ENTERED BECAUSE OF ERROR 
IN STAE PROCESSING 


» 1 » * • * • • 


TCBQUIES 

"X'40'«- STAE INVOKED PURGE I/O ROUTINE 
WITH QUIESCE I/O OPTION 


• • 1 • •••• 


TCB33E 

"X'20'»- A 33E ABEND HAS OCCURRED FOR 
TASK (0S/VS2) 


• ••1 •••« 


TCBPPSUP 

"X»10*it- 1=SUPERVIS0R MODE,0 = PR0BLEM 
PROGRAM MODE INDICATOR TO SYNCH OF THE 
MODE OF THE USER EXIT (0S/VS2) 


• ••• X • • • 


TCBHALT 

n X*08 1 **— PURGE I/O ROUTINE DID NOT SUC¬ 
CESSFULLY QUIESCE I/O, BUT I/O WAS HALT¬ 
ED 


• ••• • 1 • • 


TCBSYNCH 

"X'04 ,w - SYNCH ISSUED BY ASIR TO SCHED¬ 
ULE EXIT ROUTINE (0S/VS2) 


> • *« • * t X 


TCBSTCUR 

"X'01 ,n - STAE RECURSION VALID (0S/VS2) 

161 

(Al) ADDRESS 

3 

TCBSTABB 

ADDRESS OF THE CURRENT STAE CONTROL 

BLOCK 

164 

(A4) ADDRESS 

4 

TCBTCT 

ADDRESS OF THE TIMING CONTROL TABLE 


(TCT) IF SYSTEM MANAGEMENT FACILITIES 
(SMF) DATA IS BEING COLLECTED FOR THE 
TASK. ZERO IF SMF DATA IS NOT BEING COL¬ 
LECTED FOR THE TASK OR FOR 0S/VS1, IF 
SMF IS NOT IN THE SYSTEM. 


TCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


TCB 

Data Area Descriptions 215 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


FLAG BYTE FOR TIMING CONTROL TABLE 
"X’80*"- IF ZERO, THE TCT CORE TABLE IS 
NOT TO BE UPDATED BY GETMAIN/FREEMAIN. 

IF ONE, THE TCT CORE TABLE IS TO BE 
UPDATED BY GETMAIN/FREEMAIN. 

ADDRESS OF THE TIMING CONTROL TABLE 
CTCT) IF SYSTEM MANAGEMENT FACILITIES 
(SMF) DATA IS BEING COLLECTED FOR THE 
TASK. ZERO IF SMF DATA IS NOT BEING COL¬ 
LECTED FOR THE TASK OR FOR 0S/VS1, IF 
SMF IS NOT IN THE SYSTEM. 


168 

(A8) ADDRESS 

4 

TCBUSER 

A WORD AVAILABLE TO THE USER 

172 

(AC) BITSTRING 

4 

TCBSCNDY 

SECONDARY NONDISPATCHABILITY BITS. IF 

ANY BIT IN THE FOLLOWING FOUR BYTES IS 

1, THE PRIMARY NONDISPATCHABILITY BIT 
(OFFSET 33.7 DECIMAL) IS 1, AND THE TASK 
IS NONDISPATCHABLE. 

172 

(AC) BITSTRING 

4 

TCBNDSP 

SAME AS TCBSCNDY 

172 

(AC) BITSTRING 

1 

TCBNDSPO 

BYTE 0 

173 

(AD) BITSTRING 

1 

TCBNDSP1 

BYTE 1 


1 • • • 


TCBDARTN 

n X'80 ,w - THE TASK IS TEMPORARILY NONDIS¬ 
PATCHABLE DAMAGE ASSESSMENT ROUTINE 
(DAR) 


X • • • * • i • 


TNONDISP 

"TCBDARTN"* ALIAS 


1 . 


TCBDARPN 

"X'40*«- THE TASK IS PERMANENTLY NONDIS¬ 
PATCHABLE DAMAGE ASSESSMENT ROUTINE 
(DAR) 


• X • • •••• 


PNONDISP 

"TCBDARPN"* ALIAS 


•«X• 


TCBRSTND 

" X '20*"- THE TASK IS TEMPORARILY NONDIS¬ 
PATCHABLE RECOVERY MANAGEMENT SUPPORT 

AND SYSTEM ERROR RECOVERY (RMS/SER) 


• • • 1 *••• 


TCBRSPND 

"X'lO’"- THE TASK IS PERMANENTLY NONDIS¬ 
PATCHABLE RECOVERY MANAGEMENT SUPPORT 

AND SYSTEM ERROR RECOVERY (RMS/SER) (IF 
THIS BIT IS ON THEN THE PREVIOUS BIT 

TCB 




TCB 

216 

MVS/370 Debug Hdbk 

Vol 

5 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


164 

(A4) 
1. . 

BITSTRING 

• « • • f 

1 

TCBTCTGF 

TCBSMFGF 

165 

(A5) 

ADDRESS 

3 

TCBTCTB 







Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


QFFS5T9_TYPE LE NGTH NAME _ DESCRIPTION 


. . 1 . . « 


TCBDDRND 


• • * i . 1 .. 


TCBTPSP 


4 4 4 4 4.1 . 


TCBPIEND 


4 4 4 4 4 4 4 l 


TCBABTIN 


174 (AE) BITSTRING 

lit* 4 4 4 4 

1 • • . » . . 


• 1 • 4 4 4 4 


4 4 4 1 » • • 

4 4 4 4 1 • • 

• • • • • 1 • 

• * • 4 4 4 1 


1 TCBNDSP2 
TCBABD 
TCBSTPP 

TCBNDSVC 

TCBNDTS 

TCBIWAIT 

TCBOWAIT 

TCBDSS 

TCBABE 


175 (AF) BITSTRING 


1 TCBNDSP3 
TCBLJSND 


TCBSRBND 


MUST BE ON TOO) 

W X'08'"- THE TASK IS IN DEVICE ALLO¬ 
CATION AND DYNAMIC DEVICE RECONFIGURA¬ 
TION (DDR) HAS MADE IT NONDISPATCHABLE 
RECOVERY MANAGEMENT SUPPORT AND SYSTEM 
ERROR RECOVERY (RMS/SER) (0S/VS1) 
"X'04 ,n - DISPATCHING OF TCAM TASK MUST 
BE DELAYED UNTIL TCAM I/O APPENDAGE OR 
SVC ROUTINE HAS COMPLETED EXECUTION 
(TCAM IN MULTIPROCESSING ENVIRONMENT) 
n X , 02 ,n - SRB IS TO BE SCHEDULED TO PER¬ 
FORM PIE/PICA PROCESSING (FIRST LEVEL 
INTERRUPT HANDLER) 

"X'Ol*"- THE TASK IS TEMPORARILY NONDIS¬ 
PATCHABLE HHILE BEING SET UP FOR ABTERM 
(0S/VS2) 

BYTE 2 

"X»80"*- ABDUMP IS PROCESSING (OS/VS1) 
"X*40 ,n - TASK SET NONDISPATCHABLE BY 
SETTASK 

"X'20*"- TASK IS NONDISPATCHABLE BECAUSE 
SVC DUMP IS EXECUTING FOR ANOTHER TASK 
B X* 10’ n — TASK IS NONDISPATCHABLE BECAUSE 
IT IS BEING SWAPPED OUT 
«X*08»"- TASK IS NONDISPATCHABLE DUE TO 
AN INPUT WAIT 

"X'04*"- TASK IS NONDISPATCHABLE DUE TO 
AN OUTPUT WAIT 

"X * 02 *”— DYNAMIC SUPPORT SYSTEM (DSS) 

HAS SET THIS TASK NONDISPATCHABLE 
"X'Ol 1 "- ABEND ROUTINE WAS ENTERED FOR 
THIS TASK WHILE THE DCB FOR SYSABEND (OR 
SYSUDUMP) DATA SET WAS BEING OPENED FOR 
ANOTHER TASK (OS/VS1) 

BYTE 3 

"X'80 ,n - TASK IS ABENDING AND NONDIS¬ 
PATCHABLE BECAUSE IT HAS A JOB STEP SUB¬ 
TASK. TCBONDSP MUST ALSO BE ON. 

(0S/VS2) 

"X'20'"- TCB NONDISPATCHABLE BECAUSE 


TCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


TCB 

Data Area Descriptions 217 




Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _BEgSBIEIISM 

SRB'S ARE STOPPED (0S/VS2) 

"X‘10' n - SET NONDISPATCHABLE SO THAT 
SLIP/PER CAN ALTER RB PSW PER BIT 
C0S/VS2) 

"X'08'"- STAGE 3 EXIT EFFECTOR MUST RUN 
TO SYNCHRONIZE ATTENTION INTERRUPT 
(0S/VS2) 

"X'04"*- TSO AUTHORIZED REQUEST PROCESS¬ 
ING ACTIVE 

"X'01*"- INITIATOR SETS THIS BIT TO PRE¬ 
VENT JOB STEP EXECUTION IN ORDER TO DO 
CANCEL PROCESSING (CAN CANCEL LOOP) 
(0S/VS2) 


176 

(BO) 

SIGNED 

4 

TCBMDIDS 

RESERVED FOR MODEL-DEPENDENT SUPPORT AND 
FOR IBM PROPRIETARY PROGRAMMING SUPPORT 

180 

(B4) 

ADDRESS 

4 

TCBJSCB 

ADDRESS OF THE JOB STEP CONTROL BLOCK 

180 

(B4) 

BITSTRING 

1 

TCBRECDE 

ABEND RECURSION BYTE 


1... 

• • • • 


TCBREC 

"X'80'"- VALID REENTRY TO ABEND IF 
NON-ZERO VALUE IN FOLLOWING 7 BITS 


• • • • 

...1 


TCBOPEN 

"X'01»"- OPEN DUMP DATA SET 


t • t t 

..1. 


TCBCLOSD 

"X«02 ,n - CLOSE DIRECT SYSOUT ON TAPE 


• • • • 

..11 


TCBCLOSE 

"X'03 ,B - CLOSE OPEN DATA SETS 


• • • • 

.1.. 


TCBCLOSF 

n X*04 ,n - RESERVED 


• • • • 

.1.1 


TCBGREC 

"X'05"*- GRAPHICS 


# • • • 

.111 


TCBADUMP 

"X'07ABDUMP 


• • • • 

1... 


TCBPTAXE 

"X'08*"- PURGE TAXE 


• • • • 

1. .1 


TCBMESG 

"X'09*"- MESSAGE RECURSION 


• • • • 

1.1. 


TCBDYNAM 

"X'OA*"- DD-DYNAM TIOT CLEANUP 


• t • • 

1.11 


TCBDAMSG 

"X'OB*"- ABEND IS ISSUING A WTOR ASKING 
WHETHER THE JOB STEP TASK SHOULD WAIT 

FOR THE DUMP AREA (0S/VS1) 


• t • • 

11.. 


TCBQTIP 

"X'OC'"- PURGE TSO INTERPARTITION POSTS 


• • • • 

11.1 


TCBTCAMP 

"X'OD'"- PURGE TCAM INTERPARTITION POSTS 


# • • • 

111. 


TCBINDRC 

"X*OE* n - INDICATIVE DUMP (LOAD 8 OF 
ABEND) HAS ABENDED. ABEND WILL HANDLE 
THIS ABEND. (0S/VS1) 


• • • • 

1111 


TCBSAVCD 

"X'OF"*- ASIR RECURSION. SAVE OLD COM- 

TCB 





TCB 

218 

MVS/370 Debug Hdbk 

Vol 

5 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


• •*1 »• * • 


«««» 1 .. . 


* • i • • 1 »» 

.. •« ... 1 


TCBSLPER 


TCBS3MR 


TCBAREQ 

TCBNDINT 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME 


•••X •••• 

TCBTYP1W 

• •1* •••• 

TCBWTPSE 


..1. 

.. .1 

TCBVTAM1 

..1. 

. .1. 

TCBVTAM2 

..1. 

. .11 

TCBVTAM3 

..1. 

.1.. 

TCBVTAM4 

..11 

• t t • 

TCBNOSTA 

..11 

...1 

TCBSTRET 

..11 

. .1. 

TCBCONVR 

..11 

. .11 

TCBDARET 

..11 

.1. . 

TCBTYP1R 

..11 

.1.1 

TCBNEWRB 

.1.. 

• • • • 

TCBMCCNS 


181 (B5) ADDRESS 3 TCBJSCBB 


DESCRIPTION 
PLETION CODE 

"X'10"*- TYPE 1 MESSAGE WRITE TO PRO¬ 
GRAMMER 

n X' 20* n — WRITE-TO-PROGRAMMER (WTP) 
FAILED. JOB STEP TIMER EXPIRED DURING 
JOB STEP ABEND AND THE STAE EXIT IS 
DENIED. (OS/VS1) 

"X»21"*- ABEND IS ENTERING FIRST VTAM 
INTERFACE/ ISTRAAA1, FOR TERMINATION OF 
TASK OR SUBTASK (OS/VS1) 

"X'22‘"- ABEND IS ENTERING SECOND VTAM 
INTERFACE/ ISTRAAA2, BECAUSE ISTRAAA1 
ABENDED (OS/VS1) 

"X'23 ,n - ABEND IS ENTERING FIRST VTAM 
INTERFACE/ ISTRAAAO/ BECAUSE VTAM ABEND¬ 
ED COS/VS1) 

"X'24"*- ABEND IS ENTERING SECOND VTAM 
INTERFACE/ ISTRAAA2/ BECAUSE ISTRAAAO 
ABENDED (OS/VS1) 

"X*30"*- STAE/STAI NOT TO BE HONORED 
"X'31'"- RETURN FROM DUMP PROCESSING 
n X , 32'"- CONVERT TO STEP ABEND 
"X'33"*- RETURN FROM DAMAGE ASSESSMENT 
ROUTINES 

"X'34*"- RETURN FROM TYPE 1 MESSAGE MOD¬ 
ULE 

■X'35'"- ABEND ISSUED SVC 13 TO TRANSFER 
CONTROL (XCTL) TO A NON-ABEND MODULE 
"X'40"*- A MUST COMPLETE TASK HAS ABNOR¬ 
MALLY TERMINATED WITHOUT ENOUGH STORAGE 
FOR 2 RB'S FOR A WTOR ASKING WHETHER THE 
TASK'S RESOURCES ARE CRITICAL. THE 
RESOURCES ARE ASSUMED TO BE CRITICAL/ 

AND THE PARTITION IS MARKED PERMANENTLY 
NONDISPATCHABL E. (OS/VS1) 

ADDRESS OF THE JOB STEP CONTROL BLOCK 


184 (B8) ADDRESS 4 TCBSSAT ADDRESS OF THE SUBSYSTEM AFFINITY TABLE 

(SSAT). SERIALIZATION TCBACTIV. OWNER¬ 
SHIP TASK MANAGEMENT. 


TCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


TCB 

Data Area Descriptions 219 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


PPFSETS _IYRE_ LENGTH NAME _ DESCRIPTION 


188 

(BC) ADDRESS 

4 

TCBI0BRC 

ADDRESS OF IOB RESTORE CHAIN FOR 1/0 
QUIESCED BY EOT 

192 

(CO) ADDRESS 

4 

TCBEXCPD 

ADDRESS OF EXCP DEBUG AREA (0S/VS2) 

196 

(C4) ADDRESS 

4 

TCBEXT1 

ADDRESS OF OS-OS/VS COMMON TCB EXTENSION 

196 

(C4) HEX 

1 

TCBR0C4 

RESERVED. 

197 

(C5) ADDRESS 

3 

TCBEXT1A 

ADDRESS OF OS-OS/VS COMMON TCB EXTENSION 

0S/VS1 

- 0S/VS2 COMMON 

SECTION 



200 

(C8) BITSTRING 

4 

TCBBITS 

FLAG BYTES. IF A BIT IN THE FOLLOWING 

TWO BYTES IS SET TO 1, THE PRIMARY NON- 
DISPATCHABILITY BIT (OFFSET 33.7 DECI¬ 
MAL) IS SET TO 1, AND THE TASK IS 
NONDISPATCHABLE. 

200 

(C8) BITSTRING 

1 

TCBNDSP4 

SECONDARY NONDISPATCHABILITY FLAGS COM¬ 
MON TO OS/VS1 AND 0S/VS2. COORDINATED 
WITH PRIMARY NONDISPATCHABILITY FLAG 
TCBPNDSP. THIS BYTE IS NOT CURRENTLY 
SUPPORTED BY 0S/VS2. 

201 

(C9) BITSTRING 

1 

TCBNDSP5 

SECONDARY NONDISPATCHABILITY FLAGS 

UNIQUE TO OS/VS1 OR 0S/VS2. COORDINATED 
WITH PRIMARY NONDISPATCHABILITY FLAG 
TCBPNDSP. THIS BYTE IS NOT CURRENTLY 
SUPPORTED BY 0S/VS2. 

202 

(CA) BITSTRING 

1 

TCBFLGS6 

TASK-RELATED FLAGS 


1 • • • • • • • 


TCBRV 

"X'80THE PARTITION IS FIXED IN REAL 
STORAGE. VIRTUAL ADDRESSES ARE EQUAL TO 
REAL ADDRESSES. 


• la* •••• 


TCBPIE17 

W X'40'“- PAGE FAULT INTERRUPT IS TO BE 
PASSED TO THE TASK'S INTERRUPT EXIT AND 
AN 8-BYTE PICA IS IN EFFECT FOR THIS 

TASK (0S/VS2) 


» • 1 • •••• 


TCBCPU 

"X'20""- TASK IS CPU-BOUND MEMBER OF 


TCB 

220 


MVS/370 Debug Hdbk Vol 5 


TCB 

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Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


AEESE1S_DEE_ LENGTH NAME _SESC R EEI M M 


...1 


• • • • 


• • • • 


. 1 .. 


• • • • 


.. 1 . 


* ■ • • * . « 1 

203 (CB) BITSTRING 

1. . . tat* 


.. 1 . 


«... 


...1 


tat* 


1 


• • • 


• • • • 

• ♦ 4 • 



t ♦ • • 


• • • 


1 


AUTOMATIC PRIORITY GROUP (APG) (0S/VS2) 
TCBSPVLK "X'10*"- TASK SCHEDULED FOR ABTERM WHILE 

OWNING SUPERVISOR LOCK (0S/VS2) 

TCBMIGR "X'04‘"- REGION SELECTED FOR MIGRATION 

FROM PRIMARY PAGING DEVICE (0S/VS2) 
TCBAPG "X'02'"- TASK IS IN AUTOMATIC PRIORITY 

GROUP (APG) (0S/VS2) 

TCBNTJS "X'01 1 "- JOB STEP TASK BUT NOT HIGHEST 

IN FAILING TREE (0S/VS2) 

TCBFLGS7 TASK-RELATED FLAGS 

TCBGPECB "X'80'"- TASK IS IN AN ECB WAIT FOR A 

GETPART (0S/VS2) 

TCBSVCSP "X»20 ,n - IF 1, SVC SCREENING IS TO BE 

PROPAGATED TO SUBTASKS 

TCBSTACK "X'lO 1 "- SET IN JOB STEP TCB TO INDICATE 

THAT A TASK IN THE JOB STEP IS IN SERIAL 
ABEND PROCESSING. USED IN CONJUNCTION 
WITH TCBFOINP. C0S/VS2) 

TCBSVCS "X'08'"- IF 1, SVC SCREENING IS REQUIRED 

FOR THE TASK. THIS OFFSET FIXED BY 
ARCHITECTURE. 

TCBRSTSK w X'04 ,n - RESIDENT SYSTEM TASK (0S/VS2) 

TCBADMP "X'02 ,w - ALL OTHER TASKS IN JOB STEP 

HAVE BEEN SET NONDISPATCHABLE BY ABDUMP. 
THIS BIT IS SET TO CONTROL JOB STEP DUR¬ 
ING THE DUMPING PROCESS. (0S/VS2) 
TCBGTOFM "X , 01 ,w - GENERALIZED TRACE FACILITY 

(GTF) TRACING HAS BEEN TEMPORARILY DISA¬ 
BLED UNDER THIS TASK 


(CC) BITSTRING 

1 TCBDAR 

DAMAGE ASSESSMENT ROUTINE (DAR) FLAGS 

lit* •••• 

TCBDARP 

"X'80"*- PRIMARY DAR RECURSION. DAR HAS 
BEEN ENTERED FOR THIS TASK. 

i 1 • * •••• 

TCBDARS 

"X'40 ,w - SECONDARY DAR RECURSION. IF DAR 
IS REENTERED, THIS TASK WILL BE SET NON¬ 
DISPATCHABLE. 

•• 1 * •••• 

TCBDARD 

"X'20'"- A DUMP HAS BEEN REQUESTED FOR A 
WRITER OR SCHEDULER ABEND, AND THE USER 
HAS PROVIDED NO SYSABEND DD CARD 
(OS/VS1) 

• ••1 i » » • 

TCBDARC 

"X*10 RECURSION PERMITTED IN CLOSE 


TCB 

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TCB 

Data Area Descriptions 221 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 






AFTER DAR PROCESSING COMPLETED (PCP) 


• ••1 •••• 


TCBDARMC 

"X'lO'"- DAR HAS BEEN ENTERED TO HANDLE 

A VALID RECURSION IN MUST-COMPLETE STA¬ 
TUS THROUGH ABEND 


- 1 ... 


TCBDARO 

"X'08"*- SYSTEM ERROR TASK IS FAILING. 
DAR DUMP SHOULD NOT REQUEST ANY ERROR 
RECOVERY PROCEDURE (ERP) PROCESSING. 


• ••• » 1 • • 


TCBDARWT 

"X'04"*- A WT0 OPERATION WITH A 'REIN¬ 
STATEMENT FAILURE' MESSAGE IS IN PROCESS 
FOR DAR 


• • • • • * 1 • 


TCBDARMS 

"X'02"'- WTO OPERATION WITH A *DAR IN 
PROGRESS' MESSAGE IS IN PROCESS FOR DAR 
(0S/VS1) 


• ••• • * • 1 


TCBEXSVC 

"X'01THE DUMP SVC ROUTINE IS EXECUT¬ 
ING FOR THIS TASK 

205 

(CD) HEX 

1 

TCBR0CD 

RESERVED. 

206 

(CE) SIGNED 

1 

TCBSYSCT 

NUMBER OF OUTSTANDING SYS¬ 
TEM-MUST-COMPLETE REQUESTS 

207 

(CF) SIGNED 

1 

TCBSTMCT 

NUMBER OF OUTSTANDING STEP-MUST-COMPLETE 
REQUESTS 

208 

(DO) ADDRESS 

4 

TCBEXT2 

ADDRESS OF 0S/VS1 0S/VS2 COMMON EXTEN¬ 
SION 

208 

(DO) HEX 

1 


FIRST BYTE OF TCBEXT2 

209 

(Dl) ADDRESS 

3 

TCBEXT2A 

ADDRESS OF OS/VS1 0S/VS2 COMMON EXTEN¬ 
SION 

0S/VS2 

TCB OVERLAY 





212 

(D4) SIGNED 

4 

TCBAECB 

ABEND ECB. POSTED BY A MOTHER TASK IN 
RTM2 PROCESSING WHEN A DAUGHTER IS WAIT¬ 
ING TO TERMINATE IT. 

216 

(D8) ADDRESS 

4 

TCBXSB 

ADDRESS OF CURRENT XSB FOR TASK. SERIAL¬ 
IZATION TCBACTIV. OWNERSHIP SUPERVISOR. 


TCB 

222 


MVS/370 Debug Hdbk Vol 5 


TCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


220 

(DC) ADDRESS 

4 

TCBBACK 

ADDRESS OF PREVIOUS TCB ON READY QUEUE. 
ZERO IN TOP TCB. 

224 

(E0) ADDRESS 

4 

TCBRTWA 

POINTER TO CURRENT RTM2 WORK AREA 

228 

(E4) ADDRESS 

4 

TCBNSSP 

NORMAL STACK SAVE AREA POINTER. SERIAL¬ 
IZATION TCBACTIV. OWNERSHIP SUPERVISOR. 


X • • • 


TCBNSSQA 

"X'80'"- NORMAL STACK SAVED IN SQA INDI¬ 
CATOR. 

232 

(E8) ADDRESS 

4 

TCBXLAS 

ASCB ADDRESS OF THE CML LOCK HELD WHILE 
TCB SUSPENDED OR INTERRUPTED. SERIALIZA¬ 
TION TCBACTIV. OWNERSHIP SUPERVISOR. 

236 

(EC) CHARACTER 

1 

TCBABCUR 

ABEND RECURSION BYTE 

237 

(ED) SIGNED 

1 

TCBROED 

RESERVED. 

238 

(EE) CHARACTER 

1 

TCBTID 

TASK ID NUMBER 


1111 1111 


TCBPAGID 

"255"- ID FOR PAGING SUPERVISOR TASK 


1111 111. 


TCBSYERR 

"254"- ID FOR SYSTEM ERROR TASK 


1111 11.1 


TCBCOMM 

"253"- ID FOR COMMUNCIATIONS TASK 


1111 11.. 


TCBIORMS 

"252"- ID FOR I/O RMS TASK 


1111 1.11 


TCBMASTR 

"251"- ID FOR MASTER SCHEDULER TASK 


1111 1.1. 


TCBJES 

"250"- ID FOR JOB ENTRY SUBSYSTEM (JES) 
MONITOR TASK 


1111 1..1 


TCBDSSID 

"249"- ID FOR DYNAMIC SUPPORT SYSTEM 
(DSS) TASK 


1111 1... 


TCBLOGID 

"248"- ID FOR SYSTEM LOG TASK 

239 

(EF) HEX 

1 

TCBROEF 

RESERVED. 

240 

(F0) SIGNED 

4 

TCBXSCT 

DISPATCHER INTERSECT CONTROL WORD 

240 

(F0) BITSTRING 

1 

TCBXSCT1 

FLAG BYTE 


1 • » • • • • « 


TCBACTIV 

"X'80'"- BIT ON MEANS THIS TCB IS CUR¬ 
RENTLY ACTIVE ON A CPU. USED TO SYNCHRO¬ 
NIZE SOME STATUS SAVING AND 
DISPATCHABILITY INDICATORS WHEN ACTIVE 

OR NOT UNDER THE LOCAL LOCK. 


• X • • • # *» 


TCBS3A 

"X'40'"- STAGE 3 EXIT EFFEC- 
TOR/RESUME/TCTL INTERSECT FLAG 


• * 1 • • • • • 


TCBLLREQ 

"X*20 *TASK REQUESTED LOCAL LOCK 


TCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


TCB 

Data Area Descriptions 223 







Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


241 

(FI) 

BITSTRING 

1 

TCBXSCT2 

FLAG BYTE 


1.. 

. 


TCBCMLF 

"X'80 ,n - CML RESOURCE MANAGER PROCESSING 
COMPLETE FOR THIS CML LOCK HOLDER. 


.1. 

. 


TCBCMLR 

w X , 40 ,n - CML LOCK HOLDER READY TO RUN 

242 

(F2) 

SIGNED 

2 

TCBCCPVI 

ID OF THE CURRENT CPU RUNNING THIS TASK. 
USED FOR RECOVERY AND CPU AFFINITY. 

244 

(F4) 

ADDRESS 

4 

TCBFOE 

ADDRESS OF FIRST FIX OWNERSHIP ELEMENT 
(FOE) IN LIST FOR THIS TASK 

244 

( F4) 

HEX 

1 

TCBR0F4 

RESERVED. 

245 

(F5) 

ADDRESS 

3 

TCBFOEA 

ADDRESS OF FIRST FIX OWNERSHIP ELEMENT 
(FOE) IN LIST FOR THIS TASK 

248 

(F8) 

ADDRESS 

4 

TCBSWA 

ADDRESS OF FIRST SCHEDULER WORK AREA 
(SWA) SPQE ON SWA SPQE CHAIN 

252 

(FC) 

ADDRESS 

4 

TCBSTAWA 

ESTAE ROUTINE WORK AREA POINTER 

256 

(100) 

CHARACTER 

4 

TCBTCBID 

CONTAINS BLOCK ID *TCB * 

260 

(104) 

ADDRESS 

4 

TCBRTM12 

POINTER TO PARAMETER AREAS PASSED FROM 
RTM1 TO RTM2 

264 

(108) 

HEX 

4 

TCBESTAE 

AREA TO CONTAIN RECOVERY DATA FOR RTM 

264 

(108) 

CHARACTER 

1 

TCBSCBKY 

KEY IN WHICH SYNCH IS TO PASS CONTROL TO 
THE USER EXIT 

265 

(109) 

BITSTRING 

1 

TCBESTRM 

ESTAE TERM OPTIONS 


1.. 

• • ♦ • • 


TCBETERM 

"X'80 ,n - ESTAE EXIT ENTERED WITH TERM 
OPTION 


.1. 

• • » ft ft 


TCBSTAFX 

"X'40 *SERIALIZED BY TCB ACTIVE 

266 

(10A) 

SIGNED 

1 

TCBERTYP 

TYPE OF ERROR CAUSING ENTRY TO THE RTM. 
SET BY RTM1. 

267 

(10B) 

SIGNED 

1 

TCBMODE 

MASK INDICATING MODE OF SYSTEM AT TIME 

OF ERROR. SEE IHART1W/MODE FOR INDIVID¬ 
UAL BIT DEFINITIONS. 


TCB 

224 


MVS/370 Debug Hdbk Vol 5 


TCB 

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Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


268 (IOC) ADDRESS 4 TCBUKYSP ADDRESS OF SPQE'S FOR SUBPOOLS 229 AND 

230 (USER KEY STORAGE IN THE PRIVATE 
AREA) 


272 (110) SIGNED 2 TCBSEQNO DISPATCHING SEQUENCE NUMBER 

274 (112) BITSTRING 2 TCBAFFN CPU AFFINITY INDICATOR 


276 (114) BITSTRING 1 TCBFBYT1 

1. TCBEOTFM 


.1. TCBRTM1E 

. .1. TCBNDIOS 


•••1 . »•. 

•»•. 1 ««• 
*. • • * 1 ■ • 
< • • • .. 1 . 


TCBPGNLY 

TCBRTM2 

TCBEOT 

TCBSATTN 

TCBLLH 


277 (115) BITSTRING 1 TCBFBYT2 

1. TCBCNCB 


FLAG BYTE. SERIALIZATION TCBACTIV OR 
TASK NONDISPATCHABLE AND LOCAL LOCK 
"X^O 1 "- END OF TASK FLAG FOR FREEMAIN. 
SET TO 1 BY TASK TERMINATION AT START OF 
TERMINATION PROCESSING AND RESET TO 0 AT 
FINISH. INDICATES THAT A FREEMAIN ON A 
BLOCK OF LOCAL STORAGE THAT IS STILL 
FIXED BY RSM SHOULD RESULT IN A RETURN 
CODE OF 8 RATHER THAN ABNORMAL TERMI¬ 
NATION. 

"X , 40 ,n - RTM1 IS CURRENTLY PROCESSING 
EUT FRR'S FOR THIS TASK 
"X *20' n — TASK HAS BEEN SET NONDISPATCHA¬ 
BLE VIA STATUSND WHILE SVC 16 (PURGE) 
SCANS THE RB CHAIN PURGING APPEND¬ 
AGE-SCHEDULED ASYNCHRONOUS EXIT ROUTINES 
RUNNING UNDER AN IRB/RQE OR NON-RESIDENT 
ERP'S RUNNING UNDER THE SIRB. 

"X'10'"- SET BY RTM2 TO INDICATE ONLY 
PURGE PHASE TO BE PERFORMED 
"X*08 ,w - SET BY RTM2 TO INDICATE RTM2 
HAS BEEN ENTERED FOR THIS TASK 
"X'04*"- SET BY RTM2 TO INDICATE TO EXIT 
THAT END OF TASK PROCESSING IS COMPLETE 
"X'02'"- SYNCHRONIZATION OF ATTENTION 
INTERRUPT REQUIRED BY EXIT PROLOG 
"X'Ol*"- LOCALLY LOCKED TCB HAS PAGE 
FAULTED, AND I/O IS REQUIRED (FIRST LEV¬ 
EL INTERRUPT HANDLER) 

FLAG BYTE. SERIALIZATION TCBACTIV OR 
TASK NONDISPATCHABLE AND LOCAL LOCK 
"X’aO*"- SET BY RTM2 IN THE JOB STEP TCB 
WHEN IT HAS BEEN ENTERED ON THE TCB FOR 


TCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


TCB 

Data Area Descriptions 225 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 







AN X22 ABEND 


.1. 

• • • • • 


TCBFMW 

n X'40* n— MOTHER WAITING FLAG. TURNED ON 
IN A SUBTASK IN RTM2 PROCESSING WHEN AN 
ANCESTOR TASK IS WAITING TO ABEND IT. 


. .1 

• * ' * * 


TCBFDW 

"X'20"*- DAUGHTER WAITING FLAG. TURNED 

ON IN A MOTHER TASK IN RTM2 PROCESSING 
WHEN A DAUGHTER IS WAITING TO ABEND IT. 


• • • i 

1 .... 


TCBFPRAP 

"X'10'"- SET BY RTM2 TO PREVENT PERCOLA¬ 
TION TO THE TASK OF AN ASYNCHRONOUS 

ABEND 


• • ♦ 

. 1... 


TCBSSSYN 

n X'08 ,n - SYNCHRONIZED STATUS STOP PEND¬ 
ING FOR THIS TCB 


• • • 

. .1.. 


TCBECBNV 

"X'04'"- IF 1, ECB POINTED TO BY TCBECB 
IS NOT TO BE VALIDITY CHECKED. IF 0, ECB 
POINTED TO BY TCBECB IS TO BE VALIDITY 
CHECKED. 


• • • 

• • • 1 • 


TCBSSPC 

"X'02'"- STATUS STOP PENDING,TASK HOLDS 

A CML LOCK 


• • • 

. ... 1 


TCBRTM1C 

"X'Ol"*- A TASK WITH EUT FRRS HAS BEEN 
CANCELLED. THIS FLAG PASSES THE CANCEL 
REQUEST FROM RTM1 TO RTM2. 

278 

(116) 

BITSTRING 

1 

TCBFBYT3 

FLAG BYTE 


1.. 

• • • • • 


TCBEXP 

n X'80* w — EXPANDED VERSION OF THE TCB 

279 

(117) 

BITSTRING 

1 

TCBR117 

RESERVED. 

280 

(118) 

ADDRESS 

4 

TCBRPT 

ADDRESS OF RADIX PARTITION TREE FOR 

LOCAL STORAGE MANAGEMENT 

284 

(11C) 

ADDRESS 

4 

TCBVAT 

ADDRESS OF THE VAT (VSAM). THERE IS ONE 
VAT PER JOB STEP TCB. 

288 

(120) 

ADDRESS 

4 

TCBSWASA 

ADDRESS OF SAVE AREA USED BY SWA MANAGER 

292 

(124) 

ADDRESS 

4 

TCBSVCA2 

ADDRESS OF SVC SCREENING TABLE 

296 

(128) 

CHARACTER 

1 

TCBR128(12) 

RESERVED. 

308 

(134) 

SIGNED 

4 

TCBGRES 

TASK GLOBAL RESOURCE COUNT NUMBER OF 
GLOBAL RESOURCES OWNED BY THIS TASK 

312 

(138) 

HEX 

19 

TCBR138 

RESERVED FOR EXPANSION 


TCB 

226 


MVS/370 Debug Hdbk Vol 5 


TCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 







Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


331 

(14B) 

• • • 

• • • 

BITSTRING 
. ...1 
. ...1 
. ...1 

1 

TCBLEVEL 

TCBVS01A 

TCBVS01B 

TCBVERS 

LEVEL NUMBER OF TCB 
"X'Ol'"- JBB1337 FEATURE 
"X'Ol*"- JBB1356 
"X'Ol"*- LEVEL OF THIS MAPPING 

332 

(140 

ADDRESS 

4 

TCBBDT 

ADDRESS OF BDT'S GSD LINKAGE CONTROL 
BLOCK 

336 

(150) 

SIGNED 

4 

TCBNDAXP 

COUNT THE NUMBER OF CONSECUTIVE DIS¬ 
PATCHES REQUIRED ON A CP BEFORE THE TASK 
CAN BE DISPATCHED ON AN AXP. 

340 

(154) 

ADDRESS 

4 

TCBSENV 

ADDRESS OF ACEE FOR THE TASK. THE ACEE 
DESCRIBES THE RACF AUTHORIZATION FOR THE 
TASK. OMNER> RACF SERIALIZATIONS NONE, 
ONLY UPDATED BY TASK ITSELF 

344 

(158) 

FLOATING 

8 

TCBMNLEN 

"X-TCB"- LENGTH OF MAIN SECTION OF TCB 

0S/VS1 - 0S/VS2 COMMON 
ADDRESS OF EXTENSION IS 

EXTENSION 

IN TCBEXT2 



0 

(0) 

STRUCTURE 

0 

TCBXTNT2 

, START OF EXTENSION 

0 

(0) 

ADDRESS 

4 

TCBGTF 

ADDRESS OF GENERALIZED TRACE FACILITY 
(GTF) TEMPORARY TRACE BUFFER 


(0) BITSTRING 

i 

TCBTFLG 

GTF FLAG BYTE 

1 . 


TCBASYNC 

"X*80'"- GTF ASYNCHRONOUS GATHER ROUTINE 
IS IN CONTROL 

* 1 • • •••• 


TCBERRTN 

"X*40'"— GTF ASYNCHRONOUS GATHER ERROR 
ROUTINE IS IN CONTROL 

• • 1 • •••• 


TCBDSPIT 

”X'20 ,m - MACHINE CHECK INTERRUPTION HAN¬ 
DLER SHOULD UNCONDITIONALLY BRANCH TO 

THE DISPATCHER 

(1) ADDRESS 

3 

TCBGTFA 

ADDRESS OF GTF TEMPORARY TRACE BUFFER 


TCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


TCB 

Data Area Descriptions 227 












Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


4 

5 

(4) SIGNED 

(5) BITSTRING 

i 

3 

TCBR004X 

TCBRCMP 

RESERVED. 

MOST RECENT ABEND COMPLETION CODE (IN¬ 
CLUDING VALID RECURSIONS IN STAE) 

8 

(8) ADDRESS 

4 

TCBEVENT 

ADDRESS OF EVENT TABLES QUEUE 

12 

(C) SIGNED 

4 

TCBRTMCT 

COUNT OF TOKENS USED FOR ESTAE. SERIAL¬ 
IZATION CS. OWNERSHIP RTM. 

16 

(10) ADDRESS 

4 

TCBTQE 

ADDRESS OF A REUSABLE TASK-RELATED TQE 
(0S/VS2) 

20 

(14) ADDRESS 

4 

TCBCAUF 

ADDRESS OF SUBSYSTEM FACILITY CONTROL 
BLOCK (0S/VS2) 

24 

(18) ADDRESS 

1 • • • •••• 

4 

TCBPERCP 

TCBRCVRY 

POINTER TO A QUEUE OF SPIS. AN SPI 
REPRESENTS THE PERCOLATION OF AN SRB'S 
FRR TO THE RELATED TASK. SERIALIZATION 
TCBACTIV OR TASK NONDISPATCHABLE AND 
LOCAL LOCK. OWNERSHIP RTM. 

"X*80»"- TASK IS IN RECOVERY. SERIALIZA¬ 
TION TCBACTIV. OWNERSHIP RTM. 

28 

(1C) SIGNED 

4 

TCBPERCT 

COUNT OF SRB MODE FRRS WAITING TO PERCO¬ 
LATE TO THIS TASK, BUT NOT REPRESENTED 

IN SPI QUEUE (TCBPERCP). SERIALIZATION 
TCBACTIV OR TASK NONDISPATCHABLE AND 
LOCAL LOCK. OWNERSHIP RTM. 

32 

(20) FLOATING 
• • 1 • *••• 

8 

TCBX2LEN 

TCBLEN 

FORCE LENGTH EQUATE TO DOUBLE WORD 
"X-TCBXTNT2"LENGTH OF COMMON EXTENSION 
"TCBPXLEN+TCBMNLEN+TCBX2LEN W - TCB LENGTH 


INCLUDING PREFIX (VALID IF SYS=A0S1 OR 
SYS=A0S2, BUT NOT VALID IF SYS=BOTH) END 
OF TCB 


TCB 

228 


MVS/370 Debug Hdbk Vol 5 


TCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 









Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 

CROSS REFERENCE 


HEX HEX HEX HEX HEX HEX 


NAME 

OFFSET 

VALUE 

NAME 

OFFSET 

VALUE 

■Hi 

OFFSET 

VALUE 

PNONDISP 

AD 

40 

TCBCONVR 

B4 

32 

TCBEVENT 

8 


TCB 

0 

20 

TCBCPP 

10 

20 

TCBEXCPD 

CO 


TCBABCUR 

EC 


TCBCPU 

CA 

20 

TCBEXP 

116 

80 

TCBABD 

AE 

80 

TCBCPUBN 

94 

01 

TCBEXSVC 

CC 

01 

TCBABE 

AE 

01 

TCBCREQ 

10 

80 

TCBEXT1 

C4 


TCBABF 

14 


TCBCSTEP 

10 

40 

TCBEXT1A 

C5 


TCBABGM 

IF 

10 

TCBCWTO 

10 

04 

TCBEXT2 

DO 


TCBABTIN 

AD 

01 

TCBDAM5G 

B4 

OB 

TCBEXT2A 

D1 


TCBABTRM 

IF 

20 

TCBDAR 

CC 


TCBFA 

ID 

80 

TCBABWF 

21 

40 

TCBDARC 

CC 

10 

TCBFABOP 

IE 

20 

TCBACTIV 

F0 

80 

TCBDARD 

CC 

20 

TCBFBYT1 

114 


TCBADMP 

CB 

02 

TCBDARET 

B4 

33 

TCBFBYT2 

115 


TCBADUMP 

B4 

07 

TCBDARMC 

CC 

10 

TCBFBYT3 

116 


TCBAECB 

D4 


TCBDARMS 

CC 

02 

TCBFC 

21 

80 

TCBAFFN 

112 


TCBDARO 

CC 

08 

TCBFCD1 

21 

02 

TCBANDSP 

21 

10 

TCBDARP 

CC 

80 

TCBFDSOP 

IE 

04 

TCBAPG 

CA 

02 

TCBDARPN 

AD 

40 

TCBFDW 

115 

20 

TCBAQE 

9C 


TCBDARS 

CC 

40 

TCBFE 

ID 

40 

TCBAREQ 

AF 

04 

TCBDARTN 

AD 

80 

TCBFERA 

ID 

20 

TCBASYNC 

0 

80 

TCBDARWT 

CC 

04 

TCBFETXR 

IE 

02 

TCBATT 

94 

20 

TCBDDRND 

AD 

08 

TCBFIX 

0 


TCBBACK 

DC 


TCBDEB 

8 


TCBFJMC 

IE 

08 

TCBBDT 

14C 


TCBDMPO 

10 

20 

TCBFLAG 

1C 

FO 

TCBBITS 

C8 


TCBDSP 

23 


TCBFLGS 

ID 


TCBCASID 

10 

08 

TCBDSPIT 

0 

20 

TCBFLGS1 

ID 


TCBCAUF 

14 


TCBDSS 

AE 

02 

TCBFLGS2 

IE 


TCBCCPVI 

F2 


TCBDSSID 

EE 

F9 

TCBFLGS3 

IF 


TCBCDBL 

10 

08 

TCBDWSTA 

IF 

01 

TCBFLGS4 

20 


TCBCIND 

10 

02 

TCBDYDSP 

94 

02 

TCBFLGS5 

21 


TCBCLOSD 

B4 

02 

TCBDYNAM 

B4 

OA 

TCBFLGS6 

CA 


TCBCLOSE 

B4 

03 

TCBECB 

90 


TCBFLGS7 

CB 


TCBCLOSF 

B4 

04 

TCBECBNV 

115 

04 

TCBFMW 

115 

40 

TCBCMLF 

FI 

80 

TCBENQRM 

IF 

02 

TCBFOE 

F4 


TCBCMLR 

FI 

40 

TCBEOT 

114 

04 

TCBFOEA 

F5 


TCBCMP 

10 


TCBEOTFM 

114 

80 

TCBFOINP 

IE 

80 

TCBCMPC 

11 


TCBERRTN 

0 

40 

TCBFPRAP 

115 

10 

TCBCMPF 

10 


TCBERTYP 

10A 


TCBFRS 

-20 


TCBCMSG 

10 

01 

TCBESTAE 

108 


TCBFRSO 

-20 


TCBCNCB 

115 

80 

TCBESTRM 

109 


TCBFRS2 

-18 


TCBCOMM 

EE 

FD 

TCBETERM 

109 

80 

TCBFRS4 

-10 



TCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


TCB 

Data Area Descriptions 229 


Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


NAME 

HEX HEX 

OFFSET VALUE 

NAME 

HEX 

OFFSET 

HEX 

VALUE 

HEX HEX 

NAME OFFSET VALUE 

TCBFRS6 

-8 


TCBJLB 

28 


TCBNOCHK 

14 

40 

TCBFS 

ID 

02 

TCBJPQ 

2C 


TCBNONPR 

ID 

10 

TCBFSA 

70 


TCBJPQB 

2D 


TCBNOSTA 

B4 

30 

TCBFSAB 

71 


TCBJPQF 

2C 

80 

TCBNSSP 

E4 


TCBFSM 

IF 

80 

TCBJSCB 

B4 


TCBNSSQA 

E4 

80 

TCBFSMC 

IE 

10 

TCBJSCBB 

B5 


TCBNSTAE 

AO 


TCBFSTI 

IE 

40 

TCBJSTCA 

7D 


TCBNTC 

80 


TCBFT 

ID 

04 

TCBJSTCB 

7C 


TCBNTJS 

CA 

01 

TCBFTS 

IE 

01 

TCBLEN 

20 

0198 

TCBOLTEP 

14 

02 

TCBFX 

ID 

01 

TCBLEVEL 

14B 


TCBONDSP 

20 

01 

TCBGPECB 

CB 

80 

TCBLJSND 

AF 

80 

TCBOPEN 

B4 

01 

TCBGREC 

B4 

05 

TCBLLH 

114 

01 

TCBOTC 

84 


TCBGRES 

134 


TCBLLREQ 

FO 

20 

TCBOWAIT 

AE 

04 

TCBGRPH 

14 

20 

TCBLLS 

24 


TCBPAGE 

21 

20 

TCBGRS 

30 


TCBLMP 

22 


TCBPAGID 

EE 

FF 

TCBGRSO 

30 


TCBLOGID 

EE 

F8 

TCBPDUMP 

ID 

08 

TCBGRS1 

34 


TCBLTC 

88 


TCBPERCP 

18 


TCBGRS10 

58 


TCBMASTR 

EE 

FB 

TCBPERCT 

1C 


TCBGRS11 

5C 


TCBMCCNS 

B4 

40 

TCBPGNLY 

114 

10 

TCBGRS12 

60 


TCBMDIDS 

BO 


TCBPIE 

4 


TCBGRS13 

64 


TCBMESG 

B4 

09 

TCBPIEA 

5 


TCBGRS14 

68 


TCBMIGR 

CA 

04 

TCBPIEND 

AD 

02 

TCBGRS15 

6C 


TCBMNLEN 

158 

0158 

TCBPIE17 

CA 

40 

TCBGRS2 

38 


TCBMODE 

10B 


TCBPKF 

1C 


TCBGRS3 

3C 


TCBM0D91 

14 

80 

TCBPM 

4 

OF 

TCBGRS4 

40 


TCBMSS 

18 


TCBPMASK 

4 


TCBGRS5 

44 


TCBMSSB 

19 


TCBPNDSP 

21 

01 

TCBGRS6 

48 


TCBNDAXP 

150 


TCBPPSUP 

AO 

10 

TCBGRS7 

4C 


TCBNDINT 

AF 

01 

TCBPQE 

98 


TCBGRS8 

50 


TCBNDIOS 

114 

20 

TCBPTAXE 

B4 

08 

TCBGRS9 

54 


TCBNDSP 

AC 


TCBPURGE 

2C 


TCBGTF 

0 


TCBNDSPO 

AC 


TCBPXLEN 

-8 

20 

TCBGTFA 

1 


TCBNDSP1 

AD 


TCBQTIP 

B4 

OC 

TCBGTOFM 

CB 

01 

TCBNDSP2 

AE 


TCBQUIES 

AO 

40 

TCBHALT 

AO 

08 

TCBNDSP3 

AF 


TCBRBP 

0 


TCBHNDSP 

20 

10 

TCBNDSP4 

C8 


TCBRBWF 

20 

04 

TCBINDRC 

B4 

OE 

TCBNDSP5 

C9 


TCBRCMP 

5 


TCBIOBRC 

BC 


TCBNDSVC 

AE 

20 

TCBRCVRY 

18 

80 

TCBIORMS 

EE 

FC 

TCBNDTS 

AE 

10 

TCBREC 

B4 

80 

TCBIQE 

8C 


TCBNDUMP 

20 

80 

TCBRECDE 

B4 


TCBIWAIT 

AE 

08 

TCBNEWRB 

B4 

35 

TCBRPT 

118 


TCBJES 

EE 

FA 

TCBNOCC 

10 

10 

TCBRQENA 

20 

20 

TCB 








TCB 

230 MVS/370 Debug 

Hdbk Vol 

5 LC28-1389- 

-0 (c) 

Copyright IBM Corp 

. 1980/ 

1985 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


HEX HEX HEX HEX HEX HEX 


NAME 

OFFSET 

VALUE 

NAME 

OFFSET VALUE 

NAME 

OFFSET VALUE 

TCBRSPND 

AD 

10 

TCBSTAB 

AO 


TCBTIOTG 

94 

10 

TCBRSTND 

AD 

20 

TCBSTABB 

A1 


TCBTME 

78 


TCBRSTSK 

CB 

04 

TCBSTABE 

AO 

80 

TCBTPSP 

AD 

04 

TCBRTMCT 

C 


TCBSTACK 

CB 

10 

TCBTQE 

10 


TCBRTM1C 

115 

01 

TCBSTAFX 

109 

40 

TCBTQET 

78 

80 

TCBRTM1E 

114 

40 

TCBSTAHA 

FC 


TCBTRN 

14 


TCBRTM12 

104 


TCBSTCC 

10 

10 

TCBTRNB 

15 


TCBRTM2 

114 

08 

TCBSTCUR 

AO 

01 

TCBTSDP 

97 


TCBRTWA 

E0 


TCBSTMCT 

CF 


TCBTSFLG 

94 


TCBRT1S 

IF 

40 

TCBSTP 

21 

04 

TCBTSLP 

96 


TCBRV 

CA 

80 

TCBSTPCT 

95 


TCBTSTSK 

94 

80 

TCBROCD 

CD 


TCBSTPP 

AE 

40 

TCBTYP1R 

B4 

34 

TCBR0C4 

C4 


TCBSTPPR 

94 

40 

TCBTYP1W 

B4 

10 

TCBROED 

ED 


TCBSTRET 

B4 

31 

TCBUKYSP 

IOC 


TCBROEF 

EF 


TCBSVCA2 

124 


TCBUSER 

A8 


TCBR0F4 

F4 


TCBSVCS 

CB 

08 

TCBUXNDF 

21 

40 

TCBR004X 

4 


TCBSVCSP 

CB 

20 

TCBUXNDV 

20 

08 

TCBR018 

18 


TCBSWA 

F8 


TCBVAT 

11C 


TCBR07C 

7C 


TCBSWASA 

120 


TCBVERS 

14B 

01 

TCBR117 

117 


TCBSYERR 

EE 

FE 

TCBVS01A 

14B 

01 

TCBR128 

128 


TCBSYNCH 

AO 

04 

TCBVS01B 

14B 

01 

TCBR138 

138 


TCBSYS 

21 

08 

TCBVTAM1 

B4 

21 

TCBSATTN 

114 

02 

TCBSYSCT 

CE 


TCBVTAM2 

B4 

22 

TCBSAVCD 

B4 

OF 

TCBS3A 

FO 

40 

TCBVTAM3 

B4 

23 

TCBSCBKY 

108 


TCBS3MR 

AF 

08 

TCBVTAM4 

B4 

24 

TCBSCNDY 

AC 


TCBTCAMP 

B4 

OD 

TCBWTPSE 

B4 

20 

TCBSENV 

154 


TCBTCB 

74 


TCBXLAS 

E8 


TCBSEQNO 

110 


TCBTCBID 

100 


TCBXSB 

D8 


TCBSER 

20 

40 

TCBTCP 

14 

04 

TCBXSCT 

FO 


TCBSLPER 

AF 

10 

TCBTCPP 

14 

08 

TCBXSCT1 

FO 


TCBSMFGF 

A4 

80 

TCBTCT 

A4 


TCBXSCT2 

FI 


TCBSPVLK 

CA 

10 

TCBTCTB 

A5 


TCBXTNT2 

0 


TCBSRBND 

AF 

20 

TCBTCTGF 

A4 


TCBX2LEN 

20 

20 

TCBSSAT 

B8 


TCBTFLG 

0 


TCBZERO 

1C 

OF 

TCBSSPC 

115 

02 

TCBTID 

EE 


TCB33E 

AO 

20 

TCBSSSYN 

115 

08 

TCBTIO 

C 


TNONDISP 

AD 

80 


TCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


TCB 

Data Area Descriptions 231 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


TCCW 


Common Name : IOS Translation Control Block 
Macro ID : IECDTCCW 
DSECT Name : TCCN 

Created by : Caller of the CCN translation module/ IECVTCCW 
Subpool and Key : For EXCP 245 and key 0 
Size : 160 bytes 

Pointed to by : RQETCCW field of the RQE data area 
Serialization : LOCAL lock 

Function : Used by callers of the CCW translation module to request its 
services/ the principal one being the translation of a virtual channel 


program 

into a real one. 

The 

TCCN points to 

the BEB that the CCN 

translation module is to 

use 

in building the 

real channel program. 

OFFSETS 

_TYPE_LENGTH 

NAME 

DESCRIPTION 


0 

(0) STRUCTURE 

D 

TCCN 


0 

(0) ADDRESS 

4 

TCCWTCB 

ADDRESS OF TCB FOR THIS REQUEST 

4 

(4) HEX 

1 

TCCNOPTN 

OPTION BYTE DESCRIBING WORK TO BE DONE 





BY CCN TRANSLATOR 




TCCWXLAT 

"0" TRANSLATE CCWS 


.... • 1 • . 


TCCWCSNX 

"4" TRANSLATE CSN OR PASSES ADDRESS 


• * « • 1 • • • 


TCCWUNFX 

"8" UNFIX DATA AREA SET UP FREE LST 


* • • • 11 • • 


TCCHGTMN 

"12" TCCW 160B BLK REQUEST TO CALLER AND 





RETURN 


...1 


TCCWSATR 

"16" SINGLE ADDRESS TRANSLATION TCCW 





ERROR RETURN CODES- 


1. 


TCCWPGER 

"X'80 ,n PAGE FIX ERROR 


1..1 _ 


TCCWTRER 

"X'90*" TRANSLATION ERROR 


1.1. 


TCCWIDAE 

"X’A0‘" IDA BIT ERROR IN VIRT CP 


1.11 _ 


TCCNERRB 

"X*B0*" RESERVED 


11. 


TCCWERRC 

"X'CO'" RESERVED 


11.1 _ 


TCCWVMER 

"X'DO'" VALMAP ERROR 


111. 


TCCWVLER 

"X'E0‘" VAL CK ERROR IN VIRT CP 


1111 .... 


TCCWERRF 

"X’FO*" RESERVED 

5 

(5) ADDRESS 

3 

TCCWUCB 

ADDRESS OF ASSOCIATED UCB 

TCCW 




TCCW 

232 MVS/370 Debug Hdbk 

Vol 

5 LC28-1389-0 (c) Copyright IBM Corp. 1980/ 1985 











Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


8 

(8) ADDRESS 

4 

TCCWBEB 

ADDRESS OF FIRST BEB 

12 

(C) ADDRESS 

4 

TCCWFIX 

ADDRESS OF FIRST FIX LIST 

16 

(10) ADDRESS 

4 

TCCWFVC 

ADDRESS OF FIRST VIRTUAL CCW 

20 

(14) ADDRESS 

4 

TCCWFRC 

ADDRESS OF FIRST REAL CCW 

24 

(18) ADDRESS 

4 

TCCWPLKR 

ADDRESS OF NEXT FIX LIST ENTRY 

28 

(1C) ADDRESS 

4 

TCCWINDA 

ADDRESS OF FIRST IDAL 

32 

(20) ADDRESS 

4 

TCCWTICL 

ADDRESS OF UNRESOLVED TIC LIST 

36 

(24) ADDRESS 

4 

TCCWINDR 

ADDRESS OF NEXT IDAL POINTER 

40 

(28) ADDRESS 

4 

TCCWCCWR 

ADDRESS OF NEXT VIRTUAL CCW 

44 

(20 HEX 

1 

TCCWMODB 

TRANSLATOR FLAG BYTE 


1 . .. • ■ •• 


TCCWFCHN 

n X'80FREE CHAIN CONSTRUCTED 


.1. 


TCCWVLCK 

"X'40‘" VIRTUAL CP VALIDITY CHECK 


. .1. 


TCCWRSV3 

"X'20'" RESERVED 


...1 _ 


TCCWRSV4 

"X'10'" RESERVED 


_ 1 ... 


TCCWRSV5 

"X'08’" RESERVED 


. 1 . . 


TCCWPC10 

"X'04'" AN INVALID IDAL ENTRY REQD 


. 1 . 


TCCWPGCK 

"X 1 02'" PAGE FIX/UNFIXING ACTIVE. 


. 1 


TCCWECBU 

"X'Ol*" ECB IN USE. 

45 

(2D) HEX 

1 

TCCWCCWL 

NUMBER OF CCWS LEFT IN BEB 

46 

(2E) HEX 

1 

TCCWINDL 

NUMBER OF IDAS LEFT IN IDAL 

47 

(2F) HEX 

1 

TCCWEFOP 

NUMERIC PORTION OF CURRENT COMMAND 

48 

(30) ADDRESS 

4 

TCCWCCWA 

NEXT VIRTUAL CCW 

52 

(34) ADDRESS 

4 

TCCWTICA 

TIC-ED TO ADDRESS 

56 

(38) ADDRESS 

4 

TCCWLOCA 

LOW COMPARE ADDRESS 

60 

(30 ADDRESS 

4 

TCCWHICA 

HIGH COMPARE ADDRESS 

64 

(40) ADDRESS 

4 

TCCWCBEB 

CURRENT BEB POINTER 


TCCW 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


TCCW 

Data Area Descriptions 233 





















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LEN6TH NAME _ DESCRIPTION 


68 

(44) HEX 

1 

TCCWOPBT 

PREVIOUS OP BYTE 


68 

(44) ADDRESS 

4 

TCCWOPTR 

PREVIOUS COM ADDRESS 


72 

(48) HEX 

32 

TCCWSAVE 

160 BYTE BLK REG SAVE AREA 


72 

(48) ADDRESS 

4 

TCCWSAVD 

SAVE AREA FOR REG 13 


76 

(40 ADDRESS 

4 

TCCWSAV4 

SAVE AREA FOR REG 4 


80 

(50) ADDRESS 

4 

TCCHSAV5 

SAVE AREA FOR REG 5 


84 

(54) ADDRESS 

4 

TCCWSAV6 

SAVE AREA FOR REG 6 


88 

(58) ADDRESS 

4 

TCCWSAV7 

SAVE AREA FOR REG 7 


92 

(50 ADDRESS 

4 

TCCHSAV8 

SAVE AREA FOR REG 8 


96 

(60) ADDRESS 

4 

TCCWSAV9 

SAVE AREA FOR REG 9 


100 

(64) ADDRESS 

4 

TCCWSAVA 

SAVE AREA FOR REG A 


104 

(68) HEX 

56 

TCCWRGSV 

TRANSLATOR REG SAVE AREA 


104 

(68) ADDRESS 

4 

TCCWREG1 

SAVE AREA FOR REG 1 


108 

(60 ADDRESS 

4 

TCCWREG2 

SAVE AREA FOR REG 2 


112 

(70) ADDRESS 

4 

TCCWREG3 

SAVE AREA FOR REG 3 


116 

(74) ADDRESS 

4 

TCCWREG4 

SAVE AREA FOR REG 4 


120 

(78) ADDRESS 

4 

TCCWREG5 

SAVE AREA FOR REG 5 


124 

(70 ADDRESS 

4 

TCCWREG6 

SAVE AREA FOR REG 6 


128 

(80) ADDRESS 

4 

TCCWREG7 

SAVE AREA FOR REG 7 


132 

(84) ADDRESS 

4 

TCCMREG8 

SAVE AREA FOR REG 8 


TCCW 





TCCW 

234 

MVS/370 Debug Hdbk 

Vol 

5 

LC28-1389-0 (c) Copyright IBM Corp. 

1980, 1985 





















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 

136 (88) ADDRESS A TCCWREG9 SAVE AREA FOR REG 9 

140 (80 ADDRESS 4 TCCWREGA SAVE AREA FOR REG 10 

144 (90) ADDRESS 4 TCCWREGB SAVE AREA FOR REG 11 

148 (94) ADDRESS 4 TCCWREGC SAVE AREA FOR REG 12 

152 (98) ADDRESS 4 TCCWREGD SAVE AREA FOR REG 13 

156 (90 ADDRESS 4 TCCWREGE SAVE AREA FOR REG 14 

1.1. TCCWBL "X-TCCW" BLOCK LENGTH OF TCCW 


TCCW 

LC28-L389-0 (c) Copyright IBM Corp. 1980, 1985 


TCCW 

Data Area Descriptions 235 







Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


TCT 


Common Name t SMF Timing Control Table 

Macro ID : IEFTCT 

DSECT Name : SMFTCT 

Created by : IEFSMFIE 

Subpool and Key : 255 and key 1 

Size : Variable 

Pointed to by : TCBTCT field of the TCB data area. 

Serialization : Compare and Swap on some fields. 

Function : Contains job-related and step-related information and storage tables* 
and TCT I/O lookup and counter tables. 

OFFS ET S_H£i_ LENGTH NAME _ DESCRIPTION 


0 

(0) STRUCTURE 

n 

SMFTCT 

* START OF TCT 

0 

(0) CHARACTER 

3 

TCTQA 

QUEUE ADDRESS OF TCT 

3 

(3) BITSTRING 

1 

TCTEXP 

JOB/STEP TIME INDICATOR MASK 

3 

(3) BITSTRING 

1 

TCTSW 

TCT SWITCHES 


1. 


TCTJSTI 

"BITO"- TQE JOB/STEP TIME INDICATOR. IF 
0* TQE CONTAINS STEP TIME. IF 1, TQE 
CONTAINS JOB TIME. 


• It! •••• 


TCTIEX 

"BITl n - ERROR IN TCT I/O TABLE I/O 

COUNTS C0S/VS2) 


• • 1 • •••• 


TCTISK30 

"BIT2,*C*X ,B - TYPE 30 INTERVAL RECORD 
SKIPPED 


• ••1 •••• 


TCTISK32 

"BIT3*,C*X ,W - TYPE 32 INTERVAL RECORD 
SKIPPED 


• • • • 1 • • • 


TCTIABD 

"BIT4,,C*X'"- PREVIOUS INTERVAL ABENDED 


• ••• • 1 » • 


TCTRSV05 

"BIT5,*C*X' n - RESERVED 


• It! • • 1 • 


TCTRSV06 

"BIT6,*C , X'"- RESERVED 


• ••« • • • 1 


TCTRSV07 

"BIT7,*C , X ,H - RESERVED 

4 

(4) ADDRESS 

4 

TCTTCB 

ADDRESS OF THE INITIATOR TCB 

8 

(8) ADDRESS 

4 

TCTCRTBL 

ADDRESS OF THE TCT STORAGE TABLE 


TCT 

236 


MVS/370 Debug Hdbk Vol 5 


TCT 

LC28-1389-0 (c) Copyright IBM Corp. 1980* 1985 









Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


12 

CC) 

ADDRESS 

4 

TCTIOTBL 

ADDRESS OF THE TCT I/O TABLE. TCT I/O 
TABLE IS NOT NECESSARILY CONTIGUOUS WITH 
THE TCT. 

16 

(10) 

SIGNED 

4 

TCTPOOL 

SUBPOOL/LENGTH FOR TCT PROPER 

16 

(10) 

SIGNED 

2 


SUBPOOL IN WHICH THE TCT RESIDES 

18 

(12) 

SIGNED 

2 

TCTSZE 

SIZE IN BYTES OF THE TCT AND THE TCT 
STORAGE TABLE 

20 

(14) 

ADDRESS 

4 

TCTUTL 

ADDRESS OF USER TIME LIMIT ROUTINE 

24 

(18) 

ADDRESS 

4 

TCTUDATA 

ADDRESS OF A ONE-WORD PARAMETER LIST 
WHICH POINTS TO THE JOB MANAGEMENT 

RECORD (JMR) 

28 

(1C) 

ADDRESS 

4 

TCTJMR 

ADDRESS OF THE JOB MANAGEMENT RECORD 

32 

(20) 

SIGNED 

4 

TCTCPUS 

ACCUM SESSION CPU SERVICE(0S/VS2) 

G50FPRL 

32 

(20) 

HEX 

4 

TCTRSV08 

TCTUSO FIELD RESERVED IN OS/VS 

36 

(24) 

SIGNED 

4 

TCTJSTX 

AMOUNT OF TIME THAT JOB OR STEP HAS BEEN 
EXTENDED BY USER EXIT IEFUTL (32-BIT 
UNSIGNED BINARY NUMBER) (0S/VS2) 

36 

(24) 

SIGNED 

4 

TCTSTOF 

OVERFLOW FIELD FOR USER-SUPPLIED STEP 
TIME EXTENSIONS (0S/VS1) 

40 

(28) 

SIGNED 

4 

TCTTJLM 

CONTAINS REMAINING JOB TIME (32-BIT 
UNSIGNED BINARY NUMBER) (0S/VS2) 

40 

(28) 

SIGNED 

4 

TCTSACT 

A RUNNING TOTAL OF THE USER-SUPPLIED 

STEP TIME EXTENSIONS EXPRESSED IN TIMER 
UNITS (0S/VS1) 

44 

(20 

SIGNED 

4 

TCTIOCS 

ACCUM SESSION I/O SERVICE(0S/VS2) 

G50FPRL 


TCT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


TCT 

Data Area Descriptions 237 











Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH 

NAME 

DESCRIPTION 

44 

(20 SIGNED 

4 

TCTWLMT 

THE JOB OR STEP MAXIMUM WAIT TIME LIMIT 
AS SPECIFIED IN SMFDEFLT, EXPRESSED IN 
TIMER UNITS (0S/VS1) RESERVED SET TO 

ZERO (0S/VS2) 

48 

(30) SIGNED 

4 

TCTLIN 

TSO COUNT OF LINES OF TERMINAL INPUT 

52 

(34) SIGNED 

4 

TCTLOUT 

TSO COUNT OF LINES OF TERMINAL OUTPUT 

56 

(38) SIGNED 

4 

TCTAST 

THE TIME OF DAY (TO ONE HUNDREDTH OF A 
SECOND) THAT DEVICE ALLOCATION STARTED 

60 

(30 SIGNED 

4 

TCTPPST 

THE TIME OF DAY (TO ONE HUNDREDTH OF A 
SECOND THAT THE PROBLEM PROGRAM WAS INI¬ 
TIALLY LOADED INTO MAIN STORAGE 

64 

(40) CHARACTER 

20 

TCTPGSMF 

SMF REGION-RELATED STATISTICS (0S/VS1) 

64 

(40) SIGNED 

4 

TCTAJS 

ACCUMULATED SESSION SERVICE TIME 
(0S/VS2) 

64 

(40) SIGNED 

4 

TCTPGIN 

TOTAL PAGE-INS FOR THIS REGION (INCLUD¬ 
ING SWAP-INS) (0S/VS1) 

68 

(44) SIGNED 

4 

TCTACT 

ACCUMULATED ACTIVE TIME (0S/VS2) 

68 

(44) SIGNED 

4 

TCTPGOUT 

TOTAL PAGE-OUTS FOR THIS REGION (INCLUD¬ 
ING SWAP-OUTS) (0S/VS1) 

72 

(48) SIGNED 

4 

TCTATR 

ACCUMULATED TRANSACTION RESIDENCY TIME 
(0S/VS2) 

72 

(48) SIGNED 

4 

TCTRGNS 

TOTAL SWAPS PERFORMED FOR THIS TSO USER 
(SWAP-INS + SWAP-OUTS) (0S/VS1) 

76 

(40 SIGNED 

4 

TCTMSOS 

ACCUM SESSION MAIN STORAGE SERVICE 
(0S/VS2) 

76 

(40 SIGNED 

4 

TCTSIN 

TOTAL PAGES SWAPPED-IN FOR THIS TSO USER 
(0S/VS1) 

TCT 

238 

MVS/370 Debug Hdbk 

Vol 

5 

TCT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 









Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 

OFFSETS-TYPE L ENGTH NAME _ DESCRIPTION 


80 

(50) SIGNED 

4 

TCTSRBS 

ACCOM SESSION SRB SERVICE (0S/VS2) 


80 

(50) SIGNED 

4 

TCTSOUT 

TOTAL PAGES SWAPPED-OUT FOR THIS TSO 
USER (0S/VS1) 


84 

(54) SIGNED 

4 

TCTPDASD 

NO OF MOUNTS FOR NONSPECIFIC DASD 


88 

(58) SIGNED 

4 

TCTRDASD 

NO OF MOUNTS FOR SPECIFIC DASD 


92 

(50 SIGNED 

4 

TCTPTAPE 

NO OF MOUNTS FOR NONSPECIFIC TAPE 


96 

(60) SIGNED 

4 

TCTRTAPE 

NO OF MOUNTS FOR SPECIFIC TAPE 


100 

(64) SIGNED 

4 

TCTPMSS 

NO OF MOUNTS FOR NONSPECIFIC MSS 


104 

(68) SIGNED 

4 

TCTRMSS 

NO OF MOUNTS FOR SPECIFIC MSS 


108 

(60 SIGNED 

4 

TCTEJST 

LAST VALUE OF ELASPED TCB TIME 


112 

(70) SIGNED 

4 

TCTSRBT 

LAST VALUE OF ELAPSED SRB TIME 


116 

(74) SIGNED 

4 

TCTSVTEP 

LAST VALUE OF TOTAL BLOCK COUNT 


120 

(78) SIGNED 

4 

TCTLINSV 

LAST VALUE OF TPUT COUNT 


124 

(70 SIGNED 

4 

TCTLOUTS 

LAST VALUE OF TGET COUNT 


128 

(80) SIGNED 

4 

TCTTRAN 

LAST VALUE OF FOREGROUND TRANS 


132 

(84) SIGNED 

4 

TCTITCB 

INITIATOR TCB TIME 


136 

(88) SIGNED 

4 

TCTISRB 

INITIATOR SRB TIME 


140 

(80 SIGNED 

4 

TCTT30J 

ADDRESS OF JOB TOTAL TYPE 30 RCD 


144 

(90) SIGNED 

4 

TCTT30S 

ADDRESS OF STEP TOTAL TYPE 30 RCD 


148 

(94) SIGNED 

4 

TCTT30H 

ADDRESS OF EXCP HOLD TYPE 30 RCD 


152 

(98) SIGNED 

4 

TCTLCTAD 

ADDRESS OF LCT 



TCT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


TCT 

Data Area Descriptions 2^9 













Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


156 

(90 SIGNED 

4 

TCTT32J 

ADDRESS OF JOB TOTAL TYPE 32 RCD 

160 

(A0) SIGNED 

4 

TCTT32S 

ADDRESS OF STEP TOTAL TYPE 32 RCD 

164 

(A4) SIGNED 

4 

TCT32SP 

SUBPOOL AND SIZE OF TYPE 32 RCDS 

168 

(A8) SIGNED 

4 

TCT32BLK 

ADDRESS OF DETAIL CONTROL BLOCK 

172 

(AC) SIGNED 

4 


RESERVED 

176 

(BO) SIGNED 

4 


RESERVED 

180 

(B4) SIGNED 

4 


RESERVED 

184 

(B8) SIGNED 

4 

TCTTIMER 

ADDRESS OF SMF TIMER ELEMENT 

188 

(BC) SIGNED 

4 

TCTTMRSP 

SUBPOOL AND SIZE OF TIMER ELT 

192 

(CO) SIGNED 

4 

TCTPARMS 

ADDRESS OF TIMER PARAMETER LIST 

196 

(C4) SIGNED 

4 

TCTPRMSP 

SUBPOOL AND SIZE OF PARM LIST 

200 

(C8) CHARACTER 

8 

TCTSNAME 

STEP NAME OF CURRENT STEP 

208 

(DO) SIGNED 

4 

TCTJTCPT 

STEP TCB CP TIME 

212 

(D4) SIGNED 

4 

TCTJTAXT 

STEP TCB UNNORMALIZED AXP TIME 

216 

(D8) SIGNED 

4 

TCTJSCPT 

STEP SRB CP TIME 

220 

(DC) SIGNED 

4 

TCTJSAXT 

STEP SRB UNNORMALIZED AXP TIME 

224 

(EO) SIGNED 

4 

TCTITCPT 

INIT TCB CP TIME 

228 

(E4) SIGNED 

4 

TCTITAXT 

INIT TCB UNNORMALIZED AXP TIME 

232 

(E8) SIGNED 

4 

TCTISCPT 

INIT SRB CP TIME 

236 

(EC) SIGNED 

1111 .... 

4 

TCTISAXT 

TCTCOMZ 

INIT SRB UNNORMALIZED AXP TIME 
"X-SMFTCT"- LENGTH OF TCT COMMON SECTION 


TCT 

240 


MVS/370 Debug Hdbk Vol 5 


TCT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 











Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSET S_TYPE_LENGTH NAME_DESCRIPTION 


TCT STORAGE TABLE 

A SEPARATE TABLE IS USED TO DESCRIBE THE STORAGE 
OBTAINED FOR A TASK. 


1111 _ TCTCORE TCTCRTBL START OF TCT STORAGE TABLE 

240 (FO) ADDRESS 4 TCTLWM THE CURRENT HIGHEST ADDRESS ALLOCATED 

FROM THE BOTTOM OF THE REGION 

244 (F4) ADDRESS 4 TCTHWM THE CURRENT LOHEST ADDRESS ALLOCATED 

FROM THE TOP OF THE REGION 

248 (F8) SIGNED 2 TCTMINC THE MINIMUM DIFFERENCE (IN 2K BLOCKS) 

BETWEEN TCTLWM AND TCTHWM. THIS FIGURE 
REPRESENTS THE UNUSED PORTION OF THE 
USER'S REGION. 

250 (FA) SIGNED 2 TCTRSZ THE ORIGINAL REGION REQUEST EXPRESSED IN 

2K BLOCKS 

252 (FC) ADDRESS 4 TCTRBA FOR A V=V PROBLEM PROGRAM, LOWEST 

ADDRESS IN PRIVATE AREA. FOR A V-R PROB¬ 
LEM PROGRAM, LOWEST ADDRESS IN REGION. 
(0S/VS2) 

256 (100) SIGNED 4 TCTRSV0K4) RESERVED 

..1. TCTCREZ "X-TCTCORE"- LENGTH OF TCT STORAGE TABLE 

TCTBIG "K-SMFTCT"- COMBINED LENGTH OF TCT COM¬ 

MON SECTION AND TCT STORAGE TABLE 


TCT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


TCT 

Data Area Descriptions 241 







Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SEESEIS _IYRE_ LENGTH NAME _ DESCRIPTION 


TCT INPUT/OUTPUT TABLE 

THE TCT I/O TABLE IS COMPOSED OF THE TCT I/O LOOKUP TABLE 
AND THE TCT I/O COUNTER TABLE. THE TCT I/O TABLE IS NOT 
NECESSARILY CONTIGUOUS TO THE TCT. THE TCTIOTBL FIELD OF 
THE TCT POINTS TO IT. 

TCT I/O LOOKUP TABLE 

THE TCT I/O LOOKUP TABLE CONTAINS A COMMON SECTION AND A 
DD LOOKUP TABLE ENTRY FOR EACH DD ENTRY IN THE TIOT. 


1 

TCTTIOT 

BEGINNING 

OF 

TCT 

I/O 

_1 

TABLE 

272 (110) SIGNED 

4 TCTPLEXT 

SUBPOOL/LENGTH 

OF 

TCT 

I/O 

TABLE 


272 (110) SIGNED 2 SUBPOOL IN WHICH THE TCT I/O TABLE 

RESIDES 

274 (112) SIGNED 2 TCTSZEXT SIZE IN BYTES OF TCT I/O TABLE 


276 

(114) 

SIGNED 

2 

TCTSZLKP 

NUMBER OF DEVICE ENTRIES IN THE TCT 
TCTDDLEN TABLE TIMES 16 

278 

(116) 

HEX 
• 1 * * * 

2 

TCTRSV11 

TCTCOMIO 

RESERVED 

"X-TCTTIOT"- LENGTH OF TCT I/O TABLE 
COMMON SECTION 


DD LOOKUP TABLE ENTRY 

A DD LOOKUP TABLE ENTRY IS CREATED FOR EACH DD ENTRY IN 
THE TIOT. THE DD LOOKUP TABLE ENTRIES ARE REFERENCED BY 
THE SYSTEM MANAGEMENT FACILITIES OPTION CODE TO ENTER THE 
TCT I/O COUNTER TABLE AT THE DD ENTRY CONTAINING THE DEVICE 
ENTRY FOR THE ACCESSED DEVICE. 


TCTIODSP START OF DD LOOKUP TABLE ENTRY 


280 (118) SIGNED 2 TCTDCBTD OFFSET FROM THE TIOT ORIGIN TO THE TIO- 

ELNGH FIELD IN THE TIOT ENTRY FOR THE DD 
STATEMENT ASSOCIATED WITH THE ACCESSED 


TCT 

242 


MVS/370 Debug Hdbk Vol 5 


TCT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 






Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OF FSETS _mi_ LIM6TH . MAMS _ DESCRIPTION 

DATA SET 

282 C11A) SIGNED 2 TCTIOTSD OFFSET FROM THE TCT I/O TABLE ORIGIN TO 

THE DD ENTRY, WITHIN THE TCT I/O COUNTER 
TABLE, ASSOCIATED WITH THE ACCESSED DATA 
SET 


284 (11C) SIGNED 4 TCTDCBLE END OF TCT I/O LOOKUP TABLE (ZEROS) 


TCT I/O COUNTER TABLE 

THE TCT I/O COUNTER TABLE CONSISTS OF ONE DD ENTRY FOR 
EACH DD ENTRY IN THE TIOT 
DD ENTRY 

EACH DD ENTRY CONSISTS OF AN 16-BYTE DEVICE ENTRY REPEATED 
FOR EACH UCB (DEVICE) ASSOCIATED WITH A DD STATEMENT. 

AN 8-BYTE OUTPUT LIMIT EXTENSION IS UNUSED. 

DEVICE ENTRY 


TCTDDENT START OF TCT I/O COUNTER TABLE (DE¬ 

VICE ENTRY) 


288 

(120) 

SIGNED 

2 

TCTUCBP 

290 

(122) 

SIGNED 

1 

TCTSCTR 


(123) BITSTRING 

1 TCTFLGS 

1 * • t • • • • 

TCTDDIND 

•It* •••• 

TCTVAMDS 

• » 1 • » • « » 

TCTNOCNT 

• ••1 

TCTRSV22 

• ••• 1 • • • 

TCTRSV23 

• ••• * 1 • • 

TCTRSV24 


ADDRESS OF THE UCB ASSOCIATED WITH THIS 
DEVICE 

NUMBER OF DEVICES ASSOCIATED WITH THIS 
DD STATEMENT. THIS NUMBER REPRESENTS THE 
NUMBER OF DEVICE ENTRIES WITHIN THIS DD 
ENTRY. THIS FIELD CONTAINS ZEROS IN ALL 
BUT ITS FIRST APPEARANCE IN ANY DD 
ENTRY. X'FF' INDICATES SYSIN DATA SET 
(OS/VS1). 

FLAG BYTE 

"X»80 ,w - END OF CONCATENATED DD STRING 
(OS/VS1) 

n .X'40'"— VIO DATA SET ENTRY. TCTUCBP 
FIELD IS ZERO WHEN THIS BIT IS ONE. 
"X'20'"- IF ON, DO NOT COUNT THE EXCP 
(0S/VS1) 

"X'lO'^C'X*"- RESERVED 
"X'OS'^C'X"*- RESERVED 
"X'04',,C'X'"- RESERVED 


TCT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


TCT 

Data Area Descriptions 243 







Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 



fit# 

• • • • 

. .1. 

. . .1 


TCTRSV25 

TCTRSV26 

"X'OZS.C'X'"- RESERVED 
"X'Ol'^C'X'"- RESERVED 

292 

(124) 

SIGNED 

4 

TCTDCTR 

COUNTER FOR EXCP'S ISSUED AGAINST THIS 
UCB (DEVICE) 

296 

298 

(128) 
1 . .. 
(12A) 

SIGNED 

• • • • 

SIGNED 

2 

2 

TCTBLKSZ 

TCTCBSZ 

TCTRSVOO 

BLOCK SIZE FOR THIS DD NAME 
"X’80 ,n CHANGED BLOCK SIZE IF ON 

RESERVED ENTRY 

300 

(120 
. . .1 

SIGNED 

4 

TCTDCTRS 

TCTDDLEN 

SAVED EXEP COUNT FOR THIS ENTRY 
"X-TCTUCBP" 

OUTPUT 

LIMIT 

EXTENSION 





304 

(130) 

HEX 

4 

TCTRSV10 

TCTOUTLM FIELD RESERVED IN OS/VS 


308 (134) SIGNED 


309 (135) SIGNED 


1 TCTEXRLD A BINARY NUMBER OF EXTENTS RELEASED BY 

THE DADSM RELEASE ROUTINE. COLLECTED 
ONLY IF RLSE WAS SPECIFIED IN THE SPACE 
PARAMETER FOR THIS DATA SET. 

3 TCTTKRLD A BINARY NUMBER OF TRACKS RELEASED BY 

THE DADSM RELEASE ROUTINE. COLLECTED 
ONLY IF RLSE WAS SPECIFIED IN THE SPACE 
PARAMETER FOR THIS DATA SET. 


TCT 

244 


MVS/370 Debug Hdbk Vol 5 


LC28-1389-0 (c) Copyright IBM Corp. 1980 


TCT 

1985 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


CROSS_REFERENCE 


HEX HEX HEX HEX HEX HEX 


MAME 

OFFSET 

VALUE 

NAME 

OFFSET 

VALUE 

NAME 

OFFSET 

VALUE 

SMFTCT 

0 


TCTJMR 

1C 


TCTRSV22 

123 

10 

TCTACT 

44 


TCTJSAXT 

DC 


TCTRSV23 

123 

08 

TCTAJS 

40 


TCTJSCPT 

D8 


TCTRSV24 

123 

04 

TCTAST 

38 


TCTJSTI 

3 

80 

TCTRSV25 

123 

02 

TCTATR 

48 


TCTJSTX 

24 


TCTRSV26 

123 

01 

TCTBIG 

100 

0110 

TCTJTAXT 

D4 


TCTRSZ 

FA 


TCTBLKSZ 

128 


TCTJTCPT 

DO 


TCTRTAPE 

60 


TCTCBSZ 

128 

80 

TCTLCTAD 

98 


TCTSACT 

28 


TCTC0MI0 

116 

08 

TCTLIN 

30 


TCTSCTR 

122 


TCTCOMZ 

EC 

FO 

TCTLINSV 

78 


TCTSIN 

4C 


TCTCORE 

EC 

FO 

TCTLOUT 

34 


TCTSNAME 

C8 


TCTCPUS 

20 


TCTLOUTS 

7C 


TCTSOUT 

50 


TCTCREZ 

100 

20 

TCTLWM 

FO 


TCTSRBS 

50 


TCTCRTBL 

8 


TCTMINC 

F8 


TCTSRBT 

70 


TCTDCBLE 

11C 


TCTMSOS 

4C 


TCTSTOF 

24 


TCTDCBTD 

118 


TCTNOCNT 

123 

20 

TCTSVTEP 

74 


TCTDCTR 

124 


TCTPARMS 

CO 


TCTSW 

3 


TCTDCTRS 

12C 


TCTPDASD 

54 


TCTSZE 

12 


TCTDDENT 

11C 

0120 

TCTPGIN 

40 


TCTSZEXT 

112 


TCTDDIND 

123 

80 

TCTPGOUT 

44 


TCTSZLKP 

114 


TCTDDLEN 

12C 

10 

TCTPGSMF 

40 


TCTTCB 

4 


TCTEJST 

6C 


TCTPLEXT 

110 


TCTTIMER 

B8 


TCTEXP 

3 


TCTPMSS 

64 


TCTTIOT 

100 

0110 

TCTEXRLD 

134 


TCTPOOL 

10 


TCTTJLM 

28 


TCTFLGS 

123 


TCTPPST 

3C 


TCTTKRLD 

135 


TCTHWM 

F4 


TCTPRMSP 

C4 


TCTTMRSP 

BC 


TCTIABD 

3 

08 

TCTPTAPE 

5C 


TCTTRAN 

80 


TCTIEX 

3 

40 

TCTQA 

0 


TCTT30H 

94 


TCTIOCS 

2C 


TCTRBA 

FC 


TCTT30J 

8C 


TCTIODSP 

116 

0118 

TCTRDASD 

58 


TCTT30S 

90 


TCTIOTBL 

C 


TCTRGNS 

48 


TCTT32J 

9C 


TCTIOTSD 

11A 


TCTRMSS 

68 


TCTT32S 

AO 


TCTISAXT 

EC 


TCTRSVOO 

12A 


TCTUCBP 

120 


TCTISCPT 

E8 


TCTRSV01 

100 


TCTUDATA 

18 


TCTISK30 

3 

20 

TCTRSV05 

3 

04 

TCTUTL 

14 


TCTISK32 

3 

10 

TCTRSV06 

3 

02 

TCTVAMDS 

123 

40 

TCTISRB 

88 


TCTRSV07 

3 

01 

TCTWLMT 

2C 


TCTITAXT 

E4 


TCTRSV08 

20 


TCT32BLK 

A8 


TCTITCB 

84 


TCTRSV10 

130 


TCT32SP 

A4 


TCTITCPT 

E0 


TCTRSV11 

116 






TCT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


TCT 

Data Area Descriptions 245 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


TDCM 


Common Name : DIDOCS Pageable DCMs 

Macro ID : IEETDCM 

DSECT Name : DCMSTRT 

Created by : IEECVET1 

Subpool and Key : 229 and key 0 

Size i Variable; depends on device type and model. 

Pointed to by : DCMADTRN field of the RDCM data area 
Serialization : LOCAL and CMS locks 

Function : Work and save areas; communications area and module addresses. 
OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) STRUCTURE 

D 

DCMSTRT 

DCMSTPTR 

0 

(0) SIGNED 

4 

DCM0ACR0 

CNTL BLK ACRONYM •TDCM* AFTER OPEN 

0 

(0) SIGNED 

2 


TDCM LENGTH BEFORE OPEN 

2 

(2) SIGNED 

2 


PADDING FOR LENGTH 

4 

(4) BITSTRING 

1 

DCMFLG1 

TDCM AREA INDICATORS 


.1. 


DCM0UTPT 

»X , 02 ,B TDCM UPDATED FOR OUTPUT ONLY 

5 

(5) HEX 

1 

DCMATI 

SAVED UCB ATTN INDEX 

6 

(6) ADDRESS 

2 


RESERVED 

8 

(8) ADDRESS 

4 

DCMWTINT 

DCMWTINT INITIAL VALUE 

12 

(C) SIGNED 

2 

DCMLNCNT 

NUMBER OF LINES TO BLANK MC 

14 

(E) HEX 

1 

DCMLNNUM 

FIRST LINE TO BLANK 

15 

CF) HEX 

1 


RESERVED 

16 

(10) SIGNED 

4 

DCMPACK 

AREA TO PLACE NUMBER FOR PACKING 

20 

(14) SIGNED 

4 

DCMCVBIN 

AREA FOR CONVERSION TO BINARY 

TIMER 

COMMUNICATION FIELD 





TDCM 

246 


MVS/370 Debug Hdbk Vol 5 


TDCM 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 













Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


24 

25 

26 

(18) BITSTRING 

1 • • • •••• 

« 1 • • t « • • 

• • • 1 •••• 

• ••• ilt* 

• ••« ttl* 

• ••• « • < 1 

(19) HEX 
(1A) SIGNED 

1 

1 

2 

DCMTIMES 

DCMTIMER 

DCMOPTTI 

DCMOTTMM 

DCMTASYN 

DCMOCTTI 

DCMRMTTI 

DCMELGN 

TIME RTNS INDICATOR BYTE 

"X'80 "* TIME ELAPSED FOR THIS DISPLAY 

"X'40OPTIONS TO TI RTN 

"X'lO"* OPTIONS OR TI RTNS TO MSG MODULE 

"X'04 ,n TIMER SET FOR ASYNC ERROR MSG 

"X'02 ,n OPEN-CLOSE TO TI RTN 

n X*01 ,w ROLL MODE TO TIMER ROUTINE 

RESERVED 

ENTRY AREA LAST CHARACTER POINTER 

ADDRESS TABLE 


28 

(1C) ADDRESS 

4 

DCMBUFAD 

POINTER TO BUFFER ADDRESS TABLE 

32 

(20) ADDRESS 

4 

DCMDOMPK 

ADDRESS OF FIRST DOM NUMBER 

36 

(24) ADDRESS 

4 

DCMAMTAB 

ADDRESS OF FIRST SCT ENTRY 

40 

(28) ADDRESS 

4 

DCMADSEC 

ADDRESS OF FIRST SSCT ENTRY 

44 

(20 ADDRESS 

4 

DCMADDRL 

ADDRESS OF LAST SCT ENTRY 

48 

(30) ADDRESS 

4 

DCMASCRN 

POINTER TO SCREEN IMAGE BUFFER 

52 

(34) ADDRESS 

4 

DCMLSCRN 

POINTER TO LAST BUFFER LINE 

56 

(38) ADDRESS 

4 

DCMWTBUF 

SCREEN LENGTH POINTER 

60 

(30 ADDRESS 

4 

DCMAINS 

POINTER TO INSTRUCTION LINE 

64 

(40) ADDRESS 

4 

DCMAENTR 

POINTER TO ENTRY AREA 

68 

(44) ADDRESS 

4 

DCMAWARN 

POINTER TO WARNING LINE 

72 

(48) ADDRESS 

4 

DCMADCHP 

ADDRESS OF CHANNEL PROGRAM AREA 


TDCM 

LC28-1389-0 (c) Copyright IBM Coro. 1980, 1985 


TDCM 

Data Area Descriptions 247 



















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


TYPE LENGTH NAME 


JDESCRIPTXO 


284 C11C) BITSTRING 

1 *«« «••• 

. 1 . . a • I I 


285 (11D) 

1 .. 
. 1 . 
. .1 


286 (HE) BITST 
•• 1 * •••• 
(*il tiii 


BITSTRING 


1 i • • i 

* 1 • • • 

• • 1 • • 

• «• 1 • 

« • • • 1 
BITSTRING 


1 DCMCS 
DCMCSC 
DCMCSO 
1 DCMUTILT 
DCMUTILA 
DCMUTILB 
DCMUTILC 
DCMUTILD 
DCMUTILE 
DCMUTILF 
DCMTEST1 
DCMTEST2 
1 DCMDSTAT 
DCMDSTNM 
DCMDSTNH 
DCMDSAUT 


OPEN/CLOSE REQUEST 

"X'80'" CLOSE REQUEST 

"X'40*" OPEN REQUEST 

INTERNAL FLAGS 

"X * 8 0'" THESE BITS ARE 

n X'40 ,n INITIALIZED AND USED 

"X'20*" SOLELY WITHIN 

"X'10'" EACH MODULE 

"X'08'" THEY ARE NEVER 

"X»04 ,n USED FOR INTERFACE 

"X'02»" FOR TESTING 

"X'01*" FOR TESTING 

CURRENT DISPLAY STATUS 

"X'20»" MESSAGES ARE NUMBERED 

"X'10»" MSGS NUMBERED HOLD OPTION 

"X'04'" AUTOMATIC DELETION TRIED 



287 C11F) BITSTRING 

1 *«* 1111 
•••• ilit 
aaaa a . . 1 


1 DCMMCSST MCS INTERFACE BYTE 

DCMDUSE "X'80*" DIDOCS IN CONTROL 

DCMOOMSS "X'04*" MESSAGE STREAM ENTRY 

DCMOOSDS "X'01*" STATUS DISPLAY ENTRY 



288 (120) BITSTRING 

1 «*« • • 11 
all* aaaa 
aala aaaa 
aaal aaaa 
aaaa laaa 
aaaa alaa 
aaaa aala 
aaaa aaal 


1 DCMIOUNQ 
DCMI0226 
DCMRPCUR 
DCMFRSCN 
DCMRDARM 
DCMW2250 
DCMINNOR 
DCMINERR 
DCMEWASP 


UNIQUE 10 BYTE 
"X'80*" RMI PERFORMED 
"X'40'" ADVANCE CURSOR TO BLANKS 
"X'20*" PUT OUTPUT IN HOLD MODE 
"X'10'" PERFORM READ AFTER RMI 
"X*08»" DEVICE HAS LIGHT PEN 
"X'04*" NORMAL INSTRUCTION LINE 
"X'02'" ERROR INSTRUCTION LINE 
"X'01'" ERASE/WRITE ALTERNATE COMMAND 
SUPPORTED 


MVS/370 Debug Hdbk Vol 5 


TDCM 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 














Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


I/O COMMUNICATION FIELDS 




289 (121) BITSTRING 

1 * * * * * •» 

• 1•» • * •» 

« . 1. «. ■ « 

.««1 • • • • 

• •. • 1 * • • 

• • • • • 1 « * 

* * * • • • 1 • 
.1 

290 (122) BITSTRING 

1 ■»* ».. . 

»1. » « ... 

••1* i*i* 


291 (123) BITSTRING 

« 1 ». .. . . 

. . 1 . .. ». 


1 .... 

. 1 ... 

. . 1.. 

. . . 1. 

. ...1 


1 DCMI0CM1 
DCMDORMI 
DCMSOUND 
DCMWRWRN 
DCMWRMSG 
DCMWRPAR 
DCMWRINS 
DCMWRENT 
DCMINSC 

1 DCMI0CM2 
DCMBLENT 
DCMBLWRL 
DCMBLWRR 
DCMINSSH 
DCMWINFD 
DCMERASE 
DCMIOCRD 
DCMWRASY 

1 DCMI0CM3 
DCMOPRMI 

DCMSSRG 

DCMEHAND 

DCMWRPFK 

DCMPFKAT 

DCMRDPFK 

DCMACPFK 

DCMLTPFK 


10 COMMUNICATIONS BYTE 1 

"X'80 ,w ISSUE RMI 

"X'40* n SOUND ALARM 

"X»20»" WRITE WARNING LINE 

n X'10‘" WRITE FULL MESSAGE AREA 

"X*08»" WRITE PARTIAL MESSAGE AREA 

"X'04'" WRITE INSTRUCTION LINE 

"X'02'" WRITE ENTRY AREA 

"X*01' n INSERT CURSOR 

10 COMMUNICATIONS BYTE 2 

"X'80 ,w BLANK ENTRY AREA 

"X'40 ,n BLANK LEFT HALF WARNING LINE 

"X'20BLANK RIGHT HALF WARNING LINE 

"X'10'" INIT AND SHIFT INSTRUCTION LINE 

"X'08WRITE INFORMATIONAL DISPLAY 

"X'04'" PERFORM ERASE 

"X»02 ,n PERFORM READ (2250,22000 

"X'Ol'" WRITE ASYNC ERROR MSG TO 

MID-SCREEN 

10 COMMUNICATIONS BYTE 3 
"X'80*" RMI AFTER OPEN TO UNLOCK KEY¬ 
BOARD 

"X'40»" SUPPRESS START REGENERATION 
"X'20'" ERASE/WRITE ALTERNATE COMMAND 
NEEDED 

"X'10«" TDCM WRITE PFK AREA 

"X»08*" PFK ATTENTION 

"X'04 ,n PFK AREA READ 

"X'02*" EXTINGUISH PFK LIGHTS 

"X'Ol'" LIGHT ALL ALLOCATED PFK LIGHTS 


292 (124) HEX 

293 (125) HEX 

294 (126) HEX 


1 DCMLINEN LINE NUMBER TO BEGIN WRITE 

1 DCMCULNO LINE IN ENTRY AREA TO INSERT CURSOR 

1 DCMPOSCU POSITION TO INSERT CURSOR 


TDCM 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


TDCM 

Data Area Descriptions 251 














Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 



ASYNCHRONOUS ERROR COMMUNICATIONS FIELD 


295 (127) BITSTRING 

alaa * * i * 

» • 1 i a • • ■ 

• *•1 a a a a 

• « • a 1 a « a 


1 DCMASYNC 
DCMASDA 
DCMASIN 

DCMASBA 

DCMASEWA 


ASYN ERROR COMMUNICATIONS/RETRY BYTE 
"X'40 f " DATA CHECK RETRY BIT 
"X^O*" INVALID BUFFER ADDR CHECK RETRY 
BIT 

"X'10'" BUFFER ADDR PARITY CHECK RETRY 
BIT 

n X'08 ,n PERMANENT ERROR ON EWA DEVICE 
RETRIED 



296 (128) BITSTRING 

laaa a a a a 
a 1 a a a a a a 


. 1 ... 
• 1 • • 
• • a 1 a 

a a a a 1 


297 (129) BITSTRING 

laaa aaaa 
alaa aaaa 
aala aaaa 
aaal aaaa 

aaaa laaa 

aaaa alaa 
aaaa aala 
aaaa aaal 

298 (12A) BITSTRING 


1 DCMCOM1 
DCMLPENT 
DCMIOPRD 
DCMCOMRM 
DCMCOMAU 
DCMCOMRD 
DCMCOMNM 
DCMCLEAR 
DCMCANCL 

1 DCMC0M2 
DCMCM2I 
DCMSPLIT 
DCMCOMAR 
DCMREPLC 

DCMERPF 

DCMCMIN5 
DCMCBLNK 
DCMAE 
1 DCMC0M3 


COMMUNICATIONS BYTE 
"X'80 ,n ENTER BY LP OR CURSOR 
"X'40»" READ PERFORMED 
"X*20**» RMI PERFORMED 
"X'10*" PERFORM AUTO DELETE 
"X»08*" PERFORM REGULAR DELETE 
"X'04*" NUMBER MESSAGES 
"X»02 ,n CLEAR KEY WAS PRESSED 
"X'01»" INDICATE CANCEL TO COMMAND ROU¬ 
TINE 

COMMUNICATIONS BYTE 

n X'80'« INPUT TO BE PROCESSED 

"X'40MSG TO BE SPLIT 

"X'20'" ACCEPTED REPLY 

"X*10»" REPEAT LAST COMMAND KEY (PA1) 

PRESSED 

"X'08 ,w ERASE PERF-PROC CAN NOW CLOSE 
DEVICE 

"X , Q4 ,n RETURN TO INTER. 5 FOR BLNK 
"X , 02 ,n BLANKING REQUIRED 
"X*01»" CLEANUP FOR ASY ERROR 
COMMUNICATIONS BYTE 


TDCM TDCM 

252 MVS/370 Debug Hdbk Vol 5 LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 

I 









Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


SE.FS. E T S _IYEI_ LENGTH NAME _ DESCRIPTION 


1 ... 


1 .. 
. 1 . 
..1 


. 1 . 


. .1 


. ..1 


. ...1 


DCMCDSP3 n X'80'" DISPLAY 3 COMPLETED WORK 

DCMRTPFK "X»40»" RETURN TO PFK ROUTINE 

DCMVLPFK "X'20' w VERIFYING LAST COMMAND 

DCMXINT1 "X'10»" ENTRY FOR INTERFACE 1 ROUTINE 

DCMOLUNV ■X , 08»" 0-0-L MSG CAUSED UNVIEW. MSG. 

DCMPFKWR "X*04»" WRITE PFK UPDATES TO LIB 

DCMOLHLD "X'02'" OUT OF LINE MESSAGES HELD MB 

DCMCMIN7 "X'01»" RETURN TO INTER. 7 FOR BLANKING 


MESSAGE MODULES COMMUNICATION FIELDS 


299 (12B) BITSTRING 

. 1 .. .... 

.. 1 . .... 

...1 .... 

_ 1 ... 

. 1 .. 

. 1 . 


DCMCMSG1 MSG MODULE COMMUNICATIONS BYTE 1 

DCMMSGWT "X^O*" MOVE IN MESSAGE WAITING 

DCMUNMSG n X , 40 ,n MOVE IN UNVIEWABLE MESSAGE 

DCMSTEX "X'20*" MOVE IN STATUS EXISTS 

DCMCHOPT n X'10' n MOVE IN CHANGE OPTIONS 

DCMELONG "X'08*" MOVE IN ENTRY TOO LONG 

DCMWRCDL * , X , 04 ,n MOVE IN CON=N,DEL=Y 

DCMDELNT "X'02 ,n MOVE IN DEL UNCHANGED, NO TIMER 


<120 

BITSTRING 

1 DCMCMSG2 

1... 

• • • • 

DCMDLREQ 

.1.. 

III* 

DCMRQINC 

. .1. 

• III 

DCMMSGCR 

.. .1 


DCMINVOP 

t t • • 

1. .. 

DCMCILLP 

• • • • 

.1. . 

DCMDELRI 

• • • • 

. .1. 

DCMASYRT 

III* 

.. .1 

DCMASYCD 


301 (12D) BITSTRING 

.1 . 

. .1 . 

...1 _ 

_ 1 ... 

. 1 . . 


DCMCMSG3 

DCMCMRLL 

DCMCDLR1 

DCMCDLR2 

DCMCDLR3 

DCMCDLR4 

DCMCDLR5 

DCMDTBSY 


MSG MODULE COMMUNICATIONS BYTE 2 
"X'80 ,n MOVE IN DELETION REQUESTED 
"X'40'" MOVE IN REQUEST INCONSISTENT 
"X^O'" MOVE IN INVALID CURSOR OPERATION 
"X f 10 ,n MOVE IN INVALID OPERAND 
"X'08 ,n MOVE IN ILLEGAL LP OPERATION 
n X'04'" MOVE IN DELETE REQUEST INCONSIS- 
TANT 

"X'02' n MOVE IN ASYN ERROR RETRYABLE 
n X'01 ,w MOVE IN ASYN ERROR MAYBE RETRYA¬ 
BLE 

MSG MODULE COMMUNICATIONS BYTE 3 
"X'80 ,n MOVE IN ROLL MODE MESSAGE 
n X'40 ,n NO DELETABLE MESSAGES 
"X'20 ,n INVALID RANGE 
"X'lO'" SEG EQU TO ZERO 
n X*08 ,n DISPLAY NOT ON SCREEN 
"X'04*" INVALID OPERAND 
"X»01 ,w COMMAND REJECTED TASK BUSY 


TDCM 

LC28-1389-0 Cc) Copyright IBM Corp. 1980, 1985 


TDCM 

Data Area Descriptions 253 
























Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


302 

(12E) BITSTRING 
1 « * • •••• 

• la* •••• 

• •1* «••• 

• ••1 •••• 

1 

DCMCMSG4 

DCMPFKNA 

DCMPFKND 

DCMPFKN0 

DCMPFKIP 

MSG MODULE COMMUNICATIONS BYTE 4 
"X'80'" MOVE IN PFK NOT ALLOCATED FOR 
"X'40'" MOVE IN PFK NOT DEFINED 
"X'20MOVE IN NO PFK ALLOCATION 
"X'lO'" MOVE IN PFK IN PROCESS 

SVC 34 

COMMUNICATIONS 

FIELD 



303 

C12F) BITSTRING 
1 • • • •••• 

. 1 . • •••• 

• •li •••• 

1 

DCMSVC34 

DCMMYCMD 

DCMINVLD 

DCMTYPE1 

SVC 34 COMMUNICATION BYTE 

"X'80 ,n COMMAND TO BE HANDLED BY THIS 

CONS 

"X'40'" INVALID K COMMAND 
"X'20 ,n K COMMAND IS NOT ROUTABLE 

304 

(130) BITSTRING 
1 • • • •••• 

1 

DCMC0M4 

DCMCNTRL 

COMMUNICATION BYTE 4 

"X'80 ,w CONTROL LINE INDICATOR 

INDEX 

FOR I/O ROUTINE 




305 

306 

(131) HEX 

(132) SIGNED 

1 

2 

DCMIONDX 

DCMTEST 

INDEX FOR SELECTING THE MB APPROPRIATE 
I/O ROUTINE MB X'04» 3066-IEECVETH X'08' 
2250-1EECVETP X'OC' 2260-IEECVETR X'lO* 
3277 TYPE DEVICE IEECVETU 

RESERVED FOR TESTING MB 

MODULE 

: ADDRESSES 





308 

(134) SIGNED 

4 

DCMI0RTN 

APPROPRIATE I/O ROUTINE MB NAME TRACE ID 
DESCRIPTION MB IEECVETH EH 3066 10 ROU¬ 
TINE IEECVETP EP 2250 10 ROUTINE MB 
IEECVETR ER 2260 10 ROUTINE MB IEECVETU 
EU 3277 TYPE DEVICE 10 ROUTINE NAME 

TRACE ID DESCRIPTION MB 


TDCM 

254 


MVS/370 Debug Hdbk Vol 5 


TDCM 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 










Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


312 

(138) 

SIGNED 

4 

DCMNPRZ 

amagaaL i 

IEECVFTl 

FI 

PROCESSOR 0 LOAD ONE MB 

316 

(130 

SIGNED 

4 

DCMNPROC 

IEECVET1 

MB 

El 

PROCESSOR ROUTINE LOAD ONE 

320 

(140) 

SIGNED 

4 

DCMNDSP1 

IEECVET2 

E2 

DISPLAY ROUTINE 1 MB 

324 

(144) 

SIGNED 

4 

DCMNDSP2 

IEECVET3 

E3 

DISPLAY ROUTINE 2 MB 

328 

(148) 

SIGNED 

4 

DCMNDSP3 

IEECVFT2 

F2 

DISPLAY ROUTINE 3 MB 

332 

(140 

SIGNED 

4 

DCMNCMD1 

IEECVET4 

E4 

COMMAND ROUTINE 1 MB 

336 

(150) 

SIGNED 

4 

DCMNDEL1 

IEECVET6 

E6 

DELETE ROUTINE 1 MB 

340 

(154) 

SIGNED 

4 

DCMNDEL2 

IEECVET7 

E7 

DELETE ROUTINE 2 MB 

344 

(158) 

SIGNED 

4 

DCMNDEL3 

IEECVET8 

E8 

DELETE ROUTINE 3 MB 

348 

(150 

SIGNED 

4 

DCMNDEL4 

IEECVET9 

E9 

DELETE ROUTINE 4 MB 

352 

(160) 

SIGNED 

4 

DCMN0PT1 

IEECVETA 

EA 

OPTIONS ROUTINE 1 MB 

356 

(164) 

SIGNED 

4 

DCMNPFK1 

IEECVFTA 

FA 

PFK ROUTINE 1 MB 

360 

(168) 

SIGNED 

4 

DCMNPFK2 

IEECVFTB 

FB 

PFK ROUTINE 2 MB 

364 

(160 

SIGNED 

4 

DCMNERRO 

IEECVETC 

MB 

EC 

ASYNCHRONOUS ERROR ROUTINE 

368 

(170) 

SIGNED 

4 

DCMNMSG1 

IEECVETD 

ED 

MESSAGE ROUTINE 1 MB 

372 

(174) 

SIGNED 

4 

DCMNMSG2 

IEECVETE 

EE 

MESSAGE ROUTINE 2 MB 

376 

(178) 

SIGNED 

4 

DCMNMSG3 

IEECVFTD 

FD 

MESSAGE ROUTINE 3 MB 

380 

(170 

SIGNED 

4 

DCMNLPCR 

IEECVETF 

EF 

LIGHT PEN/CURSOR SERVICE MB 

384 

(180) 

SIGNED 

4 

DCMNOPCL 

IEECVETG 

EG 

OPEN-CLOSE ROUTINE MB 




TDCM 

LC28-1389-0 Cc) Copyright IBM Corp. 1980, 1985 


TDCM 

Data Area Descriptions 255 














Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


IFFSETS TYPE LENGTH NAME _DE SCRIPTION 

388 (184) SIGNED 4 DCMNCLN IEECVFTG FG CLEANUP MODULE MB 

392 (188) SIGNED 4 DCMNROLL IEECVETJ EJ ROLL MODE ROUTINE MB 

396 (180 SIGNED 4 DCMNTIMR IEECVETK EK TIMER INTERPRETER ROUTINE MB 

400 (190) SIGNED 4 DCMNINT1 IEECVFTL FL INTERFACE 1 ROUTINE MB 

404 (194) SIGNED 4 DCMNINT2 IEECVFTM FM INTERFACE 2 ROUTINE MB 

408 (198) SIGNED 4 DCMNINT3 IEECVFTN FN INTERFACE 3 ROUTINE MB 

412 (190 SIGNED 4 DCMNINT4 IEECVFTO FO INTERFACE 4 ROUTINE MB 

416 (1A0) SIGNED 4 DCMNINT5 IEECVFTP FP INTERFACE 5 ROUTINE MB 

420 (1A4) SIGNED 4 DCMNINT6 IEECVFTQ FQ INTERFACE 6 ROUTINE MB 

424 (1A8) SIGNED 4 DCMNINT7 IEECVFTT FT INTERFACE 7 ROUTINE MB 

DIDOCS MODULE TRACE AREA 

428 (1AC) CHARACTER 30 DCMTRACE DIDOCS MODULE TRACE AREA MB 

DCMTRAC2 "DCMTRACE+2" TRACE MOVE FROM-ADDRESS MB 

...1 111. DCMTRLEN "X-DCMTRACE" LENGTH FOR TRACE MOVE MB 

458 (1CA) CHARACTER 1 DCMTREN1 1ST BYTE OF TRACE ENTRY MB 

459 (1CB) CHARACTER 1 DCMTREN2 2ND BYTE OF TRACE ENTRY MB 

FOLLOWING GROUP OF BYTES ARE DEVICE DEPENDENT 


460 

(ICC) 

HEX 

1 

DCMASKEN 

ENTER MASK 

461 

(1CD) 

HEX 

1 

DCMASKCN 

CANCEL MASK 

462 

(ICE) 

HEX 

1 

DCMASKCR 

CURSOR MASK 

463 

(1CF) 

HEX 

1 

DCMASKLP 

LIGHT PEN MASK 


TDCM 

256 


MVS/370 Debug Hdbk Vol 5 


TDCM 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 

















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


464 

(1D0) HEX 

1 

DCMSKPF1 

1ST PFK TYPE MASK 

465 

(1D1) HEX 

1 

DCMSKPF2 

2ND PFK TYPE MASK 

466 

(1D2) HEX 

1 

DCMSKPF3 

3RD PFK TYPE MASK 

467 

(1D3) HEX 

1 

DCMSKPF4 

4TH PFK TYPE MASK 

468 

(1D4) HEX 

1 

DCMASKCL 

CLEAR KEY MASK 

469 

(1D5) HEX 

1 

DCMSKPA1 

PA1 KEY MASK 

470 

(1D6) HEX 

1 

DCMSKPA3 

PA3 KEY MASK 

471 

(1D7) HEX 

1 

(5) 

RESERVED 

ADDRESSES OF PARTS OF 

THE SCREEN IMAGE 

BUFFER WHEN IN 

FULL 

CAPABILITY MODE 







DCMSADCN 

FIRST ADCON IN LIST 

476 

(1DC) ADDRESS 

4 

DCMFLLA 

LAST LINE IN MSG AREA 

480 

(1E0) ADDRESS 

4 

DCMFLL1A 

LAST LINE IN MSG AREA + 1 

484 

(1E4) ADDRESS 

4 

DCMFLSCT 

SCT FOR LAST LINE IN MSG AREA 

488 

(1E8) ADDRESS 

4 

DCMFSCT1 

SCT FOR LAST LINE IN MSG AREA + 1 

492 

(1EC) ADDRESS 

4 

DCMFSSCT 

SSCT FOR LAST LINE IN MSG AREA + 1 

496 

(1F0) ADDRESS 

4 

DCMFENT2 

2ND LINE OF ENTRY AREA 

500 

(1F4) ADDRESS 

4 

(6) 

RESERVED 

ADDRESSES OF PARTS OF 

THE SCREEN IMAGE 

BUFFER WHEN IN 

MESSAGE STREAM MODE 





524 

(200 ADDRESS 

4 

DCMMLLA 

LAST LINE MSG AREA 

528 

(210) ADDRESS 

4 

DCMMLL1A 

LAST LINE IN MSG AREA + 1 


TDCM 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


TDCM 

Data Area Descriptions 257 















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 

532 (214) ADDRESS 4 DCMMLSCT SCT FOR LAST LINE IN MSG AREA 

536 (218) ADDRESS 4 DCMMSCT1 SCT FOR LAST LINE IN MSG AREA + 1 

540 (210 ADDRESS 4 DCMMSSCT SSCT FOR LAST LINE IN MSG AREA + 1 

544 (220) ADDRESS 4 (2) RESERVED 

ADDRESSES OF PARTS OF THE SCREEN IMAGE BUFFER WHEN IN 
STATUS DISPLAY MODE 

552 (228) ADDRESS 4 DCMDLLA LAST LINE IN MSG AREA 

556 (220 ADDRESS 4 DCMDLL1A LAST LINE IN MSG AREA + 1 

560 (230) ADDRESS 4 DCMDLSCT SCT FOR LAST LINE IN MSG AREA 

564 (234) ADDRESS 4 DCMDSCT1 SCT FOR LAST LINE IN MSG AREA + 1 

568 (238) ADDRESS 4 DCMDSSCT SSCT FOR LAST LINE IN MSG AREA + 1 

572 (230 ADDRESS 4 (2) RESERVED 

ADDRESSES TO BE RESOLVED DURING OPEN 


580 

(244) 

ADDRESS 

4 

DCMLSSCT 

ADDRESS OF THE 

LAST SSCT 

584 

(248) 

ADDRESS 

4 

(8) 

DCMLADCN 

RESERVED 

LAST ADCON 

IN LIST 

616 

(268) 

ADDRESS 

4 


RESERVED 



TDCM TDCM 

258 MVS/370 Debug Hdbk Vol 5 LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 
















Contains Restricted Materials of IBM 
Licensed Materials ■ Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


NUMBER OF LINES IN MESSAGE AREA AND ENTRY AREA VALUES 


620 

(260 

SIGNED 

1 

DCMFNLMA 

MAX NUMBER LINES IN MSG AREA WHEN 
FULL CAPABILITY MODE 

IN 

621 

(26D) 

SIGNED 

1 

DCMMNLMA 

MAX NUMBER LINES IN MSG AREA WHEN 
MESSAGE STREAM MODE 

IN 

622 

(26E) 

SIGNED 

1 

DCMDNLMA 

MAX NUMBER LINES IN MSG AREA WHEN 
STATUS DISPLAY MODE 

IN 

623 

(26F) 

SIGNED 

1 

DCMENTL1 

LINE NUMBER 1 OF 1ST LINE IN ENTRY 

AREA 

624 

(270) 

SIGNED 

1 

DCMENTL2 

LINE NUMBER 1 OF 2ND LINE IN ENTRY 

AREA 

625 

(271) 

SIGNED 

3 


RESERVED 


628 

(274) 

HEX 

2 

DCMFENRC 

ADDR OF 2ND LINE IN ENTRY AREA IN 
ROW-COLUMN FORMAT 


630 

(276) 

SIGNED 

2 

DCMENTPO 

OFFSET OF 1ST CHAR IN ENTRY AREA 


632 

(278) 

SIGNED 

4 

(2) 

RESERVED 


COMMAND BUFFER AREA FOR 

THE 

LAST COMMAND 

ENTERED 



640 

(280) 

CHARACTER 

128 

DCMCBUFA 

COMMAND BUFFER AREA FOR LAST COMMAND 






ENTERED 


SAVE 

AREAS 







768 

(300) 

SIGNED 

4 

DCMMODAD 

VIRT ADDR OF REAL TDCM AFTER OPEN 


768 

(300) 

CHARACTER 

4 

DCMCACRO 

CNTL BLK ACRONYM 'TDCM' BEFORE OPEN 


TDCM 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


TDCM 

Data Area Descriptions 259 










Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH 

NAME 

DESCRIPTION 

772 

(304) 

HEX 

6 

DCMAIDSV 

SAVE AREA FOR AID FROM RMI 

778 

(30A) 

SIGNED 

2 


RESERVED 

780 

(300 

SIGNED 

4 

(2) 

RESERVED 

788 

(314) 

SIGNED 

2 


RESERVED 

790 

(316) 

CHARACTER 

1 

DCMMFRMF 

FULL CAPABILITY MFORM VALUE 

791 

(317) 

CHARACTER 

2 

DCMDELFC 

FULL CAPABILITY DEL VALUE 

793 

(319) 

CHARACTER 

1 

DCMCONFC 

FULL CAPABILITY CON VALUE 

794 

(31A) 

SIGNED 

1 

DCMSEGFC 

FULL CAPABILITY SEG VALUE 

795 

(31B) 

SIGNED 

1 

DCMRNUMF 

FULL CAPABILITY RNUM VALUE 

796 

(310 

SIGNED 

2 

DCMRTMEF 

FULL CAPABILITY RTME VALUE 

798 

(31E) 

CHARACTER 

1 

DCMMFRMM 

MESSAGE STREAM MFORM VALUE 

799 

(31F) 

CHARACTER 

2 

DCMDELMS 

MESSAGE STREAM DEL VALUE 

801 

(321) 

CHARACTER 

1 

DCMCONMS 

MESSAGE STREAM CON VALUE 

802 

(322) 

SIGNED 

1 

DCMSEGMS 

MESSAGE STREAM SEG VALUE 

803 

(323) 

SIGNED 

1 

DCMRNUMM 

MESSAGE STREAM RNUM VALUE 

804 

(324) 

SIGNED 

2 

DCMRTMEM 

MESSAGE STREAM RTME VALUE 

806 

(326) 

SIGNED 

2 


RESERVED 

808 

(328) 

SIGNED 

4 

(3) 

RESERVED 

GENERAL EQUATED VALUES 


.11 

. 111. 


DCMPFKAL 

"110" SIZE OF THE PFK AREA 

MAPPING OF 

4 SCREEN CONTROL 

TABLE (SCT) 

ENTRY 

FIRST 

BYTE 

OF AN SCT 





1.. 

• • • • • 


DCMMSGR1 

"X'80*" RESERVED WAS DCMMSGWR 


.1. 

• • • • • 


DCMMSGIN 

"X f 40*" MESSAGE DISPLAYED IN LINE 


. .1 

• • • • • 


DCMMSGCN 

"X»20 f " MESSAGE CONTINUED ON NEXT LINE 


• • • 

L • • • • 


DCMMSGJK 

"X'10»" TO WRITE OUT-OF-LINE DISPLAY 

FROM MAY CONTAIN JUNK (SDS INTERFACE 2) 


• • • 

i... 


DCMMSGAD 

"X'08*" MESSAGE CAN BE DELETED AUTOMAT- 


TOCM 

260 


MVS/370 Debug Hdbk Vol 5 


TDCM 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS_TYPE_LENGTH NAME 


DESCRIPTION 


1 * * * • •«• 
» 1 *« «• • • 

.. 1 . • • • • 

• ••1 • • * * 


«»•« »1 • * 
• • • • »• 1 * 

• • • • .. .1 


ICALLY 

DCMMSGRD "X*04'" REQUEST HAS SPECIFIED MSG BE 

REMOVED 

DCMMSGIF "X'02 ,n INFORMATIONAL MESSAGE IN LINE 

DCMMSGST "X'01*" END OF TABLE INDICATOR 



DCMMSGAC "X'80»" ACTION MESSAGE 

DCMMSGC7 n X'40DESCRIPTOR CODE 7 MESSAGE 

DCMMSGR2 "X*20 ,B RESERVED HAS DCMMSGDM 

DCMMSGUA "X'10 ,B URGENT ATTENTION MESSAGE DIS¬ 

PLAYED IN LINE 

DCMMSGEA "X'08'" EVENTUAL ACTION MESSAGE DIS¬ 

PLAYED IN LINE HAS DCMMSGIR 
DCMMSGCT "X'04'" CONTINUATION LINE 

DCMMSGPP "X'02 ,n ISSUED BY PROBLEM PROGRAM 

DCMMSGCL "X*01'" CONTROL LINE OF IN LINE MLHTO 


MAPPING OF A SECONDARY SCREEN CONTROL TABLE (SSCT) ENTRY 


1 a • a a a a a 

• 1 • • a • a a 

• •la •«•• 

• ••1 •••• 

a a a a • • 1 • 

• ••• . . .1 


DCMSECCL "X'80*" CONTROL LINE OF OUT OF LINE DIS¬ 

PLAY 

DCMSECLL "X'40'" LABEL LINE OF OUT OF LINE DIS¬ 

PLAY 

DCMSECDL "X'20»" DATA LINE OF OUT OF LINE DISPLAY 

DCMSECBL "X'lO'" THIS LINE IS BLANKED 

DCMSECDD "X'02'" LINE RESERVED FOR DYNAMIC DIS¬ 

PLAY 

DCMSECST "X'Ol*" END OF TABLE INDICATOR 


820 (334) CHARACTER 


1 DCMEND 


END OF TDCM 


TDCH 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


Data Area Descriptions 






Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 

CROSS REFERENCE 


HEX HEX HEX HEX HEX HEX 



OFFSET 

VALUE 

NAME 

OFFSET VALUE 


OFFSET VALUE 

DCMACPFK 

123 

02 

DCMCDLR3 

12D 

10 

DCMDL 

10E 


DCMADCHP 

48 


DCMCDLR4 

12D 

08 

DCMDLLA 

228 


DCMADDRL 

2C 


DCMCDLR5 

12D 

04 

DCMDLL1A 

22C 


DCMADNUM 

FA 


DCMCDSP3 

12A 

80 

DCMDLREQ 

12C 

80 

DCMADOPN 

54 


DCMCH0PT 

12B 

10 

DCMDLSCT 

230 


DCMADSEC 

28 


DCMCIILP 

12C 

08 

DCMDNLMA 

26 E 


DCMAE 

129 

01 

DCMCLEAR 

128 

02 

DCMDOMPK 

20 


DCMAENTR 

40 


DCMCMIN5 

129 

04 

DCMDORMI 

121 

80 

DCMAIDSV 

304 


DCMCMIN7 

12A 

01 

DCMDSAUT 

HE 

04 

DCMAINS 

3C 


DCMCMRLL 

12D 

80 

DCMDSAV 

58 


DCMAMTAB 

24 


DCMCMSG1 

12B 


DCMDSCT1 

234 


DCMASBA 

127 

10 

DCMCMSG2 

12C 


DCMDSSCT 

238 


DCMASCRN 

30 


DCMCMSG3 

12D 


DCMDSTAT 

11E 


DCMASDA 

127 

40 

DCMCMSG4 

12E 


DCMDSTNH 

11E 

10 

DCMASEWA 

127 

08 

DCMCM2I 

129 

80 

DCMDSTNM 

11E 

20 

DCMASIN 

127 

20 

DCMCNTRL 

130 

80 

DCMDTBSY 

12D 

01 

DCMASKCL 

1D4 


DCMC0MAR 

129 

20 

DCMDUSE 

11F 

80 

DCMASKCN 

1CD 


DCMCOMAU 

128 

10 

DCMELGN 

1A 


DCMASKCR 

ICE 


DCMCOMNM 

128 

04 

DCMELONG 

12B 

08 

DCMASKEN 

ICC 


DCMC0MRD 

128 

08 

DCMEND 

334 


DCMASKLP 

1CF 


DCMCOMRM 

128 

20 

DCMENTL1 

26 F 


DCMASYCD 

12C 

01 

DCMC0M1 

128 


DCMENTL2 

270 


DCMASYNC 

127 


DCMC0M2 

129 


DCMENTPO 

276 


DCMASYRT 

12C 

02 

DCMC0M3 

12A 


DCMERASE 

122 

04 

DCMATI 

5 


DCMC0M4 

130 


DCMERPF 

129 

08 

DCMAWARN 

44 


DCMCON 

IOC 


DCMEWAND 

123 

20 

DCMAXL6N 

FC 


DCMCONFC 

319 


DCMEWASP 

120 

01 

DCMBADLN 

F6 


DCMCONMS 

321 


DCMFENRC 

274 


DCMBAINC 

F2 


DCMCORLN 

104 


DCMFENT2 

1F0 


DCMBLENT 

122 

80 

DCMCS 

11C 


DCMFLG1 

4 


DCMBLWRL 

122 

40 

DCMCSC 

11C 

80 

DCMFLLA 

1DC 


DCMBLWRR 

122 

20 

DCMCSO 

11C 

40 

DCMFLL1A 

1E0 


DCMBUFAD 

1C 


DCMCULNO 

125 


DCMFLSCT 

1E4 


DCMBYTCT 

F8 


DCMCVBIN 

14 


DCMFNLMA 

26C 


DCMCACRO 

300 


DCMCXSVE 

50 


DCMFRSCN 

120 

20 

DCMCANCL 

128 

01 

DCMDEL 

10A 


DCMFSCT1 

1E8 


DCMCBLNK 

129 

02 

DCMDELFC 

317 


DCMFSSCT 

1EC 


DCMCBUFA 

280 


DCMDELMS 

31F 


DCMINERR 

120 

02 

DCMCDLR1 

12D 

40 

DCMDELNT 

12B 

02 

DCMINLGN 

6C 


DCMCDLR2 

12D 

20 

DCMDELRI 

12C 

04 

DCMINNOR 

120 

04 


TDCM 

MVS/370 Debug Hdbk Vol 5 LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


TDCM 

262 




Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


HEX 

NAME OFFSET 

HEX 

VALUE 

NAME 

HEX 

OFFSET 

HEX 

VALUE 

NAME 

HEX HEX 

OFFSET VALUE 

DCMINPUT 

70 


DCMMSGIF 

328 

02 

DCMOCTTI 

18 

02 

DCMINSC 

121 

01 

DCMMSGIN 

328 

40 

DCMOLHLD 

12A 

02 

DCMINSSH 

122 

10 

DCMMSGJK 

328 

10 

DCMOLUNV 

12A 

08 

DCMINVLD 

12F 

40 

DCMMSGPP 

328 

02 

DCMOOMSS 

11F 

04 

DCMINVOP 

12C 

10 

DCMMSGRD 

328 

04 

DCMOOSDS 

11F 

01 

DCMI0CM1 

121 


DCMMSGR1 

328 

80 

DCMOPRLL 

11B 

10 

DCMI0CM2 

122 


DCMMSGR2 

328 

20 

DCMOPRMI 

123 

80 

DCMI0CM3 

123 


DCMMSGST 

328 

01 

DCMOPTAD 

11B 

40 

DCMIOCRD 

122 

02 

DCMMSGUA 

328 

10 

DCMOPTSG 

11B 

20 

DCMIONDX 

131 


DCMMSGWT 

12B 

80 

DCMOPTST 

11B 


DCMIOPRD 

128 

40 

DCMMSSCT 

21C 


DCMOPTTI 

18 

40 

DCMIORTN 

134 


DCMMYCMD 

12F 

80 

DCMOPTVR 

11B 

80 

DCMIOUNQ 

120 


DCMNCLN 

184 


DCMOTTMM 

18 

10 

DCMI0226 

120 

80 

DCMNCMD1 

14C 


DCMOUTPT 

4 

02 

DCMLADCN 

248 

0268 

DCMNDEL1 

150 


DCMPACK 

10 


DCMLGNTH 

F0 


DCMNDEL2 

154 


DCMPFKAL 

328 

6E 

DCMLINEN 

124 


DCMNDEL3 

158 


DCMPFKAT 

123 

08 

DCMLNCNT 

C 


DCMNDEL4 

15C 


DCMPFKIP 

12E 

10 

DCMLNNUM 

E 


DCMNDSP1 

140 


DCMPFKKN 

109 


DCMLPENT 

128 

80 

DCMNDSP2 

144 


DCMPFKLN 

4C 


DCMLSCRN 

34 


DCMNDSP3 

148 


DCMPFKNA 

12E 

80 

DCMLSSCT 

244 


DCMNERRO 

16C 


DCMPFKND 

12E 

40 

DCMLTPFK 

123 

01 

DCMNINT1 

190 


DCMPFKNM 

108 


DCMMCSFL 

6E 


DCMNINT2 

194 


DCMPFKNO 

12E 

20 

DCMMCSST 

11F 


DCMNINT3 

198 


DCMPFKWR 

12A 

04 

DCMMFRMF 

316 


DCMNINT4 

19C 


DCMPOSCU 

126 


DCMMFRMM 

31E 


DCMNINT5 

1A0 


DCMRDARM 

120 

10 

DCMMLLA 

20C 


DCMNINT6 

1A4 


DCMRDPFK 

123 

04 

DCMMLL1A 

210 


DCMNINT7 

1A8 


DCMREPLC 

129 

10 

DCMMLSCT 

214 


DCMNLPCR 

17C 


DCMRMINC 

100 


DCMMNLMA 

26D 


DCMNMSG1 

170 


DCMRMTTI 

18 

01 

DCMMODAD 

300 


DCMNMSG2 

174 


DCMRNUM 

10F 


DCMMSCT1 

218 


DCMNMSG3 

178 


DCMRNUMD 

113 


DCMMSGAC 

328 

80 

DCMN0PCL 

180 


DCMRNUMF 

31B 


DCMMSGAD 

328 

08 

DCMNOPT1 

160 


DCMRNUMM 

323 


DCMMSGAL 

FE 


DCMNPFK1 

164 


DCMRPCUR 

120 

40 

DCMMSGCL 

328 

01 

DCMNPFK2 

168 


DCMRQINC 

12C 

40 

DCMMSGCN 

328 

20 

DCMNPROC 

13C 


DCMRTME 

110 


DCMMSGCR 

12C 

20 

DCMNPRZ 

138 


DCMRTMED 

114 


DCMMSGCT 

328 

04 

DCMNROLL 

188 


DCMRTMEF 

31C 


DCMMSGC7 

328 

40 

DCMNTIMR 

18C 


DCMRTMEM 

324 


DCMMSGEA 

328 

08 

DCMOACRO 

0 


DCMRTPFK 

12A 

40 


TDCM 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


TDCM 

Data Area Descriptions 263 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


HEX HEX HEX HEX HEX HEX 


NAME 

—OFFSET 

VALUE 

NAME OFJ 

r SET 

VALUE 

NAME 

OFFSET 

VALUE 

DCMSADCN 

1D7 

01DC 

DCMSSRG 

123 

40 

DCMUTILD 

11D 

10 

DCMSCTCN 

102 


DCMSTEX 

12B 

20 

DCMUTILE 

11D 

08 

DCMSECBL 

328 

10 

DCMSTRT 

0 


DCMUTILF 

11D 

04 

DCMSECCL 

328 

80 

DCMSVC34 

12F 


DCMUTILT 

11D 


DCMSECDD 

328 

02 

DCMTASYN 

18 

04 

DCMVLPFK 

12A 

20 

DCMSECDL 

328 

20 

DCMTEST 

132 


DCMWINFD 

122 

08 

DCMSECLL 

328 

40 

DCMTEST1 

11D 

02 

DCMWQEXP 

6C 


DCMSECST 

328 

01 

DCMTEST2 

11D 

01 

DCMWRASY 

122 

01 

DCMSEG 

10D 


DCMTIMER 

18 

80 

DCMWRCDL 

12B 

04 

DCMSEGDF 

112 


DCMTIMES 

18 


DCMMRENT 

121 

02 

DCMSEGFC 

31A 


DCMTRACE 

1AC 


DCMWRINS 

121 

04 

DCMSEGMS 

322 


DCMTRAC2 

1AC 

01AE 

DCMWRMSG 

121 

10 

DCMSKPA1 

1D5 


DCMTREN1 

1CA 


DCMWRPAR 

121 

08 

DCMSKPA3 

1D6 


DCMTREN2 

1CB 


DCMWRPFK 

123 

10 

DCMSKPF1 

1D0 


DCMTRLEN 

1AC 

IE 

DCMHRWRN 

121 

20 

DCMSKPF2 

1D1 


DCMTYPE1 

12F 

20 

DCMMTBUF 

38 


DCMSKPF3 

1D2 


DCMUNMSG 

12B 

40 

DCMHTINT 

8 


DCMSKPF4 

1D3 


DCMUTILA 

UD 

80 

DCMH2250 

120 

08 

DCMSOUND 

121 

40 

DCMUTILB 

11D 

40 

DCMXINT1 

12A 

10 

DCMSPLIT 

129 

40 

DCMUTILC 

11D 

20 





TOCM 

264 


MVS/370 Debug Hdbk Vol 5 


TDCH 

LC28-I389-0 (c) Copyright IBM Corp. 1980, 1985 


Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


TIOCBUF 


Common Name ♦ TSO TIOC Buffer Prefix 
Macro ID : ikjtiocb 
DSECT Name : TIOCBUF 
Created by : IEDAY1, TIOC 

Subpool and Key : Common service area and key 0 
Size : 12 header, 6 trailer 

Pointed to by : TSBOBFP field of the TSB data area 
TSBIBFP field of the TSB data area 
BUFFTRLR field of the TIOCBUF data area 
BUFFHEAD field of the TIOCBUF data area 
TIOCFBFL field of the TIOCRPT data area 
Serialization : CMS lock 

Function s Contains information describing buffer contents and 
attributes. It resides in the common storage area. 

OFFSETS TYPE LENGTH NAME_DESCRIPTION 


(0) STRUCTURE 0 TIOCBUF 

(0) HEX 1 BUFFFL1 COMMON FLAG BYTE BIT DEFINITIONS 


BIT 6 RESERVED 


1 . 

BUFFIHOT 

"X'80'". BUFFER ON INPUT AND OUTPUT 
QUEUES 

.1. 

BUFFHDR 

"X'40'". HEADER BUFFER 

••X* •••• 

BUFFNLCR 

"X^O*". NEW LINE, CARRIAGE RETURN AT 

END OF TEST 

•••X • • • • 

BUFFEDIT 

"X'10 ,n . EDIT OPTION 

• ••• 1 • ■ • 

BUFFCNTL 

"X'08*". CONTROL OPTION SPECIFIED 

• ••• • 1 • • 

BUFFFULL 

n X'04. BUFFER IS FULL 

• ••• • • • 1 

BUFFHOLD 

"X»01*". OUTPUT BUFFER CONTAINING A HOLD 
OPTION TPUT MESSAGE 

(1) ADDRESS 

3 BUFFTRLR 

PTR TO NEXT TRAILER BFR OF THIS MSG. 

ALSO USED TO LINK TOGETHER BFRS WHICH 


ARE ON FREE QUEUE 


TIOCBUF TIOCBUF 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 Data Area Descriptions 265 







Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 



4 

(4) SIGNED 

4 

BUFFNDAT 

FREE BUFFER NO DATA 


4 

(4) CHARACTER 

1 

BUFFOFST 

OFFSET TO BEGINNING OF DATA 


5 

(5) CHARACTER 

1 

BUFFLNTH 

LENGTH OF TEXT IN DATA PORTION OF THE 
BUFFER 


6 

(6) CHARACTER 

2 

BUFFWORK 

RESERVED TSINPUT USE AS WORK AREA 


8 

(8) HEX 

1 

BUFFFL2 

HEADER BUFFER FLAG BIT DEFINITIONS 

BITS 

4-7 


RESERVED 




1 • • • • • • • 


BUFFPART 

"X'8 0'". PARTIAL INPUT LINE DUE TO 
BREAK-IN 



• 1 • • •••• 


BUFFFRAG 

"X'40'". FRAGMENT MESSAGE 





BUFFTJID 

"X'20*". THIS MSSG IS TJID MSSG 



• ••1 •••« 


BUFF3270 

"X'10'". BUFFER HAS 3270 CONTROL CHARS 


9 

(9) ADDRESS 

3 

BUFFHEAD 

POINTER TO THE NEXT MESSAGE ON THE QUEUE 
OR ZERO'S 


12 

(C) SIGNED 

4 

BUFFHDAT 

START OF DATA IN HEADER BUFFER 



• ••• 11 « « 


BUFFHDLN 

"BUFFHDAT-TIOCBUF". PREFIX SIZE FOR A 
HEADER BUFFER 



• ♦ • • lli • 


BUFFTRLN 

"BUFFHDLN" PREFIX SIZE FOR A TRAILER BFR 

R 

X 

BUFFFL1 X 


BUFFTRLR 

4 

X 

BUFFOFST X 

BUFFLNTH X 

BUFFWORK 

8 

X 

BUFFFL2 X 


BUFFHEAD 


TXOCBUF 

266 MVS/370 Debug Hdbk Vol 5 


TXOCBUF 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


TIOCRPT 


Common Name : TSO HOC Reference Pointer Table 
Macro ID s IKJTIOCP 
DSECT Name : TIOCRPT 
Created by : Module, IEDAY1 

Subpool and Key : Common service area and key 0 

Size i 120 bytes plus (n times 4) n= number of free buffer lists 
Pointed to by : TCXRPT field of the IEDQTCX data area 
Serialization s CMS lock, compare & swap logic 

Function t Contains the information required by TIOC to manage the 
terminals. It resides in the common storage area. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) 

STRUCTURE 

H 

TIOCRPT 


0 

(0) 

ADDRESS 

4 

TIOCQTIP 

BRANCH ENTRY POINT TO QTIP 

4 

(4) 

CHARACTER 

2 

TIOCNBF 

NUMBER OF TS BUFFERS 

6 

(6) 

CHARACTER 

2 

TI0CNFBF 

NUMBER OF TS BFRS ON FREE QUEUE 

8 

(8) 

CHARACTER 

2 

TI0CBFSZ 

TS BUFFER SIZE IN BYTES 

10 

(A) 

CHARACTER 

2 

TIOCNTSB 

NO. OF TSB'S 

12 

(C) 

ADDRESS 

4 

TIOCQRET 

QTIP RETURN ADDRESS 

16 

(10) 

CHARACTER 

2 

TIOCOWTH 

OWAIT THRESHOLD 

18 

(12) 

CHARACTER 

2 

TIOCRSTH 

RESTART THRESHOLD 

20 

(14) 

HEX 

1 

TIOCFLG 

FLAG BYTE BIT DEFINITIONS 

BITS 

5-7 



RESERVED 



1.. . 

> 1 9 • • 


TIOCSYLW 

"X , 80 ,n . SYSTEM IS IN LWAIT 


.1.. 

► 0 0 0 0 


TIOCTSAB 

"X'40*". TIME SHARING ENDING ABNORMALLY 


. .1, 

♦ • • • 


TIOCSTOP 

"X’ZO*". STOP TS REQUESTED 


TIOCRPT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 


\ 


1985 


TIOCRPT 

Data Area Descriptions 267 












Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 



• • « 1 •••• 


TIOCTJBF 

"X'lO*". TPUT W/TJID FOUND NO TS BUFFERS 


• ••• 1 • » « 


TIOCNOBF 

"X'OS*". TPUT FOUND NO TS BUFFERS ON 
EITHER FREE OR OUTPUT QUEUE 

21 

(15) CHARACTER 

1 

TIOCQTKY 

KEY OF QTIP CALLER 

22 

(16) SIGNED 

2 

TIOCUSCT 

TIOC USER COUNT 

24 

(18) CHARACTER 

2 

TIOCAOMX 

CURRENT MAXIMUM NO. OF OUTPUT BUFFERS 
ALLOWED EACH TERMINAL 

26 

(1A) CHARACTER 

2 

TIOCAIMX 

CURRENT MAXIMUM NO. OF INPUT BUFFERS 
ALLOWED EACH TERMINAL 

28 

(1C) CHARACTER 

2 

TIOCUSLW 

NO. OF BFRS THAT ARE RESERVED ON THE 

FREE QUEUE. LESS THAN THIS AMOUNT 

RESULTS IN A SYSTEM-WIDE LWAIT 

30 

(IE) SIGNED 

2 

TIOCNBFL 

NO. OF FREE BUFFER LISTS 

32 

(20) HEX 

1 

TIOCTSBS 

SIZE OF TSB'S 

33 

(21) ADDRESS 

3 

TIOCTSB 

ADDRESS OF THE TSB TABLE 

36 

(24) CHARACTER 

72 

TIOCSAVE 

REGISTER SAVE AND WORK AREA 

108 

(60 SIGNED 

4 

TIOCTECB 

TIME INTERVAL ECB 

112 

(70) SIGNED 

2 

TIOCRCLM 

RECONNECT LIMIT (MINUTES) 

114 

(72) SIGNED 

2 


RESERVED 

116 

(74) ADDRESS 

4 

TIOCLDS 

LINE DISCONNECT SUBTASK TCB 

120 

(78) ADDRESS 

4 


RESERVED 

124 

(70 ADDRESS 

4 

TIOCFBFL 

FREE BUFFER LIST(S). ONE LIST FOR EACH 


PAGE CONTAINING TIOC BUFFERS. AN EMPTY 
LIST IS INDICATED BY THE COMPLEMENTED 
ADDRESS OF A BUFFER ON THAT PAGE. 


TIOCRPT 

268 MVS/370 Debug Hdbk Vol 5 


TZOCRPT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 










Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

X 


TIOCQTIP 


4 

X 

TIOCNBF 

X 

TIOCNFBF 

8 

X 

TI0CBFS2 

X 

TIOCNTSB 

12 

X 


TIOCQRET 


16 

X 

TIOCOWTH 

X 

TIOCRSTH 

20 

X 

TI0CFL6 X TIOCQTKY X 

TIOCUSCT 

24 

X 

TI0CA0MX 

X 

TIOCAIMX 

28 

X 

TIOCUSLH 

X 

TIOCNBFL 

32 

X 

TIOCTSBS X 

TIOCTSB 


36 

X 

TIOCSAVE (72 BYTES) 



108 

X 


TIOCTECB 


112 

X 

TIOCRCLM 

X 

RESERVED 

116 

X 


TIOCLDS 


120 

X 


RESERVED 


124 

X 


TIOCFBFL 



TIOCRPT 

LC28-1389-0 (c) Copyright IBM Corp. 1980/ 1985 Data Area 


TIOCRPT 
Descriptions 269 




Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


H2I 


Common Name * Task Input/Output Table 
Macro ID : IEFTI0T1 

DSECT Name : No DSECT card put out by macro. TI0T1 may be used in the USING state¬ 
ment. 

Created by s Device allocation 

Subpool and Key : SNA (subpool 236 or 237) and key 0 
Size $ Variable 

Pointed to by t TCBTIO field of the TCB data area 

DCB. field of the DCB data area 

DSABTIOT field of the DSAB data area (DD entry TIOT) 

JCTSTIOT field of the JCT data area 

SMCATIOT field of the SMCA data area (master scheduler TI OT) 

TCBTIO field of the TCB data area 
Serialization : ENQ on SYSZTIOT 

Function : Provides the I/O support routines with pointers to JFCBs and 
to allocated devices. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) 

SIGNED 

4 

TI0T1 

"X"- TIOTPTR 





0 

(0) 

CHARACTER 

8 

TI0CNJ0B 

JOB NAME 

8 

(8) 

CHARACTER 

16 

TIOCSTEP 

FOR A JOB STEP THAT IS NOT A PROCEDURE 


STEP, 8-BYTE JOB STEP NAME AND 8 
RESERVED BYTES. FOR A JOB STEP THAT IS A 
PROCEDURE STEP, 8-BYTE PROCEDURE STEP 
NAME AND 8-BYTE JOB STEP NAME OF THE JOB 
STEP THAT CALLED THE PROCEDURE. 


TIOT 

270 


MVS/370 Debug Hdbk Vol 5 


TIOT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 







Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


DD ENTRY 

THERE IS A 16-BYTE DD ENTRY FOR EACH DD STATEMENT IN THE 
JOB STEP OR PROCEDURE STEP. (REFERENCES TO GDG (ALL) DATA 
SETS, THE J0BL1B DATA SET OR PGM=X.DDNAME CREATE STILL 
OTHER DD ENTRIES.) 

A DD ENTRY INCLUDES A DEVICE ENTRY. BEFORE ALLOCATION, 
THERE MAY BE SEVERAL DEVICE ENTRIES IN EACH DD ENTRY. 



• ••X X • • • 


TIOENTRY 

"X"- TIODDPTR 

24 

(18) SIGNED 

i 

TIOELNGH 

LENGTH, IN BYTES, OF THIS ENTRY (INCLUD¬ 
ING ALL DEVICE ENTRIES) 

25 

(19) BITSTRING 

i 

TIOESTTA 

STATUS BYTE A 


X««« i • * » 


TIOSLTYP 

"X'80 ,n - NONSTANDARD LABEL (TAPE) 
(OS/VS1) ENTRY NOT IN USE (0S/VS2) 


• X • • • • • • 


TIOSPLTP 

n X »4o*"- DURING ALLOCATION, SPLIT CYLIN¬ 
DER PRIMARY. (THIS IS THE FIRST DD ENTRY 
FOR A SPLIT CYLINDER.) DURING STEP TER¬ 
MINATION, NO UNALLOCATION NECESSARY. 




TIOSPLTS 

"X'20 DURING ALLOCATION, SPLIT CYLIN¬ 
DER SECONDARY. (THIS IS NOT THE FIRST DD 
ENTRY FOR A SPLIT CYLINDER.) DURING STEP 
TERMINATION, REMIND BUT NO UNLOADING. 


• ••X • • •* 


TIOSJBLB 

"X'10'"- JOBLIB INDICATOR 


a a a a 1 • • • 


TIOSDADS 

n X'08' n - DADSM ALLOCATION NECESSRY 


• ••• lit! 


TIOSLABL 

"X*04 ,n - LABELED TAPE. IF BIT 0 IS OFF, 
SL OR SUL. IF BIT 0 IS ALSO ON, AL OR 
AUL. 


a a a a a a 1 a 


TIOSDSP1 

n X , 02 ,w - REHIND/UNLOAD THE TAPE VOLUME 
(TAPE) PRIVATE VOLUME (DIRECT ACCESS) 


a a a a a a a X 


TI0SDSP2 

"X'01*"- REWIND THE TAPE VOLUME (TAPE) 
PUBLIC VOLUME (DIRECT ACCESS) 

26 

(1A) CHARACTER 

2 

TIOERLOC 

RELATIVE LOCATION OF POOL 

26 

CIA) CHARACTER 

1 

TIOEWTCT 

DURING ALLOCATION, NUMBER OF DEVICES 
REQUESTED FOR THIS DATA SET 

27 

(IB) CHARACTER 

1 

TIOELINK 

DURING ALLOCATION, LINK TO THE APPROPRI- 


ATE PRIME SPLIT, UNIT AFFINITY, VOLUME 
AFFINITY OR SUBALLOCATE TIOT ENTRY. 


TIOT TIOT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 Data Area Descriptions 271 







Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 



AFTER ALLOCATION, FLAG BYTE. 

1. TIOSYOUT THIS IS A SYSOUT DATA SET THAT 

CONTAINS DATA (AFTER CLOSE) 

TIOTRVOl "X'40 ,n - RESERVED 

TIOTTERM "X^O'"- DEVICE IS A TERMINAL 

TIOEDYNM "X*10 ,w - DYNAM CODED ON DD STATEMENT 

TIOEQNAM "X*08 ,n - QNAME CODED ON DD STATEMENT 

TIOESYIN n X’04 ,n - ENTRY FOR SPOOLED SYSIN DATA 

SET (OS/VS1) 

.1. TIOESYOT "X'02'"- ENTRY FOR SPOOLED SYSOUT DATA 

SET (OS/VS1) 

.1. TIOESSDS "X*02 ,n - ENTRY FOR A SUBSYSTEM DATA SET 

(0S/VS2) 

.1 TIOTREM n X'01 ,n - ENTRY FOR A REMOTE DEVICE 



28 (1C) CHARACTER 8 TIOEDDNM DD NAME 


36 (24) CHARACTER 3 TIOEJFCB RELATIVE TRACK ADDRESS (TTR) OF THE 

JFCB. (DURING ALLOCATION, TTR OF THE 
SIOT IF SUBALLOCATE WAS REQUESTED.) 

39 (27) BITSTRING 1 TIOESTTC STATUS BYTE C. USED DURING ALLOCATION 


ONLY. SET TO ZEROS AT END OF ALLOCATION. 

1. TIOSDKCR "X'80 ,B - MAIN STORAGE OR DASD ADDRESS 

.1. TIOSDEFR "X'40*"- DEFERRED MOUNT 

..1. TIOSAFFP n X'20'"- PRIMARY UNIT AFFINITY 

...1 _ TIOSAFFS "X'lO*"- SECONDARY UNIT AFFINITY 

- 1... TIOSVOLP "X*08'"- PRIMARY VOLUME AFFINITY 

.1.. TIOSVOLS "X'04'"- SECONDARY VOLUME AFFINITY 

.1. TIOSBALP "X'02'"- PRIMARY SUBALLOCATE 

.1 TIOSBALS "X'Ol*"- SECONDARY SUBALLOCATE 


DEVICE ENTRIES 

1. DURING ALLOCATION 

ONE DEVICE ENTRY FOR EACH DEVICE REQUIRED, OR FOR 
EACH PUBLIC DEVICE ELIGIBLE. 

2. DURING PROBLEM PROGRAM 

ONE DEVICE ENTRY FOR EACH ALLOCATED DEVICE. 


i 


TIOT 

272 


MVS/370 Debug Hdbk Vol 5 


TIOT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 












Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


-QEFSETS_TYPE L ENGTH NAME _ DESCRIPTION 


40 (28) BITSTRING 1 TIOESTTB 


1 * • • • • 

. 1 .» .. 
• • 1 • « . 

• * • 1 • . 

* * * * 1 • 

. 1 


TIOSUSED 

TIOSREQD 

TIOSPVIO 

TIOSVLSR 

TIOSSETU 

TIOSMNTD 


41 


• * * * < • 1 * 

• * • • * * * 1 
(29) ADDRESS 


TIOSUNLD 

TIOSVERF 

TIOEFSRT 


STATUS BYTE B DURING ALLOCATION AND DUR¬ 
ING PROBLEM PROGRAM 
"X^O*"- DATA SET IS ON DEVICE 
n X*40 *™— DATA SET WILL USE DEVICE 
"X'20'"- DEVICE VIOLATES SEPARATION 
"X’lO*"- VOLUME SERIAL PRESENT 
"X'OS'"- SETUP MESSAGE REQUIRED 
"X’04**•— IF 0, DELETE UNLOADED VOLUME IF 
UNLOAD REQUIRED. IF 1, RETAIN UNLOADED 
VOLUME IF UNLOAD REQUIRED. 

"X'02 ,n - UNLOAD REQUIRED 
"X'Ol'"- VERIFICATION REQUIRED 
DURING PROBLEM PROGRAM, ADDRESS OF UCB. 
DURING ALLOCATION, BITS 0-11 CONTAIN 
OFFSET, IN THE UCB LOOK-UP TABLE, TO AN 
ADDRESS FOR A DEVICE REQUIRED OR ELIGI¬ 
BLE FOR THIS DATA SET. THE UCB LOOK-UP 
TABLE HAS ADDRESSES OF UCB'S. BITS 12-23 
CONTAIN OFFSET, IN THE STEP VOLUME TABLE 
(VOLT), TO THE VOLUME SERIAL NUMBER FOR 
THE VOLUME REQUIRED OR ELIGIBLE FOR THIS 
DATA SET. 


TIOT POOL ENTRY 


..1. 11.. 


POOLSTAR 

"X" 


44 

(20 CHARACTER 

1 


RESERVED 


45 

(2D) SIGNED 

1 

TIOPNSLT 

NUMBER OF 

SLOTS FOR POOL 

46 

(2E) CHARACTER 

1 


RESERVED 


47 

(2F) SIGNED 

1 

TIOPNSRT 

NUMBER OF 

DEVICES (FILLED SLOTS) 

48 

(30) CHARACTER 

8 

TIOPPOOL 

POOL NAME 


56 

(38) HEX 

1 

TIOPSTTB 

STATUS OF 

SLOT 

57 

(39) ADDRESS 

3 

TIOPSLOT 

UCB ADDRESS OR EMPTY SLOT 

60 

(30 CHARACTER 

4 

TIOTFEND 

FINAL END 

OF THE TIOT BINARY ZEROS 


TIOT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


TIOT 

Data Area Descriptions 273 












Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


TQE 


Common Name : Timer Queue Element 
Macro ZD : IHATQE 
DSECT Name : TQE 

Created by : IEAVRT00 (STIMER function) or SETDIE user 
Subpool and Key : 253 (task) or 245 (real/wait) and key 0 

Size s 128 bytes 

Pointed to by : PCCATQEP field of the PCCA data area 

TQEFLNK field of the TQE data area (forward link) 
TQEBLNK field of the TQE data area (backward link) 
TCBTQE field of the TCB data area 
Serialization : Dispatcher lock 

Function : Each TQE represents a time interval. It is established 
by use of the STIMER function. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) STRUCTURE 

0 

TQE 

,TQEPTR TIMER QUEUE ELEMENT 

0 

(0) FLOATING 

8 



0 

(0) CHARACTER 

4 

TQETQE 

TQE IDENTIFICATION 

4 

(4) ADDRESS 

4 

TQEFLNK 

ADDRESS OF NEXT TQE 

8 

(8) ADDRESS 

4 

TQEBLNK 

ADDRESS OF PREVIOUS TQE 

12 

(C) SIGNED 

2 

TQEAID 

REQUESTORS ASID 

14 

(E) BITSTRING 

1 

TQEFLGS 

TQE FLAG BYTE 1 


1 • * » • • * • 


TQEOFF 

n X'80 ,n TQE IS OFF TIMER QUEUE 


.1. 


TQETOD 

"X*40*" TOD OPTION SPECIFIED 


• ••1 •••• 


TQEWLIM 

"X»10 ,w WAIT LIMIT EXCEEDED 


* • • • 1 • • * 


TQEINCOM 

n X'08'" INTERVAL IS COMPLETE 


.1. . 


TQEXITSP 

n X'04 ,n AN EXIT WAS SPECIFIED 


• ••« • • 1 1 


TQETYPE 

"X»03'" TQE TYPE 00=TASK TYPE 01=WAIT 
TYPE 11-REAL TYPE 

15 

(F) BITSTRING 

1 

TQEFLGS2 

TQE FLAG BYTE 2 


1«*» •••• 


TQECOMP 

"X'80 ,n REAL TQE IS BEING TIMED 


•1*« 


TQEUSER 

"X'40' n NON SYSTEM TQE 


TQE 


TQE 

274 

MVS/370 Debug Hdbk Vol 5 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 













Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 



*. 1» »*•« 


TQECRH 

"X»20 ,n CHNL RECONFIG HOME TQE 


...1 _ 


TQEDUM 

"X'10'" DUMMY SYSTEM TQE 


.... 1. .. 


TQELM 

"X'08* n TIME LIMIT CHECKING SYSTEM TQE 


.1.. 


TQEOPT 

"X'04 ,n SYSTEM RESOURCES MANAGER TQE 


.1. 


TQEMF1 

"X’02*" MF/1 SYSTEM TQE 


.1 


TQEMIDN 

"X'01»" MIDNIGHT SYSTEM TQE 

16 

(10) SIGNED 

4 

TQEVAL(2) 

EXPIRATION TIME OR TIME LEFT 

24 

(18) ADDRESS 

4 

TQESADDR 

ADDRESS OF PP SAVE AREA 

28 

(1C) ADDRESS 

4 

TQEEXIT 

ADDRESS OF USER EXIT RTN 


...1 11.. 


TQEECB 

"TQEEXIT" ECB IF WAIT TYPE TQE 

32 

(20) ADDRESS 

4 

TQETCB 

ADDRESS OF USER TCB 

36 

(24) ADDRESS 

4 

TQEASCB . 

ADDRESS OF USER ASCB 

40 

(28) SIGNED 

4 

TQELHPSW 

FIRST WORD OF CURRENT PSW 

44 

(20 CHARACTER 

44 

TQESRB 

SRB 

44 

(20 SIGNED 

4 

TQEDREGS(ll) 

DIE ENTRY. 

88 

(58) BITSTRING 

1 

TQEFLGS3 

TQE FLAG BYTE 3 


1. 


TQEDIE 

"X'80 ,n DIE TQE 

89 

(59) CHARACTER 

27 


RESERVED 

116 

(74) SIGNED 

4 

TQERSAVE 

REG SAVE AREA SETDIE 

120 

(78) SIGNED 

4 

TQESTCK(2) 

STCK AREA FOR SETDIE 


•111 1... 


TQESTCKL 

"TQESTCK" STCK AREA-LEFT HALF 


•Ill 11.. 


TQESTCKR 

"TQESTCK+4" STCK AREA-RIGHT HALF 

128 

(80) CHARACTER 

1 

TQEEND 

END OF TQE 


1. 


TQELEN 

"TQEEND-TQE" LENGTH OF TQE 


TQE 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


TQE 

Data Area Descriptions 275 















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


TSB 


Common Name : TSO Terminal Status Block 
Macro ID : IKJTSB 
DSECT Name : TSB 

created by : TSB - TIOC routine, IEDAY1, TCAS routine, IKTCAS31; TSBX - TCAS rou¬ 
tine, IKTCAS31 

Subpool and Key : Common service area and key 6 
Size : TSB - 120 bytes; 

Pointed to by : ASCBTSB field of the ASCB data area 
TIOCTSB field of the TIOCRPT data area 

TCASTSB field of the TCAST data area (first TSO/VTAM TSB) 

TSBXFWD field of the TSB data area 
TSBXBCK field of the TSB data area 
Serialization : CMS lock, compare & swap logic 

Function i The TSB contains information pertaining to a terminal user's status. 

The TSBX provides information pertaining to a TSO/VTAM time sharing terminal, 
and pointers pertaining to a TSO/VTAM user address space. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) STRUCTURE 

120 

TSB 


0 

(0) ADDRESS 

4 

TSBASCBA 

POINTER TO ASCB 

0 

(0) CHARACTER 

1 

TSBSTAT 

TERMINAL STATUS BYTE BIT DEFINITIONS 


1 • * • 


TSBINUSE 

TSB IN USE 


• X •• 


TSBLWAIT 

KEYBOARD LOCKED DUE TO A LACK OF INPUT 
BUFFERS 


• •X* •11 • 


TSBDSPLY 

TSB REPRESENTS A DISPLAY SCREEN 


• • a X »••• 


TSBN0BUF 

INDICATES TPUT FOUND NO BUFFERS 


• ••• 1 • • • 


TSBITOFF 

PROHIBIT NON-SUPERVISORY INTER- TERMINAL 
MSGS TO USERS TERMINAL 


• • • • * X «* 


TSBDISC 

TSB HAS BEEN THRU LOGOFF 


• • • • • • 1 • 


TSB3270 

TSB REPRESENTS A 3270 TERMINAL 


• ••• • • • 1 


TSBATNLD 

ATTN FOR INPUT LINE DELETE 

1 

(1) ADDRESS 

3 

TSBASCB 

POINTER TO ASCB 

4 

(4) CHARACTER 

1 

TSBFLG1 

FIRST FLAG BYTE BIT DEFINITIONS 


1. 


TSBANSR 

ATTN SIMULATION REQUESTED 


TSB 

276 


MVS/370 Debug Hdbk Vol 5 


TSB 

LC28-13S9-0 (c) Copyright IBM Corp. 1980, 1985 








Contains Restricted Materials of IBM 
Licensed Materials * Property of IBM 


P.EESEIS_IYRi_ LENGTH NAME _ DESCRIPTION 



... T ! f f 

• 1 • » • • • 4 


TSBOFLSH 

_ sea 

OUTPUT TRAILER Q IS TO BE FLUSHED 


• •X* • • •• 


TSBOWIP 

A TPUT IS IN PROGRESS 


• ••1 » * t * 


TSBWOWIP 

HAITING IN OMAIT IN PROGRESS 


••it 1 • •« 


TSBIFLSH 

INPUT QUEUE FLUSH IN PROGRESS 


• « 1 «* 


TSBTJOW 

TJID TPUT ENCOUNTERED OWIP 


• « • • • * 1 « 


TSBTJIP 

A TJID TPUT IS IN PROGRESS 


• • • • X 


TSBTJBF 

TJID TPUT FOUND NO TS BUFFERS 

5 

(5) ADDRESS 

3 

TSBWTCB 

ADDR OF TCB OF TASK WAITING ON TSBECB 

8 

(8) CHARACTER 

1 

TSBLNSZ 

PHYSICAL LINE SIZE OF TERMINAL 

9 

(9) ADDRESS 

3 

TSBOTBFP 

PTR TO TRAILER BUFFER(S) AFTER HEADER 
BUFFER FOR MSG HAS BEEN REMOVED 

12 

(C) CHARACTER 

1 

TSBNOBF 

NO. OF BUFFERS ON OUTPUT QUEUE 

13 

(D) ADDRESS 

3 

TSBOBFP 

PTR TO OUTPUT BUFFER QUEUE 

16 

(10) CHARACTER 

1 

TSBFLG2 

SECOND FLAG BYTE BIT DEFINITIONS 


1 • • • • •« • 


TSBBIPI 

PARTIAL LINE PROMPTING COMPLETE 


• X • • • • • • 


TSBAUTON 

AUTO PROMPTING REQUESTED 


• • 1 • •••• 


TSBBRKIN 

BREAKIN HAS OCCURED 


•«• X •••• 


TSBAULST 

AUTO LINE NUMBERING STARTED 


• t » • 1 • * • 


TSBAUTOC 

AUTO CHARACTER PROMPT STARTED 


• ••• • X * * 


TSBSTAUT 

PROMPT USER WITH NEXT LINE NO. 


« » t • • * 1 * 


TSBSATN1 

BITS 6 AND 7 ARE USED TO IND 


• ••• • • • X 


TSBSATN2 

THE NO. OF CHARS (1-4) IN THE CHAR 

STRING FOR SIMULATED ATTN 

17 

(11) ADDRESS 

3 

TSBITBFP 

PTR TO INPUT TRAILER BUFFERS RESULTING 
FROM TGET WITH INSUFFICIENT BUFFER SIZE 

20 

(14) CHARACTER 

1 

TSBNIBF 

NO. OF BUFFERS ON INPUT QUEUE 

21 

(15) ADDRESS 

3 

TSBIBFP 

PTR TO INPUT BUFFER QUEUE 

24 

(18) CHARACTER 

1 

TSBFLG3 

THIRD FLAG BYTE BIT DEFINITIONS BIT 7 
RESERVED 


1 «• • 


TSBATTN 

ATTENTION HAS BEEN IGNORED 


* X i • • • • • 


TSBTJMSG 

TSOUTPUT PROCESSING TJID MSG 


••X* •••• 


TSBSPIT 

STOP PROMPTING IF TCLEARQ OR STBREAK 


« • • 1 » • • • 


TSBNBKSP 

NEXT CHAR IN USER'S BFFR IS A BACKSPACE 
CHAR 


• ••• X • »t 


TSBAWOIP 

AN ASID TPUT IS WAITING FOR A NORMAL 


TSB 

LC28-1389-0 Cc) Copyright IBM Corp. 1980, 1985 


TSB 

Data Area Descriptions 277 
















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 






TPUT TO COMPLETE 


• ••• i 1 • • 


TSBTPUT 

TCAM PROCESSING OF A TPUT IS NOT YET 
COMPLETE (CORRESPONDS TO QCBTPUT) 


»• • • • • X • 


TSBNOBRK 

USE OF BREAK FEATURE NOT CURRENTLY 
ALLOWED FOR THIS TERMINAL 


.1 


TSBNFLOP 

FLASHBACK OF PASSWORD 

25 

(19) CHARACTER 

1 

TSBFLG5 

FIFTH FLAG BYTE. 


1111 111. 



RESERVED 


. 1 


TSBVTAM 

THIS IS A VTAM TSB 

26 

(1A) CHARACTER 

2 

TSBTERMC 

TERMINAL CHARACTERISTICS 

26 

(1A) CHARACTER 

1 

TSBTERM1 

1ST FLAG BYTE 


1 • t * •••• 


TSBCIHBN 

TIME-OUT INHIBITED 


.1. 


TSBCBRK 

BREAK FEATURE 


. .1. 


TSBCATTN 

ATTENTION FEATURE 


. . .1 _ 


TSBC5041 

LINE IS 5041 


_ 1 ... 


TSBC2741 

TERMINAL IS 2741 


> • • • • 1 « • 



RESERVED 


• • • * * • 1 • 



RESERVED 


• ••• • • • X 



RESERVED 

27 

(IB) CHARACTER 

1 

TSBTERM2 

2ND FLAG BYTE 


1. 



RESERVED 


• 1 •« •••• 



RESERVED 


••X* •••• 


TSBCTWX 

TERMINAL IS TWX 


• ••X * • • • 



RESERVED 


* • • * 1 * « • 



RESERVED 


• ••• • X • • 



RESERVED 


« • • * • • 1 • 



RESERVED 


• • • 1 


TSBC1050 

TERMINAL IS 1050 

28 

(1C) SIGNED 

4 

TSBECB 

ECB FOR INTER-TERMINAL COM- MUNICATION 
(TPUT WITH TJID) 

32 

(20) SIGNED 

2 

TSBWTJID 

TJID OF TASK WAITING ON TSBECB 

34 

(22) SIGNED 

2 

TSBSTCC 

SPECIAL USER CHAR FIELD 

34 

(22) CHARACTER 

1 

TSBLNDCC 

LINE DELETE CHARACTER 

35 

(23) CHARACTER 

1 

TSBCHDCC 

CHARACTER DELETE CHARACTER 


36 (24) CHARACTER 2 TSBATNLC NO. OF SUCCESSIVE OUTPUT LINES BETWEEN 


TSB 

278 


MVS/370 Debug Hdbk Vol 5 


TSB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 









Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


5EE SE IS_IYPE_ LENGTH NAME _ DESCRIPTION 

ATTENTION SIMULATION 


38 

(26) CHARACTER 

2 

TSBATNTC 

NUMBER OF CONTINUOUS 1-SECOND TIME 
INTERVALS 

90 

(28) CHARACTER 

1 

TSBLNNO 

NO. OF LINES ON A DISPLAY SCREEN 

91 

(29) CHARACTER 

1 

TSBFLG9 

FLAG BYTE BIT DEFINITIONS 


1 * » » • • • • 


TSBOCAB 

OUT-OF-CORE ABEND 


• 1 • • • • • * 


TSBIWAIT 

INPUT WAIT IN PROGRESS 


• • 1 • •••• 


TSBOWAIT 

OUTPUT WAIT IN PROGRESS 




TSBHUNG 

TERMINAL HAS HUNG UP 


• ••• 1 • * • 


TSBHOLD 

TPUT HOLD IN PROGRESS 


. 1 . . 


TSBCANC 

SESSION CANCELLED 


. 1. 


TSBGETBF 

TJID TPUT MAY GET AN EXTRA ALLOWANCE OF 
OUTPUT BUFFERS 


• • • * «• • X 


TSBHLDL 

DON'T DISCONNECT LINE AFTER LOGOFF 

92 

(2A) CHARACTER 

2 

TSBASRCE 

TCAM TERMINAL INDEX. EQUIVALENT TO 
PRFSRCE IN TCAM INPUT BUFFERS. 

99 

(20 CHARACTER 

9 

TSBATNCC 

CHARACTER STRING USED FOR ATTENTION SIM¬ 
ULATION 

98 

(30) SIGNED 

9 

TSBAUTOS 

STARTING AND CURRENT SEQ NO. FOR AUTO 
LINE NUMBERING 

52 

(39) SIGNED 

9 

TSBAUTOI 

INCREMENT VALUE FOR AUTO LINE NUMBERING 

56 

(38) SIGNED 

9 

TSBERSDS 

CHARS USED TO ERASE SCREEN 

60 

(30 SIGNED 

9 

TSBCTCB 

TCB ADDRESS OF TASK CURRENTLY DOING A 
TPUT 

69 

(90) CHARACTER 

8 

TSBRCB 

TCAM RESOURCE CTL BLK 

69 

(90) ADDRESS 

9 

TSBRQCB 

RCB QCB POINTER 

68 

(99) ADDRESS 

9 

TSBLINKA 

RCB LINK WORD 

68 

(99) CHARACTER 

1 

TSBPRI 

TPOSTING PRIORITY 

69 

(95) ADDRESS 

3 

TSBLINKB 

RCB LINKING FIELD 


TSB 

LC28-1389-0 (c) Copyright IBM Com. 1980, 1985 


TSB 

Data Area Descriptions 279 















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


72 

(48) CHARACTER 

8 

TSBTPOST 

TPOSTING COMMUNICATIONS AREA UPDATED 

ONLY WITH CS/CDS 

72 

(48) CHARACTER 

i 

TSBTPFLG 

TPOSTING FLAGS BIT DEFINITIONS BITS 3 7 
RESERVED 


1 . 

• X • • •••• 


TSBPOSTO 

TSBTPQCB 

TPOST OF TSB OUTSTANDING 

TPOST TERM. DEST. QCB 


. .1. 


TSBTPAYI 

TPOST TSI TO TSINPUT 


...1 — 


TSBNEWID 

UPDATE QCB TJID WITH NEW ASCBASID 


_ 1 ... 



RESERVED 


. 1 .. 



RESERVED 


. 1 . 



RESERVED 


. 1 



RESERVED 

73 

(49) CHARACTER 

i 


RESERVED 

74 

(4A) CHARACTER 

i 

TSBFLAGM 

QCBFLAG SUBSTITUTION MASK. INDICATES BIT 
POSITIONS TO CHANGE IN QCBFLAG. 

75 

(4B) CHARACTER 

i 

TSBFLAGV 

QCBFLAG SUBSTITUTION VALUE. INDICATES 

BIT VALUES TO SUBSTITUTE FOR CHANGING 

BIT POSITIONS IN QCBFLAG. 

76 

(40 CHARACTER 

i 

TSBF2M 

QCBTS0F2 SUBSTITUTION MASK 

77 

(4D) CHARACTER 

i 

TSBF2V 

QCBTS0F2 SUBSTITUTION VALUE 

78 

(4E) CHARACTER 

i 

TSBF1M 

QCBTS0F1 SUBSTITUTION MASK 

79 

(4F) CHARACTER 

i 

TSBF1V 

QCBTS0F1 SUBSTITUTION VALUE 

80 

(50) CHARACTER 

i 

TSBATTNC 

NO. OF UNPROCESSED ATTN'S 

81 

(51) CHARACTER 

i 

TSBSTAX 

NO. OF UNSCHEDULED STAX EXITS 

82 

(52) CHARACTER 

2 

TSBLINE 

LINE ADDRESS OR 3705 RESOURCE I.D. OF 
THIS TERMINAL. 

84 

(54) SIGNED 

4 

TSBMINL 

NO. OF MINUTES LEFT BEFORE A DISCON¬ 
NECTED USER WILL BE LOGGED OFF. 

84 

(54) ADDRESS 

4 

TSBLECB 

TIOC LOGOFF WAITS ON THIS ECB WHILE TIOC 
FINISHES TCAM PROCESSING FOR A TERMINAT¬ 
ING MEMORY. 

88 

(58) CHARACTER 

8 

TSBPSWD 

LOGON PASSWORD 

96 

(60) ADDRESS 

4 

TSBEXTNT 

ADDRESS OF TSB EXTENTION 


TSB 

280 


MVS/370 Debug Hdbk Vol 5 


TSB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 










Contains Restricted Materials of IBM 
Licensed Materials ■ Property of IBM 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


100 

(64) CHARACTER 

4 


RESERVED 


109 

(68) CHARACTER 

8 

TSBTRMID 

TERMINAL SYMBOLIC NAME 


112 

(70) CHARACTER 

8 

TSBSF1 

SECURITY FIELD 1 


120 

(78) CHARACTER 

D 

TSBEND 

TSB FORCED TO DOUBLE WORD BOUNDARY 


0 

(0) STRUCTURE 

88 

TSBX 



0 

(0) ADDRESS 

4 

TSBXFWD 

TSO/VTAM TSB FORWARD POINTER 


4 

(4) ADDRESS 

4 

TSBXBCK 

TSO/VTAM TSB BACKWARD POINTER 


8 

(8) SIGNED 

4 

TSBXECB 

X-MEM SYNC ECB FOR RECONNECT 


12 

(C) SIGNED 

4 


RESERVED 


16 

(10) CHARACTER 

8 


RESERVED 


24 

(18) CHARACTER 

8 

TSBXUID 

USER IDENTIFICATION 


32 

(20) CHARACTER 

1 

TSBXFLG1 

FIRST TSBX FLAG BYTE 



1. 


TSBXASCI 

ASCII CODE SPECIFIED ON BIND 



• X « • •••• 


TSBXACTV 

TERMINAL CONTROL IN ADDRESS SPACE. 



••X* 


TSBXLOGF 

VTAM LOGOFF RECURSION 



•••X * « • • 


TSBXWREC 

WAITING FOR RECONNECT 



.... 1111 



RESERVED 


33 

(21) CHARACTER 

3 


RESERVED 


36 

(24) ADDRESS 

4 

TSBXTVWA 

POINTER TO TSO/TVWA WORK AREA (TVWA) 


40 

(28) ADDRESS 

4 

TSBXTIM 

CURRENT 'TIM 1 POINTER 


44 

(20 ADDRESS 

4 

TSBXTOM 

CURRENT 'TOM* POINTER 


48 

(30) SIGNED 

4 


RESERVED 


52 

(34) ADDRESS 

4 

TSBXSRBI 

POINTER TO THE TIM SRB 



TSB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


TSB 

Data Area Descriptions 281 




















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME __ DESCRIPTION 

56 (38) ADDRESS 4 TSBXSRB POINTER TO THE TOM SRB 

60 (30 ADDRESS 4 TSBXCSAP POINTER TO THE CSA AREA FOR ASID TPUTS 

64 (40) ADDRESS 4 TSBXLBUF POINTER TO THE LOGON BUFFER 

68 (44) UNSIGNED 2 RESERVED 

70 (46) SIGNED 2 TSBXAIND TSO/VT USER APPL INDEX 

72 (48) CHARACTER 4 TSBXTERM TERMINAL CHARACTERISTICS 

72 (48) UNSIGNED 1 TSBXTMTP TERMINAL TYPE 

73 (49) CHARACTER 1 RESERVED 

74 (4A) SIGNED 2 TSBXTMBF TERMINAL BUFFER SIZE 


76 

(40 

ADDRESS 

4 

TSBXRPL 

POINTER TO RPL IN TCAS 

80 

(50) 

CHARACTER 

8 


RESERVED 

88 

(58) 

CHARACTER 

0 

TSBXEND 

END OF TSBX FORCED TO DOUBLE WORD BOUND- 


ARY 


TSB 

282 


MVS/370 Debug Hdbk Vol 5 


TSB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


CROSS REFERENCE 


NAME 

HEX 

OFFSET 

HEX 

VALUE 

NAME 

HEX 

OFFSET 

HEX 

VALUE_ 

NAME 

HEX 

OFFSET 

HEX 

VALUE 

TSB 

0 


TSBFLG4 

29 


TSBPSWD 

58 


TSBANSR 

4 

80 

TSBFLG5 

19 


TSBRCB 

40 


TSBASCB 

1 


TSBF1M 

4E 


TSBRQCB 

40 


TSBASCBA 

0 


TSBF1V 

4F 


TSBSATN1 

10 

02 

TSBASRCE 

2A 


TSBF2M 

4C 


TSBSATN2 

10 

01 

TSBATNCC 

2C 


TSBF2V 

4D 


TSBSF1 

70 


TSBATNLC 

24 


TSBGETBF 

29 

02 

TSBSPIT 

18 

20 

TSBATNLD 

0 

01 

TSBHLDL 

29 

01 

TSBSTAT 

0 


TSBATNTC 

26 


TSBH0LD 

29 

08 

TSBSTAUT 

10 

04 

TSBATTN 

18 

80 

TSBHUNG 

29 

10 

TSBSTAX 

51 


TSBATTNC 

50 


TSBIBFP 

15 


TSBSTCC 

22 


TSBAULST 

10 

10 

TSBIFLSH 

4 

08 

TSBTERMC 

1A 


TSBAUTOC 

10 

08 

TSBINUSE 

0 

80 

TSBTERM1 

1A 


TSBAUTOI 

34 


TSBITBFP 

11 


TSBTERM2 

IB 


TSBAUTON 

10 

40 

TSBITOFF 

0 

08 

TSBTJBF 

4 

01 

TSBAUTOS 

30 


TSBIWAIT 

29 

40 

TSBTJIP 

4 

02 

TSBAWOIP 

18 

08 

TSBLECB 

54 


TSBTJMSG 

18 

40 

TSBBIPI 

10 

80 

TSBLINE 

52 


TSBTJOW 

4 

04 

TSBBRKIN 

10 

20 

TSBLINKA 

44 


TSBTPAYI 

48 

20 

TSBCANC 

29 

04 

TSBLINKB 

45 


TSBTPFLG 

48 


TSBCATTN 

1A 

20 

TSBLNDCC 

22 


TSBTPOST 

48 


TSBCBRK 

1A 

40 

TSBLNNO 

28 


TSBTPQCB 

48 

40 

TSBCHDCC 

23 


TSBLNSZ 

8 


TSBTPUT 

18 

04 

TSBCIHBN 

1A 

80 

TSBLWAIT 

0 

40 

TSBTRMID 

68 


TSBCTCB 

3C 


TSBMINL 

54 


TSBVTAM 

19 

01 

TSBCTWX 

IB 

20 

TSBNBKSP 

18 

10 

TSBWOWIP 

4 

10 

TSBC1050 

IB 

01 

TSBNEWID 

48 

10 

TSBWTCB 

5 


TSBC2741 

1A 

08 

TSBNFLOP 

18 

01 

TSBWTJID 

20 


TSBC5041 

1A 

10 

TSBNIBF 

14 


TSBX 

0 


TSBDISC 

0 

04 

TSBNOBF 

C 


TSBXACTV 

20 

40 

TSBDSPLY 

0 

20 

TSBNOBRK 

18 

02 

TSBXA1ND 

46 


TSBECB 

1C 


TSBNOBUF 

0 

10 

TSBXASCI 

20 

80 

TSBEND 

78 


TSBOBFP 

D 


TSBXBCK 

4 


TSBERSDS 

38 


TSBOCAB 

29 

80 

TSBXCSAP 

3C 


TSBEXTNT 

60 


TSBOFLSH 

4 

40 

TSBXECB 

8 


TSBFLAGM 

4A 


TSBOTBFP 

9 


TSBXEND 

58 


TSBFLAGV 

4B 


TSBOWAIT 

29 

20 

TSBXFLG1 

20 


TSBFLG1 

4 


TSBOWIP 

4 

20 

TSBXFWD 

0 


TSBFLG2 

10 


TSBPOSTO 

48 

80 

TSBXLBUF 

40 


TSBFLG3 

18 


TSBPRI 

44 


TSBXLOGF 

20 

20 

TSB 








TSB 

LC28-1389-0 

(c) Copyright IBM 

Corp. 1980, 

1985 


Data Area Descriptions 

283 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


HEX HEX 

MHE _flEESil _ VALUE 


TSBXRPL 

4C 

TSBXSRB 

38 

TSBXSRBI 

34 

TSBXTERM 

48 


HEX HEX 

NAME _ OFFSET VALUE 

TSBXTIM 28 

TSBXTMBF 4A 

TSBXTMTP 48 

TSBXTOM 2C 


NAME 

HEX 

OFFSET 

HEX 

VALUE 

TSBXTVWA 

24 


TSBXUID 

18 


TSBXHREC 

20 

10 

TSB3270 

0 

02 


TSB 

284 


MVS/370 Debug Hdbk Vol 5 


TSB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


ISYI 


Common Name : TSO Vector Table 
Macro ID : IKJTSVT 
DSECT Name : TSVT 
Created by : IKJEFXSR 
Subpool and Key : 241 and key 0 

Size : 120 bytes 

Pointed to by s CVTTVT field of the CVT data area 
Serialization : None 

Function : Contains addresses of branch entered routines and control 
tables. 

OFFSET.?_ TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) 

STRUCTURE 

n 

TSVT 


0 

(0) 

CHARACTER 

4 

TSVTTSVT 

ACRONYM IN EBCDIC 'TSVT' 

4 

(4) 

CHARACTER 

1 

TSVTLEV 

TSVT VERSION 

5 

(5) 

CHARACTER 

3 

TSVTRSV1 

RESERVED 

8 

(8) 

ADDRESS 

4 

TSVTNCT 

ADDRESS OF THE MOST CURRENT NOTICE TABLE 

12 

(C) 

ADDRESS 

4 

TSVTVACC 

ADDRESS OF THE CL1ST VARIABLE ACCESS 
ROUTINE 

16 

(10) 

ADDRESS 

4 

TSVTASF 

ADDRESS OF THE AUTHORIZED SERVICE FACIL¬ 
ITY ROUTINE 

20 

(14) 

ADDRESS 

4 

TSVTRSV2 

RESERVED 

24 

(18) 

ADDRESS 

4 

TSVTRSV3 

RESERVED 

28 

(1C) 

ADDRESS 

4 

TSVTRSV4 

RESERVED 

32 

(20) 

ADDRESS 

4 

TSVTRSV5 

RESERVED 

36 

(24) 

ADDRESS 

4 

TSVTRSV6 

RESERVED 


TSVT 

LC28-1389-0 <c) Copyright IBM Corp. 1980, 1985 


TSVT 

Data Area Descriptions 285 
















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 



40 (28) ADDRESS 


4 TSVTRSV7 


RESERVED 


44 (20 ADDRESS 4 TSVTRSV8 RESERVED 


THE FOLLOWING DECLARATIONS DEFINE THE ENTRY AND RETURN CODES 
USED BY THE CLIST VARIABLE ACCESS ROUTINE (POINTED TO BY 
TSVSVACC). 

ENTRY CODES 


.1 TSVERETR "1" RETURN VARIABLE VALUE 

.1. TSVEUPDT "2" UPDATE VARIABLE 

.11 TSVELOC "3" LOCATE LOCATE NEXT 

.1.. TSVERSVD "4" RESERVED 


RETURN CODES 


1 • • 

• • • • 

TSVROK 

"0" EVERY THING OK 

► • • 

.1.. 

TSVRNORS 

"4” VARIABLE RETURNED SHOULDN'T BE 
RE-SCANNED 

> # • 

1... 

TSVREVAL 

”8” VARIABLE RETURNED REQUIRES EVALU¬ 
ATION 

• • • 

11.. 

TSVRLAB 

"12" VARIABLE RETURNED IS A LABEL 

.1 

• • • • 

TSVRNAUP 

"16" SYSTEM VARIABLE CAN'T BE UPDATED BY 
THE USER 

.1 

.1.. 

TSVRNOM 

"20'' FOR LOCATE NO VARIABLE RETURNED 
THERE ARE NO MORE VARIABLES 

1. 

• • • • 

TSVRGETF 

"32" GETMAIN/FREEMAIN FAILURE 

1. 

.1.. 

TSVRNSIZ 

"36” SYMBOL NAME TOO LARGE OR SMALL 

1. 

1... 

TSVRENV 

"40" INCORRECT ENVIRONMENT 

1. 

11.. 

TSVRPARM 

"44" INVALID ENTRY CODE 

11 

• • • • 

TSVRDUP 

"48" DUPLICATE SYMBOL FOUND 

11 

.1.. 

TSVRUNDF 

”52” UNDEFINED VARIABLE 

11 

1... 

TSVRGLER 

"56" TOO MANY GLOBAL VARIABLES 

11 

11.. 

TSVRUNDG 

"60" UNDEFINED GLOBAL VARIABLE 


TSVT 

286 


MVS/370 Debug Hdbk Vol 5 


TSVT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


I 






Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


III 


Common Name : Trace Table Entry 
Macro ID : None 
DSECT Name s None 

Created by : IEAVNIPO; moved byt IEAVNIPX; freed by* IEEVWAIT 
Subpool and Key : 245 and key 0 

Size : Each entry is 32 bytes 

Pointed to by J Trace table header (pointed to by FLCTRACE field of the PSA data 
area. 

X. Current entry - Pointed to by trace table header + 0 
x. First entry - Pointed to by trace table header + 4 
x. Last entry - Pointed to by trace table header + 8 
Serialization : None 

Function s The system trace table provides a record of events that have 
occurred. This trace table and its number of entries are an option that 
may be selected at system generation time. The following events cause 
entries in the system trace tablet SIO instruction; I/O interruption; 
program interruption; external interruption; each entry to the 
dispatcher; SVC interruption; SVC return;PC (program call); PT (program 
transfer); SSAR (set secondary ASID). x. NOTE - This is a mapping of 
the trace table entry; a macro is not available, x. The names defined 
are for mapping use only. 

QEFSETS _IXEI_ LENGTH NAME _ DESCRIPTION 


0 (0) STRUCTURE 0 TTE 


TRACE TABLE ENTRY TYPES 


2 


(2) BITSTRING 

1 

TYPE CODE (CONTAINED IN BITS 0, 1, 2, 
AND 3) 

• # f 1 • 

SIO 

"X f 00*" 

(0) 

SIO 

START INPUT/OUTPUT 

• ••X • • • • 

EXT 

n X*10 1n 

(1) 

EXT 

EXTERNAL INTERRUPT 

• • 1 • « . . • 

SVC 

"X*20 f " 

(2) 

SVC 

SVC INTERRUPT 

••XI •••• 

PGM 

"X'30 ,n 

(3) 

PGM 

PROGRAM INTERRUPT 

• 1 • • • • • • 

ISD 

"X*40*" 

(4) 

ISD 

INITIAL SRB DISPATCH 

.1.1 .... 

10 

"X*50 ,n 

(5) 

I/O 

INPUT/OUTPUT INTERRUPT 


TTE 

IC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


TTE 

Data Area Descriptions 287 














Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS 


LENGTH HAME 


DESCRIPTION 


"X»60 ,n (6) SSR SUSPENDED SRB REDISPATCH 
"X'70'" (7) DSP TASK DISPATCH 
"X»80'" (8) RET SVC RETURN 
"X'90*" (9) PC PROGRAM CALL 
"X'AO*" (A) PT PROGRAM TRANSFER 
"X*B0*" (B) SSAR SET SECONDARY ASID 


ENTRY TYPE 0 (SIO — START INPUT/OUTPUT) 


(0) BITSTRING 
(1) ADDRESS 


CONDITION CODE 
DEVICE ADDRESS 


(4) SIGNED 


CHANNEL ADDRESS WORD 


(8) CHARACTER 


CHANNEL STATUS WORD 


(10) SIGNED 


IOSB ADDRESS FROM IOS 


20 (14) BITSTRING 1 

21 (15) BITSTRING 1 

22 (16) BITSTRING 2 


INSTRUCTION LENGTH/CONDITION CODE/ PRO¬ 
GRAM MASK 

BITS 0-3 CONTAIN CHANNEL SET ID BITS 4-7 

CONTAIN PHYSICAL CPU ID 

ASID 


24 (18) SIGNED 
28 (1C) SIGNED 


TCB ADDRESS FROM SRB 

TIMER VALUE (BYTES 3-6 OF TOD CLOCK) 


ENTRY TYPE 1 (EXT — EXTERNAL INTERRUPT) 


EXTERNAL OLD PSW 
INTERRUPT CODE (BYTE 1) 
INTERRUPT CODE (BYTE 2) 
"X*80'« INTERNAL TIMER 
"X'40INTERRUPT KEY 


0 (0) CHARACTER 8 

2 (2) BITSTRING 1 

3 (3) BITSTRING 1 

1. INTTIMER 

.1. INTRPKEY 


TTE 

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TTE 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


I 




















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME 


1111 

• •to 

EXTRSGNL 

MALALERT 

.. .1 

EMERSGNL 

. .1. 

EXTRCALL 

. .11 

TODSYNCK 

.1.. 

CLKCOMPR 

.1.1 

CPUTIMER 


DESCRIPTION 

"X'3F»" EXTERNAL SIGNALS 
"X'OO'" MALFUNCTION ALERT (WITH INTER¬ 
RUPT CODE (BYTE 1) BIT 6 ON) 

"X'01*" EMERGENCY SIGNAL (WITH INTERRUPT 
CODE (BYTE 1) BIT 6 ON) 

”X*02' n EXTERNAL CALL (WITH INTERRUPT 
CODE (BYTE 1) BIT 6 ON) 

"X*03»" TOD SYNC CHK 
"X'04'« CLOCK COMPARATOR 
"X^S'" CPU TIMER 


8 

(8) SIGNED 

4 

FOR EMERGENCY SIGNAL, PCCAMESI. OTHER¬ 
WISE PSW S-BIT, PASID, AND SASID. 

12 

(C) SIGNED 

4 

FOR EMERGENCY SIGNAL, PCCAEMSP. FOR 
EXTERNAL CALL, PCCARPB. OTHERWISE REGIS¬ 
TER 0 CONTENTS 

16 

(10) SIGNED 

4 

FOR EMERGENCY SIGNAL, PCCAEMSE. FOR 
EXTERNAL CALL, PSASPAD. OTHERWISE REGIS¬ 
TER 1 CONTENTS 

20 

(14) BITSTRING 

1 

INSTRUCTION LENGTH/CONDITION CODE/ PRO¬ 
GRAM MASK 

21 

(15) BITSTRING 

1 

CPU ID (PHYSICAL ADDRESS) 

22 

(16) BITSTRING 

2 

ASID 

24 

(18) SIGNED 

4 

CURRENT OR TQE TCB ADDRESS 

28 

(1C) SIGNED 

4 

TIMER VALUE (BYTES 3-6 OF TOD CLOCK) 

ENTRY 

TYPE 2 (SVC — SVC 

INTERRUPT) 



0 

(0) FLOATING 

8 

SVC OLD PSW 

8 

(8) SIGNED 

4 

REGISTER 15 CONTENTS 


TTE 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


TTE 

Data Area Descriptions 289 















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


12 

(C) SIGNED 

4 

REGISTER 0 CONTENTS 

16 

(10) SIGNED 

4 

REGISTER 1 CONTENTS 

20 

(14) BITSTRING 

1 

INSTRUCTION LENGTH/CONDITION CODE/ PRO¬ 
GRAM MASK 

21 

(15) BITSTRING 

1 

CPU ID (PHYSICAL ADDRESS) 

22 

(16) BITSTRING 

2 

ASID 

29 

(18) SIGNED 

4 

CURRENT TCB ADDRESS 

28 

(1C) SIGNED 

4 

TIMER VALUE (BYTES 3-6 OF TOD CLOCK) 

ENTRY 

TYPE 2 (SVC — SVC 

ERROR) 



0 

(0) FLOATING 

8 

SVC OLD PSW, ADDRESS PORTION 
=X'FFFFFFFF f 

8 

(8) BITSTRING 

2 

PSW S-BIT (BIT 0), PASID (BITS 1-15) 

10 

(A) BITSTRING 

2 

SASID 

12 

(C) SIGNED 

4 

PSAHLHI CONTENTS, HIGHEST LOCK HELD 
INDICATOR 

16 

(10) SIGNED 

4 

PSAMODEW CONTENTS, SYSTEM MODE MORD 

20 

(14) BITSTRING 

1 

INSTRUCTION LENGTH/CONDITION CODE/ PRO¬ 
GRAM MASK 

21 

(15) BITSTRING 

1 

CPU ID (PHYSICAL ADDRESS) 

22 

(16) BITSTRING 

2 

ASID 

24 

(18) SIGNED 

4 

CURRENT TCB ADDRESS 

28 

(1C) SIGNED 

4 

TIMER VALUE (BYTES 3-6 OF TOD CLOCK) 


TTE 

290 


MVS/370 Debug Hdbk Vol 5 


TTE 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


P-EFSEIS_ TYPE LENGTH NAME _ DESCRIPTION 


ENTRY 

TYPE 3 (PGM -- PROGRAM 

INTERRUPT) 



0 

(0) FLOATING 

8 


PROGRAM INTERRUPT OLD PSM 

8 

(8) BITSTRING 

2 


PSW S-BIT (BIT 0), PASID (BITS 1-15) 

10 

(A) BITSTRING 

2 


SASID 

12 

(C) SIGNED 

4 


TRANSLATION EXECPTION ADDRESS 

16 

(10) SIGNED 

4 


REGISTER 1 CONTENTS 

20 

(14) BITSTRING 

1 


INSTRUCTION LENGTH/CONDITION CODE/ PRO¬ 
GRAM MASK 

21 

(15) BITSTRING 

1 


CPU ID (PHYSICAL ADDRESS) 

22 

(16) BITSTRING 

2 


ASID 

24 

(18) SIGNED 

4 


CURRENT TCB ADDRESS 

28 

(1C) SIGNED 

4 


TIMER VALUE (BYTES 3-6 OF TOD CLOCK) 

ENTRY 

TYPE 4 (ISD -- INITIAL 

SRB DISPATCH) 



0 

(0) FLOATING 

8 


NEN PSM 

8 

(8) BITSTRING 

2 


ZERO 

10 

(A) BITSTRING 

2 


PURGE ASID 

12 

(C) SIGNED 

4 


REGISTER 0 CONTENTS (SRB ADDRESS) 

16 

(10) SIGNED 

4 


REGISTER 1 CONTENTS (PARAMETER LIST 
ADDRESS) 

20 

(14) BITSTRING 

1 


ZERO 


TTE TTE 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 Data Area Descriptions 291 



















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


21 

(15) BITSTRING 

1 

CPU ID (PHYSICAL ADDRESS) 

22 

(16) BITSTRING 

2 

CURRENT ASID 

24 

(18) SIGNED 

4 

PURGE TCB ADDRESS 

28 

(1C) SIGNED 

4 

TIMER VALUE (BYTES 3-6 OF TOD CLOCK) 

ENTRY 

TYPE 5 (I/O — INPUT/OUTPUT 

INTERRUPT) 


0 

(0) FLOATING 

8 

I/O OLD PSW 

8 

(8) FLOATING 

8 

CHANNEL STATUS WORD 

16 

(10) SIGNED 

4 

RESERVED 

20 

(14) BITSTRING 

1 

INSTRUCTION LENGTH/CONDITION CODE/ PRO¬ 
GRAM MASK 

21 

(15) BITSTRING 

1 

BITS 0-3 CONTAIN CHANNEL SET ID THIS 
FIELD IS ZERO UNLESS CHANNEL SET SWITCH¬ 
ING IS INSTALLED BITS 4-7 PHYSICAL CPU 

ID 

22 

(16) BITSTRING 

2 

ASID 

24 

(18) SIGNED 

4 

CURRENT TCB ADDRESS 

28 

(1C) SIGNED 

4 

TIMER VALUE (BYTES 3-6 OF TOD CLOCK) 

ENTRY 

TYPE 6 (SSR — SUSPENDED SRB 

REDISPATCH) 


0 

(0) FLOATING 

8 

NEW PSW 

8 

(8) BITSTRING 

2 

PSW S-BIT (BIT 0), PASID (BITS 1-15) 

10 

(A) BITSTRING 

2 

SASID 


TTE 

292 MVS/370 Debug Hdbk Vol 5 


TTE 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 



















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS_Effig_ LENGTH NAME _ DESCRIPTION 


12 

(C) BITSTRING 

2 

ZERO 

14 

(E) BITSTRING 

2 

PURGE ASID 


16 

(10) SIGNED 

4 

REGISTER 1 CONTENTS 


20 

(14) BITSTRING 

1 

INSTRUCTION LENGTH/CONDITION 
GRAM MASK 

CODE/ PRO- 

21 

(15) BITSTRING 

1 

CPU ID (PHYSICAL ADDRESS) 


22 

(16) BITSTRING 

2 

CURRENT ASID 


24 

(18) SIGNED 

4 

PURGE TCB ADDRESS 


28 

(1C) SIGNED 

4 

TIMER VALUE (BYTES 3-6 OF TOD 

CLOCK) 

ENTRY 

TYPE 7 (DSP -- TASK 

DISPATCH) 




0 

(0) FLOATING 

8 

NEW PSW 


8 

(8) BITSTRING 

2 

PSW S-BIT (BIT 0), PASID (BITS 1-15) 

10 

(A) BITSTRING 

2 

SASID 


12 

(C) SIGNED 

4 

REGISTER 0 CONTENTS (NEW) 


16 

(10) SIGNED 

4 

REGISTER 1 CONTENTS (NEW) 


20 

(14) BITSTRING 

1 

INSTRUCTION LENGTH/CONDITION 
GRAM MASK 

CODE/ PRO- 

21 

(15) BITSTRING 

1 

CPU ID (PHYSICAL ADDRESS) 


22 

(16) BITSTRING 

2 

ASID 


24 

(18) SIGNED 

4 

NEW TCB ADDRESS 


28 

(1C) SIGNED 

4 

TIMER VALUE (BYTES 3-6 OF TOD 

CLOCK) 

ENTRY 

TYPE 8 (RET — SVC 1 

RETURN) 




TTE 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


TTE 

Data Area Descriptions 293 
























Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) FLOATING 

8 

NEW PSW 

8 

(8) SIGNED 

4 

REGISTER 15 CONTENTS (NEW) 

12 

(C) SIGNED 

4 

REGISTER 0 CONTENTS (NEW) 

16 

(10) SIGNED 

4 

REGISTER 1 CONTENTS (NEW) 

20 

(14) BITSTRING 

1 

INSTRUCTION LENGTH/CONDITION CODE/ PRO¬ 
GRAM MASK 

21 

(15) BITSTRING 

1 

CPU ID (PHYSICAL ADDRESS) 

22 

(16) BITSTRING 

2 

ASID 

24 

(18) SIGNED 

4 

NEW TCB ADDRESS 

28 

(1C) SIGNED 

4 

TIMER VALUE (BYTES 3-6 OF TOD CLOCK) 

ENTRY 

TYPE 9 (PC — PROGRAM CALL) 



0 

(0) 

FLOATING 

8 

NEW PSW 

8 

(8) 

SIGNED 

2 

NEW PASID 

10 

(A) 

SIGNED 

2 

NEW SASID 

12 

(C) 

SIGNED 

4 

REGISTER 14 CONTENTS (NEW) 

16 

(10) 

SIGNED 

4 

0 

20 

(14) 

BITSTRING 

1 

INSTRUCTION LENGTH/CONDITION CODE/ PRO¬ 
GRAM MASK 

21 

(15) 

BITSTRING 

1 

CPU ID (PHYSICAL ADDRESS) 

22 

(16) 

BITSTRING 

2 

ZERO 

24 

(18) 

SIGNED 

4 

PC NUMBER 

28 

(io 

SIGNED 

4 

TIMER VALUE (BYTES 3-6 OF TOD CLOCK) 


TTE 

294 


MVS/370 Debug Hdbk Vol 5 


TTE 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 





















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFESEXS_ TYPE LENGTH NAME _ DESCRIPTION 


ENTRY 

TYPE A (PT — PROGRAM TRANSFER) 



0 

(0) FLOATING 

8 

NEW PSW 

8 

(8) SIGNED 

2 

NEW PASID 

10 

(A) BITSTRING 

2 

ZERO 

12 

(C) SIGNED 

2 

OLD PASID 

14 

(E) BITSTRING 

6 

ZERO 

20 

(14) BITSTRING 

1 

INSTRUCTION LENGTH/CONDITION CODE/ PRO¬ 
GRAM MASK 

21 

(15) BITSTRING 

1 

CPU ID (PHYSICAL ADDRESS) 

22 

(16) BITSTRING 

6 

ZERO 

28 

(1C) SIGNED 

4 

TIMER VALUE (BYTES 3-6 OF TOD CLOCK) 

ENTRY 

TYPE B (SSAR - SET 

SECONDARY ASID) 



0 

(0) 

FLOATING 

8 

NEW PSW 

8 

(8) 

SIGNED 

2 

PASID 

10 

(A) 

SIGNED 

2 

NEW SASID 

12 

(C) 

BITSTRING 

2 

ZERO 

14 

(E) 

SIGNED 

2 

OLD SASID 

16 

(10) 

BITSTRING 

4 

ZERO 

20 

(14) 

BITSTRING 

1 

INSTRUCTION LENGTH/CONDITION CODE/ PRO¬ 
GRAM MASK 

21 

(15) 

BITSTRING 

1 

CPU ID (PHYSICAL ADDRESS) 

22 

(16) 

BITSTRING 

6 

ZERO 




TTE 

LC28-1389-0 Cc) Copyright IBM Corp. 1980, 1985 


TTE 

Data Area Descriptions 295 










Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS 


LENGTH NAME 


DESCRIPTIOh 


28 (1C) SIGNED 4 


TIMER VALUE (BYTES 3-6 OF TOD CLOCK) 


TTE 

296 


MVS/370 Debug Hdbk Vol 5 


TTE 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


CROSS REFERENCE 


NAME 

HEX 

OFFSET 

HEX 

VALUE 

NAME 

HEX 

OFFSET 

HEX 

VALUE 

NAME 

HEX 

OFFSET 

HEX 

VALUE 

CLKCOMPR 

3 

04 

INTTIMER 

3 

80 

RET 

2 

80 

CPUTIMER 

3 

05 

10 

2 

50 

SIO 

2 

00 

DSP 

2 

70 

ISD 

2 

40 

SSAR 

2 

B0 

EMERSGNL 

3 

01 

MALALERT 

3 

00 

SSR 

2 

60 

EXT 

2 

10 

PC 

2 

90 

SVC 

2 

20 

EXTRCALL 

3 

02 

PGM 

2 

30 

TODSYNCK 

3 

03 

EXTRSGNL 

3 

3F 

PT 

2 

A0 

TTE 

0 


INTRPKEY 

3 

40 








TTE 

LC28-1389-0 Cc) Copyright IBM Corp. 1980, 1985 


TTE 

Data Area Descriptions 297 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


TVCS 


Common Name : TSO/VTAM CSA Area 
Macro ID : IKTTVCS 
DSECT Name : TVCS 

Created by : VTIOC routine, IKTASTPT 

Subpool and Key : 231 and key 6 

Size : 20 bytes + value in TVCSDASZ 

Pointed to by : TSBXCSAP field of the TSBX data area 

Serialization : None 

Function : The TVCS is used to move output data and edit options 
from an address space that issues a TPUT with ASID to the 
target address space. 

O EES EIS_ TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) STRUCTURE 

116 

TVCS 

TSO/VTAM CSA AREA FOR ASID TPUT'S 

0 

(0) UNSIGNED 

72 

TVCSAVEA 

SAVEAREA FOR IKTXMTPT 

72 

(48) SIGNED 

4 

TVCSPARM 

PARAMETER ADDRESS 

76 

(40 CHARACTER 

20 

TVCS0PRM 

OPARMS AREA 

96 

(60) SIGNED 

4 

TVCSECB 

USED FOR XMPOST 


1 • * • •••• 


TVCSWAIT 

WAIT BIT 


.1*. .... 

..11 1111 


TVCSP0ST 

POST BIT 

97 

(61) ADDRESS 

3 

TVCSC0DE 

ECB POST CODE 

100 

(64) SIGNED 

2 

TVCSDASZ 

USER DATA SIZE 

102 

(66) SIGNED 

2 

TVCSGMSZ 

GETMAIN SIZE 

104 

(68) UNSIGNED 

1 

TVCS0PTN 

TPUT OPTIONS 


1 • • • • • • « 


TVCSPTGT 

TPUT =0, TGET=1 


• 1 < • •••• 



RESERVED 


• * 1 » •••• 


TVCSPRI0 

HIGHP=0, L0WP=1 


• ••1 • * • » 


TVCSN0WT 

WAIT =0, N0WAIT=1 


• * * • 1 • • * 


TVCSH0LD 

NQH0LD=0, H0LD=1 


• ••• • 1 * « 


TVCSBRK 

NOBREAK=0, BREAK =1 


TVCS TVCS 

298 MVS/370 Debug Hdbk Vol 5 LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 














Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 



.11 


TVCSEDIT 

EDIT=00,ASID=01,CNTL=10, FULLSCRN=11 

105 

(69) ADDRESS 

3 

TVCSSRBA 

POINTER TO SRB IN CSA 

108 

(60 ADDRESS 

4 

TVCSASCB 

SOURCE ASCB ADDRESS 

112 

(70) SIGNED 

4 

TVCSINDS 

HAND SHAKING INDICATORS BETWEEN ADDRESS 
SPACES 


1.». ». « « 


TVCSRCRC 

SOURCE ADDRESS SPACE RELINQUISHES CON¬ 
TROL OF CSA AREAS 


. 1. . • •«• 


TVCSTGRC 

TARGET ADDRESS SPACE RELINQUISHES CON¬ 
TROL OF CSA AREAS 


..11 1111 

1111 1111 

1111 1111 

1111 1111 




116 

(74) CHARACTER 

0 

TVCSDATA 

START OF TPUT DATA AREA 


TVCS 

LC28-1389-0 (c) Copyright IBM Corp 


1980, 1985 


Data Area Descriptions 


TVCS 

299 




Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


TVWA 


Common Name : TSO/VTAM Work Area 
Macro ID : IKTTVWA 
DSECT Name : TVWA 

Created by : VTIOC routine, IKTXINIT 
Subpool and Key : 229 and key 6 

Size : 216 bytes 

pointed to by : TSBXTVWA field of the TSBX data area 
Serialization : LOCAL lock 

Function : The TVWA provides control information, control block 
pointers, and work area pointers for TSO/VTAM time sharing. 

OFFSETS_HEi_ L E NGT H NAME _ description 


0 

CO) STRUCTURE 

248 

TVWA 


0 

(0) CHARACTER 

8 

TVWAPPL 

TS0 USER APPLID 

8 

(8) ADDRESS 

4 

TVWATIMW 

PTR TO TIM WORK AREA AND PARM LIST 

12 

(C) ADDRESS 

4 

TVWATOMW 

POINTER TO TOM WORK AREA 

16 

(10) ADDRESS 

4 

TVWALLWA 

POINTER TO WORK AREA FOR LOCALLY LOCKED 
ROUTINES 

20 

(14) ADDRESS 

4 

TVWAQMWA 

ACWORK AREA FOR QUEUE MANAGER AND 
IKTVTGTF) 

24 

(18) ADDRESS 

4 

TVWABIQ 

ACBEGINNING OF INPUT QUEUE) 

28 

(1C) ADDRESS 

4 

TVWANIM 

A(NEXT INPUT MESSAGE) 

32 

(20) ADDRESS 

4 

TVWAElQ 

A(END OF INPUT QUEUE) 

36 

(24) ADDRESS 

4 

TVWABOQ 

ACBEGINNING OF OUTPUT QUEUE) 

40 

(28) ADDRESS 

4 

TVWANOM 

ACNEXT OUTPUT MESSAGE) 


TVWA 

300 MVS/370 Deb&g Hdbk Vol 5 


TVWA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 














Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


44 

(20 ADDRESS 

4 

TVWAEOQ 

A(END OF OUTPUT QUEUE) 

48 

(30) CHARACTER 

4 

TVWACPID 

CELL POOL IDENTIFIER 

52 

(34) ADDRESS 

4 


RESERVED 

56 

(38) SIGNED 

4 

TVWAUSMN 

AMOUNT OF USED MAIN STORAGE USED FOR 
TPUTS 

60 

(30 ADDRESS 

4 

TVWATCB 

A(TASK CONTROL BLOCK) 

PARMLIB VALUES FIXED PER 

SESSION 



64 

(40) SIGNED 

4 

TVWAHBUF 

HIGH BUFFER THRESHOLD 

68 

(44) SIGNED 

4 

TVWALBUF 

LOW BUFFER THRESHOLD 

72 

(48) SIGNED 

2 

TVWACLSZ 

CELL POOL CELL SIZE 

74 

(4A) SIGNED 

2 

TVMACHNL 

MAXIMUM NUMBER OF RU'S IN CHAIN 

END OF 

PARMLIB VALUES 





76 

(40 ADDRESS 

4 

TVWAFRWI 

A(INPUT MANAGER FRR WORK AREA) 

80 

(50) ADDRESS 

4 

TVWAFRWO 

A(OUTPUT MANAGWR FRR WORK AREA) 

84 

(54) ADDRESS 

4 

TVWAACB 

A(ACB) 

88 

(58) ADDRESS 

4 

TVHANIB 

A(NIB) 

92 

(50 ADDRESS 

4 

TVWARPL 

A(RPL) 

96 

(60) ADDRESS 

4 

TVWAEXL 

A(EXLST) 


TVWA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


TVWA 

Data Area Descriptions 301 


















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 

OFFSETS_ TYPE LENGTH NAME _ DESCRIPTION 


100 

(64) ADDRESS 

4 

TVWAVST 

A(VARIABLE STORAGE AREA) 

104 

(68) SIGNED 

4 

TVWAVSZ 

NUMBER OF BYTES IN THE VARIABLE STORAGE 
AREA 

108 

(60 CHARACTER 

12 

TVWADLST 

INIT ROUTINE LIST 

108 

(60 ADDRESS 

4 

TVWADIN1 

ADDR 3270 INIT PROC 

112 

(70) ADDRESS 

4 

TVWADIN2 

ADDR 3767/3770 INIT PROC 

116 

(74) ADDRESS 

4 

TVWADIN3 

ADDR USER EXIT FOR INIT 

120 

(78) ADDRESS 

4 

TVWATGTF 

A(GTF TRACE DATA) 

124 

(70 ADDRESS 

28 


RESERVED 

152 

(98) SIGNED 

4 

TVWAECB 

TERMINAL CONTROL ECB 

156 

(90 SIGNED 

4 

TVWATECB 

TIMER ECB 

160 

(AO) CHARACTER 

12 

TVWAECBL 

RECONNECT ECB LIST 

160 

(AO) ADDRESS 

4 

TVWAECB1 

A(CANCEL ECB) = A(CHCECB) 

164 

(A4) ADDRESS 

4 

TVWAECB2 

A(RECONNECT ECB) = A(TSBXECB) 

168 

(A8) ADDRESS 

4 

TVWAECB3 

A(TIMER ECB) = A(TVWAECB) 

172 

(AC) ADDRESS 

4 

TVWATABI 

AdNBOUND TRANSLATE TABLE) 

176 

(BO) ADDRESS 

4 

TVWATABO 

A(OUTBOUND TRANSLATE TABLE) 

180 

(B4) ADDRESS 

4 

TVWAATBI 

AdNBOUND ASCII XLATE TABLE) 

184 

(B8) ADDRESS 

4 

TVWAATBO 

A(OUTBOUND ASCII XLATE TABLE) 

188 

(BC) CHARACTER 

8 

TVWATRNM 

NAME OF USER TRANSLATE TABLE LIBRARY 
MEMBER 


TVWA 

302 


MVS/370 Debug Hdbk Vol 5 


TVWA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 






















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS 



■Sana 


DESCRIPTIO 


(C4) SIGNED 2 TVWALNSV LINE COUNT SAVE AREA 

(C6) SIGNED 2 TVWALNCT CURRENT SCREEN LINE COUNT 


200 (C8) SIGNED 2 TVWAWLNO NUMBER OF LINES AVAILABLE FOR USE ON 

SCREEN 

202 (CA) SIGNED 2 TVWAWLSZ NUMBER OF CHARACTERS PER LINE AVAILABLE 

FOR USE ON SCREEN 


204 (CC) CHARACTER 1 TVWARSHW 

205 (CD) CHARACTER 7 


RESHOW CODE BYTE FOR FULL SCREEN APPLI¬ 
CATION 
RESERVED 



(D4) SIGNED 2 TVWAATTN ATTENTION WITH STAX COUNT 

(D6) SIGNED 2 TVWARMAX MAXIMUM RU SIZE FOR TERMINAL 


216 (D8) SIGNED 2 TVWARTR RETRY COUNTER 

218 (DA) SIGNED 2 TVWANCNT COLUMN COUNT OF EXPECTED INPUT 


220 (DC) SIGNED 4 RESERVED 

224 (EO) CHARACTER 8 TVWAUSRA AREA FOR INSTALLATION DATA 

232 (E8) CHARACTER 16 TVWAFLAG FLAG BYTE AREA 

232 (E8) CHARACTER 1 TVWAFLGO RESERVED 

233 (E9) CHARACTER 1 TVWAFLG1 FLAG BYTE 

1. TVWATOD TOM HAS FREED WORK AREA AND EXITED NOR¬ 

MALLY 

.1. TVWATIS TOM IS SCHEDULED 

..1. TVWATAS TOM NOT AVAILABLE FOR SCHEDULING 

...1 _ TVWATID TIM HAS FREED WORK AREA AND EXITED NOR¬ 

MALLY 

_ 1... TVWAXSCD EXAMINE WORKING SCR DIMENS 

.1.. TVWAILE IGNORE LOSTTERM ENTRY BECAUSE LOSTERM 

ALREADY ENTERED 

.1. TVWALTE LOSTERM ENTERED 

.1 TVWAOOPS OUT OF PAPER INDICATOR 

234 (EA) CHARACTER 1 TVWAFLG2 FLAG BYTE 

1. TVWAENDS USER SESSION ENDED 

.1. TVWAPGN 3270 SCREEN PAGING 

..1. RESERVED 


TVWA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


TVWA 

Data Area Descriptions 303 







Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 




RESERVED 

INPUT DATA LOST ERROR MESSAGE REQUIRED 
NEW LINE SHOULD BE SENT TO THE TERMINAL 
CARRIAGE RETURN SHOULD BE SENT TO THE 
TERMINAL 

BREAKIN REQUEST ON OUTPUT QUEUE 
FLAG BYTE 

TOM SENT SIGNAL FOR TPUT-BREAKIN 
DIRECTION IS REQUIRED BY TIM, BUT IS NOT 
AVAILABLE 
ATTENTION IGNORED 

QUEUE MANAGER RETRYING ABENDED REQUEST 
WHICH QUEUE SERVICE 0-IN,1-OUT 
RESERVED 

TRANSLATE TABLE IN USE 
DEFAULT TRANSLATE TABLES IN USE 

FLAG BYTE 

FORMAT 3270 SCREEN 
DATA ON OUTPUT QUEUE 
RESERVED 

NO FLASH BACK. LAST OUTPUT HAD BYPASS 
SET 

RESERVED 

FOOTPRINT FOR QUEUE ELEMENT VERIFICATION 
ROUTINE 

RECEIVE RESPONSES 
RESERVED 
FLAG BYTE 
RESERVED 

DISPLAY IN FULL SCREEN MODE 
RESERVED 

FULL SCR TPUT WAITING 
TOM IS RUNNING 

NO FULL SCREEN 'PAGING' AFTER 
NON-FULLSCREEN TPUT 
PROMPTING IS IN EFFECT 
FIRST PROMPT 
FLAG BYTE 

IWAIT SYSEVENT ISSUES 
I/O TRANSACTION 1=IN,0=0UT 


TVWA 

304 


MVS/370 Debtig Hdbk Vol 5 


TVWA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 









Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


0 E E SH 3_I3CEI _ LENGTH NAME _ DESCRIPTION 



• • X « * • • • 



RESERVED 





TVWARCDT 

TIM HAS READ BUFFER CONTENTS 



It** 1 • • • 


TVWAFMEW 

SENT FORMATTING ERASE-WRT 



• ••• • 1 « « 



RESERVED 



• ••« • • X • 


TVWALTS 

ALTERNATE SCREEN SIZE IN USE 



• ••« • • • 1 


TVWASCSW 

SCREEN SWITCHED BY CLEAR 


239 

(EF) CHARACTER 

1 

TVWAFLG7 

FLAG BYTE 



1*** 


TVWABKPG 

BREAK-IN PAGING 



• X • • • »« • 


TVWATGET 

TGET IS PENDING 



• • 1« 


TVWARDBF 

TOM ISSUED READ BUFFER 



•••X •••• 



RESERVED 



_ 1... 


TVWARISW 

I/O MGRS REINITIALIZED 



.1.. 



RESERVED 



.1. 



RESERVED 



. 1 


TVWAFRRR 

IKTIOFRR IS RECURSING 


240 

CFO) CHARACTER 

1 

TVWAFLG8 

STATE INDICATORS 



11 . 


TVWABRKT 

BRACKET STATE 



*•11 ••«• 


TVWADIRS 

DIRECTION STATE 



_ 11.. 


TVWAKEYB 

KEYBOARD STATE APPLICABLE ONLY 
DEVICES 

TO 3270 


•••• 1**« 


TVWAKEYL 

KEYBOARD IS LOGICALLY OPEN FOR 

INPUT 


•••• *1*« 


TVWAKEYP 

KEYBOARD IS PHYSICALLY OPEN FOR INPUT 


•••• •• 11 



RESERVED 


241 

(FI) CHARACTER 

1 

TVNAFLG9 

RESERVED 


242 

(F2) CHARACTER 

1 

TVWAFLGA 

RESERVED 


243 

(F3) CHARACTER 

1 

TVWAFLGB 

RESERVED 


244 

(F4) CHARACTER 

1 

TVWAFLGC 

RESERVED 


245 

CF5) CHARACTER 

1 

TVWAFLGD 

RESERVED 


246 

CF6) CHARACTER 

1 

TVWAFLGE 

RESERVED 


247 

CF7) CHARACTER 

1 

TVWAFLGF 

RESERVED 


248 

CF8) CHARACTER 

0 

TVWAEND 

END OF TSO/VTAM WORK AREA 



TVWA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


TVWA 

Data Area Descriptions 305 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 

CROSS REFERENCE 

HEX HEX HEX HEX HEX HEX 


NAME 

OFFSET 

VALUE 

NAME 

OFFSET VALUE 

NAME 

OFFSET VALUE 

TVWA 

0 


TVWAFLG0 

E8 


TVWAPRMT 

ED 

02 

TVWAACB 

54 


TVWAFLG1 

E9 


TVWAP1ST 

ED 

01 

TVWAAIGN 

EB 

20 

TVWAFLG2 

EA 


TVWAQMEV 

EC 

04 

TVWAATBI 

B4 


TVWAFLG3 

EB 


TVWAQMIO 

EB 

08 

TVWAATBO 

B8 


TVWAFLG4 

EC 


TVWAQMRT 

EB 

10 

TVWAATTN 

D4 


TVWAFLG5 

ED 


TVWAQMWA 

14 


TVWABIQ 

18 


TVWAFLG6 

EE 


TVWARCDT 

EE 

10 

TVWABIR 

EA 

01 

TVWAFLG7 

EF 


TVWARCRS 

EC 

02 

TVHABKPG 

EF 

80 

TVWAFLG8 

FO 


TVWARDBF 

EF 

20 

TVWABOQ 

24 


TVWAFLG9 

FI 


TVWARISW 

EF 

08 

TVWABRIN 

EB 

80 

TVWAFMEW 

EE 

08 

TVWARMAX 

D6 


TVWABRKT 

F0 

CO 

TVWAFMSC 

EC 

80 

TVWARPL 

5C 


TVNACHNL 

4A 


TVWAFRRR 

EF 

01 

TVWARSHW 

CC 


TVWACLSZ 

48 


TVWAFRWI 

4C 


TVWARTR 

D8 


TVWACPID 

30 


TVWAFRWO 

50 


TVWASCSW 

EE 

01 

TVWACRRQ 

EA 

02 

TVWAFSM 

ED 

40 

TVWASDSG 

EB 

40 

TVWADIN1 

6C 


TVWAFSW 

ED 

10 

TVWATABI 

AC 


TVWADIN2 

70 


TVWAHBUF 

40 


TVWATABO 

BO 


TVNADIN3 

74 


TVWAILE 

E9 

04 

TVWATAS 

E9 

20 

TVWADIRS 

F0 

30 

TVWAIOTR 

EE 

40 

TVWATCB 

3C 


TVWADLST 

6C 


TVNAISYS 

EE 

80 

TVWATECB 

9C 


TVHADOOQ 

EC 

40 

TVWAKEYB 

FO 

OC 

TVWATGET 

EF 

40 

TVWAECB 

98 


TVWAKEYL 

FO 

08 

TVWATGTF 

78 


TVWAECBL 

A0 


TVWAKEYP 

FO 

04 

TVWATID 

E9 

10 

TVWAECB1 

A0 


TVWALBUF 

44 


TVWATIMH 

8 


TVWAECB2 

A4 


TVWALLWA 

10 


TVWATIR 

ED 

08 

TVWAECB3 

A8 


TVWALNCT 

C6 


TVWATIS 

E9 

40 

TVWAEIQ 

20 


TVWALNSV 

C4 


TVWATOD 

E9 

80 

TVWAEND 

F8 


TVWALTE 

E9 

02 

TVWATOMW 

C 


TVWAENDS 

EA 

80 

TVWALTS 

EE 

02 

TVWATRAN 

EB 

02 

TVWAEOQ 

2C 


TVWANCNT 

DA 


TVWATRDF 

EB 

01 

TVWAERMG 

EA 

08 

TVWANFSP 

ED 

04 

TVWATRNM 

BC 


TVWAEXL 

60 


TVWANIB 

58 


TVWAUSMN 

38 


TVWAFLAG 

E8 


TVWANIM 

1C 


TVWAUSRA 

EO 


TVWAFLGA 

F2 


TVWANLRQ 

EA 

04 

TVWAVST 

64 


TVWAFLGB 

F3 


TVWANOFB 

EC 

10 

TVWAVSZ 

68 


TVWAFLGC 

F4 


TVWANOM 

28 


TVWAWLNO 

C8 


TVWAFLGD 

F5 


TVWAOOPS 

E9 

01 

TVWAWLSZ 

CA 


TVWAFLGE 

F6 


TVWAPGN 

EA 

40 

TVWAXSCD 

E9 

08 

TVWAFLGF 

F7 


TVWAPPL 

0 






TVWA 

306 


MVS/370 Debug Hdbk Vol 5 


LC28-1389-0 (c) Copyright IBM Corp. 1980, 


TVWA 

1985 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


twar 


Common Name : TCAS Work Area 

Macro ID : IKTCASNA 

DSECT Name : TWAR 

Created by : TCAS routine IKTCAS51 

Subpool and Key : Subpool 0 and key 6 

Size : 528 bytes 

Pointed to by : TCASMA field of the TCAST data area 
Serialization : LOCAL lock 

Function J The TWAR provides data storage for TCAS intei—task 
communication and diagnostic recording for TCAS error analysis. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) 

STRUCTURE 

536 

TWAR 

TCAS WORK AREA 

0 

(0) 

UNSIGNED 

2 

TWACOMP 

TCAS COMPLETION CODE 

2 

(2) 

UNSIGNED 

2 

TWARSON 

TCAS TERMINATION REASON CODE 

4 

(4) 

ADDRESS 

4 

TWASYNQH 

SYNCHRONOUS QUEUE HEADER 

8 

(8) 

ADDRESS 

4 

TWAPASQH 

PENDING ADDRESS SPACE Q HEADER 

12 

(C) 

ADDRESS 

4 

TWAASCB 

ASCB POINTER 

16 

(10) 

ADDRESS 

4 

TWACSCB 

CSCB POINTER 

20 

(14) 

ADDRESS 

4 

TWATCAST 

TCAST POINTER 

24 

(18) 

ADDRESS 

4 

TWAINIT 

TCAS INITIALIZATION RTN POINTER 

28 

(1C) 

ADDRESS 

4 

TWATTSR 

TCAS TERMINATION ROUTINE POINTER 

32 

(20) 

ADDRESS 

4 

TWATCSR 

TCAS CREATE ROUTINE POINTER 

36 

(24) 

ADDRESS 

4 

TWAPPSR 

PARAM PROCESS ROUTINE POINTER 

40 

(28) 

ADDRESS 

4 

TWAEESR 

ESTAE EXIT ROUTINE POINTER 


TWAR 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


TWAR 

Data Area Descriptions 307 












Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS _ HEi _ LENGTH NAME _ DESCRIPTION 


44 

(20 

ADDRESS 

4 

TWADEQAS 

ADDRESS OF DEQ ROUTINE 

48 

(30) 

ADDRESS 

4 

TWAMSG 

ADDRESS OF MESSAGE BLOCK 

52 

(34) 

ADDRESS 

4 

TWAVTCB 

VTAM INT SUBTASK TCB POINTER 

56 

(38) 

ADDRESS 

4 

TWAUTCB 

USER INT SUBTASK TCB POINTER 

60 

(30 

ADDRESS 

4 

TWACTCB 

CON COMM SUBTASK TCB POINTER 

64 

(40) 

BITSTRING 

4 

TWAMECB 

MAINLINE ECB 

68 

(44) 

BITSTRING 

4 

TWAVCOMP 

VTAM INT COMPLETION CODE 

72 

(48) 

BITSTRING 

4 

TWAUCOMP 

USER INT COMPLETION CODE 

76 

(40 

BITSTRING 

4 

TWACCOMP 

CONSOLE COMM COMPLETION CODE 

80 

(50) 

1 ... 

BITSTRING 

1 * • • « 

1 

TWAMFL 

TWAMFL1 

MAIN TASK FLAG BYTE 

TCAS TERMINATION ROUTINE 

BYPASS 

INDICATOR 






.111 1111 



RESERVED 

81 

(51) BITSTRING 

i 

TWAVFL 

VTAM INTERFACE SUBTASK FLAG 


li»* •••• 


TWAVFL1 

VTAM INTERFACE SUBTASK ATTACHED 


• 1 • • •••• 


TWAVFL2 

VTAM INTERFACE SUBTASK ABEND 


••X* •••• 


TWAVFL3 

POST USER INTERFACE SUBTASK 


...1 _ 


TWAVFL4 

ESTAE EXIT COMPLETE 


• • • • lit* 


TWAVFL5 

OPEN ACB ISSUED 


• ••• lit! 


TWAVFL6 

START LOGON ISSUED 


.11 



RESERVED 

82 

(52) BITSTRING 

i 

TWAUFL 

USER INTERFACE SUBTASK FLAG 


1 • ♦ • •••• 


TWAUFL1 

USER INTERFACE SUBTASK ATTACHED 


• 1 • • 


TWAUFL2 

USER INTERFACE SUBTASK ABEND 


• ♦ 1. • • • • 


TWAUFL3 

POST VTAM INTERFACE SUBTASK 


•••1 •••• 


TWAUFL4 

ESTAE EXIT COMPLETE 


.... 1111 



RESERVED 

83 

(53) BITSTRING 

i 

TWACFL 

CONSOLE COMM SUBTASK FLAG 


TWAR 

308 


MVS/370 Debifa Hdbk Vol 5 


TWAR 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


















(54) CHARACTER 100 TWAM 


(54) CHARACTER 


4 TWAMID 


(58) CHARACTER 


48 TWAMEWA 


(88) ADDRESS 


4 TWAMTWA 


(80 UNSIGNED 


4 TWAMABFC 


(90) UNSIGNED 


8 TWAMRTFC 


(98) CHARACTER 


32 TWAME 



(98) CHARACTER 


4 TWAMEI 


(98) UNSIGNED 

(99) ADDRESS 


1 TWAMEIFC 
3 TWAMERA 


(90 ADDRESS 


4 TWAMERRS 



CONSOLE COMM SUBTASK ATTACHED 
CONSOLE COMM SUBTASK ABEND 
ESTAE EXIT COMPLETE 
RESERVED 


•MAIN* 

ESTAE EXIT WORK AREA 
TWAR POINTER FOR ESTAE EXIT 
ABEND RECORDING AREA 
RETRY RECORDING AREA 
FOOTPRINT FOR ERROR 


FUNCTION CODE 
RETRY ADDRESS 

REGS SAVE AREA ADDRESS 


1985 


TWAR 

Data Area Descriptions 309 
















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


184 

(B8) CHARACTER 

100 

TWAV 


184 

(B8) CHARACTER 

4 

TWAVID 

'VTAM* 

188 

(BC) CHARACTER 

48 

TWAVEWA 

ESTAE EXIT WORK AREA 

236 

(EC) ADDRESS 

4 

TWAVTWA 

TWAR POINTER FOR ESTAE EXIT 

240 

(F0) UNSIGNED 

4 

TWAVABFC 

ABEND RECORDING AREA 

244 

(F4) UNSIGNED 

8 

TWAVRTFC 

RETRY RECORDING AREA 

252 

(FC) CHARACTER 

32 

TWAVE 

FOOTPRINT FOR ERROR 

RECOVERY AND ESTAE 


252 

(FC) 

CHARACTER 

4 

TWAVEI 


252 

(FC) 

UNSIGNED 

1 

TWAVEIFC 

FUNCTION CODE 

253 

(FD) 

ADDRESS 

3 

TWAVERA 

RETRY ADDRESS 

256 

(100) 

ADDRESS 

4 

TWAVERRS 

REGS SAVE AREA ADDRESS 

284 

(11C) 

CHARACTER 

16 

TWAV I 


284 

(11C) 

BITSTRING 

4 

TWAVECB 

VTAM INTERFACE SUBTASK ECB 

288 

(120) 

ADDRESS 

4 

TWAVTEQH 

TPEND QUEUE HEADER 

292 

(124) 

ADDRESS 

4 

TWAVTHQH 

TERMINAL HANDLING QUEUE HEADER 

296 

(128) 

ADDRESS 

4 

TWAVACQH 

ACB CONTROL QUEUE HEADER 

USER 

INTERFACE SUBTASK 

SEGMENT 




TWAR 

310 


MVS/370 Debug Hdbk Vol 5 


TWAR 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 

■Q EFSETS _ TYPE LENGTH NAME _ 

300 (120 CHARACTER 100 TWAU 

300 (120 CHARACTER 4 THAUID 

304 (130) CHARACTER 48 TWAUEWA 

352 (160) ADDRESS 4 TNAUTWA 

356 (164) UNSIGNED 4 TMAUABFC 

360 (168) UNSIGNED 8 TWAURTFC 

368 (170) CHARACTER 32 TMAUE 

RECOVERY AND ESTAE 

368 (170) CHARACTER 4 TWAUEI 

368 (170) UNSIGNED 1 TWAUEIFC 

369 (171) ADDRESS 3 TWAUERA 

372 (174) ADDRESS 4 TWAUERRS 

400 (190) CHARACTER 8 TWAUI 

400 (190) BITSTRING 4 TWAUECB 

404 (194) ADDRESS 4 TWAUACQH 

CONSOLE COMMUNICATION SUBTASK SEGMENT 


408 

(198) 

CHARACTER 

100 

TWAC 

408 

(198) 

CHARACTER 

4 

TWACID 

TWAR 

LC28- 

1389-0 

(c) Copyright 

IBM 

Corf U 


•USER* 


ESTAE EXIT WORK AREA 
TWAR POINTER FOR ESTAE EXIT 
ABEND RECORDING AREA 
RETRY RECORDING AREA 
FOOTPRINT FOR ERROR 


FUNCTION CODE 
RETRY ADDRESS 

REGS SAVE AREA ADDRESS 


USER INTERFACE SUBTASK ECB 
ADDRESS SPACE CREATE Q HEADER 


•CCOM» 

TWAR 

, 1985 Data Area Descriptions 311 
















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


412 

(190 

CHARACTER 

48 

TWACEWA 

ESTAE EXIT WORK AREA 

460 

(ICC) 

ADDRESS 

4 

TWACTWA 

TWAR POINTER FOR ESTAE EXIT 

464 

(IDO) 

UNSIGNED 

4 

TWACABFC 

ABEND RECORDING AREA 

468 

(1D4) 

UNSIGNED 

8 

TWACRTFC 

RETRY RECORDING AREA 

476 

(1DC) 

CHARACTER 

32 

TWACE 

FOOTPRINT FOR ERROR 

RECOVERY AND ESTAE 


476 

(1DC) 

CHARACTER 

4 

TWACEI 


476 

(1DC) 

UNSIGNED 

1 

TWACEIFC 

FUNCTION CODE 

477 

(1DD) 

ADDRESS 

3 

TWACERA 

RETRY ADDRESS 

480 

(1E0) 

ADDRESS 

4 

TWACERRS 

REGS SAVE AREA ADDRESS 

508 

(1FC) 

CHARACTER 

16 

TWACI 


508 

(1FC) 

BITSTRING 

4 

TWACECB 

CONSOLE COMM SUBTASK ECB 

512 

(200) 

ADDRESS 

4 

TWACSTPQ 

STOP COMMAND QUEUE HEADER 

516 

(204) 

ADDRESS 

4 

TWACMODQ 

MODIFY COMMAND QUEUE HEADER 

520 

(208) 

CHARACTER 

1 

TWACSKIP 

INTER-CSECT SWITCH 

521 

(209) 

CHARACTER 

3 


RESERVED 

524 

(200 

CHARACTER 

12 

TWAWORKE 

RETURN WORK ELEMENT 

536 

(218) 

CHARACTER 

0 

TWAEND 

END OF TWAR 


TWAR THAR 

312 MVS/370 Debug Hdbk Vol 5 LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 

CROSS REFERENCE 


HEX HEX HEX HEX HEX HEX 


J I 



■m 

nrnzm 

Emm 



E/IWJH 

TWAASCB 

c 


TWAMEI 

98 


TWAUFL3 

52 

20 

TWAC 

198 


TWAMEIFC 

98 


TWAUFL4 

52 

10 

THACABFC 

1D0 


TWAMERA 

99 


TWAU I 

190 


TWACCOMP 

4C 


TWAMERRS 

9C 


TWAUID 

12C 


TWACE 

1DC 


TWAMEWA 

58 


TWAURTFC 

168 


TWACECB 

1FC 


TWAMFL 

50 


TWAUTCB 

38 


TWACEI 

1DC 


TWAMFL1 

50 

80 

TWAUTWA 

160 


TWACEIFC 

1DC 


TWAMID 

54 


TWAV 

B8 


TMACERA 

1DD 


TWAMRTFC 

90 


TWAVABFC 

F0 


TWACERRS 

1E0 


TWAMSG 

30 


TWAVACQH 

128 


TWACEHA 

19C 


TWAMTWA 

88 


TWAVCOMP 

44 


TWACFL 

53 


TWAPASQH 

8 


TWAVE 

FC 


TWACFL1 

53 

80 

TWAPPSR 

24 


TWAVECB 

11C 


TWACFL2 

53 

40 

TWAR 

0 


TWAVEl 

FC 


TWACFL4 

53 

20 

TWARS0N 

2 


TWAVEIFC 

FC 


TWACI 

1FC 


TWASYNQH 

4 


TWAVERA 

FD 


TWACID 

198 


TWATCAST 

14 


TWAVERRS 

100 


TWACMODQ 

204 


TWATCSR 

20 


TWAVEWA 

BC 


TWACOMP 

0 


TWATTSR 

1C 


TWAVFL 

51 


TWACRTFC 

1D4 


TWAU 

12C 


TWAVFL1 

51 

80 

TWACSCB 

10 


TWAUABFC 

164 


TWAVFL2 

51 

40 

TWACSKIP 

208 


TWAUACQH 

194 


TWAVFL3 

51 

20 

TWACSTPQ 

200 


TWAUCOMP 

48 


TWAVFL4 

51 

10 

TWACTCB 

3C 


TWAUE 

170 


TWAVFL5 

51 

08 

THACTWA 

ICC 


TWAUECB 

190 


TWAVFL6 

51 

04 

THADEQAS 

2C 


TWAUEI 

170 


TWAV I 

11C 


TWAEESR 

28 


TWAUEIFC 

170 


TWAVID 

B8 


TWAEND 

218 


TWAUERA 

171 


TWAVRTFC 

F4 


TWAINIT 

18 


TWAUERRS 

174 


TWAVTCB 

34 


TWAM 

54 


TWAUEWA 

130 


TWAVTEQH 

120 


TWAMABFC 

8C 


TWAUFL 

52 


TWAVTHQH 

124 


TWAME 

98 


TWAUFL1 

52 

80 

TWAVTWA 

EC 


TNAMECB 

40 


TWAUFL2 

52 

40 

TWAWORKE 

20C 



TWAR 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


Data Area Descriptions 


TWAR 

313 


Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


U£1 


Common Name : IOS Unit Control Block 
Macro ID : IEFUCBOB 

DSECT Name : UCB (DSECT card precedes prefix). UCBCMSEG may be used in the USING 
statement for the common section. 

UCBCMEXT (DSECT for common UCB extension ), 

UCBMT (DSECT for magnetic tape extension)/ 

UCBOCR (DSECT for optical character reader extension)/ 

UCB3540X (DSECT for 3540 device extension)/ 

UCBUCS (DSECT for unit record with UCS extension)/ 

UCB3800X (DSECT for 3800 device extension) 

Created by : SYSGEN 

Subpool and Key : NUCLEUS resident and key 0 
Size : Variable 

Pointed to by : DEBUCBAD field of the DEB data area 
DDRFMUCB field of the DDRCOM data area 
DDRTOUCB field of the DDRCOM data area 
EHAUCB field of the ENA data area 
IOSUCB field of the IOSB data area 
JESUNITS field of the JESCT data area 
PCCACHUB field of the PCCA data area 
(channel-detected error UCB) 

RQEUCB field of the RQE data area 
SSDRSFRU field of the SSDR data area 
SSDRSTOU field of the SSDR data area 
TCCNUCB field of the TCCH data area 
TCTUCBP field of the TCT data area 
TIOEFSRT field of the TIOT data area 
Serialization t UCB lock/ compare & swap logic/ ENQ on major SYSIEFSD 
minor Q4. 

Function t The UCB describes the characteristics of a device to the I/O 
supervisor and is used by the job scheduler during allocation of the 
device. There is a UCB for each device attached to the system. For 
device code definitions/ see the UCBTYP data area description. 

OEF-S E IS_IYEi_ LENGTH NAME _ DESCRIPTION 


UCB 

314 


MVS/370 Debug Hdbk Vol 5 


UCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980/ 1985 




Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSET?_ HE! _ LENGTH NAME _ DESCRIPTION 


0 (0) STRUCTURE 

0 

UCB 

, UCBPTR-512 



UCBBGN 

"X»- 

-512 (-200) SIGNED 

4 

(126) 

RESERVED 



UCBPXST 

START OF USED FIELDS IN PREFIX 

-8 (-8) SIGNED 

4 

UCBLOCK 

DEVICE LOCK 

-4 (-4) ADDRESS 

4 

UCBIOQ 

ADDRESS OF LAST QUEUING ELEMENT USED FOR 
THIS DEVICE. ADDRESS OF ERP WORK AREA 
DURING INTERCEPT AND ASYNCHRONOUS ATTEN¬ 
TION/DEVICE END WITH UNIT CHECK CONDI¬ 
TIONS. WHEN DIRECT ACCESS VOLUME 
VERIFICATION (DAW) IS WAITING FOR A 
VOLUME MOUNT, THIS FIELD WILL POINT TO 
THE DAW SRB. 

• • • « 1 . . • 


UCBCURPX 

"X-UCBPXST"- ACTUAL PREFIX DATA LENGTH 



UCBPRFX 

"X-UCB"- TOTAL PREFIX LENGTH FOR PREFIX 
ADDRESSABILITY 

SYSGEN-INDEPENDENT 

COMMON SECTION 


0 (0) SIGNED 

4 

UCBOB 

UCBCMSEG 

"X"- START OF COMMON SECTION 


(0) BITSTRING 

1 UCBJBNR 

1 . 

UCBVRDEV 

, 1 • • •••• 

UCBJES3 

* « 1 « • • • • 

UCBDUC 

• ••1 • • • » 

UCBBOX 

• ••• 1 . . . 

UCBOLDSM 


UCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 


FLAG BYTE (0S/VS2) 

"X'80*"- UCB FOR VIO DEVICE 
W X , 40 ,W - ALL VOLUME MOUNTING AND DEVICE 
MANAGEMENT FOR THIS DEVICE IS CONTROLLED 
BY JES3 

"X'20DISPLAY DEVICE UNIT CHECK IPL 
"X'lO'it- IF THIS BIT AND UCBIORST BIT 
ARE ON, THE DEVICE HA BEEN FORCED OFF¬ 
LINE DUE TO A ERROR 

"X'08' B - OLTEP COMMUNICATING DIRECTLY 
WITH THE MASS STORAGE CONTROL CMSC), NOT 
THROUGH THE MASS STORAGE SYSTEM COMMU- 


1985 




UCB 

Data Area Descriptions 315 





Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 




• • • • • • 


1 


1 Cl) BITSTRING 



.1 


• • * • 


. . 1 . 


I • • • 


• • 


.1 


. 1 .. 


. . 1 . 


UCBMMSGP 

UCBURINP 

UCBMONT 

UCBFL5 

UCBDCC 

UCBAF 

UCBAMV 

UCBSASK 

UCBVSDR 

UCBENVRD 

UCBNALOC 


UCBALTCU 

UCBALTPH 


NICATOR (MSSC) 

n X »04 , «- MOUNT MESSAGE PENDING. THE 
DEVICE HAS BEEN SELECTED BY DEVICE ALLO¬ 
CATION, BUT NO MOUNT MESSAGE HAS BEEN 
ISSUED. 

n X t02'"- UNCONDITIONAL RESERVE IN PRO¬ 
GRESS 

"X’Ol'ii- VOLUME TO BE MOUNTED IS TO BE 
RETAINED OR CONTAIN A PASSED DATA SET 
(SET BY DEVICE ALLOCATION OR DATA MAN¬ 
AGEMENT FOR 0S/VS2) 

FLAGS 

"X'SO*"- DISCONNECT COMMAND CHAIN DEVICE 
n X f 40 «n- ATTENTION FOR THIS CONSOLE 
DEVICE IS TO BE PROCESSED BY THE COMMU¬ 
NICATIONS TASK 

"X»40*"- SUCCESSFUL COMPARISON CHECKING 
OF THE ACCESS METHOD CATALOG AND THE 
VTOC (VSAM DIRECT ACCESS DEVICES ONLY) 
n X*20***— DEVICE REQUIRES STAND ALONE 
SEEK 

"X'10*"- DEVICE HAS VARIABLE LENGTH 
SDR'S 

"X'08’"- DEVICE RETURNS ENVIRONMENTAL 
DATA 

"X'04»"- THIS OFFLINE DEVICE IS BEING 
USED BY A SYSTEM COMPONENT. THE DEVICE 
STATUS MUST NOT CHANGE TO ONLINE NOR 
WILL IT BE ALLOCATED. THE LAST 
PATH/CHANNEL/CPU TO THE DEVICE MUST NOT 
BE VARY'ED OFFLINE. THE DEVICE IS UNA¬ 
VAILABLE FOR USAGE BY ANOTHER SYSTEM 
COMPONENT WHICH PROCESSES OFFLINE 
DEVICES. TO SET THIS INDICATOR ON, A 
COMPONENT MUST OBTAIN VIA ENQ, EXCLU¬ 
SIVE, SYSTEM LEVEL CONTROL OF RESOURCE 
SYSIEFSD, Q4. SERIALIZATION IS NOT 
REQUIRED TO TURN THIS INDICATOR OFF. 
n X , 02 .n_ DEVICE HAS AN ALTERNATE CONTROL 
UNIT ADDRESS 

"X'Ol"*- DEVICE HAS AN ALTERNATE PATH 


UCB 

316 


MVS/370 Debug Hdbk Vol 5 


UCB 

LC28-1389-0 Cc) Copyright IBM Corp. 1980, 1985 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


2 (2) CHARACTER 
1111 1111 

3 (3) BITSTRING 
1 ••• .««. 

. 1 .. .... 


1 UCBID 
UCBSTND 
1 UCBSTAT 
UCBONLI 
UCBCHGS 


• • 1 • i • * * 

• ». 1 .. «. 

«.. . 1 .. . 
• «.. « 1 .. 

•. • • •• 1 • 

.. .. ... 1 


UCBRESV 

UCBUNLD 

UCBALOC 

UCBPRES 

UCBSYSR 

UCBDADI 


UCB IDENTIFICATION (FF) 

"X* FF'"- STANDARD UCB 
DEVICE STATUS 
"X'80*"- DEVICE IS ONLINE 
"X'40'"- DEVICE STATUS IS TO BE CHANGED 
FROM ONLINE TO OFFLINE, AND EITHER ALLO¬ 
CATION IS ENQUEUED ON DEVICES OR THE 
DEVICE IS ALLOCATED. (BIT 0 IS ALSO ON.) 
"X'20»"- THE MOUNT STATUS OF THE VOLUME 
ON THIS DEVICE IS RESERVED 
"X'10'"- UNLOAD OPERATOR COMMAND HAS 
BEEN ADDRESSED TO THIS DEVICE. THE 
DEVICE IS NOT YET UNLOADED. 

"X'08*"- DEVICE IS ALLOCATED 
n X , 04 ,n - THE MOUNT STATUS OF THE VOLUME 
ON THIS DEVICE IS PERMANENTLY RESIDENT 
n X'02 ,n - SYSTEM RESIDENCE DEVICE OR PRI¬ 
MARY CONSOLE OR ACTIVE CONSOLE 
"X'01'«- STANDARD TAPE LABELS HAVE BEEN 
VERIFIED FOR THIS TAPE VOLUME OR SECOND¬ 
ARY CONSOLE OR CONSOLE STATUS CHANGING 


4 

(4) 

SIGNED 

2 

UCBCHAN 

BINARY CHANNEL/UNIT ADDRESS 

4 

(4) 

SIGNED 

1 

UCBCHA 

BINARY CHANNEL ADDRESS OF LAST STARTED 
I/O OPERATION 

5 

(5) 

SIGNED 

1 

UCBUA 

BINARY UNIT ADDRESS 

6 

(6) 

BITSTRING 

2 

UCBSFLS 

DEVICE STATUS FLAGS 

6 

(6) 

BITSTRING 

1 

UCBFLA 

I/O SUPERVISOR FLAG BYTE A 





UCBFL1 

"UCBFLA"- ALIAS 


1. .. 



UCBBSY 

"X'80'"- DEVICE IS BUSY 


1... 

• • • • 


UCBBUSYD 

"UCBBSY"- ALIAS 


.1.. 

• II# 


UCBNRY 

"X’40*"- DEVICE NOT READY 


.1.. 

III# 


UCBNOTRD 

"UCBNRY"- ALIAS 


. .1. 

• # 1 # 


UCBPST 

"X’20POST FLAG (ASSOC IOQE) 


. .1. 

• • • • 


UCBUSING 

"UCBPST"- ALIAS 


.. .1 

I 1 • • 


UCBPSNS 

"X»io*»- PENDING SENSE OPERATION 


• • • • 

1... 


UCBCUB 

«X'08'"- CONTROL UNIT BUSY 


, • . * 

1... 


UCBNOTRC 

"UCBCUB"- ALIAS 


• • • • 

.1.. 


UCBSAP 

"X’04*"- STAND ALONE PROCESS ON DEVICE 


UCB 

LC28-1389-0 Cc) Copyright IBM Corp. 1980, 1985 


UCB 

Data Area Descriptions 317 












Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS 


LENGTH NAME 


ASCRIPTION 


7 


• •. • ••• 1 
(7) BITSTRING 
1 ... •» •. 



ACTIVE (EG., RESERVE) 

UCBACTV "XA*"- CHANNEL PROGRAM ACTIVE ON 

DEVICE 

UCBQISCE "X'01*"- DEVICE QUIESCED 

UCBFLB I/O SUPERVISOR FLAG BYTE B 

UCBIORST "X'80I/O RESTART VIA ALTERNATE CPU 

RECOVERY HAS FACTORED DEVICE OUT OF CON¬ 
FIGURATION BECAUSE OF NON-ACCESSABILITY. 
ALL INCOMING I/O REQUESTS ARE INTER¬ 
CEPTED AND MARKED IN PERMANENT ERROR 
WITH A COMPLETION CODE OF X'51'. HOWEV¬ 
ER, IF CHANNEL RECONFIGURATION HARDWARE 
(CRH) IS ACTIVE AND CRH WILL BE USED TO 
ACCESS THE DEVICE ASSOCIATED WITH THE 
UCB, THIS BIT WILL BE ON IN EVERY UCB 
THAT HAS OUTSTANDING I/O ACROSS A CRH 
PATH. 

UCBASNS "X'40"*- SENSE ACTIVE ON DEVICE 

UCBSPST "X'20 ,n - SENSE POST INDICATOR 

UCBRESVH "X'10*"- DEVICE RESERVED INDICATOR 

UCBCRHRV "X'08*"- RESERVED PATH THROUGH A CHANNEL 

RECONFIGURATION HARDWARE (CRH) CON¬ 
NECTION 

UCBCRHSN "X^A'"- IF 1, SENSE PENDING FROM INOP¬ 

ERATIVE CPU. IF 0, SENSE PENDING FROM 
OPERATIVE CPU. BIT IS SET ONLY WHEN 
CHANNEL RECONFIGURATION HARDWARE (CRH) 

IS ACTIVE. 

UCBVALPH "X'02'"- PATH VALIDATION 

UCBDPTH "X»01*"- IF 1,DYNAMIC PATH- 

ING/AVAILABILITY FEATURE IS OPERATIONAL 
FOR THIS DEVICE 


8 (8) BITSTRING 1 UCBCHM PATH STATUS MASK FOR THIS DEVICE 


8 (8) BITSTRING 1 UCBCHM1 SAME AS UCBCHM 

11. UCBPTHO "X'CO'"- PATHS FROM CPU 0 

1. UCBPPA "X»80*"- PRIMARY PATH CPU 0. IF 0, PATH 

IS AVAILABLE. IF 1, PATH IS UNAVAILABLE. 

.1. UCBSPA "X*40SECONDARY PATH CPU 0. IF 0, 

PATH IS AVAILABLE. IF 1, PATH IS UNA- 


UCB 

318 


MVS/370 Debug Hdbk Vol 5 


UCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 





Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


P-SESfiJS_ TYPE LENGTH NAME _ DESCRIPTION 

VAILABLE. 



..11 

• • • • 


UCBPTH1 

»X'30' n - PATHS FROM CPU 1 


. .1. 

ft ft ft ft 


UCBPPB 

n X'20 ,n - PRIMARY PATH CPU 1. IF 0, PATH 
IS AVAILABLE. IF 1, PATH IS UNAVAILABLE. 


...1 

ft ft ft ft 


UCBSPB 

"X'10 ,n - SECONDARY PATH CPU 1. IF 0, 

PATH IS AVAILABLE. IF 1, PATH IS UNA¬ 
VAILABLE. 


• • • ft 

1... 


UCBRV014 

"X'Oa^C'X"*- RESERVED 


ft ft ft ft 

.1.. 


UCBRV015 

"X , 04',;C'X ,B - RESERVED 


« • « • 

. .1. 


UCBRV016 

"X'02*»>C'X ,W - RESERVED 


• • « • 

.. .1 


UCBRV017 

"X'Ol'^C'X"*- RESERVED 

9 

(9) 

SIGNED 

1 

UCBCNT 

COUNT OF QUEUED REQUESTS WAITING FOR 
DEVICE 

10 

(A) 

SIGNED 

1 

UCBLCI 

INCREMENT WHICH, WHEN MULTIPLIED BY 32, 
BECOMES AN INDEX TO THE LOGICAL CHANNEL 
TABLE (LCHTAB) 

11 

(B) 

HEX 

1 

UCBCPU 

LAST SIO TO DEVICE ISSUED FROM THIS 

CPUID 

12 

(C) 

BITSTRING 

1 

UCBWGT 

FLAGS 


1... 

ft ft ft ft 


UCBIN 

n X*80 * n — SYSIN 


.1. . 

ft ft ft ft 


UCBOUT 

n X' 40 * SYSOUT 


..1. 

ft ft ft ft 


UCBPUB 

W X , 20ASSUMED THAT THIS DEVICE WILL 

BE ALLOCATED FOR A PUBLIC VOLUME REQUEST 


.. .1 

ft ft ft ft 


UCBREW 

"X'10 ,n - REWIND COMMAND HAS BEEN 
ADDRESSED TO THIS MAGNETIC DEVICE BY I/O 
SUPPORT 


# § t < 

1.. . 


UCBMTPXP 

"X'08'"- MULTIPLE EXPOSURE DEVICE 


t • • • 

.1. . 


UCBVORSN 

n X* 04 * n — VARY COMMAND OPERATOR REASON 
INDICATOR 


• • • • 

. .1. 


UCBVHRSN 

»X»02'"- VARY COMMAND HIERARCHY REASON 
INDICATOR 


• • • • 

. . .1 


UCBRV029 

"X'Ol'^C'X*"- RESERVED 

13 

(D) 

CHARACTER 

3 

UCBNAME 

UNIT NAME (EBCDIC) 

16 

(10) 

CHARACTER 

4 

UCBTYP 

DEVICE TYPE 

16 

(10) 

BITSTRING 

1 

UCBTBYT1 

MODEL BITS 


1. .. 

ft ft ft ft 


UCB1FEA0 

"X'80'"- BIT 0 


.1.. 

ft ft ft ft 


UCB1FEA1 

"X'40'"- BIT 1 


..1. 

ft ft ft ft 


UCB1FEA2 

"X'20*"- BIT 2 


UCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980 


1985 


UCB 

Data Area Descriptions 319 





Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


17 


18 

18 


19 


• ••1 •••« 


UCB1FEA3 

"X'lO'"- BIT 3 

• ••• 1 • • « 


UCB1FEA4 

"X’08' n - BIT 4 

» * « * » 1 • » 


UCB1FEA5 

W X’04 ,n - BIT 5 

• ••• * 1 • * 


UCBD1600 

w X *04"*- 1600 BPI 

♦ • • • • * 1 • 


UCB1FEA6 

nx'02'"- BIT 6 

• • • t • « 1 » 


UCBD6250 

"X'02'"- 6250 BPI 

* • • * • t • 1 


UCB1FEA7 

"X'01'"- BIT 7 

(11) BITSTRING 

i 

UCBTBYT2 

OPTION FLAGS 

1 • • • •••• 


UCB20PT0 

"X'80FLAG 0 

• 1 • • *«* * 


UCB20PT1 

"X'40'"- FLAG 1 

-.1. 


UCB20PT2 

"X*20 ,n - FLAG 2 

. .1. 


UCBDUDN1 

"X'20'"- DUAL DENSITY 800/1600 BPI 

• •1. 


UCBRR 

"X'20 THIS DEVICE IS SHARABLE BETWEEN 

TWO CPU’S (DIRECT ACCESS) 

•••1 •••• 


UCB20PT3 

"X’10"’- FLAG 3 

•••1 •••• 


UCBDUDN2 

"X'10' n - DUAL DENSITY 1600/6250 BPI 

•••1 •••• 


UCBRPS 

"X’10' n - ROTATIONAL POSITION SENSING 
(RPS) DEVICE (DIRECT ACCESS) 

•••• 1••• 


UCB20PT4 

"X*08'FLAG 4 

• ••• 1 •«• 


UCBRWTAU 

"X'08’"- READ/WRITE TAPE CONTROL 

_1... 


UCBRVDEV 

"X’08 ,n - IF 0, REAL DEVICE. IF 1, VIRTU¬ 
AL DEVICE. (DIRECT ACCESS) 

• • i * . 1. . 


UCB20PT5 

’ , X , 04'"- FLAG 5 

• »* * • • 1« 


UCB20PT6 

"X’02”’- FLAG 6 

• * *• **1* 


UCBVLPHR 

"X'02 ,n - VOLUME REQUIRES ALTERNATE POWER 
SOURCE DEVICE 

• • • • •••1 


UCB20PT7 

"X’01'"- FLAG 7 

•••• •••1 


UCBDVPWR 

"X'01'"- DEVICE HAS ALTERNATE POWER 
SOURCE 

(12) BITSTRING 

i 

UCBDVCLS 

SAME AS UCBTBYT3 

(12) BITSTRING 

i 

UCBTBYT3 

CLASS BITS 

1 • • • •••• 


UCB3TAPE 

"X'SO’"- TAPE 

»1 f * »• * * 


UCB3C0MM 

’.X’40’"- COMMUNICATIONS 

• 1 • • • • • 1 


UCB3CTC 

"X’41'"- CHANNEL-TO-CHANNEL ADAPTER 

• * 1 • •••• 


UCB3DACC 

n X*20'DIRECT ACCESS 

•••1 


UCB3DISP 

"X'lO'"- DISPLAY 

»* i * 1 • • • 


UCB3UREC 

t*X’08"»- UNIT RECORD 

•••• tlii 


UCB3CHAR 

’’X'04”’- CHARACTER READER 

•••• til* 


UCBRSV10 

"X*02',,C'X'"- RESERVED 

•••• •••1 


UCBRSV11 

"X’Ol’^C’X'"- RESERVED 

(13) CHARACTER 

i 

UCBUNTYP 

SAME AS UCBTBYT4 


i 


UCB 

320 


MVS/370 Debug Hdbk Vol 5 


UCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


■QEE S g T S_ TYPE LENGTH NAME _ DESCRIPTION 


(13) 1 

CHARACTER 

1 UCBTBYT4 

DEVICE CODE 


1111 

.. .1 

UCB3791L 

n X*Fl ,w - 3791 

LOCAL CONTROL UNIT 

1... 

• • « • 

UCB3480 

"X'80*«- DEVICE SUPPORT 

.1.. 

11.. 

UCB3838 

"X*4C'"- 3838 

ARRAY PROCESSOR 

.1.. 

..1. 

UCBDSM 

"X'42'"- MASS 
(3851) 

STORAGE CONTROL (MSC) 

. .11 

11.1 

UCB7443 

«X*3D'"- 7443 

SERVICE RECORD FILE 

.. .1 

1. .1 

UCB3895 

"X'19*"- 3895 

DEVICE 

. . .1 

...1 

UCB42AD1 

"X’ll*"- 2702 
ADAPTOR 

CONTROL UNIT WITH TYPE 1 

.. .1 

. . .1 

UCB3263 

"X , ll ,n - 3263 

DEVICE 

.. .1 

. .11 

UCB4248 

"X*13' n - DEVICE SUPPORT 

• 1 • • 

111. 

UCB3800 

"X'OE*"- 3800 

DEVICE 

• t • • 

11.1 

UCB3036 

"X'0D ,n - 3036 

DISPLAY CONSOLE 

• • • • 

1..1 

UCB3211 

"X'09'"- 3211 

PRINTER 

• • « • 

..11 

UCB3400 

"X'OS"*- 3400 

MAGNETIC TAPE 

• • • • 

...1 

UCB2400 

"X'01 ,n - 2400 
DEVICE 

SERIES MAGNETIC TAPE 


20 (14) ADDRESS 4 UCBEXTPT ADDRESS OF COMMON UCB EXTENSION 


20 (14) BITSTRING 

1 * • • • • • • 

* 1 ■ • • < • • 

»• 1 • ».«. 

*••1 • • •. 

• •«• 1»• * 


UCBFLC 

UCBATTP 

UCBWAA 

UCBUDE 

UCBITF 

UCBIVRS 


.1.. UCBIVRR 


UCBTICBT 




UCBDDRSW 


21 (15) ADDRESS 

• • • • • • ♦ 1 

1... »♦ • • 

* 1 *» • • • • 

• • 1 * ••* * 


3 UCBEXTP 
SRTEJBNR 
SRTEMNT 
SRTESTAT 
SRTEONLI 
SRTECHGS 
SRTERESV 


I/O SUPERVISOR FLAG BYTE C 

"X'SO'"- ATTENTION PENDING 

"X , 40 ,n - WORK AREA APPENDED 

"X , 20" , “ UNSOLICITED DEVICE END RECEIVED 

"X»10'«- INTERCEPT CONDITION 

W X'08INTERVENTION REQUIRED MESSAGE 

ISSUED 

"X'04'"- INTERVENTION REQUIRED MESSAGE 
IS NEEDED 

"X*02'"- CHANNEL END AND/OR DEVICE END 
OR MOUNT CONDITION PENDING. 

"X'01 ,n - DDR SWITCH PENDING ON THIS 
DEVICE 

ADDRESS OF COMMON UCB EXTENSION 

"UCBJBNR"- ALIAS 

"UCBMONT"- ALIAS 

"UCBSTAT"- ALIAS 

"UCBONLI"- ALIAS 

"UCBCHGS"- ALIAS 

"UCBRESV"- ALIAS 




UCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


UCB 

Data Area Descriptions 321 










Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 



. ..1 _ SRTEUNLD "UCBUNLD"- ALIAS 

_ 1... SRTEALOC "UCBALOC"- ALIAS 

.1.. SRTEPRES "UCBPRES"- ALIAS 

.1. SRTESYSR "UCBSYSR"- ALIAS 

.1 SRTEDADI "UCBDADI"- ALIAS 

UCBFL2 "UCBFLl"- ALIAS (UCBCHA WAS ONCE UCBFL1) 


DEVICE-DEPENDENT UCB SEGMENTS 



28 (1C) CHARACTER 6 UCBVOLI VOLUME SERIAL NUMBER 

34 (22) BITSTRING 1 UCBSTAB VOLUME STATUS 

1. UCBBSVL "X'80'"- VOLUME DEMOUNTABLE BY DATA MAN¬ 
AGEMENT (DIRECT ACCESS) (0S/VS2) 

1. UCBDVSHR "X'80DEVICE NOT SHARABLE AMONG 

SEVERAL CPU'S (3420 MAGNETIC TAPE 
DEVICES ONLY) 

.1. UCBPGFL "X'40*"- UCB IS OPEN AND IS BEING USED 

AS A PAGE FILE 

..1. UCBPRSRS "X'20"*- DURING VOLUME ATTRIBUTE PROC¬ 
ESSING THIS BIT IS USED BOTH TO DENOTE 

UCB'S THAT WERE MARKED PERMANENTLY RESI- 


UCB 

322 


MVS/370 Debug Hdbk Vol 5 


UCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


I 











Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


• 1 • • t • • 

UCBBALB 

• • 1 • • • • 

UCBBPRV 

• • • X • • • 

UCBBPUB 

• * • • X • • 

UCBBSTR 

• • • •«X • 

UCBSHAR 

« • • • • • X 

UCBBNUL 


35 (23) HEX 

1 ... • •. • 


UCBDMCT 

UCBMOUNT 


DENT PRIOR TO GETTING CONTROL AND TO 
IDENTIFY DEVICES THAT WERE SELECTED BY 
THE OPERATOR FOR MOUNTING VOLUMES (DI- 
•*X'20'"- ADDITIONAL VOLUME LABEL PROC¬ 
ESSING (TAPE) 

"X'10"*- PRIVATE VOLUME USE STATUS 
"X'OS"*- PUBLIC VOLUME USE STATUS 
"X'04"»- STORAGE VOLUME USE STATUS (DI¬ 
RECT ACCESS) THE VOLUME MOUNTED HAS AN 
AMERICAN NATIONAL STANDARD LABEL (TAPE) 
"X'02'"- VOLUME SHAREABLE AMONG JOB 
STEPS (0S/VS2) 

"X'Ol*"- CONTROL VOLUME A CATALOG DATA 
SET IS ON THIS VOLUME (DIRECT ACCESS) IF 
THE MULTIPLE CONSOLE SUPPORT OPTION IS 
IN THE SYSTEM, DEMOUNT OR MOUNT MESSAGES 
HAVE BEEN ISSUED AND THE MESSAGE ID ( S 
ARE AT OFFSETS 40 THROUGH 45. OPEN HILL 
DELETE THE MESSAGES AND TURN THIS BIT 
OFF. (TAPE) 

VOLUME USE BYTE 

"X'80 ,n - IF 0, A MOUNT VERIFICATION HAS 
BEEN PERFORMED. IF 1, A MOUNT REQUEST 
HAS BEEN ISSUED. (DIRECT ACCESS) FOR 
TAPE, THE FOLLOWING MEANINGS APPLY. NOR¬ 
MAL SCHEDULER PROCESSING IF 0, NO VOLUME 
HAS BEEN MOUNTED. IF 1, A VOLUME HAS 
BEEN MOUNTED BUT NO VOLUME LABEL PROC¬ 
ESSING HAS BEEN PERFORMED. SL OPEN ROU¬ 
TINE IF 0, STANDARD VOLUME LABEL AND 
CORRECT SERIAL NUMBER HAVE BEEN VERI¬ 
FIED. IF 1, VOLUME LABEL IS NOT STANDARD 
FORMAT OR SERIAL NUMBER IS NOT CORRECT. 
(A MOUNT MESSAGE HAS BEEN ISSUED.) NSL 
OPEN ROUTINE IF 0, NON-STANDARD VOLUME 
LABEL HAS BEEN VERIFIED. IF 1, VOLUME 
LABEL IS NOT STANDARD FORMAT. (CONTROL 
PASSES TO THE PROCESSING PROGRAM'S 
NON-STANDARD LABEL PROCESSING ROUTINE.) 
VOLUME LABEL IS STANDARD FORMAT. (CON¬ 
TROL REMAINS WITH THE OPEN ROUTINE. A 


. 1980, 1985 


\ 


UCB 

LC28-1389-0 (e) Copyright IBM Corp 


UCB 

Data Area Descriptions 323 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 

MOUNT MESSAGE HAS BEEN ISSUED.) BLP OPEN 
ROUTINE IF 0, VOLUME LABEL HAS NOT BEEN 
.111 1111 UCBDMC n X'7F ,n - NUMBER OF DCB'S OPEN FOR THIS 

VOLUME 

UCBDATP "X"- END OF COMMON DIRECT ACCESS/TAPE 

AREA 


36 

(24) SIGNED 

1 

UCBSQC 

NUMBER OF RESERVE MACRO INSTRUCTIONS 
ISSUED 

37 

(25) BITSTRING 

1 

UCBFL4 

DIRECT ACCESS FLAG BYTE 


1 • • • •••• 


UCB DAW 

“X'80 DIRECT ACCESS VOLUME VERIFICA¬ 

TION IN CONTROL (DAW) 


• 1 • • « • » • 


UCBHDAV 

n X , 40 ,n - DAW WAITING FOR MOUNT 


• • 1 * 


UCBRESVP 

n X « 20 ,n - RESERVE CHANNEL PROGRAM PENDING 


• ••1 * « » * 


UCBDSS 

"X'10*"- READ HOME ADDRESS AND READ 
RECORD ZERO OPERATIONS HAVE BEEN PER¬ 
FORMED BY DYNAMIC SUPPORT SYSTEM (DSS) 


• ••• lit* 


UCBATTN 

"X’OS"*- 3330V ATTENTION RECEIVED 


• ••• • 1 • • 


UCBHOLD 

"X'04 ,B - 3330V CYLINDER FAULT PENDING 


• • • • 111* 


UCBMAT 

"X*02'"- 3330V ATTENTION OVERDUE 


.... ...1 


UCBRRP 

"X*01 ,B - RESERVE/RELEASE PENDING 

38 

(26) SIGNED 

1 

UCBUSER 

NUMBER OF CURRENT USERS 

39 

(27) SIGNED 

1 

UCBSATI 

ATTENTION TABLE INDEX SAVED BY THE SCHE¬ 
DULER. 

40 

(28) ADDRESS 

4 

UCBBASE 

ADDRESS OF BASE EXPOSURE UCB 

44 

(20 ADDRESS 

4 

UCBNEXP 

BASE ADDRESS OF LAST STARTED EXPOSURE 
NON-BASE ADDRESS OF NEXT EXPOSURE IN THE 
RING THIS ADDRESS POINTS TO THE MULTI¬ 
PROCESSING PREFIX 

MAGNETIC TAPE SEGMENT 


UCB 

324 


MVS/370 Debug Hdbk Vol 5 


UCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME_DESCRIPTION 


UCBVOLI, UCBSTAB AND UCBDMCT ARE SAME IN TAPE SEGMENT AS 
IN DIRECT ACCESS SEGMENT 


24 

26 

(18) 

(1A) 

SIGNED 

SIGNED 

2 

2 

UCBFSCT 

UCBFSEQ 

DATA SET SEQUENCE COUNT 

DATA SET SEQUENCE NUMBER 

28 

(1C) 

CHARACTER 

8 


UCBVOLI, UCBSTAB AND UCBDMCT AS IN 

DIRECT ACCESS SEGMENT 

36 

(24) 

CHARACTER 

6 

UCBFSER 

BEFORE OPEN, MESSAGE ID'S. SEE UCBSTAB 
BIT 7. AFTER OPEN, DATA SET SERIAL NUM¬ 
BER 

42 

(2A) 

HEX 

1 

UCBRES1B 

RESERVED 

43 

(2B) 

BITSTRING 

1 

UCBTFL1 

FLAG BYTE (TAPE DEVICES ONLY) 


1. UCBNLTP "X*80*"- TAPE VOLUME DOES NOT CONTAIN 

LABELS 

.1. UCBNSLTP "X'40'"- TAPE CONTAINS NON-STANDARD 

LABELS 

..1. UCBDQDSP "X'20*"- DEQUEUE TAPE VOLUME WHEN 

DEMOUNTED 

...1 l... UCBTFL1S n X'18 ,n UCBTFL1 BITS SWAPPED BY DDR 

...1 _ UCB3430 "X'10"* TAPE IS 3430 

_ 1... UCBRV006 "X'08',,C'X"*- RESERVED SWAPPED BY DDR 

.1.. UCBRV007 "X’04',,C'X"*- RESERVED 

.1. UCBRV008 "X'OE'^C'X"*- RESERVED 

.1 UCBRV009 "X'01',,C'X"*- RESERVED 

44 C2C) ADDRESS 4 UCBXTN ADDRESS OF THE MAGNETIC TAPE UCB EXTEN¬ 

SION 

44 (20 BITSTRING 1 UCBVOPT VOLUME STATISTICS OPTION BITS 

1. UCBESV "X'80'"- ERROR STATISTICS BY VOLUME 

(ESV) RECORDS KEPT 

.1. UCBEVA "X*40*"— ERROR VOLUME ANALYSIS (EVA) 

RECORDS KEPT 

..1. UCBESVC "X'20"*- IF 0, ESV RECORDS SENT TO 

SYS1.MAN (X OR Y) DATA SET. IF 1, ESV 


UCB UCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 Data Area Descriptions 325 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 





RECORDS SENT TO CONSOLE. 

* » • 1 «••• 

UCBERPC 

"X'10'"- AN ERROR RECOVERY PROCEDURE HAS 



CONTROL 

• ••• 1 • * * 

UCBESVE 

"X'08 ,n - AN ESV RECORD HAS BEEN ISSUED 



FOR THIS VOLUME BECAUSE OF AN EOV CONDI¬ 



TION 

•••• •X•• 

UCBRSV20 

"X'04',,C'X'"- RESERVED 

««•« • • X • 

UCBRSV21 

n X'02',,C'X ,n - RESERVED 

• ••• t • • 1 

UCBRSV22 

"X'Ol'^C'X'"- RESERVED 

(2D) ADDRESS 

3 UCBXTNB 

ADDRESS OF THE MAGNETIC TAPE UCB EXTEN¬ 



SION 


SRTEVOLI 

"UCBVOLI"- ALIAS 


SRTESTAB 

"UCBSTAB"- ALIAS 

1. 

SRTEBSVL 

"UCBBSVL"- ALIAS 

*•1* •••• 

SRTEBALB 

"UCBBALB"- ALIAS 

•••1 •••« 

SRTEBPRV. 

"UCBBPRV"- ALIAS 

• • • * 1 • • • 

SRTEBPUB 

"UCBBPUB"- ALIAS 

•••• •1•• 

SRTEBSTR 

"UCBBSTR"- ALIAS 

« « «« • X • • 

SRTEASCI 

"UCBBSTR"- ALIAS 

« • • • t X • • 

UCBASCI 

"SRTEASCI"- ALIAS 

• ••• •X » * 

SRTEBVQS 

"SRTEBSTR"- ALIAS 

• * •» • • * X 

SRTEBNUL 

"UCBBNUL"- ALIAS 


SRTEDMCT 

"UCBDMCT"- ALIAS 


SRTEFSCT 

"UCBFSCT"- ALIAS 


SRTEFSEQ 

"UCBFSEQ"- ALIAS 


SRTEUSER 

"UCBUSER"- ALIAS 


UNIT RECORD HITH 

UNIVERSAL CHARACTER SET (1403, 3211) 
OR OPTICAL CHARACTER READER (3886) 

OR 3540 DEVICE 
OR 3800 DEVICE 
UCB SEGMENT 


24 (18) ADDRESS 4 UCBXTADR ADDRESS OF UCS UCB EXTENSION (1403 OR 

3211) OR ADDRESS OF OPTICAL CHARACTER 
READER UCB EXTENSION (3886) OR ADDRESS 
OF 3540 DEVICE UCB EXTENSION (3540) OR 


UCB 

326 


MVS/370 Debug Hdbk Vol 5 


UCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 











Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 

ADDRESS OF 3800 UCB EXTENSION (3800) 

GRAPHICS EXCEPT 3270 
UCB SEGMENT 


24 

(18) SIGNED 

2 

UCBSTART 

LAST START ADDRESS 

26 

(1A) SIGNED 

I 

UCBOPEN 

NUMBER OF DCB'S THAT ARE CURRENTLY OPEN 
FOR THIS DEVICE 

27 

(IB) CHARACTER 

1 

UCBGCB 

GRAPHIC CONTROL BYTE USED FOR ATTENTION 
HANDLING 

28 

(1C) ADDRESS 

4 

UCBTEB 

ADDRESS OF TASK ENTRY (TE) BLOCK 

32 

(20) HEX 

4 

UCBSNS 

SENSE INFORMATION 

36 

(24) ADDRESS 

4 

UCBBTA 

ADDRESS OF BUFFER TABLE 

36 

(24) SIGNED 

1 

UCBDI 

DEVICE OR DEVICES ON A CONTROL UNIT TO 
WHICH BUFFER SECTIONS ARE ASSIGNED 

37 

(25) ADDRESS 

3 

UCBBTB 

ADDRESS OF BUFFER TABLE 

3270 

GRAPHICS 




UCB SEGMENT 





24 (18) BITSTRING 2 UCBA0F ADDITIONAL OPTIONAL FEATURES. AN EXTEN¬ 

SION OF THE OPTIONAL FEATURES BYTE OF 
THE UCBTYP FIELD. 


(18) BITSTRING 

1 UCBAOF1 

1 • • • • • * • 

UCBOFMCR 

• X•• «••• 

UCBOFSP 

• •X* • • • • 

UCBOFNL 

• ••1 • • • • 

UCBOFPTR 

• * * * 1. . . 

UCBRSV65 


UCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 


FIRST BYTE OF UCBA0F 

"X , 80 ,n - MAGNETIC CARD READER ADAPTER 

FOR 3277 ONLY 

n X'40* n — SELECTOR PEN FOR 3277 ONLY 
"X'20"*- NUMERIC LOCK FOR 3277 ONLY 
"X'lO'"- PREPARE TO READ FEATURE 
"X'OS'^C’X*"- RESERVED 


UCB 

1985 Data Area Descriptions 327 












Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 



.1. . 


UCBRSV66 

"X'04',,C'X' n - RESERVED 


«••• • • 1 t 


UCBRSV67 

"X'02*,,C'X' n - RESERVED 


• ••• • • • 1 


UCBRSV68 

"X'Ol',,C'X*"- RESERVED 

25 

(19) BITSTRING 

1 

UCBA0F2 

SECOND BYTE OF UCBAOF 


1 • • • •••• 


UCBRSV69 

"X'SOS.C'X*"- RESERVED 


.1. 


UCBRSV70 

■X'M'mC'X 1 "- RESERVED 


. .1. 


UCBRSV71 

"X'20',,C'X'"- RESERVED 


••*1 •••« 


UCBRSV72 

"X'10*,,C'X*"- RESERVED 


_1... 


UCBRSV73 

■X'OSS^'X*"- RESERVED 


.le. 


UCBRSV74 

"X*04',,C'X'"- RESERVED 


.1. 


UCBRSV75 

"X'02*, (CX 1 ** RESERVED 


.1 


UCBRSV76 

"X'01',,C'X'"- RESERVED 

26 

(1A) SIGNED 

1 

UCBATNCT 

ATTENTION COUNT. THE NUMBER OF ATTEN¬ 
TIONS NOT SERVICED IN THE LINE GROUP. 
PRESENT ONLY IF THE DEVICE INDEX FIELD 

IS 1. OTHERWISE, THIS FIELD IS RESERVED. 

27 

(IB) BITSTRING 

1 


UCBGCB CONTROL BYTE. USED FOR ATTENTION 
HANDLING FLAGS 


1. 


UCBOLTEP 

"X'80' n - OLTEP IN CONTROL OF THE DEVICE 


• 1 • • •••• 


UCBRSV77 

"X'M'mC'X'"- reserved 


••1* •••• 


UCBRSV78 

"X'20',,C'X»"- RESERVED 


• ••1 • * * • 


UCBRSV79 

"X'10',,C'X'"- RESERVED 


• « * • 1 • • * 


UCBRTIAC 

"X'08'"- READ TI ACTIVE 


• • • • • 1 • • 


UCBRIPND 

"X'04*"- READ INITIAL PENDING 


• ••• • •1 * 


UCBSKPFG 

"X'02'"- SKIP FLAG 


• ••• • * * 1 


UCBATRCD 

"X'Ol'"- ATTENTION RECEIVED FROM THE 
DEVICE 

28 

(1C) ADDRESS 

4 

UCBIRB 

ADDRESS OF THE IRB USED FOR SCHEDULING 
THE SECOND LEVEL ATTENTION ROUTINE 

28 

(1C) BITSTRING 

1 

UCBGRAF 

GRAPHICS STATUS FLAGS (BTAM) 


1 • * • •••• 


UCBOIP 

"X'80*"- OPEN IS IN PROGRESS 


• 1** • • * • 


UCBDRO 

"X'40'"- DEVICE READY IN OPEN 


• • 1 • 


UCBDRNO 

"X'20' n — DEVICE READY NOT IN OPEN 


• ••1 •••• 


UCBBTAM 

"X'10'"- USE BTAM IGG019UP 


• ••• 1 • • • 


UCBUPM 

n X'08'"- USE PROVIDED MODULE 


• ••• • 1 • • 


UCBRPND 

"X'04'READY PROCESSING NOT DONE 


• ••• . . 1 . 


UCBDWNR 

«X'02'"- DEVICE WENT NOT READY 


UCB UCB 

328 MVS/370 Debug Hdbk Vol 5 LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 

















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


29 

(ID) 

. ...1 

ADDRESS 

3 

UCBRV039 

UCBIRBA 

"X'Ol"*- RESERVED BTAM 

ADDRESS OF THE IRB USED FOR SCHEDULING 
THE SECOND LEVEL ATTENTION ROUTINE 

32 

(20) 

ADDRESS 

4 

UCBLDNCA 

ADDRESS OF 3270 WORK AREA ESTABLISHED BY 
VTAM 

32 

(20) 

ADDRESS 

4 

UCBRDYQ 

ASYNCHRONOUS READY NOTIFICATION IRB 
ADDRESS (BTAM) 

32 

(20) 

SIGNED 

1 

UCBINRLN 

SAME AS UCBIRLN 

32 

(20) 

SIGNED 

1 

UCBIRLN 

INITIALIZED RLN. THE RELATIVE LINE NUM¬ 
BER (RLN) OF THE I0B INITIALIZED FOR A 
READ INITIAL. IF 0, NO READ INITIAL IS 
OUTSTANDING. PRESENT ONLY IF THE DEVICE 
INDEX FIELD IS 1. OTHERWISE, THIS FIELD 
IS RESERVED. 

33 

(21) 

ADDRESS 

3 

UCBLDNCB 

ADDRESS OF 3270 WORK AREA ESTABLISHED BY 
VTAM 

33 

(21) 

ADDRESS 

3 

UCBRDYQA 

ASYNCHRONOUS READY NOTIFICATION IRB 
ADDRESS (BTAM) 

36 

(24) 

ADDRESS 

4 

UCBCTLNK 

SAME AS UCBCTLNA BELOW 

36 

(24) 

SIGNED 

1 

UCBRLN 

DEVICE INDEX. INDEX TO THE DEB UCB 
ADDRESS FIELD FOR THIS DEVICE. THIS VAL¬ 
UE IS ALSO THE RELATIVE LINE NUMBER. 

37 

(25) 

ADDRESS 

3 

UCBCTLNA 

CONTROL BLOCK LINK. IF THE DEVICE INDEX 


FIELD IS 1, THIS FIELD CONTAINS THE 
ADDRESS OF THE DEB FOR THE LINE GROUP. 
IF THE DEVICE INDEX FIELD IS BETWEEN 2 
AND 255 INCLUSIVE, THIS FIELD CONTAINS 
THE ADDRESS OF THE UCB WITH A DEVICE 
INDEX OF 1. 


3704, 3705 TELEPROCESSING DEVICE 
UCB SEGMENT 


UCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


UCB 

Data Area Descriptions 329 











Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


24 

(18) 

ADDRESS 

4 

UCBRV040 

RESERVED FOR USE AS TELEPROCESSING 
EXTENSION POINTER 

28 

1- 

(1C) 

ADDRESS 

4 

UCBICNCB 

POINTER TO VTAM'S ICNCB 

■ .... 1 


CHANNEL-TO-CHANNEL (CTC) DEVICE 
UCB SEGMENT 


24 

(18) 

ADDRESS 

4 

UCBCTCAD 

ADDRESS OF AN SRB/IOSB TO BE USED FOR 
SENSE COMMAND BYTE BY IECTCATN IF 
UCBCTC80 BIT IS SET TO ZERO 

24 

(18) 

ADDRESS 

4 

UCBCTCAL 

ADDRESS OF JES3 ROUTINE FOR SWITCHING TO 
ALTERNATE PATH CTC IF UCBCTC80 BIT IS 

SET TO ONE 

28 

(1C) 

BITSTRING 

1 

UCBCTCF1 

CHANNEL-TO-CHANNEL (CTC) DEVICE FLAG 

BYTE 


1.. 

• ♦ • • • 


UCBCTC80 

"X'80‘"- IF THIS BIT IS ON, ABOVE WORD 
HAS UCBCTCAL MEANING. IF THIS BIT IS 

OFF, ABOVE WORD HAS UCBCTCAD MEANING. 


.1. 

• • • • « 


UCBRV076 

"X'40'mC'X'"- reserved 


..1 

• « * • • 


UCBRV077 

"X^O'^C'X'"- RESERVED 


• m • 

1 .... 


UCBRV078 

W X'10',,C»X'"- RESERVED 


• • • 

. 1... 


UCBRV079 

"X , 08 , ,,C , X"'- RESERVED 


• it 

. .1.. 


UCBRV080 

"X , 04 l ,,C'X'"- RESERVED 


« « • 

• • • 1 • 


UCBRV081 

n X*02',,C’X*"- RESERVED 


• « • 

• • • • 1 


UCBRV082 

W X'01',,C'X*"- RESERVED 

29 

(ID) 

HEX 

3 

UCBRV042 

RESERVED 

3851 

OR 3838 DEVICE 





UCB SEGMENT 


UCB 

330 


MVS/370 Debug Hdbk Vol 5 


UCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 












Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


24 

(18) 

ADDRESS 

4 

UCBIOSBA 

ADDRESS OF IOSB. SET BY IOS FOR ERROR 
CONDITIONS. 

28 

C1C) 

ADDRESS 

4 

UCBRV066 

RESERVED 

28 

1- 

C1C) 

ADDRESS 

4 

UCBAPUB 

3838 VPSS APUB ADDRESS 

-1 


UNIT CONTROL BLOCK EXTENSIONS 
COMMON UCB EXTENSION 

THIS EXTENSION IS POINTED TO BY THE UCBEXTPT FIELD IN THE 
COMMON SEGMENT AND IS NOT CONTIGUOUS TO THE UCB. 





■ 

0 

CO) STRUCTURE 

0 UCBCMEXT 

t 


0 (0) SIGNED 1 UCBETI 


(1) 

SIGNED 

1 

UCBSTI 

(2) 
1.. 

BITSTRING 

* • • 9 « 

1 

UCBFL6 

UCBASUN 

.1. 

. .1 

• • • • » 

• • • • • 


UCBMDISP 

UCBDBUF 

(3) 

SIGNED 

1 

UCBATI 


1 . . . 


UCBRSV04 

. 1 .. 

• « « « 

UCBRSV05 

. . 1 . 

« » • • 

UCBRSV06 

.. .1 

0 « • t 

UCBRSV07 

• « • t 

1 . . . 

UCBRSV08 


. 1 .. 

UCBRSV09 

• • • • 

. . 1 . 

UCBHALI 


UCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 


A BINARY NUMBER USED BY THE EXIT EFFEC¬ 
TOR ROUTINE TO COMPLETE THE 8-BYTE NAME 
OF AN IBM-SUPPLIED ERROR ROUTINE FOR 
THIS DEVICE 

INCREMENT WHICH, WHEN MULTIPLIED BY 10, 
BECOMES AN INDEX TO THE STATISTICS TABLE 
(STATAB) 

DEVICE FEATURES BYTE 
"X^O'"- ASSIGN/UNASSIGN COMMANDS SUP¬ 
PORTED 

"X»40 ,n - DEVICE HAS MESSAGE DISPLAY 
"X'20 ,w - DATA IS BUFFERED PRIOR TO STOR¬ 
ING ON PERMANENT MEDIA 
INDEX TO THE ATTENTION TABLE CANTAB) OR 
OPTIONAL JOB ENTRY SUBSYSTEM CJES) FLAG 
BYTE 

"X'SO'^C'X'"- RESERVED 
"X^O'^C'X*"- RESERVED 
"X^O^CX'"- RESERVED 
"X'lOS^'X*"- RESERVED 
"X’OS'^C'X*"- RESERVED 
n X'04*,,C*X ,W - RESERVED 
"X'02'"- OPTIONAL JOB ENTRY SUBSYSTEM 


UCB 

1985 Data Area Descriptions 331 














Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 

(JES) ALLOCATION INDICATOR 



• ••* « • * 1 


UCBHPDV 

"X'01»"- OPTIONAL JOB ENTRY SUBSYSTEM 
(JES) PSEUDO-DEVICE 

4 

(4) SIGNED 

1 

UCBSNSCT 

COUNT OF SENSE BYTES PRESENTED BY THIS 
DEVICE 

5 

(5) BITSTRING 

1 

UCBFLP1 

FLAG BYTE 


1 • • • «••• 


UCBNSRCH 

"X^O*"- THE CURRENTLY ALLOCATED VOLUME 
WAS SPECIFICALLY REQUESTED BY VOLUME 
SERIAL NUMBER. IT IS NOT AVAILABLE FOR 
ASSIGNMENT BY OPEN/EOV FOR A 

NON-SPECIFIC VOLUME REQUEST. 


• 1 • • » * • • 


UCBSHRUP 

n X*40 SHAREABLE WHEN IN UNIPROCESSOR 

MODE 


» • 1 • *«i* 


UCBRERP 

"X'20'ii- RESIDENT ERROR ROUTINE 


•••X «••• 


UCBINHIO 

"X»10»"- INHIBIT HIO FROM SVC 33 


• • • • x»• • 


UCBSWAPF 

w X f 08 ,n - WITH BIT SET, THE DEVICE IS 

ABLE TO BE SWAPPED 


• ••• lit! 


UCBERLOG 

"X* 04* •*- INDICATES PRESENCE OF AN ERROR 
LOG IN A DEVICE 


(•It • • 1 • 


UCBDYNPH 

n X*02***— IF 1,DYNAMIC PATHING AVAILABIL¬ 
ITY IS AN OPTIONAL FEATURE FOR THIS 
DEVICE 


. « . . (111 


UCBRALOC 

"X'Ol"*- ALLOCATIONS TO THIS DEVICE ARE 
RESTRICTED 

6 

(6) CHARACTER 

1 

UCBRV041 

RESERVED 

7 

(7) BITSTRING 

1 

UCBFL7 

MISCELLANEOUS USAGE FLAGS 


1 . 


UCBMASGN 

"X'80*" MULTI-SYSTEM ASSIGN DONE 


• X•• 


UCBSSPND 

"X'40»" SUSPENDED CHANNEL PROGRAM 


• •1* * • • t 


UCBMIHDF 

"X'20'" MIH DOM FLAG. IF ON, MIH MESSAGE 
TO BE DOM'ED. 


•••X ti•« 


UCBESIO 

"X‘10'" IF ON, IECVESIO HAS A REQUEST IN 
PROGRESS TO THIS DEVICE. THIS BIT ON 

WITH UCBQISCE WILL CAUSE I/O TO BE 
QUEUED. MAPPING CHANGED FROM X'01' TO 
X'10*. 

8 

(8) SIGNED 

2 

UCBCCWOF 

OFFSET TO CCW PREFIX 

10 

(A) BITSTRING 

2 

UCBPMSK 

PATH MASK FOR MESSAGES ISSUED 


UCB 

332 


MVS/370 Debug Hdbk Vol 5 


UCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 





Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


12 

(C) SIGNED 

2 

UCBMFCNT 

MEASUREMENT FACILITIES TOTAL DEVICE SIO 
COUNT. DURING NIP UCB INITIALIZATION, 
USED FOR PREVIOUSLY TESTED INDICATOR. 

14 

(E) SIGNED 

2 

UCBASID 

ASID OF THE MEMORY TO WHICH THIS DEVICE 
IS ALLOCATED EXCEPT FOR UNALLOCATED 

TAPE. FOR UNALLOCATED TAPE, ASID OF THE 
LAST MEMORY TO WHICH THIS DEVICE WAS 
ALLOCATED. 

16 

(10) BITSTRING 

1 

UCBMIHTI 

MISSING INTERRUPT HANDLER BYTE 


1 • • « « * » « 


UCBMIHSF 

"X*80'"- MISSING INTERRUPT HANDLER UCB 
SCAN FLAG 


• 1 • • • « « » 


UCBMIHPB 

"X'AO"'- WITH BIT SET, MISSING INTERRUPT 
HANDLER CHECKING OF DEVICE IS PERMANENT¬ 
LY BYPASSED 


••X* •••• 


UCBMIHTI 

"X'20 ,n - WITH BIT SET, MISSING INTERRUPT 
HANDLER CHECKING OF DEVICE IS TEMPORAR¬ 
ILY BYPASSED 


• ••X *« * • 


UCBMIHT2 

"X'lO*"- WITH BIT SET, MISSING INTERRUPT 
HANDLER CHECKING OF DEVICE IS TEMPORAR¬ 
ILY BYPASSED 


• ••« 1 • • • 


UCBI0QRP 

«X*08 ,n - PENDING I/O REQUEST CONDITION 


• ••• lit* 


UCBMIHST 

"X'04*"- ucb ADDRESS TEMPORARILY MOVED 

TO MIH SECONDARY TABLE 


■ ••• • • X • 


UCBMIHIO 

"X'02*"- I/O RESTART FUNCTION SCHEDULED 
BY MIH 


• ••• • • * X 


UCBPGDEV 

"X'Ol'"- device IS BEING USED FOR PAG¬ 
ING. 

17 

(11) CHARACTER 

3 

UCBWTOID 

WTO MESSAGE IDENTIFIER 

20 

(14) ADDRESS 

4 

UCBDDT 

ADDRESS OF DEVICE-DEPENDENT TABLE ASSO¬ 
CIATED WITH UCB 

24 

(18) ADDRESS 

4 

UCBCLEXT 

POINTER TO DEVICE CLASS EXTENSION 

28 

(1C) SIGNED 

2 

UCBCUBSY 

CONTROL UNIT BUSY COUNTER. 

30 

(IE) SIGNED 

2 

UCBDEBSY 

DEVICE BUSY COUNTER. 

32 

(20) ADDRESS 

4 

UCBITFWA 

INTERCEPT WORK AREA ADDRESS 


UCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


UCB 

Data Area Descriptions 333 






Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME_DESCRIPTIOl 


MAGNETIC TAPE 
UCB EXTENSION 

THIS EXTENSION IS POINTED TO BY THE UCBXTN FIELD OF THE 
UCB AND IS NOT CONTIGUOUS TO THE UCB. 


0 (0) STRUCTURE 0 UCBMT , UCBXTN -> UCBMT 

0 (0) SIGNED 2 UCBCTD SERIAL NUMBER IN BINARY OF TAPE DRIVE 

UPON WHICH THE VOLUME WAS CREATED 

2 (2) SIGNED 1 UCBTRT TEMPORARY READ ERROR THRESHOLD (IF 0, 

EVA IS NOT IN EFFECT). A BINARY NUMBER 
FROM 1 THROUGH 255 AS SELECTED AT SYSGEN 
TIME ON THE SCHEDULR MACRO BY 
EVA=(N1,N2) WHERE N1 = TEMPORARY READ 
ERROR THRESHOLD. 

3 (3) SIGNED 1 UCBTWT TEMPORARY WRITE ERROR THRESHOLD (IF 0, 

EVA IS NOT IN EFFECT). A BINARY NUMBER 
FROM 1 THROUGH 255 AS SELECTED AT SYSGEN 
TIME ON THE SCHEDULR MACRO BY 
EVA a (Nl»N2) WHERE N2 = TEMPORARY WRITE 
ERROR THRESHOLD. 

4 (4) SIGNED 1 UCBTR THE NUMBER (BINARY) OF TEMPORARY READ 

ERRORS THAT HAVE OCCURRED 

4 (4) BITSTRING 1 UCBMTFL1 MSGDISP DISMOUNT REQUEST 

1. UCBMTDSM "X'80 ,n - DISP=D (DISMOUNT) 

.1. UCBMTKEP "X'40"»- DISP=K (KEEP) 

..1. UCBMTRET "X'20'"- DISP=R (RETAIN) 

5 (5) SIGNED 1 UCBTW THE NUMBER (BINARY) OF TEMPORARY WRITE 

ERRORS THAT HAVE OCCURRED 

6 (6) SIGNED 2 UCBSIO THE NUMBER (BINARY) OF START I/O OPER¬ 

ATIONS THAT HAVE OCCURRED 

8 (8) SIGNED 1 UCBPR THE NUMBER (BINARY) OF PERMANENT READ 

ERRORS THAT HAVE OCCURRED 

9 (9) SIGNED 1 UCBPW THE NUMBER (BINARY) OF PERMANENT WRITE 


UCB 

334 


MVS/370 Debug Hdbk Vol 5 


UCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 









Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 

ERRORS THAT HAVE OCCURRED 


10 

(A) 

CHARACTER 

6 

UCBSER 

USED FOR TAPE DRIVES THAT HAVE MESSAGE 
DISPLAY USAGE DURING DISMOUNT PROCESSING 
ONLY SERIAL OF DISMOUNTED VOLUME 

10 

(A) 

SIGNED 

1 

UCBNB 

THE NUMBER (BINARY) OF NOISE BLOCKS THAT 
HAVE BEEN ENCOUNTERED 

11 

(B) 

CHARACTER 

1 

UCBMS 

MODE SET OPERATION CODE FOR DATA BLOCKS 


ON A 3420 MAGNETIC TAPE UNIT 


12 

(C) SIGNED 

2 

UCBERG 

THE NUMBER (BINARY) OF 
HAVE BEEN ENCOUNTERED 

ERASE GAPS THAT 

14 

(E) SIGNED 

2 

UCBCLN 

THE NUMBER (BINARY) OF 
THAT HAVE OCCURRED 

CLEANER ACTIONS 


OPTICAL CHARACTER READER (3886) 

UCB EXTENSION 

THIS EXTENSION IS POINTED TO BY THE UCBXTADR FIELD OF THE 
UCB AND IS NOT CONTIGUOUS TO THE UCB. 


1 .—. .—. ... 1 

0 

(0) STRUCTURE 

0 

UCBOCR 

, UCBXTADR -> UCBOCR 

0 

(0) CHARACTER 

4 

UCBFRID 

CURRENT FORMAT RECORD ID (FRID) LOADED 

4 

1- 

(4) HEX 

4 

UCBRDATA 

COMMAND DATA 


3540 DEVICE 
UCB EXTENSION 

THIS EXTENSION IS POINTED TO BY THE UCBXTADR FIELD OF THE 
UCB AND IS NOT CONTIGUOUS TO THE UCB. 


1 _ 1 


0 

(0) STRUCTURE 

0 

UCB3540X 

, UCBXTADR -> UCB3540X 

0 

(0) CHARACTER 

6 

UCBVLSER 

3540 VOLID 


UCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


UCB 

Data Area Descriptions 335 











Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS 

TYPE LENGTH 

NAME 

DESCRIPTION 

6 

(6) BITSTRING 

1 UCBDKBYT 

FLAG BYTE 



1 • • * •••• 


UCBDKAMX 

"X»80 ,n - IBM-SUPPLIED DISKETTE READER, 
DISKETTE WRITER OR COPY/RESTORE UTILI¬ 
TIES ARE USING THIS 3540 DEVICE 


• X•• «••• 


UCBVLVER 

■X'40'"- VOLUME VERIFICATION IS REQUIRED 
FOR CERTAIN INTERVENTION REQUIRED CONDI¬ 
TIONS WHILE 3540 DISKETTE UTILITIES ARE 
USING THE DEVICE 


••X* •••• 


UCBRV067 

"X^O^C'X'"- RESERVED 


...1 _ 


UCBRV068 

"X'lO'^C'X'"- RESERVED 


_ 1... 


UCBRV069 

"X'OS'^C'X'"- RESERVED 


.1.. 


UCBRV070 

n X'04',,C'X ,n - RESERVED 


.1. 


UCBRV071 

"X , 02’,,C'X ,n - RESERVED 


.1 


UCBRV072 

"X'OIS.C'X'"- RESERVED 

7 

(7) CHARACTER 

1 

UCBRV073 

RESERVED 

3800 

DEVICE 




UCB 

EXTENSION 




THIS EXTENSION IS POINTED 

TO 

BY THE UCBXTADR FIELD OF THE 

UCB AND IS NOT CONTIGUOUS 

TO 

THE UCB. 



0 

(0) STRUCTURE 

0 

UCB3800X 

, UCBXTADR -> UCB3800X 

0 

(0) BITSTRING 

1 

UCBOPTNS 

OPTIONAL FEATURES INSTALLED ON PRINTER 


1111 .... 


UCBMDLBT 

"X'FO'"- MODEL 


• * • • X • • • 


UCBRV055 

"X'OS’^C'X"*- RESERVED 


• ••• •X«• 


UCBRV056 

"X'OA',,C'X'"- RESERVED 


.1. 


UCBBRSTR 

n X «02 ,n — BURSTER/TRIMMER/STACKER 


.1 


UCBRV083 

"X'Ol'^C'X'"- RESERVED 

1 

(1) SIGNED 

1 

UCBCGMNO 

NUMBER OF WRITEABLE CHARACTER GENERATION 
MODULES 

2 

(2) BITSTRING 

1 

UCBGRAFS 

GRAPHIC CHARACTER FLAG BYTE 


X • • • •••• 


UCBRV046 

"X'80',,C , X ,B - RESERVED 


• X•• •••• 


UCBRV047 

"X'40»,,C'X'"- RESERVED 


••X* •••• 


UCBRV048 

”X'20',,C'X ,W - RESERVED 


• ••1 •••• 


UCBRV049 

"X'lO'^C'X'"- RESERVED 


*••• X • •• 


UCBGRAF0 

n X'08 ,n - WCGM 0 HAS BEEN MODIFIED BY A 


UCB 

336 


MVS/370 Debug Hdbk Vol 5 


UCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 
















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 





GRAPHIC CHARACTER MODIFICATION 



• • • t 

.1. . 

UCBGRAF1 

"X*04* n - WCGM 1 HAS BEEN MODIFIED 
GRAPHIC CHARACTER MODIFICATION 

BY 

A 

• 1 • • 

. .i. 

UCBGRAF2 

"X , 02 ,M - WCGM 2 HAS BEEN MODIFIED 
GRAPHIC CHARACTER MODIFICATION 

BY 

A 

1 • • • 

.. .i 

UCBGRAF3 

■X*01»"- WCGM 3 HAS BEEN MODIFIED 
GRAPHIC CHARACTER MODIFICATION 

BY 

A 

(3) 

BITSTRING 

1 UCBACTIV 

ACTIVE FEATURES 



1... 

• 1 4 • 

UCBRV057 

"X , 80 , ,,C , X ,M - RESERVED 



.1. . 

• •44 

UCBRV058 

w X'A0 , ,,C , X»"- RESERVED 



. .1. 

4 4 4 4 

UCBRV059 

"X^O'^C'X'"- RESERVED 



.. .1 

4 4 4 4 

UCBRV060 

"X'10',,C'X'"- RESERVED 



1 • • 

1. .. 

UCBRV061 

"X'OS'^C'X"*- RESERVED 



• * • • 

.1. . 

UCBRV062 

"X , 04 , ,,C , X 1 *- RESERVED 



• • • i 

. .1. 

UCBRV063 

W X'02' , ,C'X ,n - RESERVED 



• • • • 

.. .1 

UCBBRSTA 

"X' 01 RESERVED 




4 

(4) 

CHARACTER 

4 

UCBCGMID 

FOUR ONE-BYTE ID'S FOR CHARACTER MODULES 
LOADED IN WRITEABLE CHARACTER GENERATION 
MODULES (WCGM'S) 

8 

(8) 

CHARACTER 

4 

UCBCHAR1 

NAME OF FIRST TRANSLATE TABLE 

12 

(C) 

CHARACTER 

4 

UCBCHAR2 

NAME OF SECOND TRANSLATE TABLE 

16 

(10) 

CHARACTER 

4 

UCBCHAR3 

NAME OF THIRD TRANSLATE TABLE 

20 

(14) 

CHARACTER 

4 

UCBCHAR4 

NAME OF FOURTH TRANSLATE TABLE 

24 

(18) 

CHARACTER 

4 

UCBFCBNM 

FORMS CONTROL BUFFER (FCB) IMAGE NAME 

28 

(1C) 

CHARACTER 

4 

UCBIMAGE 

FORMS OVERLAY IMAGE IDENTIFICATION 

32 

(20) 

SIGNED 

2 

UCBLDATA 

LOST DATA PAGE COUNT 

34 

(22) 

SIGNED 

2 

UCBPGID 

ID OF THE LAST FUSED PAGE FOR SYSTEM 
RESTART OR PAGE AT THE TRANSFER STATION 
FOR CANCEL KEY 

36 

(24) 

ADDRESS 

4 

UCBMDRBF 

MISCELLANEOUS DATA RECORDING (MDR) BUFF¬ 
ER ADDRESS 


UCB 

LC28-1389-0 <c) Copyright IBM Corp. 1980, 1985 


UCB 

Data Area Descriptions 337 

















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


36 

(24) SIGNED 

nrui 

1 

UCBRV075 

wuwwr\Ar • awii 

RESERVED 

37 

(25) ADDRESS 

3 

UCBMDRBA 

MDR BUFFER ADDRESS 

UNIT 

RECORD WITH 




UNIVERSAL CHARACTER SET 

(1403, 3211) 


UCB 

EXTENSION 




THIS EXTENSION IS POINTED 

TO 

BY THE UCBXTADR FIELD OF THE 

UCB AND IS NOT CONTIGUOUS 

TO 

THE UCB. 



0 

(0) STRUCTURE 

0 

UCBUCS 

, UCBXTADR -> UCBUCS 

0 

(0) CHARACTER 

4 

UCBUCSID 

UCS IMAGE IDENTIFICATION IN BUFFER 

4 

(4) BITSTRING 

1 

UCBUCSOP 

FORMAT OF UCS IMAGE IN BUFFER (0 FOR 
OPTION) 


lit! •••« 


UCBUCS01 

"X*80 ,n - UCS IMAGE IS A DEFAULT IMAGE 


• 1 • • 


UCBUCS02 

n X'40 ,n - UCS IMAGE IS IN FOLD MODE 


. .1. 


UCBRSV39 

"X^O'^C'X*"- RESERVED 


...1 _ 


UCBRSV40 

"X'lO'^C'X'"- RESERVED 


_ 1... 


UCBRSV41 

"X'OS'^C'X'"- RESERVED 


.1. . 


UCBRSV42 

"X*04*,jC'X'"- RESERVED 


• • • • • • 1 • 


UCBRSV43 

"X*02',,C'X ,W - RESERVED 


• ••• I • t 1 


UCBUCSPE 

"X'01"*- UCS IMAGE HAS PARITY ERROR 
(3211) 

5 

(5) BITSTRING 

1 

UCBFCBOP 

RESERVED (1403) OR FCB OPTIONS (3211) (0 
FOR OPTION) 


1 • • • •••• 


UCBFCB01 

"X'80*"- FCB IMAGE IS A DEFAULT IMAGE 


• X•• «••• 


UCBRSV44 

"X'^'mCX"*- reserved 


••X* 


UCBRSV45 

"X^O'^C'X'"- RESERVED 


•••X •••• 


UCBRSV46 

"X'lO'^C'X'"- RESERVED 


_11.. 


UCBFCBPS 

"X'OC*" PRINTER SPEED SETTING FOR A VAR¬ 
IABLE SPEED PRINTER 01 LOW SPEED 10 
MEDIUM SPEED 11 HIGH SPEED 


• •* X• 


UCBRSV49 

"X'02 , ,,C , X ,n - RESERVED 


•••• ••iX 


UCBFCBPE 

"X'01 ,n - FCB IMAGE HAS PARITY ERROR 


UCB 

338 


MVS/370 Debug Hdbk Vol 5 


UCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 










Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 

6 (6) HEX 1 UCBRSV51 RESERVED 

7 (7) SIGNED 1 UCBERCNT CONTAINS A COUNT OF THE ERRORS THAT HAVE 

OCCURRED. THE COUNT, WHICH MAY WRAP 
AROUND, IS WRITTEN IN STANDARD OBR 
RECORDS (ONE PER ERROR) AND IN NEW 
DEVICE-DEPENDENT OBR RECORDS (0 TO 3 PER 
ERROR) AND SERVE TO RELATE TO EACH OTHER 
THE STANDARD AND DEVICE-DEPENDENT OBR 
RECORDS THAT PERTAIN TO EACH ERROR 
(3211) 


8 

(8) 

CHARACTER 

4 

UCBFCBID 

THE FCB IMAGE IDENTIFICATION 

12 

(C) 

ADDRESS 

4 

UCBERADR 

THE ADDRESS OF THE ERP LOGOUT AREA 

16 

(10) 

CHARACTER 

2 

UCBIPGID 

IMPACT PRINTER PAGE ID FOR LAST GOOD 

PAGE AFTER LOST DATA CONDITION 

18 

(12) 

HEX 

2 

UCBPDCTO 

OFFSET TO PRINTER DEVICE CHARACTERISTICS 
TABLE (PDCT) FROM UCBUCS 

0 

(0) 

STRUCTURE 

0 

UCBPDCTA 

PRINTER DEVICE CHARACTERISTICS TABLE 
(PDCT) AREA (THE PDCT RESIDES IN THE UCS 
EXTENSION. HOWEVER, ITS ADDRESS MUST BE 
COMPUTED BY ADDING THE VALUE IN UCBPDCTO 
TO THE ADDRESS OF UCBUCS.) 

0 

(0) 

CHARACTER 

16 

UCBPDCT 

PRINTER DEVICE CHARACTERISTICS TABLE 


(PDCT), MAPPED BY MAPPING MACRO IGGPDC 


UCB 

LC28-1389-0 (c) Copyright IBM Corp 


1980, 1985 


Data Area Descriptions 


UCB 

339 







Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


CROSS REFERENCE 


NAME 

HEX 

OFFSET 

HEX 

VALUE 

NAME 

HEX 

OFFSET 

HEX 

VALUE 

NAME 

HEX 

OFFSET _ 

HEX 

VALUE 

SRTEALOC 

15 

08 

UCBASUN 

2 

80 

UCBCRHRV 

7 

08 

SRTEASCI 

2D 

04 

UCBATI 

3 


UCBCRHSN 

7 

04 

SRTEBALB 

2D 

20 

UCBATNCT 

1A 


UCBCTCAD 

18 


SRTEBNUL 

2D 

01 

UCBATRCD 

IB 

01 

UCBCTCAL 

18 


SRTEBPRV 

2D 

10 

UCBATTN 

25 

08 

UCBCTCF1 

1C 


SRTEBPUB 

2D 

08 

UCBATTP 

14 

80 

UCBCTC80 

1C 

80 

SRTEBSTR 

2D 

04 

UCBBALB 

22 

20 

UCBCTD 

0 


SRTEBSVL 

2D 

80 

UCBBASE 

28 


UCBCTLNA 

25 


SRTEBVQS 

2D 

04 

UCBBGN 

0 

00 

UCBCTLNK 

24 


SRTECHGS 

15 

40 

UCBBNUL 

22 

01 

UCBCUB 

6 

08 

SRTEDADI 

15 

01 

UCBBOX 

0 

10 

UCBCUBSY 

1C 


SRTEDMCT 

2D 

0223 

UCBBPRV 

22 

10 

UCBCURPX 

-4 

08 

SRTEFSCT 

2D 

0218 

UCBBPUB 

22 

08 

UCBDADI 

3 

01 

SRTEFSEQ 

2D 

021A 

UCBBRSTA 

3 

01 

UCBDATP 

23 

0224 

SRTEJBNR 

15 

0200 

UCBBRSTR 

0 

02 

UCBDAVV 

25 

80 

SRTEMNT 

15 

01 

UCBBSTR 

22 

04 

UCBDBUF 

2 

20 

SRTEONLI 

15 

80 

UCBBSVL 

22 

80 

UCBDCC 

1 

80 

SRTEPRES 

15 

04 

UCBBSY 

6 

80 

UCBDDRSW 

14 

01 

SRTERESV 

15 

20 

UCBBTA 

24 


UCBDDT 

14 


SRTESTAB 

2D 

0222 

UCBBTAM 

1C 

10 

UCBDEBSY 

IE 


SRTESTAT 

15 

0203 

UCBBTB 

25 


UCBDEV 

15 

0218 

SRTESYSR 

15 

02 

UCBBUSYD 

6 

80 

UCBDI 

24 


SRTEUNLD 

15 

10 

UCBCCW0F 

8 


UCBDKAMX 

6 

80 

SRTEUSER 

2D 

0226 

UCBCGMID 

4 


UCBDKBYT 

6 


SRTEVOLI 

2D 

021C 

UCBCGMNO 

1 


UCBDMC 

23 

7F 

UCB 

0 


UCBCHA 

4 


UCBDMCT 

23 


UCBACTIV 

3 


UCBCHAN 

4 


UCBDPTH 

7 

01 

UCBACTV 

6 

02 

UCBCHAR1 

8 


UCBDQDSP 

2B 

20 

UCBAF 

1 

40 

UCBCHAR2 

C 


UCBDRNO 

1C 

20 

UCBALOC 

3 

08 

UCBCHAR3 

10 


UCBDRO 

1C 

40 

UCBALTCU 

1 

02 

UCBCHAR4 

14 


UCBDSM 

13 

42 

UCBALTPH 

1 

01 

UCBCHGS 

3 

40 

UCBDSS 

25 

10 

UCBAMV 

1 

40 

UCBCHM 

8 


UCBDUC 

0 

20 

UCBAOF 

18 


UCBCHM1 

8 


UCBDUDN1 

11 

20 

UCBAOF1 

18 


UCBCLEXT 

18 


UCBDUDN2 

11 

10 

UCBA0F2 

19 


UCBCLN 

E 


UCBDVCLS 

12 


UCBAPUB 

1C 


UCBCMEXT 

0 


UCBDVPWR 

11 

01 

UCBASCI 

2D 

04 

UCBCMSEG 

0 

0200 

UCBDVSHR 

22 

80 

UCBASID 

E 


UCBCNT 

9 


UCBDHNR 

1C 

02 

UCBASNS 

7 

40 

UCBCPU 

B 


UCBDYNPH 

5 

02 


UCB UCB 

340 MVS/370 Debug Hdbk Vol 5 LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


HEX HEX HEX HEX HEX HEX 


NAME OFFSET 

VALUE 




OFFSET VALUE 

UCBD1600 

10 

04 

UCBGRAF3 

2 

01 

UCBMIHTI 

10 

20 

UCBD6250 

10 

02 

UCBHALI 

3 

02 

UCBMIHT2 

10 

10 

UCBENVRD 

1 

08 

UCBH0LD 

25 

04 

UCBMMSGP 

0 

04 

UCBERADR 

C 


UCBHPDV 

3 

01 

UCBMONT 

0 

01 

UCBERCNT 

7 


UCBICNCB 

1C 


UCBMOUNT 

23 

80 

UCBERG 

C 


UCBID 

2 


UCBMS 

B 


UCBERLOG 

5 

04 

UCBIMAGE 

1C 


UCBMT 

0 


UCBERPC 

2C 

10 

UCBIN 

C 

80 

UCBMTDSM 

4 

80 

UCBESIO 

7 

10 

UCBINHIO 

5 

10 

UCBMTFL1 

4 


UCBESV 

2C 

80 

UCBINRLN 

20 


UCBMTKEP 

4 

40 

UCBESVC 

2C 

20 

UCBIOQ 

-4 


UCBMTPXP 

C 

08 

UCBESVE 

2C 

08 

UCBI0QRP 

10 

08 

UCBMTRET 

4 

20 

UCBETI 

0 


UCBIORST 

7 

80 

UCBNALOC 

1 

04 

UCBEVA 

2C 

40 

UCBIOSBA 

18 


UCBNAME 

D 


UCBEXTP 

15 


UCBIPGID 

10 


UCBNB 

A 


UCBEXTPT 

14 


UCBIRB 

1C 


UCBNEXP 

2C 


UCBFCBID 

8 


UCBIRBA 

ID 


UCBNLTP 

2B 

80 

UCBFCBNM 

18 


UCBIRLN 

20 


UCBNOTRC 

6 

08 

UCBFCBOP 

5 


UCBITF 

14 

10 

UCBNOTRD 

6 

40 

UCBFCB01 

5 

80 

UCBITFWA 

20 


UCBNRY 

6 

40 

UCBFCBPE 

5 

01 

UCBIVRR 

14 

04 

UCBNSLTP 

2B 

40 

UCBFCBPS 

5 

OC 

UCBIVRS 

14 

08 

UCBNSRCH 

5 

80 

UCBFLA 

6 


UCBJBNR 

0 


UCBOB 

0 


UCBFLB 

7 


UCBJES3 

0 

40 

UCBOCR 

0 


UCBFLC 

14 


UCBLCI 

A 


UCBOFMCR 

18 

80 

UCBFLP1 

5 


UCBLDATA 

20 


UCBOFNL 

18 

20 

UCBFL1 

6 

0206 

UCBLDNCA 

20 


UCBOFPTR 

18 

10 

UCBFL2 

15 

0206 

UCBLDNCB 

21 


UCBOFSP 

18 

40 

UCBFL4 

25 


UCBLOCK 

-8 


UCBOIP 

1C 

80 

UCBFL5 

1 


UCBMASGN 

7 

80 

UCBOLDSM 

0 

08 

UCBFL6 

2 


UCBMAT 

25 

02 

UCBOLTEP 

IB 

80 

UCBFL7 

7 


UCBMDISP 

2 

40 

UCBONLI 

3 

80 

UCBFRID 

0 


UCBMDLBT 

0 

FO 

UCBOPEN 

1A 


UCBFSCT 

18 


UCBMDRBA 

25 


UCBOPTNS 

0 


UCBFSEQ 

1A 


UCBMDRBF 

24 


UCBOUT 

C 

40 

UCBFSER 

24 


UCBMFCNT 

C 


UCBPDCT 

0 


UCBGCB 

IB 


UCBMIHDF 

7 

20 

UCBPDCTA 

0 


UCBGRAF 

1C 


UCBMIHIO 

10 

02 

UCBPDCTO 

12 


UCBGRAFS 

2 


UCBMIHPB 

10 

40 

UCBPGDEV 

10 

01 

UCBGRAFO 

2 

08 

UCBMIHSF 

10 

80 

UCBPGFL 

22 

40 

UCBGRAF1 

2 

04 

UCBMIHST 

10 

04 

UCBPGID 

22 


UCBGRAF2 

2 

02 

UCBMIHTI 

10 


UCBPMSK 

A 



UCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


UCB 

Data Area Descriptions 341 




Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


NAME 

HEX 

OFFSET 

HEX 

VALUE 

NAME 

HEX 

OFFSET 

HEX 

VALUE 

NAME 

HEX 

OFFSET 

HEX 

VALUE 

UCBPPA 

8 

80 

UCBRSV40 

4 

10 

UCBRV049 

2 

10 

UCBPPB 

8 

20 

UCBRSV41 

4 

08 

UCBRV055 

0 

08 

UCBPR 

8 


UCBRSV42 

4 

04 

UCBRV056 

0 

04 

UCBPRES 

3 

04 

UCBRSV43 

4 

02 

UCBRV057 

3 

80 

UCBPRFX 

-4 

0200 

UCBRSV44 

5 

40 

UCBRV058 

3 

40 

UCBPRSRS 

22 

20 

UCBRSV45 

5 

20 

UCBRV059 

3 

20 

UCBPSNS 

6 

10 

UCBRSV46 

5 

10 

UCBRV060 

3 

10 

UCBPST 

6 

20 

UCBRSV49 

5 

02 

UCBRV061 

3 

08 

UCBPTHO 

8 

CO 

UCBRSV51 

6 


UCBRV062 

3 

04 

UCBPTH1 

8 

30 

UCBRSV65 

18 

08 

UCBRV063 

3 

02 

UCBPUB 

C 

20 

UCBRSV66 

18 

04 

UCBRV066 

1C 


UCBPW 

9 


UCBRSV67 

18 

02 

UCBRV067 

6 

20 

UCBPXST 

-200 

01F8 

UCBRSV68 

18 

01 

UCBRV068 

6 

10 

UCBQISCE 

6 

01 

UCBRSV69 

19 

80 

UCBRV069 

6 

08 

UCBRALOC 

5 

01 

UCBRSV70 

19 

40 

UCBRV070 

6 

04 

UCBRDATA 

4 


UCBRSV71 

19 

20 

UCBRV071 

6 

02 

UCBRDYQ 

20 


UCBRSV72 

19 

10 

UCBRV072 

6 

01 

UCBRDYQA 

21 


UCBRSV73 

19 

08 

UCBRV073 

7 


UCBRERP 

5 

20 

UCBRSV74 

19 

04 

UCBRV075 

24 


UCBRESV 

3 

20 

UCBRSV75 

19 

02 

UCBRV076 

1C 

40 

UCBRESVH 

7 

10 

UCBRSV76 

19 

01 

UCBRV077 

1C 

20 

UCBRESVP 

25 

20 

UCBRSV77 

IB 

40 

UCBRV078 

1C 

10 

UCBRES1B 

2A 


UCBRSV78 

IB 

20 

UCBRV079 

1C 

08 

UCBREW 

C 

10 

UCBRSV79 

IB 

10 

UCBRV080 

1C 

04 

UCBRIPND 

IB 

04 

UCBRTIAC 

IB 

08 

UCBRV081 

1C 

02 

UCBRLN 

24 


UCBRVDEV 

11 

08 

UCBRV082 

1C 

01 

UCBRPND 

1C 

04 

UCBRV006 

2B 

08 

UCBRV083 

0 

01 

UCBRPS 

11 

10 

UCBRV007 

2B 

04 

UCBRNTAU 

11 

08 

UCBRR 

11 

20 

UCBRV008 

2B 

02 

UCBSAP 

6 

04 

UCBRRP 

25 

01 

UCBRV009 

2B 

01 

UCBSASK 

1 

20 

UCBRSV04 

3 

80 

UCBRV014 

8 

08 

UCBSATI 

27 


UCBRSV05 

3 

40 

UCBRV015 

8 

04 

UCBSER 

A 


UCBRSV06 

3 

20 

UCBRV016 

8 

02 

UCBSFLS 

6 


UCBRSV07 

3 

10 

UCBRV017 

8 

01 

UCBSHAR 

22 

02 

UCBRSV08 

3 

08 

UCBRV029 

C 

01 

UCBSHRUP 

5 

40 

UCBRSV09 

3 

04 

UCBRV039 

1C 

01 

UCBSIO 

6 


UCBRSV10 

12 

02 

UCBRV040 

18 


UCBSKPF6 

IB 

02 

UCBRSV11 

12 

01 

UCBRV041 

6 


UCBSNS 

20 


UCBRSV20 

2C 

04 

UCBRV042 

ID 


UCBSNSCT 

4 


UCBRSV21 

2C 

02 

UCBRV046 

2 

80 

UCBSPA 

8 

40 

UCBRSV22 

2C 

01 

UCBRV047 

2 

40 

UCBSPB 

8 

10 

UCBRSV39 

4 

20 

UCBRV048 

2 

20 

UCBSPST 

7 

20 

UCB 








UCB 

342 MVS/370 Debug Hdbk Vol 

5 LC28-1389 

-0 (c) 

Copyright IBM Corp. 1980 

, 1985 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


NAME 

HEX 

OFFSET 

HEX 

... VALUE 

NAME 

HEX 

OFFSET 

HEX 

VALUE 

NAME _ 

HEX 

OFFSET 

HEX 

VALUE 

UCBSQC 

24 


UCBUNTYP 

13 


UCB20PTO 

11 

80 

UCBSSPND 

7 

40 

UCBUPM 

1C 

08 

UCB20PT1 

11 

40 

UCBSTAB 

22 


UCBURINP 

0 

02 

UCB20PT2 

11 

20 

UCBSTART 

18 


UCBUSER 

26 


UCB20PT3 

11 

10 

UCBSTAT 

3 


UCBUSIN6 

6 

20 

UCB20PT4 

11 

08 

UCBSTI 

1 


UCBVALPH 

7 

02 

UCB20PT5 

11 

04 

UCBSTND 

2 

FF 

UCBVHRSN 

C 

02 

UCB20PT6 

11 

02 

UCBSWAPF 

5 

08 

UCBVLPWR 

11 

02 

UCB20PT7 

11 

01 

UCBSYSR 

3 

02 

UCBVLSER 

0 


UCB2400 

13 

01 

UCBTBYT1 

10 


UCBVLVER 

6 

40 

UCB3CHAR 

12 

04 

UCBTBYT2 

11 


UCBVOLI 

1C 


UCB3C0MM 

12 

40 

UCBTBYT3 

12 


UCBV0PT 

2C 


UCB3CTC 

12 

41 

UCBTBYT4 

13 


UCBVORSN 

C 

04 

UCB3DACC 

12 

20 

UCBTEB 

1C 


UCBVRDEV 

0 

80 

UCB3DISP 

12 

10 

UCBTFL1 

2B 


UCBVSDR 

1 

10 

UCB3TAPE 

12 

80 

UCBTFL1S 

2B 

18 

UCBVTOC 

18 


UCB3UREC 

12 

08 

UCBTICBT 

14 

02 

UCBWAA 

14 

40 

UCB3036 

13 

0D 

UCBTR 

4 


UCBWDAV 

25 

40 

UCB3211 

13 

09 

UCBTRT 

2 


UCBWGT 

C 


UCB3263 

13 

11 

UCBTW 

5 


UCBWTOID 

11 


UCB3400 

13 

03 

UCBTWT 

3 


UCBXTADR 

18 


UCB3430 

2B 

10 

UCBTYP 

10 


UCBXTN 

2C 


UCB3480 

13 

80 

UCBUA 

5 


UCBXTNB 

2D 


UCB3540X 

0 


UCBUCS 

0 


UCB1FEA0 

10 

80 

UCB3791L 

13 

FI 

UCBUCSID 

0 


UCB1FEA1 

10 

40 

UCB3800 

13 

0E 

UCBUCSOP 

4 


UCB1FEA2 

10 

20 

UCB3800X 

0 


UCBUCS01 

4 

80 

UCB1FEA3 

10 

10 

UCB3838 

13 

4C 

UCBUCS02 

4 

40 

UCB1FEA4 

10 

08 

UCB3895 

13 

19 

UCBUCSPE 

4 

01 

UCB1FEA5 

10 

04 

UCB42AD1 

13 

11 

UCBUDE 

14 

20 

UCB1FEA6 

10 

02 

UCB4248 

13 

13 

UCBUNLD 

3 

10 

UCB1FEA7 

10 

01 

UCB7443 

13 

3D 


UCB 

LC28-1389-0 (c) Copyright IBM Corr- 1980, 1985 


UCB 

Data Area Descriptions 343 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


-U-C.BCX 


Common Name : UCB Tape Class Extension 

Macro ZD : IECUCBCX 

DSECT Name : UCBCX 

ement for the common section. 

Created by : At SYS6EN time when ASCII=INCLUDE, and/or 
device type 3480 or 3400-9 is specified. 

Subpool and Key : Nucleus and key 0 
size : ANSI - 24 bytes and 
3480/3400-9 - 26 bytes (if SYSGENed) 

Pointed to by : UCBCLEXT field in the UCB common extension 
Serialization : None 

Function : The UCBCX maps the UCB Tape Class Extension. The ANSI portion 
contains V0L1 header label information across OPENS when there is 
no reverification. The 3480/3400-9 portion contains volume errror 
statistics and positioning information. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) STRUCTURE 

44 

UCBCX 

UCB TAPE CLASS EXTENSION 

0 

(0) CHARACTER 

18 

UCBCXANS 

ANSI PORTION OF EXTENSION 

0 

(0) CHARACTER 

1 

UCBCXACC 

V0L1 ACCESSIBILITY CODE FROM LABEL 

THE UCB EXIT FLAGS (UCBCXFL1) ARE SET WITH AN AUDIT TRAIL FOR 

ANSI EXIT ACTIVITY DURING VOLUME VERIFICATION. 

1 

(1) BITSTRING 

1 

UCBCXFL1 

FLAG BYTE 


1 • * * •••« 


UCBCXVAL 

VALIDATION EXIT ENTERED 


tl<i 


UCBCXSUP 

SUPPRESS LBL VALIDATION CHECK 

2 

(2) CHARACTER 

1 

UCBCXVER 

V0L1 LABEL-STANDARD VERSION 

3 

(3) BITSTRING 

1 


RESERVED FOR FUTURE USE 

4 

(4) CHARACTER 

14 

UCBCXOWN 

V0L1 OWNER IDENTIFICATION 


UCBCX 

344 


MVS/370 Debug Hdbk Vol 5 


UCBCX 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 









Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


18 

(12) 

CHARACTER 

26 

UCBCLXE 

3480 PORTION OF EXTENSION 

18 

(12) 

CHARACTER 

2 

UCBCXERG 

NO. OF ERASE GAPS 

20 

(14) 

CHARACTER 

2 

UCBCXCLN 

NO. OF CLEANER ACTIONS 

22 

(16) 

CHARACTER 

2 

UCBCXRD 

READ FWD DATA CHECKS 

24 

(18) 

CHARACTER 

2 

UCBCXRDB 

READ BKWD DATA CHECKS 

26 

(1A) 

CHARACTER 

2 

UCBCXWR 

WRITE DATA CHECKS 

28 

(1C) 

CHARACTER 

3 

UCBCXMBR 

READ BYTES PROCESSED!*4K) 

31 

(IF) 

CHARACTER 

3 

UCBCXMBW 

WRT BYTES PR0CESSED(*4K) 

34 

(22) 

CHARACTER 

2 

UCBCXRS6 

RESERVED 

36 

(24) 

CHARACTER 

4 

UCBCXBLK 

BLOCKID SAVE AREA 

40 

(28) 

CHARACTER 

4 

UCBCXTUS 

SERIAL NO OF TAPE DRIVE 


UCBCX 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


UCBCX 

Data Area Descriptions 345 







Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


UCBTVP 


Common Name : Unit Control Block Type Bytes 

Macro ID : UCBTYPES 

DSECT Name : None 

Created by : SYSGEN 

Subpool and Key : Nucleus and key 0 

Size i Variable 

Pointed to by : None 

Serialization : None 

Function : The UCB describes the characteristics of a device to 
the I/O supervisor and is used by the job scheduler during 
allocation of the device. There is a UCB for each device 
attached to the system. 

X. NOTE - This is a mapping of the UCBTYP field of the UCB 

(UCB + X'10* through UCB + X*14»). The names defined 
are for mapping use only. 

OFFSET S_HEI_ LENGTH NAME _ DESCRIPTION 


0 

(0) 

STRUCTURE 

n 

UCBTYP 

0 

(0) 

HEX 

16 

UCBCOMMN 

16 

(10) 

BITSTRING 

4 

UCBTYP 


Unit Record Device Class X'08' 


Unit Record Model bits 

"X'FO'" I/O Supervisor flags 

"X»80*" Reserved bit 

"X'^O’" Overrunnable device 

"X'20 ,w If ON burst mode. If OFF byte 

mode 

"X'10 ,n Data chaining 

"X'0F' n Model code field none defined 

Unit Record Option flags 


(10) BITSTRING 

i 

1111 .... 

UR1HEXF0 

1 • • » •••• 

UR1HEX80 

. 1 • • * « * * 

UR1HEX40 

• •1* •••• 

UR1HEX20 

• * « 1 • • • • 

UR1HEX10 

.... 1111 

UR1HEX0F 

(11) BITSTRING 

1 


UCBTYP 

346 MVS/370 Debug Hdbk Vol 5 


UCBTYP 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME 



1 • • • •••• 


UR2HEX80 


ele. 111. 


UR2HEX4E 


• tli 


UR2HEX20 


• ••1 •••• 


UR2HEX10 


• • I 


UR2HEX01 

18 

(12) BITSTRING 

i 



_ 1... 


UR3HEX08 

19 

(13) BITSTRING 

i 



• ••« • • * 1 


UR4HEX01 


• ••• • • 1 • 


UR4HEX02 


■ «• • • 1 •• 


UR4HEX04 


• ••• • 1 • 1 


UR4HEX05 


.11. 


UR4HEX06 


.Ill 


UR4HEX07 


. . • . 1. . . 


UR4HEX08 



1. .1 

UR4HEX09 


1.1. 

UR4HEX0A 


1.11 

UR4HEX0B 


11.. 

UR4HEX0C 


11.1 

UR4HEX0D 


111. 

UR4HEX0E 


1111 

UR4HEX0F 

.. .1 

• « • • 

UR4HEX10 

. . .1 

.. .1 

UR4HEX11 

.. .1 

. .1. 

UR4HEX12 

.. .1 

. .11 

UR4HEX13 

.. .1 

.1. . 

UR4HEX14 

. . .1 

.1.1 

UR4HEX15 

.. .1 

.11. 

UR4HEX16 

...1 

.111 

UR4HEX17 

.. .1 

1. .. 

UR4HEX18 

.. .1 

1. .1 

UR4HEX19 

...1 

1.1. 

UR4HEX1A 

.. .1 

1.11 

UR4HEX1B 

.. .1 

11.. 

UR4HEX1C 

.. .1 

11.1 

UR4HEX1D 

.. .1 

111. 

UR4HEX1E 


PESCR1PTION 

"X , 80 ,n Universal character set (UCS) 
"X , 4E ,n Reserved bits 
"X*20 * n 3525 two-line print feature 
n X'10 ,w 3525 multi-line print feature 
"X'01 ,n Card image (binary mode) 

Device Class bits 
"X'08'" Unit Record devices 
Unit Record device unit code byte 
"X'01*" 2540 Card Reader 
"X'02 ,n 2540 Card Punch 
"X'04' n 2501 Card Reader 
n X*05* n 2520 Card Read Punch 
"X'063505 Card Reader 
"X'07’" Reserved 

"X»08 ,n 1403 Printer (Models Nl, 2, 7) 
and 1404 Printer (Continuous form sup¬ 
port only) 

"X'09'" 3211 Printer 

n X'0A ,n 1443 Printer (Model Nl only) 

"X'OB'" 3203 Printer 

"X'OC*" 3525 Card Punch 

"X'OD'" Reserved 

"X'0E ,n 3800 Printing Subsystem 

"X'OF'" Reserved 

"X'10'" 2671 Paper Tape Reader 

W X , 11 ,W 4245 Printer 

"X'12'" Reserved 

"X'13' n 4248 Printer 

"X'14 ,n Reserved 

n X'15'" Reserved 

"X'16'" 3890 Document Processor 

n X'17»" 3886 Optical Character Reader 

"X'18*" 2495 Tape Cartridge Reader 

"X'19 ,n 3895 Document Reader/Inscriber 

"X'lA*" 1285 Optical Reader 

"X'lB ,n 1287 Optical Reader 

"X'lC'" 1288 Optical Page Reader 

w X'lD ,n 1419 Magnetic Character Reader, 

Primary Control Unit 

"X'lE ,n 1419 Magnetic Character Reader 
or 1275 Optical Reader Sorter, Secondary 


UCBTYP 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


UCBTYP 

Data Area Descriptions 347 







Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 





Control 

Unit 


.. .1 

1111 

UR4HEX1F 

"X'1F»" 

1275 

Optical Reader Sorter* Pri 




mary Control 

Unit 

..1. 

• • • • 

UR4HEX20 

"X 1 20 * n 

1052 

Console Printer-keyboard 

..1. 

.. .1 

UR4HEX21 

n X * 21* n 

2150 

Console 

..1. 

. .1. 

UR4HEX22 

"X'22 ,n 

3210 

Console Printer-keyboard 

. .1. 

. .11 

UR4HEX23 

n X»23«n 

3215 

Console Printer-keyboard 

..11 


UR4KEX30 

"X'30 ,n 

3215 

Printer 

.1.. 

. .1. 

UR4HEX42 

n X , 42 ,n 

3851 

Mass Storage Facility 

.1.. 

.1.. 

UR4HEX44 

"X’44*" 

3540 

Diskette 

. 1 .. 

11.. 

UR4HEX4C 

"X*4C*" 

3838 

Array Processor 


Magnetic Tape Device Class - X'80' 


0 

(0) 

BITSTRING 

1 


Magnetic Tape Model bits- 


1111 

• • • • 


MT1HEXF0 

n X 1 F0 1n 1/0 Supervisor flags 


1... 

♦ • • • 


MT1HEX80 

"X^O'" Reserved bit 


.1.. 

• • • « 


MT1HEX40 

"X'40 ,n Overrunnable device 


..1. 

« • • • 


MT1HEX20 

n X*20If ON burst mode. If OFF byte 
mode. 


. . .1 

• t • • 


MT1HEX10 

"X'lO*" Data Chaining 


• • • • 

1111 


MT1HEX0F 

"X^F'" Model Code. 


# • • • 

1111 


MT1HEX09 

"X^F 1 ” Reserved codes 


• • • « 

1... 


MT1HEX08 

"X'OS"* Reserved bit 


• • • • 

.1.. 


MT1HEX04 

n X'04 ,n 1600 BPI 


• • • • 

..1. 


MT1HEX02 

"X'02 ,n 6250 BPI 


« # • # 

...1 


MT1HEX01 

"X*01 ,n Reserved bit 

1 

(1) 

BITSTRING 

1 


Magnetic tape option flags 


1... 

« • • • 


MT2HEX80 

"X'SO*" 7-Track compatability 


.1.. 

• t • • 


MT2HEX40 

"X^O'" Data conversion 


. .1. 

• • • • 


MT2HEX20 

"X'20 ,n Dual Density (800/1600 BPI) 


.. .1 

• • • • 


MT2HEX10 

"X'10 ,n Dual Density (6250/1600 BPI) 


• • • • 

.111 


MT2HEX07 

"X'D?'" Reserved bits 

2 

(2) 

BITSTRING 

1 


Device Class byte 


1... 

♦ • • • 


MT3HEX80 

"X'80 ,n Magnetic tape class 

3 

(3) 

BITSTRING 

1 


Magnetic Class device units code byte 


« • • • 

...1 


MT4HEX01 

"X'01*" 2400 Series magnetic tape 

UCBTYP 





UCBTYP 

348 

MVS/370 Debug Hdbk 

Vol 

5 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 













Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 



.11 MT4HEX03 "X'OS'™ 3400 Series magnetic tape unit 

1. MT4HEX80 "X'80 ,w 3480 Series magnetic tape unit 


Direct Access Storage Device Class 


0 

(0) BITSTRING 
1111 .... 

i 

DA1HEXF0 


1 • • • 


DA1HEX80 


»1 •. »• • • 


DA1HEX40 


• • X • • • .. 


DA1HEX20 


•••X •••• 


DA1HEX10 


.... 1111 


DA1HEX0F 

1 

(1) BITSTRING 

1 • • * • • • • 

i 

DA2HEX80 


• la* a a a a 


DA2HEX40 


• •1* •••• 


DA2HEX20 


• ••1 •••• 


DA2HEX10 


• it* 1 • • • 


DA2HEX08 


• . 1 . ♦ 


DA2HEX04 


• It* • * 1 i 


DA2HEX04 


• ••• t • • 1 


DA2HEX04 


1... .1.. 


DA2HEX84 

2 

(2) BITSTRING 

i 

DA3HEX20 

3 

(3) BITSTRING 

i 



•••• ••• 1 


DA4HEX01 


• • • • « • 1 • 


DA4HEX02 


. 11 


DA4HEX03 


•••» «1«* 


DA4HEX03 


. 1.1 


DA4HEX03 


. 11. 


DA4HEX06 


. Ill 


DA4HEX07 


.... 1... 


DA4HEX08 


.... 1 a • 1 


DA4HEX09 

UCBTYP 

LC28-1389 

-0 (c) Copyright 

IBM 

Corp. 1980 


Direct Access Model bits 

n X'F0 ,n I/O Supervisor flags 

"X'80Reserved bit 

"X^O*" Overrunnable device 

"X'20'" If ON, burst mode. If OFF, byte 

mode. 

*»X»10'" Data chaining 

n X*0F ,B Model code field none defined 

Direct Access Optional Features byte 

"X^O'" Reserved 

"X^O'" Track overflow 

n X'20* n This device can be shared by two 
or more processors 
i , X , 10 ,n Rotational position sensing 
device 

"X*08'" Virtual DASD 
"X , 04 ,n Reserved 
™X'02 ,n Reserved 
"X'Ol*" Reserved 
"X'84 ,n Reserved bits 
Device Class bits 

n X , 20 ,n Direct Access Storage Device 

Direct Access device unit byte 

n X* 01 "* 2311 Disk storage 

"X*02'" 2301 Disk storage 

"X'03'" 2303 Disk storage 

"X'04 ,n 2302 Disk storage 

n X*05»" 2321 Disk storage 

,, X'06 ,n 2305 Fixed Head Storage Model 1 

"X*07’ n 2305 Fixed Head Storage Model 2 

"X'08'" 2314/2319 Direct Access Storage 

Facility 

"X'09'" 3330 Series Disk Storage 3330 


UCBTYP 

1985 Data Area Descriptions 349 










Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


‘SETS TYPE LENGTH NAME _ DESCRIPTION 

Model 1 or 2 and 3333 Model 1 

- 1.1. DA4HEX0A "X'OA*" 3340 Disk storage 

_ 1.11 DA4HEX0B "X'OB*" 3350 Direct Access Storage Mod¬ 
els A2, B2, and C2 

_ 11.. DA4HEX0C "X'0C' n 3375 Direct Access Storage 

_ 11.1 DA4HEX0D "X'OD'" 3330 Model 11 or 3333 Model 11 

Disk Storage 

_ 111. DA4HEX0E "X'OE'" 3380 Direct Actess Storage 











Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 

and light pen 


.111 

4 4 4 4 

GA2HEX70 

Model 1,2 Alphameric keyboard, 
light pen and programmed function key¬ 
board 

1... 

4 4 4 4 

GA2HEX80 

"X f 80 in Model 1,2 Absolute vector graph¬ 
ics only 

1. .1 

4 4 4 4 

GA2HEX90 

"X^O*" Model 1,2 Absolute vector graph¬ 
ics and programmed function keyboard 

1.1. 

4 4 4 4 

GA2HEXA0 

"X^O 1 " Model 1,2 Absolute vector graph¬ 
ics and light pen 

1.11 

4 4 4 4 

GA2HEXB0 

"X'BQ 1 " Model 1,2 Absolute vector graph¬ 
ics, programmed function keyboard, and 
light pen 

11.. 

4 4 4 4 

GA2HEXC0 

"X^O*" Model 1,2 Absolute vector graph¬ 
ics and alphameric keyboard 

11.1 

4 4 4 4 

GA2HEXD0 

"X'DO 1 " Model 1,2 Absolute vector graph¬ 
ics, programmed function keyboard and 
alphameric keyboard 

111. 

4 4 4 4 

GA2HEXE0 

"X'EO 1 " Model 1,2 Absolute vector graph¬ 
ics, alphameric keyboard and light pen 

1111 

4 4 4 4 

GA2HEXF0 

"X’FO*" Model 1,2 Absolute vector graph¬ 
ics, alphameric keyboard, light pen and 
programmed function keyboard 

» « • • 

.. .1 

GA2HEX01 

"X^l*" Model 1 4K Buffer only 

4 4 4 4 

. .1. 

GA2HEX02 

"X'02 1 " Model 1 8K Buffer only 

• 4 4 4 

. .11 

GA2HEX03 

"X*03*" Model 1 Character generator only 

4 4 4 4 

.1.. 

GA2HEX04 

• f X , 04 ,n Model 1 4K Buffer and character 
generator 

4 4 4 4 

.1.1 

GA2HEX05 

n X , 05 ,n Model 1 8K Buffer and character 
generator 

• 1 • • 

.11. 

GA2HEX06 

”X , 06 ,n Model 1 Graphic Design feature 
only 

• • # • 

.ill 

GA2HEX07 

"X^?*" Model 1 Graphic Design feature 
and 4K buffer 

• • • • 

1. .. 

GA2HEX08 

"X , 08 ,n Model 1 Graphic Design Feature 
and 8K buffer 

• 44 * 

l. .1 

GA2HEX09 

n X* 09 1 " Model 1 Graphic Design feature 
and character generator 

4 4 • 4 

l.l. 

GA2HEX0A 

"X'OA 111 Model 1 Graphic Design feature. 


UCBTYP 

LC28-1389-Q (c) Copyright IBM Corp. 1980, 1985 


UCBTYP 

Data Area Descriptions 351 






Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 

4K buffer, and character generator 

.... 1.11 6A2HEX0B n X'0B ,n Model 1 Graphic Design feature, 

8K buffer, and character generator 


3270 Display system devices 

3277, 3278 and 3279 display stations 


0 


1 


(0) 

BITSTRING 

i 

3270 Display system devices Model bits 
3277, 3278 and 3279 display stations 

.. .1 

.. .1 

GC1HEX11 

"X , ll ,n 

Model 1 

.. .1 

..1. 

GC1HEX12 

n X * 12 * ** 

Model 2, 2A, 2B, 3, 3A, 3B, or 4 

(1) 

BITSTRING 

1 

3270 Display system devices- Optional 
Features 3277, 3278 and 3279 display 
stations 

111. 

« • » ♦ 

GC2HEXE0 

"X'EO'" 

Keyboard type 

• • • • 

• • • • 

GC2HEX00 

"X^O 1 " No keyboard, domestic character 
generator, and monocase character genei— 
ator 

..1. 

♦ • • • 

GC2HEX20 

"X'20 ,n 
board 

66 Key EBCDIC typewriter key- 

.1.. 

• •it 

GC2HEX40 

"X'40»" 

board 

78 Key EBCDIC typewriter key- 

.11. 

• • • • 

GC2HEX60 

"X'60»" 

66 Key data entry keyboard 

1... 

• fit 

GC2HEX80 

"X'80»" 

78 Key operator console keyboard 

1.1. 

• t • • 

GC2HEXA0 

"X'AO'" 

66 Key ASCII typewriter keyboard 

11.. 

• •it 

GC2HEXC0 

"X'CO'" 

78 Key ASCII typewriter keyboard 

...1 

• • • • 

GC2HEX10 

"X'lO'" 

Audible alarm feature 

• • • • 

in. 

GC2HEX0E 

"X*0E ,n 

Character generator type 

• • 9 9 

. .i. 

GC2HEX02 

"X*02»" 

ASCII A character generator 

• • • • 

.1.. 

GC2HEX04 

"X'04 ,B 

ASCII B character generator 

t • • t 

.li. 

GC2HEX06 

"X'06»" 

tor 

United Kingdom character genera- 

• it* 

i. .. 

GC2HEX08 

"X*08 ,n 

French character generator 

• tit 

i.i. 

GC2HEX0A 

"X'0A» n 

German character generator 

• • • • 

...i 

GC2HEX01 

n X*01 ,n 

Character generator case 


OCBTYP 

352 MVS/370 Debug Hdbk Vol 5 


UCBTYP 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME_DESCRIPTION 


3270 Display system devices 
3284 and 3286 Printers 


0 (0) BITSTRING 1 

...1 ...1 GD1HEX11 

...1 ..1. GD1HEX12 

1 (1) BITSTRING 1 

. GD2HEX00 


Graphics Device Class 


(2) BITSTRING 

1 


Device < 

Class byte 

• *•1 * • * * 


GD3HEX10 

"X'lO*" 

Graphics 

(3) BITSTRING 

1 


Graphics Class unit code byte 

.1. 


GA4HEX02 

"X'02'" 

2250 Display Unit 

.11 


GA4HEX03 

"X'03'" 

2260 Display Unit 

.1. . 


GA4HEX04 

**X * 04 * ** 

1053 Printer 

.1.1 


GA4HEX05 

"X , 05 ,n 

2280 Display Unit 

.11. 


GA4HEX06 

"X»06»" 

2282 Display Unit 

.Ill 


GA4HEX07 

"X'07 ,w 

Model 85 console 

_ 1... 


GA4HEX08 

"X'08 tw 

3066 system console 

_1..1 


GC4HEX09 

"X'09*" 

3277, 3278, or 3279 Display 




tion 


_ 1.1. 


GD4HEX0A 

"X'0A ,n 

3284 Printer 

_1.11 


GD4HEX0B 

"X'0B ,n 

3286 Printer 

_11.. 


GA4HEX0C 

"X'OC*" 

3158 system console 

_11.1 


GA4HEX0D 

"X'OD'" 

3036 console 

- 111. 


GA4HEX0E 

"X'OE'" 

3138 console 

.... 1111 


GA4HEX0E 

"X'OF'" 

3148 console 


3270 Display system devices Model bits 
3284 and 3286 Printers 
"X , ll ,n 3284 or 3286 Model 1 
n X’12 ,n 3284 or 3286 Model 2 
3270 Display system devices- Optional 
Features 3284 and 3286 Printers 
"X'OO"* No optional features available 


UCBTYP 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


UCBTYP 

Data Area Descriptions 353 











Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME_DESCRIPTI01 


Teleprocessing Class - Communication Equipment 


0 (0) BITSTRING 1 Teleprocessing Model bits 

1111 _ CE1HEXF0 "X'FO'" I/O Supervisor flags 

1. CE1HEX80 n X'80Reserved bit 

.1. CE1HEX40 "X'40Overrunable device 

..1. CE1HEX20 "X'20 ,n If ON, burst mode. If OFF, byte 

mode. 

...1 _ CE1HEX10 "X'lO'" Data chaining 

.... 1111 CE1HEX0F "X'OF'" Model code. This value together 

with the value in the adaptor type field 
(byte 19- X'13') identify the model. 

.1 CE1HEX01 "X»01*" Adaptor type 1 Unit 1050* Adapt¬ 
or type 2 Unit 1030* Adaptor type 3 Unit 

1050; Adaptor type 4 Unit 83B3; Adaptor 
type 5 Unit TWX; Adaptor Type 6 Unit 
HTTA; Adaptor Type 8 Unit 2260* 

.1. CE1HEX02 "X'02*" Adaptor Type 1 Unit 1060* Adapt¬ 
or Type 4 Unit 115A; 

.11 CE1HEX03 "X'OS'" Adaptor Type 1 Unit 2740 (cor- 

resspondence code); 

.1.. CE1HEX04 W X'04 ,n Adapter Type 1 Unit 2740 

.1.1 CE1HEX05 "X'05*" Adapter Type 1 Unit 2741C (cor¬ 
respondence code); Adapter Type 9 Unit 
BSC1 non-switched Point to point 

.11. CE1HEX06 "X'06*" Adapter Type 1 Unit 2741P 

(PTTC/BCD or PTTC/EBCDIC); Adapter Type 
9 Unit BSC2 (switched point to point) 

.Ill CE1HEX07 "X'07 ,n Adapter type 1 Unit 1050X (In¬ 
hibit); Adapter Type 9 Unit BSC3 
(non-switched multipoint) 

_ 1... CE1HEX08 "X'08'" Adapter Type 1 Unit 2740X (In¬ 
hibit) 

_ 1..1 CE1HEX09 "X'09 s " Adapter Type 1 Unit 2740B 

1 (1) BITSTRING 1 Teleprocessing Optional Features byte 

1. CE2HEX80 "X'80'" Automatic calling 


UCBTYP 

354 MVS/370 Debug Hdbk Vol 5 


UCBTYP 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 





Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


.1.. 

• • • • 

CE2HEX40 

"X'40 "* 

Automatic polling 

. .1. 

• ft ft ft 

CE2HEX20 

"X'20*" Checking (2740 only) or dual 
communications interface (2701 SDA-II) 

...1 

• • ft • 

CE2HEX10 

"X'10'" 

Automatic answering 

• • 1 ft 

1... 

CE2HEX08 

B X'08 ,B 

Station control (2740 ONLY) 

• • • # 

.1.. 

CE2HEX04 

"X*04»" Dual code (2701 SDA-II) or Tran¬ 
smit control (2740 only) 

• • • * 

11.. 

CE2HEX0C 

"X'0C»" 

Optical Image Unit 

ft ft ft ft 

. .11 

CE2HEX03 

"X'OS'" 

SADTHREE 

...» 

. .1. 

CE2HEX02 

B X*02' B 

SADTW0 

• • • • 

.. .1 

CE2HEX01 

n X t 01 <n 

SADONE 

ft ft ft ft 

• * • • 

CE2HEX00 

"X* 00 1 " 

SADZER 

(2) 

BITSTRING 

1 

Device Class bits 

.1.. 

.... 

CE3HEX40 

n X , 40 ,n Teleprocessing Communication 
Equipment 

(3) 

BITSTRING 

1 

Teleprocessing Device unit code byte 

1111 

ft ft ft ft 

CE4HEXF0 

"X'FO*" 

2703 

Adapter type Hith 2701, 2702 or 

.. .1 

ft ft ft ft 

CE4HEX10 

"X'lO'" 

IBM Terminal Adapter Type I 

. .1. 

» . . • 

CE4HEX20 

B X'20 ,B 

IBM Terminal Adapter Type II 

. .11 

• , # • 

CE4HEX30 

"X^O'" 

IBM Telegraph Adapter 

.1. . 

• ft ft . 

CE4HEX40 

"X*40 ,w 

Telegraph Adapter Type I 

.1.1 

ft ft • * 

CE4HEX50 

n X’50 ,n 

Telegraph Adapter Type II 

.11. 

• • ft ft 

CE4HEX60 

"X'6 0' w 

World Trade Telegraph Adapter 

.111 

• • ft * 

CE4HEX70 

W X'70 ,B 

Synchronous Adapter Type I 

1. .. 

ft ft • • 

CE4HEX80 

"X'ZO'" 

IBM Terminal Adapter Type III 

1. .1 

ft ft ft ft 

CE4HEX90 

B X'90»" 

Synchronous Adapter Type II 

• • . • 

1111 

CE4HEX0F 

"X* 0F ,B 

Control Unit 

« • • • 

.. .1 

CE4HEX01 

B X'01 ,B 

2702 Control Unit 

ft • ft ft 

..1. 

CE4HEX02 

B X'02 ,B 

2701 Control Unit 

• • * * 

..11 

CE4HEX03 

"X'03 ,B 

2703 Control Unit 

• • ft ft 

.1. . 

CE4HEX04 

"X»04 ,B 

2955 

.... 

.1.1 

CE4HEX05 

B X»05 ,B 

Unit 

3704/3705 Intelligent Control 

1111 

...1 

CE4HEXF1 

"X* FI ,B 

3791 Local Control Unit 


Channel-to-Channel Adapter Device Class 


UCBTYP 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


UCBTYP 

Data Area Descriptions 355 















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 



0 

(0) BITSTRING 
•••X ..«* 

1 

CC1HEX10 

CTC Model bits 
"X'10 ,n Data chaining 

1 

(1) BITSTRING 

1 


CTC Optional Features flags. None 
defined 

2 

(2) BITSTRING 
«1«« .. . 1 

1 

CC3HEX41 

Device Class bits 

"X^l 1 " Channel-to-Channel Adapter 

3 

(3) BITSTRING 

1 


Device unit code none defined 


Character Reader Device Class 

(There are no devices defined in this class* see unit record class) 


0 

(0) 

BITSTRING 

1 

Character Reader Model bits, 
defined 

None 

1 

2 

(1) 

(2) 

• ft 

BITSTRING 
BITSTRING 
. .1.. 

1 

1 

CR3HEX04 

Character Reader Optional Features byte 
Device Class bits 
w X l 04 ,n Character Reader 

3 

(3) 

BITSTRING 

1 

Character Reader device unit 
None defined. 

code byte. 


UCBTYP 

356 MVS/370 Debug Hdbk Vol 5 


UCBTYP 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 





Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 

CROSS REFERENCE 


HEX HEX HEX HEX HEX HEX 


NAME 

OFFSET 

VALUE 

NAME 

OFFSET 

VALUE 

NAME 

OFFSET 

VALUE 

CC1HEX10 

0 

10 

CE4HEX40 

3 

40 

GA2HEXE0 

1 

EO 

CC3HEX41 

2 

41 

CE4HEX50 

3 

50 

GA2HEXF0 

1 

FO 

CE1HEXF0 

0 

F0 

CE4HEX60 

3 

60 

GA2HEX0A 

1 

OA 

CE1HEX0F 

0 

OF 

CE4HEX70 

3 

70 

GA2HEX0B 

1 

OB 

CE1HEX01 

0 

01 

CE4HEX80 

3 

80 

GA2HEX00 

1 

00 

CE1HEX02 

0 

02 

CE4HEX90 

3 

90 

GA2HEX01 

1 

01 

CE1HEX03 

0 

03 

CR3HEX04 

2 

04 

GA2HEX02 

1 

02 

CE1HEX04 

0 

04 

DA1HEXF0 

0 

FO 

GA2HEX03 

1 

03 

CE1HEX05 

0 

05 

DA1HEX0F 

0 

OF 

GA2HEX04 

1 

04 

CE1HEX06 

0 

06 

DA1HEX10 

0 

10 

GA2HEX05 

1 

05 

CE1HEX07 

0 

07 

DA1HEX20 

0 

20 

GA2HEX06 

1 

06 

CE1HEX08 

0 

08 

DA1HEX40 

0 

40 

GA2HEX07 

1 

07 

CE1HEX09 

0 

09 

DA1HEX80 

0 

80 

GA2HEX08 

1 

08 

CE1HEX10 

0 

10 

DA2HEX04 

1 

01 

GA2HEX09 

1 

09 

CE1HEX20 

0 

20 

DA2HEX08 

1 

08 

GA2HEX10 

1 

10 

CE1HEX40 

0 

40 

DA2HEX10 

1 

10 

GA2HEX20 

1 

20 

CE1HEX80 

0 

80 

DA2HEX20 

1 

20 

GA2HEX30 

1 

30 

CE2HEX0C 

1 

OC 

DA2HEX40 

1 

40 

GA2HEX40 

1 

40 

CE2HEX00 

1 

00 

DA2HEX80 

1 

80 

GA2HEX50 

1 

50 

CE2HEX01 

1 

01 

DA2HEX84 

1 

84 

GA2HEX60 

1 

60 

CE2HEX02 

1 

02 

DA3HEX20 

2 

20 

GA2HEX70 

1 

70 

CE2HEX03 

1 

03 

DA4HEX0A 

3 

OA 

GA2HEX80 

1 

80 

CE2HEX04 

1 

04 

DA4HEX0B 

3 

OB 

GA2HEX90 

1 

90 

CE2HEX08 

1 

08 

DA4HEX0C 

3 

OC 

GA4HEX0C 

3 

OC 

CE2HEX10 

1 

10 

DA4HEX0D 

3 

OD 

GA4HEX0D 

3 

OD 

CE2HEX20 

1 

20 

DA4HEX0E 

3 

OE 

GA4HEX0E 

3 

OF 

CE2HEX40 

1 

40 

DA4HEX01 

3 

01 

GA4HEX01 

0 

01 

CE2HEX80 

1 

80 

DA4HEX02 

3 

02 

GA4HEX02 

3 

02 

CE3HEX40 

2 

40 

DA4HEX03 

3 

05 

GA4HEX03 

3 

03 

CE4HEXF0 

3 

F0 

DA4HEX06 

3 

06 

GA4HEX04 

3 

04 

CE4HEXF1 

3 

FI 

DA4HEX07 

3 

07 

GA4HEX05 

3 

05 

CE4HEX0F 

3 

OF 

DA4HEX08 

3 

08 

GA4HEX06 

3 

06 

CE4HEX01 

3 

01 

DA4HEX09 

3 

09 

GA4HEX07 

3 

07 

CE4HEX02 

3 

02 

GA1HEXF0 

0 

FO 

GA4HEX08 

3 

08 

CE4HEX03 

3 

03 

GA1HEX0F 

0 

OF 

GC1HEX11 

0 

11 

CE4HEX04 

3 

04 

GA1HEX30 

0 

30 

GC1HEX12 

0 

12 

CE4HEX05 

3 

05 

GA2HEXA0 

1 

AO 

GC2HEXA0 

1 

AO 

CE4HEX10 

3 

10 

GA2HEXB0 

1 

BO 

GC2HEXC0 

1 

CO 

CE4HEX20 

3 

20 

GA2HEXC0 

1 

CO 

GC2HEXE0 

1 

EO 

CE4HEX30 

3 

30 

GA2HEXD0 

1 

DO 

GC2HEX0A 

1 

OA 


UCBTYP 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


UCBTYP 

Data Area Descriptions 357 





Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


NAME 

HEX 

OFFSET 

HEX 

VALUE 

NAME 

HEX 

OFFSET 

HEX 

VALUE 

NAME 

HEX 

OFFSET 

HEX 

VALUE 

GC2HEX0E 

1 

0E 

MT2HEX10 

1 

10 

UR4HEX04 

13 

04 

GC2HEX00 

1 

00 

MT2HEX20 

1 

20 

UR4HEX05 

13 

05 

GC2HEX01 

1 

01 

MT2HEX40 

1 

40 

UR4HEX06 

13 

06 

GC2HEX02 

1 

02 

MT2HEX80 

1 

80 

UR4HEX07 

13 

07 

GC2HEX04 

1 

04 

MT3HEX80 

2 

80 

UR4HEX08 

13 

08 

GC2KEX06 

1 

06 

MT4HEX01 

3 

01 

UR4HEX09 

13 

09 

GC2HEX08 

1 

08 

MT4HEX03 

3 

03 

UR4HEX1A 

13 

1A 

GC2HEX10 

1 

10 

MT4HEX80 

3 

80 

UR4HEX1B 

13 

IB 

GC2HEX20 

1 

20 

UCBCOMMN 

0 


UR4HEX1C 

13 

1C 

GC2HEX40 

1 

40 

UCBTYP 

10 


UR4HEX1D 

13 

ID 

GC2HEX6 0 

1 

60 

UR1HEXF0 

10 

FO 

UR4HEX1E 

13 

IE 

GC2HEX80 

1 

80 

UR1HEX0F 

10 

OF 

UR4HEX1F 

13 

IF 

GC4HEX09 

3 

09 

UR1HEX10 

10 

10 

UR4HEX10 

13 

10 

GD1HEX11 

0 

11 

UR1HEX20 

10 

20 

UR4HEX11 

13 

11 

GD1HEX12 

0 

12 

UR1HEX40 

10 

40 

UR4HEX12 

13 

12 

GD2KEX00 

1 

00 

UR1HEX80 

10 

80 

UR4HEX13 

13 

13 

GD3HEX10 

2 

10 

UR2HEX01 

11 

01 

UR4HEX14 

13 

14 

GD4HEX0A 

3 

0A 

UR2HEX10 

11 

10 

UR4HEX15 

13 

15 

GD4HEX0B 

3 

0B 

UR2HEX20 

11 

20 

UR4HEX16 

13 

16 

MT1HEXF0 

0 

F0 

UR2HEX4E 

11 

4E 

UR4HEX17 

13 

17 

MT1HEX0F 

0 

OF 

UR2HEX80 

11 

80 

UR4HEX18 

13 

18 

MT1HEX01 

0 

01 

UR3HEX08 

12 

08 

UR4HEX19 

13 

19 

MT1HEX02 

0 

02 

UR4HEX0A 

13 

OA 

UR4HEX20 

13 

20 

MT1HEX04 

0 

04 

UR4HEX0B 

13 

OB 

UR4HEX21 

13 

21 

MT1HEX08 

0 

08 

UR4HEX0C 

13 

OC 

UR4HEX22 

13 

22 

MT1HEX09 

0 

OF 

UR4HEX0D 

13 

OD 

UR4HEX23 

13 

23 

MT1HEX10 

0 

10 

UR4HEX0E 

13 

OE 

UR4HEX30 

13 

30 

MT1HEX20 

0 

20 

UR4HEX0F 

13 

OF 

UR4HEX4C 

13 

4C 

MT1HEX40 

0 

40 

UR4HEX01 

13 

01 

UR4HEX42 

13 

42 

MT1HEX80 

0 

80 

UR4HEX02 

13 

02 

UR4HEX44 

13 

44 

MT2HEX07 

1 

07 








UCBTYP 

358 MVS/370 Debug Hdbk Vol 5 


LC28-1389-0 (c) Copyright IBM Corp 


UCBTYP 
1980/ 1985 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


(JCM 


Common Name : Unit Control Module 
Macro XD : IEECUCM 

DSECT Name : UCM2EXT (DSECT for UCM extension) 

UCMPRFX (DSECT for MCS prefix) 

UCM (DSECT for UCM base) 

UCMEIL (DSECT for UCM event indication list 

UCMLIST (DSECT for individual device entry (UCME) map) 

UCMEXIT (DSECT for UCM user exit work area) 

UCMFEXTA (DSECT for UCM fixed extension base) 

UCMFS&VE (DSECT for UCM fixed extension save area) 

UCMPEXTA (DSECT for UCM pageable extension base) 

UCMEFEXT (DSECT for UCME fixed extension) 

UCMEPEXT (DSECT for UCME pageable extension) 
created by : SYSGEN creates UCM extension, MCS prefix, UCM base, UCM 
event indication list and UCM individual device entries (one per 
console). IEAVVINT creates UCM fixed extension base, UCM fixed 
extension save area, UCM pageable extension base, UCME fixed extension 
(one per console) and and UCME pageable extensions (one per console). 

The user exit work area is mapped by IEECUCM, but this area is not part 
of the UCM. UCMEXIT is a mapping of the space gotten and freed by 
IEAVVWTO. 

Subpool and Key : Nucleus resident and key 0 for areas created by SYSGEN 

Subpool 245 and key 0 for UCM fixed extension base and UCME 
fixed extensions 

Subpool 241 and key 0 for UCM pageable extension base and UCME 
pageable extensions 

Size t NUCLEUS - 588 bytes and 84 bytes/console 

Subpool 245 - 180 bytes and 12 bytes/console 
Subpool 241 - 120 bytes and 16 bytes/console 
Pointed to by : CVTCUCB field of the CVT data area (UCM base) 

UCMVEA field of the UCM data area (first device entry UCM) 

UCMVEL field of the UCM data area (last device entry UCM) 
Serialization : Local and CMS locks 

Function t The UCM base, UCM extension, UCM MCS prefix, UCM event 
indication list, UCM fixed extension base and the UCM pageable extension 
base describe the general characteristics of all consoles specified at 
SYSGEN; and the UCME's, UCME fixed extensions and UCME pageable 
extensions describe each console in detail. There is one UCME, UCME 
fixed extension and UCME pageable extension for each console. 


UCM 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


UCM 

Data Area Descriptions 359 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


flE ESlI S_HEI _ LENGTH NAME _ DESCRIPTION 


0 

(0) STRUCTURE 

m 

UCM2EXT 

, START OF UCM EXTENSION 

0 

(0) SIGNED 

2 

UCMRSV84 

RESERVED 

2 

(2) SIGNED 

2 

UCMRSV85 

RESERVED 

4 

(4) V-ADDRESS 

4 

UCM2PST 

"VCIEA0PT02)"- BRANCH ENTRY POINT INTO 
•POST' ROUTINE 

8 

(8) ADDRESS 

4 

UCM2STA 

POINTER TO IEAVSTAA WORK AREA (SDWA) 


(8) HEX 

i 

UCM2SFLG 

IEAVSTAA CONTROL FLAGS 

1 • • • •••• 


UCM2SDNA 

"BIT0"- SDWA OBTAINED 

• 1 « • •••• 


UCM2SENT 

"BIT1"- IEAVSTAA ENTERED 

« » 1 • • • • • 


UCM2DTAK 

"BIT2"- DUMP TAKEN 

• * • 1 •••• 


UCM2DSTR 

"BIT3"- DUMP STARTED 

•••• 1 • •« 


UCM2WT0I 

"BIT4"- IEAVSTAA ABEND MESSAGE ISSUED 

• i»« • 1 • • 


UCM2REC 

i»BIT5"- RECURSIVE ENTRY OCCURRED 

•tit ••1• 


UCM2FAIL 

"BIT6"- COMM TASK HAS FAILED DURING THIS 
IPL 

«••• i*il 


UCMRV008 

"BIT7,,C*X ,n - RESERVED 

(9) ADDRESS 

3 

UCM2STAA 

ADDRESS OF SDWA OR ZERO 


12 

(C) SIGNED 

4 

UCM2T0KN 

IEAVSTAA ESTAE TOKEN 


16 

(10) ADDRESS 

4 

UCMRSV73 

RESERVED 


20 

(14) ADDRESS 

4 

UCMRSV74 

RESERVED 


MULTIPLE CONSOLE SUPPORT 
MCS IS STANDARD IN OS/VS. 
PRESENT. 

(MCS) UCM PREFIX 
THE MCS PREFIX IS 

ALWAYS 



0 

(0) STRUCTURE 

0 

UCMPRFX 

MCSUCM 

, START OF MCS PREFIX 
"X"- ALIAS FOR START OF MCS 

PREFIX 

0 

(0) ADDRESS 

4 

UCMMCENT 

ADDRESS OF MASTER CONSOLE UCM ENTRY 

4 

(4) CHARACTER 

72 

UCMSAVEO 

RESIDENT REGISTER SAVE AREA 

FOR IEACVTSK 


UCN 

360 


MVS/370 Debug Hdbk Vol 5 


UCM 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 




















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


4 

(4) SIGNED 

4 

UCMSVAO 

WORD 1 

8 

(8) SIGNED 

4 

UCMSVBO 

WORD 2 

12 

(C) SIGNED 

4 

UCMSVCO 

WORD 3 

16 

(10) SIGNED 

4 

UCMSVDO 

WORD 4 

20 

(14) SIGNED 

4 

UCMSVEO 

WORD 5 

24 

(18) SIGNED 

4 

UCMSVFO 

WORD 6 

28 

(1C) SIGNED 

4 

UCMSVGO 

WORD 7 

32 

(20) SIGNED 

4 

UCMSVHO 

WORD 8 

36 

(24) SIGNED 

4 

UCMSVIO 

WORD 9 

40 

(28) SIGNED 

4 

UCMSVJO 

WORD 10 

44 

(20 SIGNED 

4 

UCMSVKO 

WORD 11 

48 

(30) SIGNED 

4 

UCMSVLO 

WORD 12 

52 

(34) SIGNED 

4 

UCMSVMO 

WORD 13 

56 

(38) SIGNED 

4 

UCMSVNO 

WORD 14 

60 

(30 SIGNED 

4 

UCMSVOO 

WORD 15 

64 

(40) SIGNED 

4 

UCMSVPO 

WORD 16 

68 

(44) SIGNED 

4 

MCMSVQO 

WORD 17 

72 

(48) SIGNED 

4 

UCMSVRO 

WORD 18 

76 

(40 ADDRESS 

4 

UCMDOME 

ADDRESS OF FIRST DOM ELEMENT 

80 

(50) ADDRESS 

4 

UCMWTOX 

ZERO (0S/VS2) 


UCM 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


UCM 

Data Area Descriptions 361 

















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


84 

(54) BITSTRING 

2 

UCMSFLGS 

SYSTEM CONTROL FLAGS 

84 

(54) ADDRESS 

1 

UCMSFLG1 

BYTE 1 OF SYSTEM CONTROL FLAGS 


1 « • • aaaa 


UCMRSV01 

"BITO,,C'X*"- RESERVED 


•••• 


UCMSYSB 

"BITl"- HARD COPY SUPPORT REQUIRED 


• • 1• •••• 


UCMSYSC 

"BIT2"- COMMANDS TO HARD COPY 


•••X •••• 


UCMSYSD 

"BIT3"- CONSOLE SWITCH FOR MASTER 


• ••• X • • • 


UCMSYSE 

"BIT4"- NO CONSOLES ACTIVE 


• • • * a 1 a a 


UCMSYSF 

"BIT5"- GRAPHIC CONSOLES EXIST 


a a a a a a X a 


UCMSYSG 

"BIT6"- HARD COPY DEVICE IS SYSLOG 


a a a a aaal 


UCMRSV35 

"BIT7,,C , X'"- RESERVED 

85 

(55) ADDRESS 

1 

UCMSFLG2 

BYTE 2 OF SYSTEM CONTROL FLAGS 


Xaaa aaaa 


UCMSYSI 

"BITO"- WQE HOUSEKEEPING REQUIRED 


alaa aaaa 


UCMSYSJ 

"BITl"- HARD COPY TO BE WRITTEN 


aala aaaa 


UCMSYSK 

"BIT2"- NEW CONSOLE IS COMPOSITE 


aaal aaaa 


UCMSYSI 

"BIT3"- DEVICE BEING ACCESSED BY CONSOLE 
SWITCH TO SOUND CONSOLE ALARM 


aaaa laaa 


UCMSYSM 

"BIT4"- FAILING CONSOLE IS COMPOSITE 


aaaa aXaa 


UCMSYSN 

"BITS"- GRAPHIC CONSOLES ACTIVE 


aaaa aala 


UCMSYSO 

"BIT6"- DUMMY ATTENTION BY WTL 


aaaa aaal 


UCMSYSP 

"BIT7"- DEVICE BEING ACCESSED BY CONSOLE 
SWITCH TO SOUND MAIN POWER ALARM 

86 

(56) HEX 

2 

UCMOWTOR 

DEFAULT VALUES FOR OLD WTO/R MACROS 

88 

(58) SIGNED 

4 

UCMCMID 

CURRENT MSG IDENTIFICATION NUMBER 

92 

(50 ADDRESS 

4 

UCMHCUCM 

ADDRESS OF HARD COPY UCM ENTRY (OR ZERO) 

96 

(60) SIGNED 

1 

UCMXCT 

EXTERNAL REQUEST COUNT 

97 

(61) ADDRESS 

3 

UCMUEXIT 

ZERO (WAS ADDRESS OF USER EXIT DATA) 

100 

(64) HEX 

2 

UCMHRDRT 

HARD COPY ROUTING CODE ASSIGNMENTS 

102 

(66) HEX 

2 

UCMRSV03 

RESERVED 

104 

(68) HEX 

24 

UCMXSA 

6-WORD PARAMETER LIST FOR SVC 72 

104 

(68) ADDRESS 

4 

UCM1WD 

PTR TO 3RD WORD OF SVC 72 PARM LIST 

108 

(60 ADDRESS 

4 

UCM2MD 

2ND WORD OF SVC 72 PARM LIST 


UCM 

362 


MVS/370 Debug Hdbk Vol 5 


UCM 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 














Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


112 

(70) ADDRESS 

4 

UCM3WD 

3RD WORD OF SVC 72 PARM LIST 

116 

(74) ADDRESS 

4 

UCM4WD 

4TH WORD OF SVC 72 PARM LIST 

120 

(78) ADDRESS 

4 

UCM5WD 

5TH WORD OF SVC 72 PARM LIST 

124 

(70 ADDRESS 

4 

UCM6WD 

6TH WORD OF SVC 72 PARM LIST 

128 

(80) ADDRESS 

4 

UCMQRTN 

ADDRESS OF ENQ ROUTINE ENTRY POINT 

132 

(84) SIGNED 

4 

UCMSWSA1 

SAVE AREA FOR IEAVSWCH 

136 

(88) SIGNED 

4 

UCMSWSA2 

SAVE AREA FOR IEAVSWCH 

140 

(80 ADDRESS 

4 

UCMRSV69 

RESERVED 

144 

(90) SIGNED 

4 

UCMNPECB 

NIP ECB POSTED WHEN NIP ROUTINE'S HARD 
COPY CAN BE WRITTEN 

148 

(94) ADDRESS 

4 

UCMLOGAD 

ADDRESS OF WTL BUFFER 

152 

(98) SIGNED 

4 

UCMRSV72 

RESERVED 

156 

(90 ADDRESS 

1 

UCMSDS1 

SDS FLAGS 


1 •«• tii» 


UCMSDS1A 

"BITO"- STCMDS TO HARDCOPY 


• 1 • • • • • ■ 


UCMSDS1B 

"BIT1"- INCMDS TO HARDCOPY 


* • 1 • **«i 


UCMRSV04 

"BIT2,,C'X»"- RESERVED 


...1 _ 


UCMRSV05 

"BIT3,,C'X'"- RESERVED 


••I* 1 •« • 


UCMRSV06 

"BIT4,,C'X'"- RESERVED 


.1.. 


UCMRSV07 

n BIT5,,C'X'"- RESERVED 


.1. 


UCMRSV08 

"Bm^C'X'"- RESERVED 


• * * * 1 


UCMRSV09 

"BIT7 , jC'X"*- RESERVED 

157 

(9D) HEX 

1 

UCMSDS2 

RESERVED FOR SDS FLAGS 

158 

(9E) SIGNED 

2 

UCMRSV65 

RESERVED 


POINTERS TO UCM MCS PREFIX AND UCM EXTENSION 
LOCATED IMMEDIATELY PRECEDING UCM BASE SECTION 


UCM 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


UCM 

Data Area Descriptions 363 




















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


160 

(AO) ADDRESS 

4 

UCM2PTR 

ADDRESS OF UCM EXTENSION (0S/VS2 

ONLY) 

164 

(A4) ADDRESS 

4 

UCMPRFXP 

ADDRESS OF UCM MCS PREFIX 


UNIT 

CONTROL MODULE (UCM) 

BASE 




0 

(0) STRUCTURE 

D 

UCM 

, START OF UCM BASE FIXED ECBS 


0 

(0) SIGNED 

4 

UCMXECB 

EXTERNAL INTERRUPT ECB 


4 

(4) SIGNED 

4 

UCMAECB 

ATTENTION INTERRUPT ECB 


8 

(8) SIGNED 

4 

UCMOECB 

WTO/WTOR REQUEST ECB 


12 

(C) SIGNED 

4 

UCMDECB 

DOM REQUEST ECB 


12 

(C) SIGNED 

4 

UCMLECB 

WTL REQUEST ECB 


16 

(10) SIGNED 

4 

UCMARECB 

CONSOLE RECOVERY ECB (0S/VS2) 


20 

(14) ADDRESS 

4 

UCMLSTP 

ADDRESS OF EVENT INDICATION LIST 
WTO/WTOR CONTROL FIELDS 

(EIL) 

24 

(18) ADDRESS 

4 

UCMWTOQ 

ADDRESS OF FIRST WQE (SYSOUT QUEUE) 

28 

(1C) ADDRESS 

4 

UCMRPYQ 

ADDRESS OF FIRST ORE (REPLY-Q ELEMENT) 

32 

(20) HEX 

13 

UCMRPYI 

REPLY ID ASSIGNMENT PATTERN (100 

BITS) 

45 

(2D) SIGNED 

1 

UCMRQLM 

I.D. ASSIGNMENT LIMIT 


46 

(2E) SIGNED 

2 

UCMWQLM 

WQE BUFFER LIMIT 


48 

(30) FLOATING 

8 

UCMWQCNT 

WQE COUNT FIELDS 


48 

(30) SIGNED 

4 

UCMWQRSV 

RESERVED WQE COUNT 


52 

(34) SIGNED 

4 

UCMMQNR 

CURRENT WQE COUNT 



UCM 

364 


MVS/370 Debug Hdbk Vol 5 


UCM 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


56 

(38) 

SIGNED 

2 

UCMRQNR 

CURRENT ORE COUNT 

58 

(3A) 

SIGNED 

2 

UCMRSV83 

RESERVED 

60 

(30 

SIGNED 

4 

UCMWQEND 

ADDRESS OF LAST HQE OR ZERO 

64 

(40) 

ADDRESS 

4 

UCMPXA 

ADDR OF COMMUNICATIONS TASK TCB (0S/VS2) 

68 

(44) 

BITSTRING 

1 

UCMPXB 


68 

(44) 

ADDRESS 

1 

UCMMODE 

MODE FLAGS 


1. . 

• • • • • 


UCMCTIC 

"BITO"- COMMTASK INITIALIZATION COMPLETE 


.1. 

• • « » • 


UCMRSV66 

"BIT1,,C , X ,W - RESERVED 


. .1 

• * « • • 


UCMTPUTA 

"BIT2"- TPUTTER IS ACTIVE (0S/VS2) 


• • » 

1 .... 


UCMRSV14 

"BIT3,,C'X ,W - RESERVED 


» • 1 

. 1... 


UCMAMFA 

"BIT4"- ACCEPT 'VARY' CMD W/MSTCONS OPND 
FROM ANY MCS SECONDARY CONSOLE 


« « « 

. . 1 .. 


UCMOGCE 

"BITS"- ONLY GRAPHIC CONSOLES ACTIVE 


• • • 

. ..1. 


UCMMCS 

"BIT6"- MCS GENERATED WITH SYSTEM 


• • • 

. ...1 


UCMFIX 

"BIT7"- CONTROL PROGRAM MODE (0 = 

0S/VS2) (1 = 0S/VS1) 

69 

(45) 

BITSTRING 

1 

UCMAMRF 

ACTION MESSAGE RETENTION FACILITY FLAGS 


1.. 

• « • • • 


UCMAMRFA 

"BITO"- IF ON, THE ACTION MESSAGE 
RETENTION FACILITY IS ACTIVE 


.1. 

• • « • • 


UCMAMRFF 

"BIT1 W - IF ON, THE ACTION MESSAGE 
RETENTION FACILITY FAILED 


. .1 

• • • « • 


UCMAMRFS 

"BIT2"- IF ON, THE ACTION MESSAGE 
RETENTION FACILITY IS SUSPENDED 


• • • 

1 .... 


UCMAMRFR 

"BIT3"- ACTION MESSAGE RETENTION FACILI¬ 
TY RECURSION INDICATOR 


• • • 

. 1 ... 


UCMRSV75 

"BIT4"- RESERVED 


• • ♦ 

. . 1 .. 


UCMRSV79 

"BITS"- RESERVED 


♦ « # 

. .. 1 . 


UCMRSV80 

"BIT6"- RESERVED 


• • • 

. ... 1 


UCMRSV81 

"BIT7"- RESERVED 

70 

(46) 

ADDRESS 

1 

UCMVRSN 

VERSION LEVEL 


• • • 

. ... 1 


UCMSP13 

"1"- VERSION LEVEL FOR 0S/VS2 JBB1326 


• « • 

. « . 1 . 


UCMSP132 

"2"- VERSION LEVEL FOR 0S/VS2 JBB1328 


• « • 

. .. 1 . 


UCMVRID 

"UCMSP132"- VERSION LEVEL VALUE 

71 

(47) 

BITSTRING 

1 

UCMRSV76 

RESERVED 


UCM 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


UCM 

Data Area Descriptions 365 







Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 

OFFSETS_HES_ LENGTH NAME _ DESCRIPTION 


THE FOLLOHING FIELDS ARE USED FOR ACCESSING UCM INDIVIDUAL 
DEVICE ENTRIES. THEY MUST BE DEFINED IN THE ORDER SHOWN. 


1- — ——1 

72 

(48) CHARACTER 

12 

UCMVDATA 

UCM ENTRY ACCESSING DATA 

72 

(48) ADDRESS 

4 

UCMVEA 

ADDRESS OF FIRST UCM ENTRY 

76 

(40 ADDRESS 

4 

UCMVEZ 

LENGTH OF A UCM ENTRY 

80 

(50) ADDRESS 

4 

UCMVEL 

ADDRESS OF LAST UCM ENTRY 

SAVE 

AREA FOR REFRESHABILITY 

ROUTINES 



84 

(54) HEX 

1 

UCMRSV77(56) 

RESERVED 

140 

(80 SIGNED 

4 

UCMSAVE4(16) 

SAVE AREA FOR IEAVCTSK 

204 

1 

(CC) SIGNED 

4 

UCMR9SV 

SAVE AREA FOR IEAVMWSV 
-1 


THE FIELDS DEFINED FOLLOHING THIS STATEMENT ARE PRESENT 
ONLY IN VARIABLE MODE SYSTEMS (0S/VS2) 


208 

(DO) FLOATING 

8 


DOUBLEHORD BOUNDARY ALIGNMENT 

208 

(DO) ADDRESS 

4 

UCMMNTR 

ADDRESS OF MONITOR ROUTINE 

212 

(D4) SIGNED 

4 

UCMMNECB 

ECB INDICATING MONITOR TPUTS TO DO 

216 

(08) SIGNED 

4 

UCMTRECB 

ECB INDICATING TPUTTER SHOULD TERMINATE 


UCM 

366 


MVS/370 Debug Hdbk Vol 5 


UCM 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 
















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 

OFFSETS TYPE LENGTH NAME _BigfiBimSM 


220 

(DC) 

ADDRESS 

4 

UCMMQPTR 

POINTER TO FIRST ELEMENT ON MONITOR 

QUEUE 

224 

(E0) 

ADDRESS 

4 

UCMMQEND 

POINTER TO LAST ELEMENT ON MONITOR QUEUE 

228 

CE4) 

ADDRESS 

4 

UCMMQNXT 

POINTER TO NEXT ELEMENT ON MONITOR QUEUE 
TO BE PROCESSED 

232 

( E8) 

ADDRESS 

4 

UCMMBPTR 

POINTER TO FIRST ELEMENT ON MONITOR MES¬ 
SAGE BLOCK QUEUE 

236 

(EC) 

SIGNED 

1 

UCMRQLM1 

IPL-SPECIFIED ORE BUFFER LIMIT 

237 

(ED) 

CHARACTER 

1 

UCMBMPFS 

HARDCOPY MESSAGE SUPPRESSION INDICATOR 

238 

(EE) 

SIGNED 

2 

UCMWQLM1 

IPL-SPECIFIED WQE BUFFER LIMIT 

240 

(F0) 

ADDRESS 

4 

UCMBFEXT 

ADDRESS OF UCM FIXED EXTENSION BASE 

244 

( F4) 

ADDRESS 

4 

UCMRP2AD 

POINTER TO REPLY PROCESSOR, STAGE 2 

248 

(F8) 

SIGNED 

2 

UCMRSV61 

RESERVED 

250 

(FA) 

SIGNED 

2 

UCMCTID 

ASID OF COMMUNICATIONS TASK 

252 

(FC) 

ADDRESS 

4 

UCMMBEND 

POINTER TO LAST ELEMENT ON MONITOR MES¬ 
SAGE BLOCK QUEUE 

256 

(100) 

ADDRESS 

4 

UCMWECBH 

POINTER TO START OF WQE ECB CHAIN 

260 

(104) 

ADDRESS 

4 

UCMWECBT 

POINTER TO END OF WQE ECB CHAIN 

264 

(108) 

ADDRESS 

4 

UCMOECBH 

POINTER TO START OF ORE ECB CHAIN 

268 

(10C) 

ADDRESS 

4 

UCM0ECBT 

POINTER TO END OF ORE ECB CHAIN 

272 

(110) 

SIGNED 

4 

UCM0RECP 

ORE CELLPOOL ID 

276 

(114) 

SIGNED 

4 

UCMWQECP 

WQE CELLPOOL ID 

280 

(118) 

ADDRESS 

4 

UCMASCB 

ASCB ADDRESS OF COMMUNICATIONS TASK 

284 

(11C) 

ADDRESS 

4 

UCMSWCH 

ADDRESS OF CONSOLE SWITCH ROUTINE 


UCM 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


UCM 

Data Area Descriptions 367 

















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


288 

(120) ADDRESS 

4 

UCMFRRAD 

ADDRESS OF COMMUNICATIONS TASK'S RECOV¬ 
ERY ROUTINE (IEAVMFRR) 

292 

(124) ADDRESS 

4 

UCMWAKUP 

ADDRESS OF COMMUNICATIONS TASK'S POST 
ERROR RECOVERY ROUTINE (IEAVMEST, ALIAS 
FOR IEAVMFRR) 

296 

(128) ADDRESS 

4 

UCMJES3T 

ADDRESS OF SUBSYSTEM ASCB 

300 

(120 HEX 

1 

UCMRSV42 

RESERVED 


1 a a a a a a a 


UCMRSV43 

"BITO,,C'X"»- RESERVED 


•••• 


UCMRSV44 

"BITl, »C'X"*- RESERVED 


»•1• •••• 


UCMRSV45 

"BIT2, ,C*X"*- RESERVED 


•••1 •••• 


UCMRSV46 

"BIT3,,C'X'"- RESERVED 


•••• X••■ 


UCMRSV47 

"BIT4,,C'X'"- RESERVED 


•*«t tlii 


UCMRSV48 

"BIT5, ,C'X"*- RESERVED 


•••• ••1t 


UCMRSV49 

"BIT6,,C'X'"- RESERVED 


•••• (ill 


UCMRSV50 

"BIT7, .OX*"- RESERVED 

301 

(12D) HEX 

1 

UCMRSV51 

RESERVED 


1 a a a • • • • 


UCMRSV52 

"BITO, ,C'X"»- RESERVED 


• X•• •••• 


UCMRSV53 

"BIT1, ,C'X"*- RESERVED 


• •X* • • • • 


UCMRSV54 

"BIT2,,C'X"*- RESERVED 


• a « 1 a a a a 


UCMRSV55 

n BIT3,,C'X"*- RESERVED 


a a a a X a a a 


UCMRSV56 

"BIT4,jC'X'"- RESERVED 


• ••• • X a a 


UCMRSV57 

"BITS, /OX*"- RESERVED 


a a a a a a X a 


UCMRSV58 

"BITe^C'X'"- RESERVED 


a a a a a a a 1 


UCMRSV59 

"BIT7, / OX'"- RESERVED 

302 

(X2E) SIGNED 

2 

UCMAMRMX 

MAXIMUM NUMBER OF AMRQ ENTRIES 

304 

(130) ADDRESS 

4 

UCMMTPLP 

IEETRACE PARAMETER LIST AND SAVE AREA 
POINTER 

308 

(134) ADDRESS 

4 

UCMCMDQR 

ADDRESS OF COMMAND QUEUER IEAVC700 

312 

(138) ADDRESS 

4 

UCMQSCAN 

ADDRESS OF QUEUE SCANNER IEAVQ700 

316 

(130 ADDRESS 

4 

UCMCMDPT 

POINTER TO COMMANDS TO BE ISSUED BY COM¬ 
MUNICATIONS TASK 

320 

(140) CHARACTER 

4 

UCMCBID 

CONTROL BLOCK ID OF 'UCM* 


UCN 

368 


MVS/370 Debug Hdbk Vol 5 


UCM 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS_TYPE_LENGTH 

NAME_ 

DESCRIPTION 

324 

(144) ADDRESS 

4 

UCMMPFSN 

ADDRESS OF THE MPF SCAN ROUTINE 
(IEAVM700) 

328 

(148) ADDRESS 

4 

UCMINTCB 

IEAVN701 TCB ADDRESS 

332 

(140 ADDRESS 

4 

UCMVWTCB 

IEAVHAIT TCB ADDRESS 

336 

(150) ADDRESS 

4 

UCMWQADA 

IEAVH600 AUTO DATA AREA POINTER 

340 

(154) SIGNED 

4 

UCMCQECP 

CQE CELLPOOL ID 

344 

(158) SIGNED 

4 

UCMSSIBP 

POINTER TO THE LIFE OF JOB SSIB FOR COM¬ 
MUNICATION TASK 

348 

(150 SIGNED 

2 

UCMBRDST 

COUNT OF REQUESTS TO HAVE HTOS BROADCAST 
TO ALL SUBSYSTEMS 

350 

(15E) HEX 

1 

UCMRSV62(18) 

RESERVED 

UCM EVENT INDICATION LIST 

(EIL) 



0 

(0) STRUCTURE 

0 

UCMEIL 

, START OF EIL 

0 

(0) ADDRESS 

1 


LENGTH OF EIL (IN HORDS) 

1 

(1) HEX 

1 

UCMRPYL 

LAST ASSIGNED REPLY I.D. 

2 

(2) SIGNED 

1 

UCMRTCT 

ROUTE COUNT 

3 

(3) HEX 

1 

UCMRSV15 

RESERVED 

4 

(4) ADDRESS 

4 

UCMNIPTR 

ADDRESS OF NIP'S 2K WTL BUFFER 

8 

(8) ADDRESS 

4 

UCMXECBA 

ADDRESS OF EXTERNAL INTRPT ECB 

12 

(C) ADDRESS 

4 

UCMAECBA 

ADDRESS OF ATTENTION INTRPT ECB 

16 

(10) ADDRESS 

4 

UCMOECBA 

ADDRESS OF WTO/R REQUEST ECB 

20 

(14) ADDRESS 

4 

UCMDECBA 

ADDRESS OF DOM REQUEST ECB 


UCM 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


UCM 

Data Area Descriptions 369 


















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


PRESETS_Effig_ LENGTH NAME _ DESCRIPTION 

24 (18) ADDRESS 4 UCMRECBA ADDRESS OF CONSOLE RECOVERY ECB (ACR) 

(0S/VS2) 


THE FOLLOWING PART OF THE EIL IS A LIST OF POINTERS TO I/O 
ECBS FOR EACH CONSOLE DEVICE DEFINED AT SYSGEN. FOR 0S/VS2, 
THE LIST CONTAINS A MINIMUM OF 2 ENTRIES. THE LIST IS 
VARIABLE ONLY AT SYSGEN. THE LAST ENTRY HAS A HIGH-ORDER 
BYTE OF X'80'. 



28 

(1C) 

SIGNED 

4 

UCMIECBA 

I/O 

ECB 

PTR 

LIST ENTRY MAPPING 

28 

29 

r— — 

(IC) 

(ID) 

CHARACTER 

ADDRESS 

1 

3 

UCMIECBF 

UCMIECBP 

I/O ECB 
ADDR OF 

PTR 

I/O 

LIST LAST ENTRY FLAG 

REQUEST ECB 

---- 1 


UCM INDIVIDUAL DEVICE ENTRY MAP (UCME) 

EACH UCM DEVICE ENTRY DEFINES SUPPORT FOR A CONSOLE UNIT 
SPECIFIED AT SYSGEN 


0 

(0) STRUCTURE 

H 

UCMLIST 

, START OF DEVICE ENTRY 

0 

(0) ADDRESS 

4 

UCMECB 

I/O COMPLETION ECB OR, FOR 2740, ADDRESS 
OF I/O COMPLETION ECB 


1111 11.1 


UCMECBFD 

"X'FD'"- UCMECB POST CODE K V COMMAND 

NAS ISSUED 


1111 111. 


UCMECBFE 

"X'FE»"- UCMECB POST CODE ROUTED COMMAND 


1111 1111 


UCMECBFF 

"X'FF*"- UCMECB POST CODE READY TO ROLL 

4 

(4) ADDRESS 

4 

UCMSBR 

ADDRESS OF RESIDENT PROCESSOR MODULE 

8 

(8) ADDRESS 

4 

UCMDCB 

ADDRESS OF DCB 

12 

(C) ADDRESS 

4 

UCMUCB 

UCB NAME (DEV ADDR) OR PTR TO UCB 

16 

(10) CHARACTER 

8 

UCMNAME 

PROCESSING MODULE NAME 


UCM 

370 


MVS/370 Debug Hdbk Vol 5 


UCM 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 













Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 



24 

(18) BITSTRING 

i 

UCMSTS 


1. *. •••• 


UCMAF 


• X • • • • • * 


UCMPF 


• • 1 • «« «. 


UCMBF 


• • • X »* • • 


UCMCF 


• • * • 1 • • • 


UCMTA 


• • • • • X • • 


UCMTB 


« • « . . « 1 . 


UCMEMCLS 


• • • • . .. 1 


UCMTC 

25 

(19) BITSTRING 

i 

UCMATR 


1..« »«. . 


UCMOF 


. 1 .« ..« « 


UCMIF 


••1* « . *. 


UCMXF 


•••X •••• 


UCMUF 


• ••• 1 • • • 


UCMLF 


• • • • • 1 * • 


UCMAT04 


• ••• • • X • 


UCMRSV16 


* » I « # • • 1 


UCMRSV17 

26 

(1A) SIGNED 

2 

UCMXA 

26 

(1A) CHARACTER 

1 

UCMID 

27 

(IB) HEX 

1 

UCMEDEVX 


• ••« • * * 1 


UCM2250 


•••• (tl* 


UCM2260 


.11 


UCM2540 


.1. . 


UCM2740 


.1.1 


UCM3066 


.11. 


UCM3211 


. Ill 


UCM3215 


.... 1... 


UCM32771 


_ 1..1 


UCM32772 


_1.1. 


UCM32781 


_ 1.11 


UCM32782 


_ 11.. 


UCM3782A 


.... 11.1 


UCM32783 


_ 111. 


UCM32784 


.... 1111 


UCM3792A 


...1 .... 


UCM3792B 


...1 ...1 


UCM3793A 


...1 ..1. 


UCM3793B 


STATUS FLAGS 

"BITO"- ATTENTION PENDING 

"BIT1"- OUTPUT PENDING 

"BIT2"- DEVICE BUSY 

"BIT3"- CLOSE PENDING 

"BIT4"- OPEN PENDING 

"BIT5"- DEQ APPROPRIATE OUTPUT QUEUE 

ENTRIES 

"BIT6"- EMERGENCY CLOSE PENDING 

"BIT7"- CONSOLE HAS INLINE WTO 

ATTRIBUTE FLAGS 

"BITO"- WTO SUPPORT 

"BIT1"- ATTENTION SUPPORT 

"BIT2"- EXTERNAL INTERRUPT SUPPORT 

"BIT3"- DEVICE ACTIVE 

"BIT4"- LOAD FLAG 

"BITS"- DEVICE STATUS TO CHANGE 

"BIT6, »C , X'"- RESERVED 

"BIT7,,C'X»"- RESERVED 

UNIQUE ENTRY I.D. 

DEVICE TYPE INDEX 
"X*01*"— 2250 DEVICE 
"X*02*"- 2260 DEVICE 

"X»03*"- 2540/2501/2520/3505/3525 DEVICE 

"X*04*"- 2740 DEVICE 

"X'05 ,n - 3066 DEVICE 

"X'06'"- 3211/1403/1443 DEVICE 

"X'07'"- 3215/3210/3213/1052 DEV 

"X , 08*"- 3277-1 DEVICE 

"X*09 ,n — 3277-2/3036/3158 DEVICE 

"X'OA*"- 3278-1 DEVICE 

"X*0B ,n - 3278-2 DEVICE 

"X»0C'"- 3278-2A DEVICE 

"X*OD'"- 3278-3 DEVICE 

"X'OE*"- 3278-4 DEVICE 

"X'OF*"- 3279-2A DEVICE 

"X»10*"- 3279-2B DEVICE 

"X'll'"- 3279-3A DEVICE 

"X'12 ,n - 3279-3B DEVICE 


1 


UCM 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


UCM 

Data Area Descriptions 371 













Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ Bi§£R£EI£fiM 



...1 ..11 
•••X •X•• 


UCM3284 

UCM3792C 

"X'13'"- 3284/3286 DEVICE 
"X'14'"- 3279-2C DEVICE 

28 

(1C) ADDRESS 

4 

UCMXB 

ADDRESS OF RDCM(GRAPHICS) OR ZERO 

32 

(20) HEX 

2 

UCMRTCD 

ROUTING CODES ASSIGNED TO THIS CONSOLE 

34 

(22) HEX 

2 


RESERVED 

36 

(24) ADDRESS 

4 

UCMOUTQ 

ADDRESS OF CQE QUEUE 

40 

(28) BITSTRING 

2 

UCMAUTH 

COMMAND CODE AUTHORIZATION 

40 

(28) HEX 

1 

UCMAUTHA 

1ST BYTE OF COMMAND CODE AUTH FLAGS 


X • • • • • • • 


UCMAUTH1 

"BITO"- COMMAND GROUP 1 (SYS) 


• 1 • • • • • * 


UCMAUTH2 

"BITl"- COMMAND GROUP 2 (I/O) 


• •X* •• • * 


UCMAUTH3 

"BIT2"- COMMAND GROUP 3 (CONS) 


• ••1 a a a a 


UCMRSV19 

"BIT3,»C'X ,n - RESERVED 


• X • *« 


UCMRSV20 

"BIT4,,C'X*"- RESERVED 


• • • • • X • • 


UCMRSV21 

"BIT5,,C'X*"- RESERVED 


a a a a • • 1 • 


UCMRSV22 

"BIT6,,C'X ,n - RESERVED 


• • • • • • • X 


UCMRSV23 

"BIT7,,C'X*"- RESERVED 

41 

(29) HEX 

1 

UCMAUTHB 

2ND BYTE OF COMMAND CODE AUTH FLAGS 

42 

(2A) BITSTRING 

2 

UCMDISP 

DISPOSITION FLAGS (2 BYTES) 

42 

(2A) BITSTRING 

1 

UCMDISP1 

FIRST BYTE DISPOSITION FLAGS 


1 • • a •••• 


UCMDISPA 

"BITO"- MASTER CONSOLE 


• 1 • • • * • • 


UCMDISPB 

"BITl"- HARD COPY DEVICE/CONSOLE 


••1* •••• 


UCMDISPC 

"BIT2"- GRAPHICS 


• ••X • • • • 


UCMDISPD 

"BIT3"- OUTPUT ONLY 


• ••• 1 • • • 


UCMDISPE 

"BIT4"- CONSOLE HAS FULL I/O CAPABILITY 


• • • • • 1 • • 


UCMDISPF 

"BITS"- CONSOLE IS MESSAGE STREAM ONLY 


• • • • • • 1« 


UCMDISPG 

"BIT6"- CONSOLE IS STATUS DISPLAY ONLY 


• • • • * • • 1 


UCMDISPH 

"BIT7"- INTEGRATED OPERATOR'S CONSOLE 





(0S/VS2) 

43 

(2B) BITSTRING 

1 

UCMDISP2 

SECOND BYTE DISPOSITION FLAGS 


X •«• • • • • 


UCMDISPI 

"BITO"- DISPLAY TIME AND JOB NAME 





(0S/VS2) 


• la* •••• 


UCMDISPJ 

"BITl"- DISPLAY JOB NAME ONLY (0S/VS2) 


• a X a a a a a 


UCMDISPK 

"BIT2"- SUBSYSTEM ALLOCATABLE INDICATOR 


a a a 1 a a a a 


UCMDISPL 

"BIT3"- CONSOLE IS DEDICATED TO A SYSTEM 





COMPONENT (SUBSYSTEM) 


• ••• 1 a a a 


UCMDISPM 

"BIT4"- CONSOLE IS TO BE CONSIDERED A 


UCM 

372 


MVS/370 Debug Hdbk Vol 5 


UCM 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


/ 













Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 




PSEUDO MASTER 

CONSOLE 

• ••• • 1 * • 

UCMRV005 

"BIT5,,C'X ,n - 

RESERVED 

• * • • • * 1 1 

UCMRV006 

"BIT6,,C , X*"- 

RESERVED 

• • • • » « 1 1 

UCMRV007 

"BIT7,,C'X"*“ 

RESERVED 


44 

(20 ADDRESS 

4 

UCMALTEN 

ADDRESS OF ALTERNATE INPUT UCM ENTRY 

48 

(30) ADDRESS 

4 

UCMOAOEN 

ADDRESS OF OUTPUT/ALTERNATE OUTPUT UCM 
ENTRY 

52 

(34) ADDRESS 

4 

UCMWLAST 

ADDRESS OF LAST CQE SERVICED IN OUTPUT 
QUEUE 

56 

(38) ADDRESS 

4 

UCMCOMPC 

ADDRESS OF OTHER DEVICE ENTRY IF THIS IS 
A COMPOSITE CONSOLE 

60 

(30 BITSTRING 

2 

UCMMSG 

MESSAGE FLAGS 

60 

(30 BITSTRING 

1 

UCMMSG1 

FIRST BYTE MESSAGE FLAGS 


X • • • •••• 


UCMMSGA 

"BITO"- ’MONITOR JOBNAMES* REQUESTED 


• It* 


UCMMSGB 

"BIT1"- 'MONITOR STATUS* REQUESTED 


• • X • • • • • 


UCMRSV7 0 

"BIT2,,C’X*"- RESERVED 


•••X •••• 


UCMMSGD 

"BIT3"- RESQID REQUEST 


«••• X•t« 


UCMRSV71 

"BIT4, ,C'X"*- RESERVED 


• ••• • X « • 


UCMMSGF 

"BITS"- MONITOR SESSIONS 


• • * • • • 1 • 


UCMRSV26 

"BIT6,,C’X*"- RESERVED 


• • • • • • • X 


UCMRSV27 

"BIT7,,C'X"»- RESERVED 

61 

(3D) BITSTRING 

1 

UCMMSG2 

SECOND BYTE MESSAGE FLAGS 

62 

(3E) HEX 

1 

UCMXOR 

XOR MASK SET TO ZERO 

63 

(3F) BITSTRING 

1 

UCMDEVC 

DEVICE CONTROL FLAGS 


X • • • •«»* 


UCMDEVA 

"BITO”- FULL SCREEN ON GRAPHICS CONSOLES 


• 1« • • • i» 


UCMDEVB 

"BITl”- 'PREPARE* COMMAND ISSUED 


• • X • • • • • 


UCMDEVCC 

"BIT2"- CONSOLE SWITCH INDICATOR 


• • • X •••• 


UCMDEVD 

"BIT3"- DOM ISSUED 


• • • • 1 • • • 


UCMDEVE 

"BIT4**- I/O COMPLETE 


• ••• . 1 *. 


UCMDEVF 

’’BIT5"- DCM MODIFIED FOR DOM 


• ••• • • X « 


UCMDEVG 

"BIT6"- HIO ISSUED ON THE 2740 


• • • • • •«X 


UCMVHRSN 

"BIT7"- CONSOLE I/O PATH AFFECTED 
(0S/VS2) 


UCM 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


UCM 

Data Area Descriptions 373 

















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


fiEFSETS-HE!_ LENGTH NAME _ DESCRIPTION 


64 

(40) ADDRESS 

4 

UCMMLAST 

ADDRESS OF LAST MINOR HQE HANDLED 

68 

(44) ADDRESS 

4 

UCMRCT 

POINTER TO RCT 

68 

(44) HEX 

1 

UCMSDS5 

SDS FLAGS 


1 • • • «••• 


UCMSDS5A 

"BITO"- MLWTO LINE NEEDED TO KEEP WRIT¬ 
ING 


• 1 < • • • • I 


UCMSDS5B 

"BIT1"- INLINE OUTPUT PENDING 


• •1* • • • I 


UCMSDS5C 

"BIT2"- OUT-OF-LINE OUTPUT PENDING 


•••1 «••• 


UCMSDS5D 

"BIT3"- K Q ISSUED FOR THIS CONSOLE 


_1... 


UCMRSV30 

"BIT4,,C , X ,n - RESERVED 


• • • • tilt 


UCMSDS5F 

"BIT5"- FOR CRT, UCMMLAST VALID 


• ••• • » 1 • 


UCMSDS5G 

"BIT6"- I/O HARDWARE IN OUTPUT-ONLY STA¬ 
TUS 


• ••• » • * 1 


UCMRSV31 

"BIT7,,C*X'"- -RESERVED 

69 

(45) ADDRESS 

3 

UCMRCTA 

ADDRESS OF RCT 

72 

(48) ADDRESS 

4 

UCMFEXTP 

ADDRESS OF UCME FIXED EXTENSION 

76 

(40 SIGNED 

4 

UCMRSV64 

RESERVED 


.l.i .... 


UCMESI2E 

n x-UCMLIST n - LENGTH (BYTES) OF INDIV 
DEVICE ENTRY 




UCMEND 

"X-UCMESIZE"- ADDR OF LAST DEVICE ENTRY 

USER 

EXIT HORK AREA 




NOTE - 

THIS AREA IS NOT 

PART 

OF THE UCM. 

IT IS A 

MAPPING OF THE SPACE GOTTEN 

AND FREED BY 

IEAVVWTO. 


0 

(0) STRUCTURE 

n 

UCMEXIT 

, START OF USER EXIT WORK AREA 

0 

(0) CHARACTER 

128 

UCMMSTXT 

MESSAGE TEXT 

128 

(80) SIGNED 

4 

UCMROUTC 

ROUTE CODES 

132 

(84) SIGNED 

4 

UCMDESCD 

DESCRIPTOR CODES 


UCM 

374 


MVS/370 Debug Hdbk Vol 5 


UCN 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


■QEESJTS _IYEE_U Mfi lfcL N A ME _Bi§£BiEIiBM 


UNIT CONTROL MODULE (UCM) FIXED EXTENSION BASE 
(PRESENT IN 0S/VS2 ONLY) 


1 ■ , , _ 1 

0 

(0) STRUCTURE 

n 

UCMFEXTA 

, UCM FIXED EXTENSION BASE 

0 

(0) CHARACTER 

4 

UCMFUCMF 

ACRONYM IN EBCDIC UCMF- 

4 

(4) ADDRESS 

4 

UCMFPPTR 

ADDRESS OF UCM PAGEABLE EXTENSION BASE 

8 

(8) CHARACTER 

8 

UCMFMGFS 

FLAGS FOR FIXED EXTENSION BASE 


(8) BITSTRING 

1 

UCMFFLG1 

MESSAGE FLAGS 

1 * • • • • • * 


UCMFMSGE 

"BITO"- WQE SHORTAGE MESSAGE ISSUED 

« 1 • t «••• 


UCMFMSGA 

"BITl"- WQE CRITICAL MESSAGE ISSUED 

• • 1 • «••• 


UCMFMSGN 

"BIT2"- NO MQE THRESHOLD MESSAGES SHOULD 
BE ISSUED 

•••X •••• 


UCMFMSG1 

"BIT3"- ACTION MESSAGE RETENTION BUFFER 
SHORTAGE MESSAGE ISSUED 

•••• X••• 


UCMFMSG2 

"BIT4"- ACTION MESSAGE RETENTION SEVERE 
BUFFER SHORTAGE MESSAGE ISSUED 

• ••• • 1 • • 


UCMFMSG3 

"BIT5"- ACTION MESSAGE RETENTION BUFFER 
EXTENSION FAILED MESSAGE ISSUED 

• ••• (ill 


UCMFMSG4 

"BIT6"- ISSUE ACTION MESSAGE RETENTION 
BUFFER EXTENSION FAILED MESSAGE 

• • * • ... 1 


UCMFMSG5 

"BIT7"- ISSUE DOM FOR ACTION MESSAGE 
RETENTION BUFFER EXTENSION FAILED MES¬ 
SAGE 

(9) BITSTRING 

1 

UCMFFLG2 

MESSAGE FLAGS 

1. 


UCMFMSG6 

"BITO"- ACTION MESSAGE RETENTION FACILI¬ 
TY RESTART FAILED MESSAGE ISSUED 

• X•# •••* 


UCMFMSG7 

"BITl"- MPF FAILED MESSAGE SHOULD BE 
ISSUED 

••X* •••• 


UCMFMSG8 

"BIT2"- MPF FAILED MESSAGE HAS BEEN 
ISSUED 

• ••1 •••• 


UCMFRSV7 

"BIT3"- RESERVED 

• 1 • • • 


UCMFRSV8 

"BIT4"- RESERVED 

• • • • • X»» 


UCMFRSV9 

"BIT5"- RESERVED 


UCM 

LC28-1389-0 (c) Copyright IBM Corr- 1980, 1985 


UCM 

Data Area Descriptions 375 











Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 



• i • 1 • 


UCMFRSVA 

"BIT6"- RESERVED 


« • • • •• • X 


UCMFRSVB 

"BIT7"- RESERVED 

10 

(A) BITSTRING 

1 

UCMFFLG3 

QUEUE SCANNED FLAGS FOR ACTION MESSAGE 
RETENTION FACILITY 


1 » • • •••• 


UCMFRQSD 

"BIT0"- RETAINED MESSAGE QUEUE SCANNED 


• It* •••• 


UCMFIQSD 

”BITl n - RETAINED IMMEDIATE ACTION MES¬ 
SAGE QUEUE SCANNED 


• • 1 • •••• 


UCMFEQSD 

"BIT2"- RETAINED EVENTUAL ACTION MESSAGE 
QUEUE SCANNED 


» • • 1 •••• 


UCMFRSVC 

"BIT3"- RESERVED 


• ••• 1 • • • 


UCMFRSVD 

"BIT4"- RESERVED 


• ••• • 1 • • 


UCMFRSVE 

"BIT5"- RESERVED 


. 1. 


UCMFRSVF 

"BIT6"- RESERVED 


• ••• • • • 1 


UCMFRSVG 

"BIT7 n - RESERVED 

11 

(B) BITSTRING 

1 

UCMFRSV1 

RESERVED 

12 

(C) SIGNED 

4 

UCMFRSV2 

RESERVED 

16 

(10) SIGNED 

2 

UCMF60WQ 

60% OF CURRENT WQE LIMIT 

18 

(12) SIGNED 

2 

UCMF80WQ 

80% OF CURRENT WQE LIMIT 

20 

(14) CHARACTER 

8 

UCMFRSV3 

RESERVED 

28 

(1C) CHARACTER 

8 

UCMFECBL 

ECB LIST THAT IEAVMQWR WAITS ON IN A 
NO-CONSOLES CONDITION 

28 

(1C) ADDRESS 

4 

UCMFXECB 

ADDRESS OF EXTERNAL INTERRUPT ECB 

32 

(20) ADDRESS 

4 

UCMFRECB 

ADDRESS OF CONSOLE RECOVERY ECB 

32 

(20) BITSTRING 

1 

UCMFRBYT 

HIGH-ORDER BYTE OF UCMFRECB 


1 . 


UCMFRB0 

"BITO"- END OF LIST INDICATOR 

33 

(21) ADDRESS 

3 

UCMFRAD 

ADDRESS OF CONSOLE RECOVERY ECB 

36 

(24) ADDRESS 

4 

UCMFATCN 

ADDRESS OF UCME CANDIDATE FOR NEW MASTER 
CONSOLE (ATTENTION WAS GENERATED ON THIS 
DEVICE WHEN IN A NO-CONSOLES CONDITION) 

40 

(28) ADDRESS 

4 

UCMFE1ST 

ADDRESS OF FIRST UCME FIXED EXTENSION 


UCM 

376 


MVS/370 Debug Hdbk Vol 5 


UCM 

LC28-1389-0 Cc) Copyright IBM Corp. 1980, 1985 












Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


44 

(20 

SIGNED 

4 

UCMFELEN 

LENGTH OF A UCME FIXED EXTENSION 

48 

(30) 

ADDRESS 

4 

UCMFELST 

ADDRESS OF LAST UCME FIXED EXTENSION 

52 

(34) 

CHARACTER 

12 

UCMFAMRP 

POINTERS TO ACTION MESSAGE RETENTION 
QUEUES 

52 

(34) 

ADDRESS 

4 

UCMFAMRQ 

POINTER TO RETAINED MESSAGE QUEUE 

56 

(38) 

ADDRESS 

4 

UCMFIAMQ 

POINTER TO RETAINED IMMEDIATE ACTION 
MESSAGE QUEUE 

60 

(30 

ADDRESS 

4 

UCMFEAMQ 

POINTER TO RETAINED EVENTUAL ACTION MES¬ 
SAGE QUEUE 

64 

(40) 

SIGNED 

4 

UCMFRMCP 

CELLPOOL ID OF ACTION MESSAGE RETENTION 
QUEUE 

68 

(44) 

SIGNED 

2 

UCMFAMRN 

NUMBER OF AMRQ ENTRIES 

70 

(46) 

SIGNED 

2 

UCMF75MR 

75% OF MAXIMUM AMRQ ENTRIES 

72 

(48) 

SIGNED 

2 

UCMF80MR 

8OX OF MAXIMUM AMRQ ENTRIES 

74 

(4A) 

SIGNED 

2 

UCMF95MR 

95X OF MAXIMUM AMRQ ENTRIES 

76 

(40 

SIGNED 

2 

UCMFIBSZ 

INITIAL BUFFER SIZE FOR ACTION MESSAGE 
RETENTION BUFFER 

78 

(4E) 

SIGNED 

1 

UCMFAMRS 

SUBPOOL OF ACTION MESSAGE RETENTION BUF¬ 
FER 

79 

(4F) 

SIGNED 

1 

UCMFEBSZ 

EXTENT SIZE FOR ACTION MESSAGE RETENTION 
BUFFER 

80 

(50) 

ADDRESS 

4 

UCMFSAVP 

ADDRESS OF 72-BYTE SAVE AREA 

84 

(54) 

ADDRESS 

4 

UCMFMPFP 

ADDRESS OF MPF TABLE 

88 

(58) 

CHARACTER 

20 

UCMFRSV4 

RESERVED 


UCM 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


UCM 

Data Area Descriptions 377 













Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 

UNIT CONTROL MODULE (UCM) FIXED EXTENSION SAVE AREA 
(PRESENT IN 0S/VS2 ONLY) 


0 

(0) STRUCTURE 

n 

UCMFSAVE 

, UCM FIXED EXTENSION SAVE AREA 

0 

(0) SIGNED 

4 

UCMFSV01 

WORD 1 

A 

(4) SIGNED 

4 

UCMFSV02 

WORD 2 

8 

(8) SIGNED 

4 

UCMFSV03 

WORD 3 

12 

(C) SIGNED 

4 

UCMFSV04 

WORD 4 

16 

(10) SIGNED 

4 

UCMFSV05 

WORD 5 

20 

(14) SIGNED 

4 

UCMFSV06 

WORD 6 

24 

(18) SIGNED 

4 

UCMFSV07 

WORD 7 

28 

(1C) SIGNED 

4 

UCMFSV08 

WORD 8 

32 

(20) SIGNED 

4 

UCMFSV09 

WORD 9 

36 

(24) SIGNED 

4 

UCMFSV10 

WORD 10 

40 

(28) SIGNED 

4 

UCMFSV11 

WORD 11 

44 

(20 SIGNED 

4 

UCMFSV12 

WORD 12 

48 

(30) SIGNED 

4 

UCMFSV13 

WORD 13 

52 

(34) SIGNED 

4 

UCMFSV14 

WORD 14 

56 

(38) SIGNED 

4 

UCMFSV15 

WORD 15 

60 

(30 SIGNED 

4 

UCMFSV16 

WORD 16 

UCM 

378 

MVS/370 Debug Hdbk Vol 

5 

UCM 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 





















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


64 

(40) SIGNED 

4 

UCMFSV17 

WORD 17 

68 

(44) SIGNED 

4 

UCMFSV18 

UCMFSVLN 

HORD 18 

"X-UCMFSAVE"- LENGTH OF SAVE AREA 

UNIT CONTROL MODULE (UCM) PAGEABLE EXTENSION BASE 
(PRESENT IN 0S/VS2 ONLY) 


0 

(0) STRUCTURE 

D 

UCMPEXTA 

, UCM PAGEABLE EXTENSION BASE 

0 

(0) CHARACTER 

4 

UCMPUCMP 

ACRONYM IN EBCDIC UCMP- 

4 

(4) CHARACTER 

36 

UCMPDM1 

DOM ID'S 

4 

(4) SIGNED 

4 

UCMPWQE 

WQE CRITICAL MESSAGE DOM ID 

8 

(8) SIGNED 

4 

UCMPNMCC 

NO MASTER CONSOLE CONDITION MESSAGE DOM 
ID 

12 

(C) SIGNED 

4 

UCMPNCC 

NO-CONSOLE CONDITION MESSAGE DOM ID 

16 

(10) SIGNED 

4 

UCMPWQES 

HQE SHORTAGE MESSAGE DOM ID 

20 

(14) SIGNED 

4 

UCMPAMRS 

ACTION MESSAGE RETENTION BUFFER SHORTAGE 
MESSAGE DOM ID 

24 

(18) SIGNED 

4 

UCMPAMRC 

ACTION MESSAGE RETENTION SEVERE BUFFER 
SHORTAGE MESSAGE DOM ID 

28 

(1C) SIGNED 

4 

UCMPAMRF 

ACTION MESSAGE RETENTION BUFFER EXTEN¬ 
SION FAILED MESSAGE DOM ID 

32 

(20) SIGNED 

4 

UCMPAMRR 

ACTION MESSAGE RETENTION FACILITY 

RESTART FAILED MESSAGE DOM ID 

36 

(24) SIGNED 

4 

UCMPMPFD 

MPF FAILED MESSAGE DOM ID 


UCM 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


UCM 

Data Area Descriptions 379 

















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ INSCRIPTION 


40 

(28) CHARACTER 

8 

UCMPNJSR 

EBCDIC NAME OF JES3 SUBSYSTEM CONSOLE 
SERVICE ROUTINE 

48 

(30) ADDRESS 

4 

UCMPE1ST 

ADDRESS OF FIRST UCME PAGEABLE EXTENSION 

52 

(34) SIGNED 

4 

UCMPELEN 

LENGTH OF A UCME PAGEABLE EXTENSION 

56 

(38) ADDRESS 

4 

UCMPELST 

ADDRESS OF LAST UCME PAGEABLE EXTENSION 

60 

(30 CHARACTER 

4 

UCMPRSV9 

RESERVED 

64 

(40) ADDRESS 

4 

UCMPECB1 

TASK ECB FOR IEAVMQHR 

68 

(44) ADDRESS 

4 

UCMPECB2 

TASK ECB FOR IEEVHAIT 

STATUS 

FIELDS FOR THE ACTION 

MESSAGE RETENTION 

FACILITY AT THE TIME OF 

ERROR 


. 

72 

(48) CHARACTER 

12 

UCMPAMRP 

POINTERS TO ACTION MESSAGE RETENTION 
FACILITY QUEUES AT TIME OF ERROR 

72 

(48) ADDRESS 

4 

UCMPAMRQ 

POINTER TO RETAINED MESSAGE QUEUE AT 

TIME OF ERROR 

76 

(40 ADDRESS 

4 

UCMPIAMQ 

POINTER TO RETAINED IMMEDIATE ACTION 
MESSAGE QUEUE AT TIME OF ERROR 

80 

(50) ADDRESS 

4 

UCMPEAMQ 

POINTER TO RETAINED EVENTUAL ACTION MES¬ 
SAGE QUEUE AT TIME OF ERROR 

84 

(54) SIGNED 

2 

UCMPAMRN 

NUMBER OF RETAINED MESSAGES AT TIME OF 
ERROR 

86 

(56) BITSTRING 

1 

UCMPSNQB 

QUEUE SCANNED FLAGS FOR ACTION MESSAGE 
RETENTION FACILITY AT TIME OF ERROR 


1 • • • •••• 


UCMPRQSD 

"BITO"- RETAINED MESSAGE QUEUE HAS 
SCANNED AT TIME OF ERROR 


• 1 » i tii* 


UCMPIQSD 

"BITl"- RETAINED IMMEDIATE ACTION MES- 


UCK 

380 


MVS/370 Debug Hdbk Vol 5 


UCM 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


..1. 

• • • • 

UCMPEQSD 

SAGE QUEUE MAS SCANNED AT 
"BIT2"- RETAINED EVENTUAL 

TIME OF ERROR 
ACTION MESSAGE 

. ..1 

t * • • 

UCMPRSV1 

QUEUE HAS SCANNED AT TIME 
"BIT3"- RESERVED 

OF ERROR 

• • « • 

1. .. 

UCMPRSV4 

"BIT4"- RESERVED 



.1.. 

UCMPRSV5 

"BIT5"- RESERVED 


• It* 

..1. 

UCMPRSV6 

"BIT6"- RESERVED 


• It* 

.. .1 

UCMPRSV7 

"BIT7"- RESERVED 


(57) 

BITSTRING 

1 UCMPRSV8 

RESERVED 



88 

(58) ADDRESS 

4 

UCMPQHRR 

IEAVMQHR'S RETURN ADDR 

92 

(50 ADDRESS 

4 

UCMPSHRK 

POINTER TO IEAVSTAA'S HORKAREA 

96 

(60) BITSTRING 

1 •« • •••• 

1 

UCMPFLG1 

UCMPHERA 

MISCELLANEOUS FLAGS 

"BITO" COMMTASK IEEVHAIT EXTERNAL 

RESTART ATTEMPTED 

97 

(61) CHARACTER 

3 

UCMPRSV3 

RESERVED 

100 

(64) CHARACTER 

20 

UCMPRS01 

RESERVED 

INDIVIDUAL DEVICE ENTRY (UCME) FIXED EXTENSION 
(PRESENT IN 0S/VS2 ONLY) 


(0) 

STRUCTURE 

■a 

UCMEFEXT 

, UCME FIXED EXTENSION 

(0) 

BITSTRING 

i 

UCMEFLG1 

FLAGS FOR UCME FIXED EXTENSION 

1.. . 

• * • • 


UCMEFLGA 

"BITO"- IF 1, ATTENTION INDEX IN UCME- 
FATT IS VALID 

.1.. 

• • • • 


UCMEFLGB 

"BIT1"- IF 1, UCBSYSR FOR THIS DEVICE 
HAS FORCED TO 1 AND SHOULD BE RESTORED 
TO 0 

. .1. 

« • • • 


UCMEFLGC 

"BIT2,»C*X'"- RESERVED 

.. .1 

• • * * 


UCMEFLGD 

"BIT3,,C , X'"- RESERVED 


1.. . 


UCMEFLGE 

"BIT4,,C f X*"- RESERVED 


.1. . 


UCMEFLGF 

"BIT5,,C'X'"- RESERVED 


. .1. 


UCMEFLGG 

"BIT6,,C»X*"- RESERVED 


. . .1 


UCMEFLGH 

"BIT7 > /C'X'"- RESERVED 


UCM 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


UCM 

Data Area Descriptions 381 


















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


1 

(1) BITSTRING 

1 

UCMEFLG2 

RESERVED 

2 

(2) SIGNED 

1 

UCMEFATT 

ATTENTION INDEX. VALID ONLY IF UCMEFLGA 
IS 1. 

3 

(3) SIGNED 

1 

UCMEFSA1 

ATTENTION INDEX SAVED BY 1052 DEVICE 
SERVICE PROCESSOR 

4 

(4) ADDRESS 

4 

UCMEFPEX 

ADDRESS OF UCME PAGEABLE EXTENSION 

8 

(8) SIGNED 

1 

UCMEFSA2 

ATTENTION INDEX SAVED BY SUBSYS 

9 

(9) ADDRESS 

3 

UCMEFRV1 

RESERVED 


• » • « 11 • . 


UCMEFLEN 

"x-UCMEFEXT"- LENGTH OF A UCME FIXED 
EXTENSION 

INDIVIDUAL DEVICE ENTRY 

(UCME) PAGEABLE 

EXTENSION 

(PRESENT IN 0S/VS2 ONLY) 




0 

(0) STRUCTURE 

D 

UCMEPEXT 

, UCME PAGEABLE EXTENSION 

0 

(0) CHARACTER 

8 

UCMEPNME 

NAME OF THE SYSTEM COMPONENT WHICH IS 
USING THIS CONSOLE 

8 

(8) SIGNED 

2 

UCMEPAID 

ASID OF THE SYSTEM COMPONENT WHICH IS 
USING THIS CONSOLE 

10 

(A) BITSTRING 

2 

UCMEPAUT 

COPY OF UCMAUTH AT THE TIME THAT THE 
CONSOLE WAS OBTAINED BY A SYSTEM COMPO¬ 
NENT (SUBSYSTEM) 

12 

(C) BITSTRING 
1 ... .... 

1 

UCMEPFG1 

UCMEPJ3C 

UCME PAGEABLE EXTENSION FLAG BYTE 1 
"BITO" A JES3 CONSOLE HAS BEEN ASSOCI¬ 
ATED WITH THIS CONSOLE THROUGH THE SUB¬ 
SYSTEM CONSOLE SERVICE ROUTINE 

13 

(D) BITSTRING 

1 

UCMEPFG2 

RESERVED FLAG BYTE 2 

14 

(E) BITSTRING 

1 

UCMEPFG3 

RESERVED FLAG BYTE 3 

15 

<F) BITSTRING 
...1 .... 

1 

UCMEPFG4 

UCMEPLEN 

RESERVED FLAG BYTE 4 

"X-UCMEPEXT"- LENGTH OF A UCME PAGEABLE 
EXTENSION 


UCM 


UCM 

382 

MVS/370 Debug Hdbk Vol 5 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 






Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


CROSS REFERENCE 


NAME 


HEX 

VALUE 

Ml 

HEX 

OFFSET 

HEX 

VALUE 

NAME 

HEX 

OFFSET 

HEX 

VALUE 

MCSUCM 

0 

00 

UCMDEVA 

3F 

80 

UCMEFLGH 

0 

01 

UCM 

0 


UCMDEVB 

3F 

40 

UCMEFLG1 

0 


UCMAECB 

A 


UCMDEVC 

3F 


UCMEFLG2 

1 


UCMAECBA 

C 


UCMDEVCC 

3F 

20 

UCMEFPEX 

4 


UCMAF 

18 

80 

UCMDEVD 

3F 

10 

UCMEFRV1 

9 


UCMALTEN 

2C 


UCMDEVE 

3F 

08 

UCMEFSA1 

3 


UCMAMFA 

44 

08 

UCMDEVF 

3F 

04 

UCMEFSA2 

8 


UCMAMRF 

45 


UCMDEV6 

3F 

02 

UCMEIL 

0 


UCMAMRFA 

45 

80 

UCMDISP 

2A 


UCMEMCLS 

18 

02 

UCMAMRFF 

45 

40 

UCMDISPA 

2A 

80 

UCMEND 

4C 

00 

UCMAMRFR 

45 

10 

UCMDISPB 

2A 

40 

UCMEPAID 

8 


UCMAMRFS 

45 

20 

UCMDISPC 

2A 

20 

UCMEPAUT 

A 


UCMAMRMX 

12E 


UCMDISPD 

2A 

10 

UCMEPEXT 

0 


UCMARECB 

10 


UCMDISPE 

2A 

08 

UCMEPFG1 

C 


UCMASCB 

118 


UCMDISPF 

2A 

04 

UCMEPFG2 

D 


UCMATR 

19 


UCMDISP6 

2A 

02 

UCMEPFG3 

E 


UCMAT04 

19 

04 

UCMDISPH 

2A 

01 

UCMEPFG4 

F 


UCMAUTH 

28 


UCMDISPI 

2B 

80 

UCMEPJ3C 

C 

80 

UCMAUTHA 

28 


UCMDISPJ 

2B 

40 

UCMEPLEN 

F 

10 

UCMAUTHB 

29 


UCMDISPK 

2B 

20 

UCMEPNME 

0 


UCMAUTH1 

28 

80 

UCMDISPL 

2B 

10 

UCMESIZE 

4C 

50 

UCMAUTH2 

28 

40 

UCMDISPM 

2B 

08 

UCMEXIT 

0 


UCMAUTH3 

28 

20 

UCMDISPI 

2A 


UCMFAMRN 

44 


UCMBF 

18 

20 

UCMDISP2 

2B 


UCMFAMRP 

34 


UCMBFEXT 

F0 


UCMDOME 

4C 


UCMFAMRQ 

34 


UCMBMPFS 

ED 


UCMECB 

0 


UCMFAMRS 

4E 


UCMBRDST 

15C 


UCMECBFD 

0 

FD 

UCMFATCN 

24 


UCMCBID 

140 


UCMECBFE 

0 

FE 

UCMFEAMQ 

3C 


UCMCF 

18 

10 

UCMECBFF 

0 

FF 

UCMFEBSZ 

4F 


UCMCMDPT 

13C 


UCMEDEVX 

IB 


UCMFECBL 

1C 


UCMCMDQR 

134 


UCMEFATT 

2 


UCMFELEN 

2C 


UCMCMID 

58 


UCMEFEXT 

0 


UCMFELST 

30 


UCMCOMPC 

38 


UCMEFLEN 

9 

OC 

UCMFEQSD 

A 

20 

UCMCQECP 

154 


UCMEFLGA 

0 

80 

UCMFEXTA 

0 


UCMCTIC 

44 

80 

UCMEFLGB 

0 

40 

UCMFEXTP 

48 


UCMCTID 

FA 


UCMEFLGC 

0 

20 

UCMFE1ST 

28 


UCMDCB 

8 


UCMEFLGD 

0 

10 

UCMFFLG1 

8 


UCMDECB 

C 


UCMEFLGE 

0 

08 

UCMFFLG2 

9 


UCMDECBA 

14 


UCMEFLGF 

0 

04 

UCMFFLG3 

A 


UCMDESCD 

84 


UCMEFLGG 

0 

02 

UCMFIAMQ 

38 



UCM 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


UCM 

Data Area Descriptions 383 




Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


NAME 

HEX 

HEX 


HEX HEX 

NAME 

HEX 

HEX 

OFFSET_VALUE 

NAME 

OFFSET VALUE 

OFFSET 

VALUE 

UCMFIBSZ 

4C 


UCMFSV02 

4 

UCMMLAST 

40 


UCMFIQSD 

A 

40 

UCMFSV03 

8 

UCMMNECB 

D4 


UCMFIX 

44 

01 

UCMFSV04 

C 

UCMMNTR 

DO 


UCMFM6FS 

8 


UCMFSV05 

10 

UCMM0DE 

44 


UCMFMPFP 

54 


UCMFSV06 

14 

UCMMPFSN 

144 


UCMFMSGA 

8 

40 

UCMFSV07 

18 

UCMMQEND 

EO 


UCMFMSGE 

8 

80 

UCMFSV08 

1C 

UCMMQNXT 

E4 


UCMFMSGN 

8 

20 

UCMFSV09 

20 

UCMMQPTR 

DC 


UCMFMSG1 

8 

10 

UCMFSV10 

24 

UCMMSG 

3C 


UCMFMSG2 

8 

08 

UCMFSV11 

28 

UCMMSGA 

3C 

80 

UCMFMSG3 

8 

04 

UCMFSV12 

2C 

UCMMSGB 

3C 

40 

UCMFMSG4 

8 

02 

UCMFSV13 

30 

UCMMSGD 

3C 

10 

UCMFMSG5 

8 

01 

UCMFSV14 

34 

UCMMSGF 

3C 

04 

UCMFMSG6 

9 

80 

UCMFSV15 

38 

UCMMSG1 

3C 


UCMFMSG7 

9 

40 

UCMFSV16 

3C 

UCMMSG2 

3D 


UCMFMSG8 

9 

20 

UCMFSV17 

40 

UCMMSTXT 

0 


UCMFPPTR 

4 


UCMFSV18 

44 

UCMMTPLP 

130 


UCMFRAD 

21 


UCMFUCMF 

0 

UCMNAME 

10 


UCMFRBYT 

20 


UCMFXECB 

1C 

UCMNIPTR 

4 


UCMFRBO 

20 

80 

UCMF60WQ 

10 

UCMNPECB 

90 


UCMFRECB 

20 


UCMF75MR 

46 

UCMOAOEN 

30 


UCMFRMCP 

40 


UCMF80MR 

48 

UCMOECB 

8 


UCMFRQSD 

A 

80 

UCMF80HQ 

12 

UCM0ECBA 

10 


UCMFRRAD 

120 


UCMF95MR 

4A 

UCM0ECBH 

108 


UCMFRSVA 

9 

02 

UCMHCUCM 

5C 

UCM0ECBT 

IOC 


UCMFRSVB 

9 

01 

UCMHRDRT 

64 

UCM0F 

19 

80 

UCMFRSVC 

A 

10 

UCMID 

1A 

UCM0GCE 

44 

04 

UCMFRSVD 

A 

08 

UCMIECBA 

1C 

UCMORECP 

110 


UCMFRSVE 

A 

04 

UCMIECBF 

1C 

UCMOUTQ 

24 


UCMFRSVF 

A 

02 

UCMIECBP 

ID 

UCMOWTOR 

56 


UCMFRSVG 

A 

01 

UCMIF 

19 40 

UCMPAMRC 

18 


UCMFRSV1 

B 


UCMINTCB 

148 

UCMPAMRF 

1C 


UCMFRSV2 

C 


UCMJES3T 

128 

UCMPAMRN 

54 


UCMFRSV3 

14 


UCMLECB 

C 

UCMPAMRP 

48 


UCMFRSV4 

58 


UCMLF 

19 08 

UCMPAMRQ 

48 


UCMFRSV7 

9 iU 

10 

UCMLIST 

0 

UCMPAMRR 

20 


UCMFRSV8 

9 

08 

UCML0GAD 

94 

UCMPAMRS 

14 


UCMFRSV9 

9 

04 

UCMLSTP 

14 

UCMPDM1 

4 


UCMFSAVE 

0 


UCMMBEND 

FC 

UCMPEAMQ 

50 


UCMFSAVP 

50 


UCMMBPTR 

E8 

UCMPECB1 

40 


UCMFSVLN 

44 

48 

UCMMCENT 

0 

UCMPECB2 

44 


UCMFSV01 

0 


UCMMCS 

M 

O 

>3- 

UCMPELEN 

34 



UCM 

384 


MVS/370 Debug Hdbk Vol 5 


UCM 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


HEX HEX HEX HEX HEX HEX 


NAME 

OFFSET 

VALUE 

NAME 

OFFSET 

VALUE 

NAME 

OFFSET 

VAWJIK 

UCMPELST 

38 


UCMRP2AD 

F4 


UCMRSV58 

12D 

02 

UCMPEQSD 

56 

20 

UCMRQLM 

2D 


UCMRSV59 

12D 

01 

UCMPEXTA 

0 


UCMRQLM1 

EC 


UCMRSV61 

F8 


UCMPE1ST 

30 


UCMRQNR 

38 


UCMRSV62 

15E 


UCMPF 

18 

40 

UCMRSV01 

54 

80 

UCMRSV64 

4C 


UCMPFLG1 

60 


UCMRSV03 

66 


UCMRSV65 

9E 


UCMPIAMQ 

4C 


UCMRSV04 

9C 

20 

UCMRSV66 

44 

40 

UCMPIQSD 

56 

40 

UCMRSV05 

9C 

10 

UCMRSV69 

8C 


UCMPMPFD 

24 


UCMRSV06 

9C 

08 

UCMRSV7 0 

3C 

20 

UCMPNCC 

C 


UCMRSV07 

9C 

04 

UCMRSV71 

3C 

08 

UCMPNJSR 

28 


UCMRSV08 

9C 

02 

UCMRSV72 

98 


UCMPNMCC 

8 


UCMRSV09 

9C 

01 

UCMRSV7 3 

10 


UCMPQWRR 

58 


UCMRSV14 

44 

10 

UCMRSV7 4 

14 


UCMPRFX 

0 


UCMRSV15 

3 


UCMRSV75 

45 

08 

UCMPRFXP 

A4 


UCMRSV16 

19 

02 

UCMRSV76 

47 


UCMPRQSD 

56 

80 

UCMRSV17 

19 

01 

UCMRSV77 

54 


UCMPRSV1 

56 

10 

UCMRSV19 

28 

10 

UCMRSV79 

45 

04 

UCMPRSV3 

61 


UCMRSV20 

28 

08 

UCMRSV80 

45 

02 

UCMPRSV4 

56 

08 

UCMRSV21 

28 

04 

UCMRSV81 

45 

01 

UCMPRSV5 

56 

04 

UCMRSV22 

28 

02 

UCMRSV83 

3A 


UCMPRSV6 

56 

02 

UCMRSV23 

28 

01 

UCMRSV84 

0 


UCMPRSV7 

56 

01 

UCMRSV26 

3C 

02 

UCMRSV85 

2 


UCMPRSV8 

57 


UCMRSV27 

3C 

01 

UCMRTCD 

20 


UCMPRSV9 

3C 


UCMRSV30 

44 

08 

UCMRTCT 

2 


UCMPRS01 

64 


UCMRSV31 

44 

01 

UCMRV005 

2B 

04 

UCMPSNQB 

56 


UCMRSV35 

54 

01 

UCMRV006 

2B 

02 

UCMPSWRK 

5C 


UCMRSV42 

12C 


UCMRV007 

2B 

01 

UCMPUCMP 

0 


UCMRSV43 

12C 

80 

UCMRV008 

8 

01 

UCMPHERA 

60 

80 

UCMRSV44 

12C 

40 

UCMR9SV 

CC 


UCMPHQE 

4 


UCMRSV45 

12C 

20 

(JCMSAVE0 

4 


UCMPHQES 

10 


UCMRSV46 

12C 

10 

UCMSAVE4 

8C 


UCMPXA 

40 


UCMRSV47 

12C 

08 

UCMSBR 

4 


UCMPXB 

44 


UCMRSV48 

12C 

04 

UCMSDS1 

9C 


UCMQRTN 

80 


UCMRSV49 

12C 

02 

UCMSDS1A 

9C 

80 

UCMQSCAN 

138 


UCMRSV50 

12C 

01 

UCMSDS1B 

9C 

40 

UCMRCT 

44 


UCMRSV51 

12D 


UCMSDS2 

9D 


UCMRCTA 

45 


UCMRSV52 

12D 

80 

UCMSDS5 

44 


UCMRECBA 

18 


UCMRSV53 

12D 

40 

UCMSDS5A 

44 

80 

UCMROUTC 

80 


UCMRSV54 

12D 

20 

UCMSDS5B 

44 

40 

UCMRPYI 

20 


UCMRSV55 

12D 

10 

UCMSDS5C 

44 

20 

UCMRPYL 

1 


UCMRSV56 

12D 

08 

UCMSDS5D 

44 

10 

UCMRPYQ 

1C 


UCMRSV57 

12D 

04 

UCMSDS5F 

44 

04 

UCM 








UCM 

LC28-1389-0 

(c) Copyright IBM 

Corp. 1980, 

1985 


Data Area Descriptions 385 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


HEX HEX HEX HEX HEX HEX 


NAME 

OFFSET 

VALUE 

NAME OFFSET 

VALUE 

NAME OFFSET 

VALUE 

UCMSDS5G 

44 

02 

UCMSYSO 

55 

02 

UCM1HD 

68 


UCMSFLGS 

54 


UCMSYSP 

55 

01 

UCM2DSTR 

8 

10 

UCMSFLG1 

54 


UCMTA 

18 

08 

UCM2DTAK 

8 

20 

UCMSFLG2 

55 


UCMTB 

18 

04 

UCM2EXT 

0 


UCMSP13 

46 

01 

UCMTC 

18 

01 

UCM2FAIL 

8 

02 

UCMSP132 

46 

02 

UCMTPUTA 

44 

20 

UCM2PST 

4 


UCMSSIBP 

158 


UCMTRECB 

D8 


UCM2PTR 

AO 


UCMSTS 

18 


UCMUCB 

C 


UCM2REC 

8 

04 

UCMSVAO 

4 


UCMUEXIT 

61 


UCM2SDWA 

8 

80 

UCMSVBO 

8 


UCMUF 

19 

10 

UCM2SENT 

8 

40 

UCMSVCO 

C 


UCMVDATA 

48 


UCM2SFLG 

8 


UCMSVDO 

10 


UCMVEA 

48 


UCM2STA 

8 


UCMSVEO 

14 


UCMVEL 

50 


UCM2STAA 

9 


UCMSVFO 

18 


UCMVEZ 

4C 


UCM2T0KN 

C 


UCMSVGO 

1C 


UCMVHRSN 

3F 

01 

UCM2WD 

6C 


UCMSVHO 

20 


UCMVRID 

46 

02 

UCM2WT0I 

8 

08 

UCMSVIO 

24 


UCMVRSN 

46 


UCM2250 

IB 

01 

UCMSVJO 

28 


UCMVWTCB 

14C 


UCM2260 

IB 

02 

UCMSVKO 

2C 


UCMWAKUP 

124 


UCM2540 

IB 

03 

UCMSVLO 

30 


UCMWECBH 

100 


UCM2740 

IB 

04 

UCMSVMO 

34 


UCMWECBT 

104 


UCM3WD 

70 


UCMSVNO 

38 


UCMWLAST 

34 


UCM3066 

IB 

05 

UCMSVOO 

3C 


UCMWQADA 

150 


UCM3211 

IB 

06 

UCMSVPO 

40 


UCMWQCNT 

30 


UCM3215 

IB 

07 

UCMSVQO 

44 


UCMWQECP 

114 


UCM32771 

IB 

08 

UCMSVRO 

48 


UCMWQEND 

3C 


UCM32772 

IB 

09 

UCMSWCH 

11C 


UCMWQLM 

2E 


UCM32781 

IB 

OA 

UCMSHSA1 

84 


UCMWQLM1 

EE 


UCM32782 

IB 

OB 

UCMSWSA2 

88 


UCMWQNR 

34 


UCM32783 

IB 

OD 

UCMSYSB 

54 

40 

UCMWQRSV 

30 


UCM32784 

IB 

OE 

UCMSYSC 

54 

20 

UCMWTOQ 

18 


UCM3284 

IB 

13 

UCMSYSD 

54 

10 

UCMWTOX 

50 


UCM3782A 

IB 

OC 

UCMSYSE 

54 

08 

UCMXA 

1A 


UCM3792A 

IB 

OF 

UCMSYSF 

54 

04 

UCMXB 

1C 


UCM3792B 

IB 

10 

UCMSYSG 

54 

02 

UCMXCT 

60 


UCM3792C 

IB 

14 

UCMSYSI 

55 

80 

UCMXECB 

0 


UCM3793A 

IB 

11 

UCMSYSJ 

55 

40 

UCMXECBA 

8 


UCM3793B 

IB 

12 

UCMSYSK 

55 

20 

UCMXF 

19 

20 

UCM4WD 

74 


UCMSYSL 

55 

10 

UCMXOR 

3E 


UCM5WD 

78 


UCMSYSM 

55 

08 

UCMXSA 

68 


UCM6WD 

7C 


UCMSYSN 

55 

04 








UCM 

386 


MVS/370 Debug Hdbk Vol 5 


UCM 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


UPI 


Common Name : TSO User Profile Table 

Macro ID : IKJUPT 

DSECT Name : UPT 

Created by : IKJEFLA 

Subpool and Key t Subpool 0 and key 8 

Size : 24 bytes 

Pointed to by : CPPLUPT field of the CPPL data area 
Serialization : 

Function : Contains information stored in UADS, used by LOGON/LOGOFF* 
TMP, and CPs. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 (0) STRUCTURE 0 UPT 


0 (0) SIGNED 4 


0 (0) CHARACTER 2 RESERVED 

2 (2) CHARACTER 10 UPTUSER RESERVED FOR INSTALLATION USE 


12 

(C) HEX 

i 

UPTSWS 


1 » i < •••• 


UPTRCVR 


• X • • • • * * 


UPTNPRM 


•♦X• •••• 


UPTMID 


• ••X • • • • 


UPTNCOM 


•••• X••• 


UPTPAUS 


• ••• •X • • 


UPTALD 


• ••« •»X • 


UPTMODE 


• ••• • • » 1 


UPTWTP 

13 

(D) CHARACTER 

i 

UPTCDEL 

14 

CE) CHARACTER 

i 

UPTLDEL 

15 

(F) CHARACTER 

i 



USERS ENVIRONMENT SNITCHES 

n X'80 ,n EDIT RECOVER OPTION IS REQUESTED 

DEFLT 

"X'40*" NO PROMPTING IS TO BE DONE 
"X^O*" PRINT MESSAGE IDENTIFIERS 
"X'lO*" NO USER COMMUNICATION ALLOWED 
VIA SEND COMMAND 
"X'08*" PAUSE FOR *?• WHEN IN 
NON-INTERACTIVE MODE 

"X'04 ,n ATTN HAS BEEN SPECIFIED AS LINE 
DELETE CHAR 

"X , 02 ,n MODE MESSAGES DESIRED 
"X'01 ,n WRITE TO PROGRAMMER MESSAGES 
DESIRED 

CHAR DELETE CHARACTER 
LINE DELETE CHARACTER 
RESERVED 


UPT 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


UPT 

Data Area Descriptions 387 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


16 (10) CHARACTER 7 UPTPREFX 

23 (17) BITSTRING 1 UPTPREFL 


DSNAME PREFIX 

LENGTH OF DSNAME PREFIX 


UPT 

3S8 


MVS/370 Debug Hdbk Vol 5 


LC28-1389-0 (c) Copyright IBM Corp. 1980 


UPT 

1985 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


VFCB 


Common Name : Virtual Fetch Control Block 

Macro ID : 1HAVFCB 

DSECT Name : VFCB 

Created by : CSVVFCRE 

Subpool and Key : Subpool 241 and key 0 

Size : 32 bytes 

Pointed to by : CVTVFCB 

Serialization : Compare and Swap 

Function : Contains information concerning status of Virtual Fetch, the 
address of the Virtual Fetch hash table and the Virtual Fetch ECB. 

OFFS gTS_IYEI_ LENGTH NAME _ DESCRIPTION 


0 

(0) 

STRUCTURE 

32 

VFCB 

Virtual Fetch Control Block 

0 

(0) 

CHARACTER 

4 

VFCBID 

Control block ID ("VFCB") 

4 

(4) 

ADDRESS 

4 

VFCBASCB 

Address of Virtual Fetch address space 
ASCB 

8 

(8) 

CHARACTER 

8 

VFCBRESH 

Refresh number of this Virtual Fetch in 
TIMER units 

8 

C8) 

SIGNED 

4 

VFCBRSH1 

First half of refresh value 

12 

(C) 

SIGNED 

4 

VFCBRSH2 

Second half of refresh value 

16 

(10) 

ADDRESS 

4 

VFCBHSHP 

Address of hash table 

20 

(14) 

UNSIGNED 

4 

VFCBHSHV 

Hash algorithm divisor 

24 

(18) 

SIGNED 

4 

VFCBECB 

Refresh ECB 

28 

(1C) 

UNSIGNED 

1 

VFCBLVEL 

Level number of this VFCB (currently 


level=0) 


VFCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


VFCB 

Data Area Descriptions 389 












Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


29 (ID) UNSIGNED 
1 ... • • • • 


1 VFCBFLAG 
VFCBUILT 


.1 . 

. .1 . 

...1 _ 

_ 1 ... 

. 1 .. 

. 1 . 

• • • • > * • 1 

30 (IE) CHARACTER 


VFCBRES2 
VFCBRES3 
VFCBRESA 
VFCBRES5 
VFCBRES6 
VFCBRES7 
VFCBRES8 
2 VFCBRES9 


Flag byte 

Virtual Fetch has been built and is ful¬ 
ly operational, (turned on after the 
VFCB is set up, and just before entering 
WAIT processing. It is initially off, 
and will be turned off before updating 
the VFCB, and whenever the ESTAE is 
entered). 

Reserved flag 
Reserved flag 
Reserved flag 
Reserved flag 
Reserved flag 
Reserved flag 
Reserved flag 
Reserved half word 


I 


VFCB 

390 


MVS/370 Debug Hdbk Vol 5 


VFCB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


VRAMAP 


Common Name : Variable Recording Area Mapping Macro 

Macro XD : IHAVRA 

DSECT Name : VRAMAP 

Created by : Variable 

Subpool and Key : Variable 

Size : Variable 

Pointed to by : Variable 

Serialization : Variable 

Function : Provides a key/ length/ data mapping that can be used to 
structure the contents of an area with variable length service data/ 
such as the SDWA variable recording area (SDHAVRA). (Users of the 
SDNAVRA turn on the SDWAVRAM bit to indicate the SDWAVRA is in key/ 
length/ data format.) 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) 

STRUCTURE 

0 

VRAMAP 


0 

(0) 

SIGNED 

2 

VRAKL 

USE THIS LABEL TO OBTAIN THE LENGTH OF 
THE NEXT TWO FIELDS. 

0 

(0) 

SIGNED 

1 

VRAKEY 

KEY TO IDENTIFY THE DATA THAT FOLLOWS. 
THE POSSIBLE VALUES FOR THIS FIELD ARE 
GIVEN AS CONSTANTS THAT FOLLOW THE VRA¬ 
MAP DECLARE. 

1 

(1) 

SIGNED 

1 

VRALEN 

LENGTH OF THE DATA THAT FOLLOWS. THE 
CONSTANTS FOR VRAKEY INDICATE SOME 
RECOMMENDED LENGTHS. 

2 

(2) 

SIGNED 

1 

VRADAT 

VARIABLE LENGTH DATA. THIS DATA IS FOL¬ 
LOWED BY ADDITIONAL KEY, LENGTH, AND 

DATA FIELDS UNTIL ALL USER DATA IS SUP¬ 
PLIED. 


• • « 

• • • X • 


VRALENKL 

"VRADAT-VRAKL" LENGTH OF THE VRAKL FIELD 


(VRAKEY AND VRALEN), FOR USE IN UPDATING 
THE POINTER TO THE NEXT FIELD IN THE 
RECORDING AREA. 


VRAMAP 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


VRAMAP 

Data Area Descriptions 391 





Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


THE FOLLOWING CONSTANTS GIVE THE VALUES THAT ARE SUPPORTED FOR 
VRAKEY FIELDS. 

THE MEANINGS OF KEYS 200 C'CB'X) TO 224 CEO'X) MAY BE ASSIGNED 
BY EACH RECOVERY ROUTINE. THE MEANINGS OF THE OTHER KEYS ARE 
ASSIGNED BY THE OWNER OF THE IHAVRA MACRO. 

A KEY CAN BE REPEATED IN THE VARIABLE RECORDING AREA, IN ORDER 
TO SUPPLY SEVERAL FOOTPRINT AREAS, ETC. 

THE SDWACID, SDWASC, SDWAMLVL, SDWACRC, AND SDWARRL FIELDS 
SHOULD BE USED INSTEAD OF THE VRACOM, VRASC, VRALVL, VRARC, 

AND VRARRL KEYS FOR 0S/VS2 JBB1226 LEVEL MODULES. 


1 


• • • • 


..1 


• • # • 


..11 


. 1 .. 


. 1.1 


. 11 . 


VRACOM "1" THE VRADAT DATA IS THE 5-BYTE EBCDIC 

COMPONENT ID (SUCH AS SC1CR). USE THE 
SDWACID FIELD INSTEAD OF THIS KEY. SEE 
THE ABOVE NOTE. 

VRASC "2" THE DATA IS EBCDIC TEXT TO IDENTIFY 

THE SUBCOMPONENT OR SUBFUNCTION THAT 
FAILED (SUCH AS RSM-PGFIX) 

VRALVL "3" THE DATA IS THE EBCDIC LEVEL FOR THE 

FAILING MODULE, IN COMPILEDATEBBPTF—OR 
SU OR PRODUCT NUMBER--FORMAT (SUCH AS 
78.256 UZ86400), AS PRODUCED BY THE PLS 
ID MACRO ON A PLS PROCEDURE STATEMENT OR 
BY THE BAL MODID MACRO 

VRADT "4" THE DATA IS THE EBCDIC ASSEMBLY DATE 

FOR THE FAILING MODULE, IN YY.DDD OR 
MM/DD/YY FORMAT, IF NOT SUPPLIED VIA 
VRALVL 

VRAPTF "5” THE DATA IS THE 7-BYTE EBCDIC PTF, 

SU, OR PRODUCT NUMBER FOR THE FAILING 
MODULE, (SUCH AS UZ86400), IF NOT SUP¬ 
PLIED VIA VRALVL 

VRARC "6" THE DATA IS A HEXADECIMAL RETURN OR 

REASON CODE OR OTHER CODE FOR THE FAIL¬ 
URE. (SUPPLY THIS EVEN IF GIVEN IN REG- 


VRAMAP 

392 MVS/370 Debug Hdbk Vol 5 


VRAMAP 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 





Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 



ISTER 15.) 

VRAQVOD "7" THE DATA IS THE REGISTER 15 AND 

ERROR PORTIONS OF THE QUEUE VERIFIER 
OUTPUT DATA* AS MAPPED BY THE IHAQVOD 
MACRO 

VRARRP "16" CIO'X) THE DATA IS THE HEXADECIMAL 

RECOVERY ROUTINE PARAMETER AREA; WITH 24 
BYTE MAXIMUM LENGTH IF FRR 
VRACBM ”17" (*11'X) THE DATA IS THE MAPPING 

MACRO NAME FOR THE CONTROL BLOCK IN THE 
NEXT DATA FIELD (SUCH AS IKJTCB) 

VRACB "18" (*12*X) THE DATA IS THE HEXADECIMAL 

CONTENTS OF A CONTROL BLOCK OR A PORTION 
OF A CONTROL BLOCK. 

VRACBF "19" ('13'X) THE DATA IS THE NAME OF A 

CONTROL BLOCK FIELD. IT IS PRECEDED BY 
THE MAPPING MACRO NAME (SEE VRACBM) AND 
IT IS FOLLOWED BY THE VRACB KEY AND 
DATA, WHICH CAN BE A SINGLE CONTROL 
BLOCK FIELD OR A SECTION OF A CONTROL 
BLOCK, STARTING WITH THIS FIELD. 

. ..1 .1.. VRACBA "20" (*14'X) THE DATA IS THE ADDRESS OF 

A CONTROL BLOCK (WHICH MAY BE IDENTIFIED 
BY VRACBM DATA). 

. ..1 .1.1 VRACBO "21" (*15'X) THE DATA IS THE OFFSET OF A 

CONTROL BLOCK FIELD. IT IS PRECEDED BY 
THE MAPPING MACRO NAME (SEE VRACBM) AND 
IT IS FOLLOWED BY THE VRACB KEY AND 
DATA, WHICH CAN BE A SINGLE FIELD OR A 
SECTION OF A CONTROL BLOCK, STARTING AT 
THIS OFFSET. (THE VRACBO KEY IS USEFUL 
IF THE VRACBF DATA TAKES UP TOO MUCH VRA 
SPACE.) 

VRAPLI "32" ('20'X) THE DATA IS EBCDIC TEXT TO 

IDENTIFY THE PARAMETER LIST IN THE NEXT 
DATA FIELD 

VRAPL "33" ('21’X) THE DATA IS THE HEXADECIMAL 

CONTENTS OF A PARAMETER LIST 
VRAFPI "34" (*22'X) THE DATA IS EBCDIC TEXT TO 

IDENTIFY THE FOOTPRINT AREA DATA IN THE 



.Ill 

...1 .... 

...1 ...1 

...1 .. 1 . 

...1 ..11 


t 


VRAMAP 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


VRAMAP 

Data Area Descriptions 393 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME 


..1. ..11 

VRAFP 

• * 1 « * 1 • • 

VRAPA 


. .1. 

.1.1 

VRAP2 

..1. 

.11. 

VRALK 

. .1. 

.111 

VRAWAI 

. .1. 

1... 

VRAWA 

. .1. 

1. .1 

VRAWAP 

. .11 

.... 

VRALBL 

. .11 

.. .1 

VRARRL 


..11 ..11 VRAMID 


DESCRIPTION 
NEXT DATA FIELD 

"35" (*23'X) THE DATA IS THE HEXADECIMAL 
CONTENTS OF A FOOTPRINT AREA 
"36" (*24'X) THE DATA DESCRIBES THE EXE¬ 
CUTION PATH UP TO THE TIME OF THE ERROR. 
IT CONSISTS OF FOUR (EBCDIC) CHARACTERS 
TO IDENTIFY EACH SUBROUTINE OR MODULE 
THAT WAS INVOKED. THE FOUR RIGHTMOST 
CHARACTERS IDENTIFY THE LAST ROUTINE 
THAT WAS INVOKED. 

"37" C'25'X) THE DATA DESCRIBES THE EXE¬ 
CUTION PATH IN THE SAME FORMAT AS THE 
VRAPA KEY, BUT THE ID IS TWO CHARACTERS, 
NOT FOUR 

"38" ('26’X) THE DATA IS THE EBCDIC NAME 

OF A LOCK THAT IS HELD 

"39" (*27'X) THE DATA IS EBCDIC TEXT TO 

IDENTIFY THE WORK AREA IN THE NEXT DATA 

FIELD 

"40" ('28'X) THE DATA IS THE HEXADECIMAL 
CONTENTS OF A WORK AREA THAT HAS NO MAP¬ 
PING MACRO 

"41" ('29'X) THE DATA IS THE ADDRESS OF 
A WORK AREA (WHICH MAY BE IDENTIFIED BY 
VRAWAI DATA) 

"48" ('30'X) THE DATA IS THE EBCDIC 
LABEL OF THE SECTION OF THE MODULE THAT 
FAILED, SUCH AS THE CSECT THAT FAILED 
(IF THIS SECTION IS NOT AT THE BEGINNING 
OF THE FAILING MICROFICHE MODULE, 
SDWACSCT) 

"49" (*31'X) THE DATA IS THE EBCDIC 
LABEL OF THE RECOVERY ROUTINE HANDLING 
THE ERROR, IF THE RECOVERY ROUTINE IS 
NOT AT THE BEGINNING OF THE MICROFICHE 
MODULE, SDWAREXN 

"51" (*33*X) THE DATA IS AN EBCDIC MES¬ 
SAGE ID FOR A MESSAGE RELATED TO THE 
FAILURE, WITH MESSAGE TEXT OPTIONALLY 


VRAMAP 

394 MVS/370 Debug Hdbk Vol 5 


VRAMAP 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 



«<1* •••• 


WMJMDSPC 

MUST BE ZERO 


...1 _ 


NMJMDSPD 

QUEUED TO HARDCOPY 


_ 1... 


WMJMDSPE 

MUST BE ZERO 


.1.. 


NMJMDSPF 

MESSAGE TO BE DOM'ED 


• ••• • • 1 • 


NMJMDSPG 

PROCESSING TEMPORARILY SUSPENDED 


« • * • « • » 1 


NMJMDSPH 

MSG ISSUED BY AUTH USER 

161 

(Al) CHARACTER 

2 

WMJMASID 

ASID OF USER 

163 

(A3) BITSTRING 

1 

WMJMBUF 

BUFFER STATUS FLAGS 


1. 


WMJMBUFA 

NQE AVAILABLE 


.1. 


NMJMBUFB 

NQE IN USE 


. .1. 


WMJMBUFC 

READY FOR HARDCOPY 


...1 _ 


NMJMBUFD 

NQE ACQUIRED BY GETMAIN 


_ 1... 


NMJMBUFE 

NQE SERVICED 


.1.. 


WMJMBUFF 

TPUT TO DO 


.1. 


WMJMBUFG 

NQE SUPPRESSED BY MPF 


. 1 


WMJMTRCD 

MAJOR NQE HAS BEEN MASTER TRACED 

164 

(A4) ADDRESS 

4 

HMJMTCB 

ADDR OF ISSUER'S TCB 

168 

(A8) ADDRESS 

1 

WMJMRTCT 

ROUTED COUNT 

169 

(A9) ADDRESS 

3 

NMJMSEQ 

SEQUENCE NUMBER 

172 

(AC) CHARACTER 

2 

NMJMCS 

MCS FLAGS 

172 

(AC) BITSTRING 

1 

NMJMCS1 

1ST BYTE OF MCS FLAGS 


1. 


WMJMCS1A 

ROUTE AND DESCRIPTOR CODES EXIST 


.1. 


NMJMCS1B 

QUEUE BY ID TO ACTIVE CONSOLE 


■ 4 1 ■ 


NMJMCS1C 

COMMAND RESPONSE 


• *•1 • • • • 


NMJMCSID 

MESSAGE TYPE FIELD PRESENT 


_ 1 ... 


WMJMCS1E 

ACCEPTED REPLY TO A NTOR 


. 1 . . 


NMJMCS1F 

BROADCAST (ROUTE TO ALL ACTIVE CONSOLES) 


. 1 . 


NMJMCS1G 

QUEUE TO HARDCOPY ONLY 


. 1 


NMJMCS1H 

QUEUE UNCONDITIONALLY BY ID TO CONSOLE 

173 

(AD) BITSTRING 

1 

NMJMCS2 

2ND BYTE OF MCS FLAGS 


1 . 


NMJMCS2A 

DO NOT TIME STAMP 


• 1 • • ■ • • • 


NMJMCS2B 

MLNTO 


. .1 . 


NMJMCS2C 

PRIMARY SUBSYSTEM USE ONLY 


*••1 •••« 


NQERSV47 

RESERVED 


*••• 1 • • • 


NQERSV48 

RESERVED 


. 1 .. 


NMJMCS2F 

BYPASS HARDCOPY QUEUEING 


»»* ■ .. 1 . 


NQERSV49 

RESERVED 


WQE 

LC28-1389-0 (c) Copyright IBM Corr. 1980, 1985 


WQE 

Data Area Descriptions 415 



















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 



.1 


WQERSV11 

RESERVED 

174 

(AE) CHARACTER 

2 

WMJMMT 

MESSAGE TYPE FLAGS 

174 

(AE) BITSTRING 

1 

WMJMMT1 

1ST BYTE OF MESSAGE TYPE FLAGS 


1. 


WMJMMT1A 

DISPLAY JOBNAMES 


.1. 


WMJMMT1B 

DISPLAY STATUS 


. .1. 


WQERSVA6 

RESERVED WMJMMT1C*** 


...1 _ 


WMJMMT1D 

MUST BE ZERO 


_ 1... 


MQERSV50 

RESERVED 


.1. . 


WMJMMT1F 

MONITOR SESS 


•••• ••1• 


WI3ERSV51 

RESERVED 


•»«t i«*l 


WQERSV52 

RESERVED 

175 

(AF) BITSTRING 

1 

WMJMMT2 

2ND BYTE OF MESSAGE TYPE FLAGS 

176 

(BO) CHARACTER 

4 

WMJMRTC 

ROUTING CODES 

176 

(BO) BITSTRING 

1 

WMJMRCT1 

1ST BYTE OF ROUTING CODES 


111! •••• 


WMJMRCTA 

MASTER CONSOLE 


• X • • •••• 


WMJMRCTB 

MASTER CONSOLE INFO 


• » 1 • • • • • 


WMJMRCTC 

TAPE POOL 


.. .1 _ 


WMJMRCTD 

DIRECT ACCESS POOL 


• • • • X • • • 


WMJMRCTE 

TAPE LIBRARY 


• ••• • 1 * • 


WMJMRCTF 

DISK LIBRARY 


• • •« • • X • 


WMJMRCTG 

UNIT RECORD POOL 


• • * * • • • X 


WMJMRCTH 

TELEPROCESSING CONTROL 

177 

(Bl) BITSTRING 

1 

WMJMRCT2 

2ND BYTE OF ROUTING CODES 


1 • • • •••• 


WMJMRCTI 

SYSTEM SECURITY 


• X • • 


WMJMRCTJ 

SYSTEM/ERROR MAINTENANCE 


..1. 


WMJMRCTK 

PROGRAMMER INFORMATION 


..1 _ 


WMJMRCTL 

EMULATOR INFORMATION 


• 1 • • • 


WMJMRCTM 

USER ROUTING CODE 


• ••• • X • • 


WMJMRCTN 

USER ROUTING CODE 


• ••• • • 1 • 


WMJMRCTO 

USER ROUTING CODE 


«* * * • • • X 


WQERSV53 

RESERVED 

178 

(B2) BITSTRING 

1 

WMJMRCT3 

3RD BYTE OF ROUTING CODES 

179 

(B3) BITSTRING 

1 

WMJMRCT4 

4TH BYTE OF ROUTING CODES 

180 

(B4) CHARACTER 

1 

WMJMUID 

UCM ENTRY ID 

181 

(B5) CHARACTER 

1 

WMJFLG1 

MISCELLANEOUS FLAGS 


X « • • •••• 


WMJFLG11 

THIS MESSAGE WAS PROCESSED WHILE MPF MAS 
ACTIVE AND HARDCOPY WAS AVAILABLE 


• X • • •••• 


WMJFLG12 

RESERVED 


WQE 

416 


MVS/370 Debug Hdbk Vol 5 


WQE 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 














Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 



. . 1. 


WMJFLG13 

RESERVED 


. . .1 _ 


WMJFLG14 

RESERVED 


_ 1... 


WMJFLG15 

RESERVED 


.1. . 


WMJFLG16 

RESERVED 


.1. 


WMJFLG17 

RESERVED 


.1 


WMJFLG18 

RESERVED 

182 

(B6) UNSIGNED 

2 

WQERSV54 

RESERVED 

184 

(B8) CHARACTER 

4 

WMJMDEC 

DESCRIPTOR CODES 

184 

(B8) BITSTRING 

1 

WMJMDEC1 

1ST BYTE OF DESCRIPTOR CODES 


1. 


WMJMDECA 

SYSTEM FAILURE MESSAGE 


.1. 


WMJMDECB 

IMMEDIATE ACTION REQUIRED MESSAGE 


• * 1 • 


WMJMDECC 

EVENTUAL ACTION REQUIRED MESSAGE 


...1 _ 


WMJMDECD 

SYSTEM STATUS MESSAGE 


_ 1 ... 


WMJMDECE 

IMMEDIATE COMMAND RESPONSE MESSAGE 


. 1 . . 


WMJMDECF 

JOB STATUS MESSAGE 


.1. 


WMJMDECG 

APPLICATION PROGRAM/ PROCESSOR MESSAGE 


.1 


WMJMDECH 

OUT-OF-LINE MESSAGE 

185 

(B9) BITSTRING 

1 

WMJMDEC2 

2ND BYTE OF DESCRIPTOR CODES 


1. 


WMJMDECI 

DESCRIPTOR CODE 9 


• 1 * • • • • • 


WMJMDECJ 

DESCRIPTOR CODE 10 


»• X • •••• 


HMJMDECK 

CRITICAL EVENTUAL ACTION MSG DESCRIPTOR 
CODE 11 


•••X •••• 


WQERSV57 

RESERVED 


• ••• X • • • 


WQERSV58 

RESERVED 


• ••• • X • • 


WQERSV59 

RESERVED 


• • • 1 • 


WQERSV60 

RESERVED 


.X 


WQERSV61 

RESERVED 

186 

(BA) BITSTRING 

1 

WMJMDEC3 

3RD BYTE OF DESCRIPTOR CODES RESERVED 

187 

(BB) BITSTRING 

1 

WMJMDEC4 

4TH BYTE OF DESCRIPTOR CODES RESERVED 

188 

(BC) ADDRESS 

4 

WMJMJTCB 

ADDR OF JOB STEP TCB 

192 

(CO) UNSIGNED 

1 

WMJMVRSN 

VERSION LEVEL 

193 

(Cl) CHARACTER 

3 

WMJMRV98 

RESERVED 

196 

(C4) CHARACTER 

8 

WMJMSID 

THE ID OF THE SYSTEM ON WHICH THIS MES¬ 
SAGE WAS ISSUED 


WQE 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


WQE 

Data Area Descriptions 417 

















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


204 

(CC) ADDRESS 

20 

MMJMRV99 

RESERVED 

0 

(0) STRUCTURE 

224 

WMNM 

START OF MINOR WQE 

0 

(0) ADDRESS 

4 

WMNMEXT 

POINTER TO SECOND HALF OF WQE 

0 

(0) ADDRESS 

1 

WMNMUC1 

USE COUNT 1 

1 

(1) ADDRESS 

3 

WMNMNX1 

ADDRESS OF SECOND HALF OF WQE OR ZERO 

4 

(4) BITSTRING 

1 

WMNMML1 

MLWTO FLAGS FOR FIRST MESSAGE 


1 . 


WQERSV62 

RESERVED 


.1. 


WMNMML1B 

MAJOR WQE 


• • 1 « •••• 


WMNMML1C 

MINOR WQE 


• ••1 •••• 


WMNMML1D 

CHAIN ALTERED 


_ 1... 


WMNMML1E 

WTL ISSUED 


. 1 .. 


WMNMML1F 

MINOR WQE FOR ABEND 


.1. 


WMNMML1G 

SERVICE THIS CHAIN 


•••• •••X 


WMNMML1H 

MINOR WQE ACQUIRED VIA GETMAIN 

5 

(5) BITSTRING 

1 

WMNMLT1 

LINE TYPE FLAGS FOR FIRST MESSAGE 


1 • • • •••• 


WMNMLT1A 

CONTROL LINE 


.1. 


WMNMLT1B 

LABEL LINE 


• • 1 » *•»» 


WMNMLT1C 

DATA LINE 


...1 _ 


WMNMLT1D 

END INDICATOR 


_ 1... 


WQERSV63 

RESERVED 


.1. . 


WQERSV64 

RESERVED 


. 1. 


WQERSV65 

RESERVED 


• •«* • • • 1 


WQERSV66 

RESERVED 

6 

(6) ADDRESS 

1 

WQERSV67 

RESERVED 

7 

(7) ADDRESS 

1 

WMNMTL1 

LENGTH OF FIRST MESSAGE TEXT 

8 

(8) CHARACTER 

4 

WMNMHCT1 

HARDCOPY ID FOR FIRST MESSAGE 

12 

(C) CHARACTER 

72 

WMNMTXT1 

FIRST MESSAGE TEXT (MAXIMUM 72 BYTES) 

84 

(54) BITSTRING 

1 

WMNMST1 

STATUS FLAGS 


X • • • •••• 


WMNMTPD1 

TPUT DONE 


• X • • 


WMNMTRC1 

FIRST MINOR WQE HAS BEEN MASTER TRACED 


••X* •••• 


WQERSVA9 

RESERVED 


• ••X * *«» 


WQERSVB1 

RESERVED 


• ••• 1 1 » « 


WQERSVB2 

RESERVED 


• • • » • 1 • • 


WQERSVB3 

RESERVED 

WQE 




WQE 

418 

MVS/370 Debug Hdbk 

Vol 

5 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 



















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 




WQERSVB4 

RESERVED 


.1 

WQERSVB5 

RESERVED 

85 

(55) CHARACTER 

3 WQERSVB6 

RESERVED 


88 

(58) ADDRESS 

8 

WQERSVB7 

RESERVED 

96 

(60) ADDRESS 

1 

WMNMUC2 

USE COUNT 2 

97 

(61) ADDRESS 

3 

WMNMNX2 

ADDRESS OF NEXT MINOR WQE OR ZERO 

100 

(64) BITSTRING 

1 

WMNMML2 

MLWTO FLAGS FOR SECOND MESSAGE 


1 . 


WQERSV68 

RESERVED 


.1. 


WMNMML2B 

MAJOR WQE 


..1 . 


WMNMML2C 

MINOR WQE 


.. .1 _ 


WMNMML2D 

CHAIN ALTERED 


_ I... 


WMNMML2E 

WTL ISSUED 


. 1. . 


WQERSV69 

RESERVED 


. 1. 


WMNMML2G 

SERVICE THIS CHAIN 


.1 


WMNMML2H 

LINE 2 AVAILABLE 

101 

(65) BITSTRING 

1 

WMNMLT2 

LINE TYPE FLAGS FOR SECOND MESSAGE 


1 . 


WMNMLT2A 

CONTROL LINE 


.1. 


WMNMLT2B 

LABEL LINE 


• •1* •••• 


WMNMLT2C 

DATA LINE 


• ••1 • • 11 


WMNMLT2D 

END INDICATOR 


- 1... 


WQERSV70 

RESERVED 


. 1. . 


WQERSV71 

RESERVED 


. 1. 


WQERSV72 

RESERVED 


. 1 


WQERSV7 3 

RESERVED 

102 

(66) ADDRESS 

1 

WQERSV74 

RESERVED 

103 

(67) ADDRESS 

1 

WMNMTL2 

LENGTH OF SECOND MESSAGE TEXT 

104 

(68) CHARACTER 

4 

WMNMHCT2 

HARDCOPY ID FOR SECOND MESSAGE 

108 

(60 CHARACTER 

72 

WMNMTXT2 

SECOND MESSAGE TEXT (MAXIMUM 72 BYTES) 

180 

(B4) BITSTRING 

1 

WMNMST2 

STATUS FLAGS 2 


1 . 


WMNMTPD2 

TPUT DONE MSG 2 


.1. 


WMNMTRC2 

SECOND MINOR WQE HAS BEEN MASTER TRACED 


..1 . 


WQERSVB9 

RESERVED 


...1 _ 


WQERSVC1 

RESERVED 


.... 1 . . . 


WQERSVC2 

RESERVED 


. 1 . . 


WQERSVC3 

RESERVED 


WQE 

LC28-1389-0 Cc) Copyright IBM Corp. 1980 


1985 


WQE 

Data Area Descriptions 419 

















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


• « t 1 « 

NQERSVC4 

RESERVED 

• « • ( 1 

WQERSVC5 

RESERVED 

181 (B5) CHARACTER 

3 WQERSVC6 

RESERVED 


184 

(B8) ADDRESS 

8 

HQERSVC7 

RESERVED 

192 

(CO) ADDRESS 

16 

WMNM1R99 

RESERVED 

208 

(DO) ADDRESS 

16 

HMNM2R99 

RESERVED 


WQE 

420 


MVS/370 Debug Hdbk Vol 5 


WQE 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 






Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 

CROSS REFERENCE 


HEX HEX HEX HEX HEX HEX 


NAME 

OFFSET 

BUS 


Id a a-i 4 W7TCTI9H 

NAME 


HMJFLG1 

B5 


WMJMDECC 

B8 

20 

WMJMMLWC. 

4 

20 

WMJFLGU 

B5 

80 

WMJMDECD 

B8 

10 

WMJMMLWD 

4 

10 

HMJFLG12 

B5 

40 

WMJMDECE 

B8 

08 

WMJMMLWE 

4 

08 

WMJFLG13 

B5 

20 

WMJMDECF 

B8 

04 

WMJMMLWF 

4 

04 

WMJFLG14 

B5 

10 

WMJMDECG 

B8 

02 

WMJMMLWG 

4 

02 

WMJFLG15 

B5 

08 

WMJMDECH 

B8 

01 

WMJMMLWH 

4 

01 

WMJFLG16 

B5 

04 

WMJMDECI 

B9 

80 

WMJMMSGN 

90 


WMJFLG17 

B5 

02 

WMJMDECJ 

B9 

40 

WMJMMT 

AE 


WMJFLG18 

B5 

01 

WMJMDECK 

B9 

20 

WMJMMT1 

AE 


WMJM 

0 


WMJMDECI 

B8 


WMJMMT1A 

AE 

80 

WMJMAECB 

8C 


WMJMDEC2 

B9 


WMJMMTIB 

AE 

40 

WMJMAREA 

5 


WMJMDEC3 

BA 


WMJMMT1D 

AE 

10 

WMJMASID 

A1 


WMJMDEC4 

BB 


WMJMMT1F 

AE 

04 

HMJMBUF 

A3 


WMJMDSP 

A0 


WMJMMT2 

AF 


WMJMBUFA 

A3 

80 

WMJMDSPA 

A0 

80 

WMJMNXT 

1 


WMJMBUFB 

A3 

40 

WMJMDSPB 

A0 

40 

WMJMPAD 

C 


WMJMBUFC 

A3 

20 

WMJMDSPC 

A0 

20 

WMJMPAD1 

15 


WMJMBUFD 

A3 

10 

WMJMDSPD 

A0 

10 

WMJMPAD2 

IE 


WMJMBUFE 

A3 

08 

WMJMDSPE 

AO 

08 

WMJMPSB1 

94 

10 

HMJMBUFF 

A3 

04 

WMJMDSPF 

AO 

04 

WMJMRCTA 

BO 

80 

HMJMBUFG 

A3 

02 

WMJMDSPG 

AO 

02 

WMJMRCTB 

BO 

40 

WMJMCONS 

94 

20 

WMJMDSPH 

AO 

01 

WMJMRCTC 

BO 

20 

WMJMCS 

AC 


WMJMECBF 

94 


WMJMRCTD 

BO 

10 

WMJMCS1 

AC 


WMJMEXT 

0 


WMJMRCTE 

BO 

08 

WMJMCS1A 

AC 

80 

WMJMEXTA 

1 


WMJMRCTF 

BO 

04 

WMJMCS1B 

AC 

40 

WMJMHCID 

67 


WMJMRCTG 

BO 

02 

WMJMCS1C 

AC 

20 

WMJMJBNM 

16 


WMJMRCTH 

BO 

01 

HMJMCS1D 

AC 

10 

WMJMJTCB 

BC 


WMJMRCTI 

B1 

80 

WMJMCSIE 

AC 

08 

WMJMLTYA 

86 

80 

WMJMRCTJ 

B1 

40 

WMJMCS1F 

AC 

04 

WMJMLTYB 

86 

40 

WMJMRCTK 

B1 

20 

WMJMCS1G 

AC 

02 

WMJMLTYC 

86 

20 

WMJMRCTI 

B1 

10 

WMJMCS1H 

AC 

01 

WMJMLTYD 

86 

10 

WMJMRCTM 

B1 

08 

WMJMCS2 

AD 


WMJMLTYP 

86 


WMJMRCTN 

B1 

04 

WMJMCS2A 

AD 

80 

WMJMLTY1 

86 


WMJMRCTO 

B1 

02 

WMJMCS2B 

AD 

40 

WMJMLTY2 

87 


WMJMRCTI 

BO 


WMJMCS2C 

AD 

20 

WMJMMAJD 

94 

40 

WMJMRCT2 

B1 


WMJMCS2F 

AD 

04 

WMJMMIN 

88 


WMJMRCT3 

B2 


WMJMDEC 

B8 


WMJMMLN 

4 


WMJMRCT4 

B3 


WMJMDECA 

B8 

80 

WMJMMLWA 

4 

80 

WMJMRESA 

6C 


WMJMDECB 

B8 

40 

WMJMMLWB 

4 

40 

WMJMRR 

8 



WQE 

LC28-1389-0 Cc) Copyright IBM Corp. 1980, 1985 


WQE 

Data Area Descriptions 421 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


NAME 

HEX 

OFFSET 

HEX 

VALUE 

NAME 

HEX 

OFFSET 

HEX 

VALUE 

NAME 

HEX 

OFFSET 

HEX 

VALUE 

WMJMRTC 

BO 


WMNMML1 

4 


WQEBUFG 

A3 

02 

WMJMRTCT 

A8 


WMNMML1B 

4 

40 

WQEDCA 

B8 

80 

WMJMRV98 

Cl 


WMNMML1C 

4 

20 

WQEDCB 

B8 

40 

WMJMRV99 

CC 


MMNMML1D 

4 

10 

WQEDCC 

B8 

20 

NMJMSEQ 

A9 


WMNMML1E 

4 

08 

WQEDCD 

B8 

10 

WMJMSER 

7A 


WMNMML1F 

4 

04 

WQEDCE 

B8 

08 

WMJMSERA 

7A 

80 

MMNMML1G 

4 

02 

WQEDCF 

B8 

04 

WMJMSERB 

7A 

40 

WMNMML1H 

4 

01 

WQEDCG 

B8 

02 

MMJMSERC 

7A 

20 

WMNMML2 

64 


NQEDCH 

B8 

01 

WMJMSERD 

7A 

10 

WMNMML2B 

64 

40 

NQEDCI 

B9 

80 

MMJMSERE 

7A 

08 

WMNMML2C 

64 

20 

WQEDCJ 

B9 

40 

WMJMSER1 

7A 


HMNMML2D 

64 

10 

MQEDCK 

B9 

20 

WMJMSER2 

7B 


WMNMML2E 

64 

08 

WQEDC1 

B8 


WMJMSID 

C4 


WMNMML2G 

64 

02 

WQEDC2 

B9 


NMJMTCB 

A4 


WMNMML2H 

64 

01 

NQEDESCD 

B8 


WMJMTRCD 

A3 

01 

WMNMNX1 

1 


WQEDOM 

A0 

04 

WMJMTS 

D 


WMNMNX2 

61 


WQEFLG1 

B5 


WMJMTSHH 

D 


WMNMST1 

54 


WQEFLG11 

B5 

80 

WMJMTSMM 

10 


WMNMST2 

B4 


WQEFLG12 

B5 

40 

WMJMTSP1 

F 


WMNMTL1 

7 


WQEFLG13 

B5 

20 

WMJMTSP2 

12 


WMNMTL2 

67 


WQEFLG14 

B5 

10 

WMJMTSSS 

13 


WMNMTPD1 

54 

80 

WQEFLG15 

B5 

08 

WMJMTXT 

IF 


WMNMTPD2 

B4 

80 

WQEFLG16 

B5 

04 

WMJMTXTL 

6 


WMNMTRC1 

54 

40 

WQEFLG17 

B5 

02 

WMJMUC 

0 


WMNMTRC2 

B4 

40 

WQEFLG18 

B5 

01 

WMJMUID 

B4 


WMNMTXT1 

C 


WQEJOBNM 

16 


WMJMVRSN 

CO 


WMNMTXT2 

6C 


WQEJSTCB 

BC 


WMJMWAIT 

94 

80 

WMNMUC1 

0 


WQELKP 

0 


WMNM 

0 


WMNMUC2 

60 


WQELKPA 

1 


WMNMEXT 

0 


WMNM1R99 

CO 


NQEMCSA 

AC 

80 

WMNMHCT1 

8 


WMNM2R99 

DO 


WQEMCSB 

AC 

40 

WMNMHCT2 

68 


WNJNPAD3 

6B 


WQEMCSC 

AC 

20 

MMNMLT1 

5 


WQE 

0 


WQEMCSD 

AC 

10 

WMNMLT1A 

5 

80 

WQEASID 

A1 


WQEMCSE 

AC 

08 

WMNMLT1B 

5 

40 

WQEAUTH 

A0 

01 

WQEMCSF 

AC 


WMNMLT1C 

5 

20 

WQEAVAIL 

A3 


WQEMCSFF 

AC 

04 

WMNMLT1D 

5 

10 

WQEBUFA 

A3 

80 

WQEMCSF1 

AC 


WMNMLT2 

65 


WQEBUFB 

A3 

40 

WQEMCSF2 

AD 


WMNMLT2A 

65 

80 

WQEBUFC 

A3 

20 

WQEMCSG 

AC 

02 

WMNMLT2B 

65 

40 

WQEBUFD 

A3 

10 

WQEMCSH 

AC 

01 

WMNMLT2C 

65 

20 

WQEBUFE 

A3 

08 

WQEMCSI 

AD 

80 

MMNMLT2D 

65 

10 

WQEBUFF 

A3 

04 

WQEMCSJ 

AD 

40 


WQE WQE 

422 MVS/370 Debug Hdbk Vol 5 LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


HEX HEX HEX HEX HEX HEX 


NAME 

OFFSET 

VALUE 

NAME 

OFFSET 

VALUE 

NAME 

OFFSET 

VALUE 

WQEMCSK 

AD 

20 

WQERR 

8 


MQERSV31 

7A 

04 

WQEMCSN 

AD 

04 

WQERSVA4 

98 


WQERSV32 

7A 

02 

WQEMCSO 

AD 

02 

WQERSVA5 

9C 


WQERSV33 

7A 

01 

WQEMCSP 

AD 

01 

WQERSVA6 

AE 

20 

WQERSV34 

84 


WQEMSGTA 

AE 

80 

NQERSVA9 

54 

20 

WQERSV35 

86 

08 

HQEMSGTB 

AE 

40 

NQERSVB1 

54 

10 

WQERSV36 

86 

04 

HQEMSGTC 

AE 

20 

WQERSVB2 

54 

08 

WQERSV37 

86 

02 

WQEMSGTD 

AE 

10 

WQERSVB3 

54 

04 

WQERSV38 

86 

01 

WQEMSGTF 

AE 

04 

WQERSVB4 

54 

02 

WQERSV47 

AD 

10 

WQEMSGTP 

AE 


WQERSVB5 

54 

01 

WQERSV48 

AD 

08 

WQEMSGT1 

AE 


WQERSVB6 

55 


WQERSV49 

AD 

02 

WQEMTRCD 

A3 

01 

WQERSVB7 

58 


WQERSV50 

AE 

08 

HQENBR 

A 


WQERSVB9 

B4 

20 

WQERSV51 

AE 

02 

WQEORE 

AO 

20 

WQERSVC1 

B4 

10 

WQERSV52 

AE 

01 

WQEPAD 

C 


WQERSVC2 

B4 

08 

NQERSV53 

B1 

01 

WQEPAD1 

15 


WQERSVC3 

B4 

04 

HQERSV54 

B6 


HQEPAD2 

IE 


WQERSVC4 

B4 

02 

WQERSV57 

B9 

10 

WQEPAD3 

9F 


NQERSVC5 

B4 

01 

WQERSV58 

B9 

08 

HQEPER1 

F 


WQERSVC6 

B5 


WQERSV59 

B9 

04 

HQEPER2 

12 


WQERSVC7 

B8 


WQERSV60 

B9 

02 

WQEPURGE 

AO 

80 

WQERSVD2 

7C 


WQERSV61 

B9 

01 

WQEQDFHC 

AO 

10 

WQERSVD4 

94 

08 

WQERSV62 

4 

80 

WQEQFHC 

AO 

40 

NQERSVD5 

94 

04 

WQERSV63 

5 

08 

HQEROUT 

BO 


WQERSVD6 

94 

02 

NQERSV64 

5 

04 

WQEROUTA 

BO 

80 

WQERSVD7 

94 

01 

WQERSV65 

5 

02 

WQEROUTB 

BO 

40 

WQERSVD8 

95 


WQERSV66 

5 

01 

WQEROUTC 

BO 

20 

WQERSV09 

AD 

10 

WQERSV67 

6 


HQEROUTD 

BO 

10 

WQERSV10 

AD 

08 

WQERSV68 

64 

80 

WQEROUTE 

BO 

08 

NQERSV11 

AD 

01 

HQERSV69 

64 

04 

WQEROUTF 

BO 

04 

WQERSV13 

AE 

08 

WQERSV70 

65 

08 

WQEROUTG 

BO 

02 

WQERSV14 

AE 

02 

WQERSV71 

65 

04 

HQEROUTH 

BO 

01 

WQERSV15 

AE 

01 

WQERSV72 

65 

02 

HQEROUTI 

B1 

80 

WQERSV16 

B1 

01 

WQERSV73 

65 

01 

WQEROUTJ 

B1 

40 

WQERSV17 

B2 


WQERSV74 

66 


WQEROUTK 

B1 

20 

WQERSV21 

B9 

10 

WQERSV98 

Cl 


WQEROUTL 

B1 

10 

WQERSV22 

B9 

08 

WQERSV99 

CC 


WQEROUTM 

B1 

08 

NQERSV23 

B9 

04 

NQERTCT 

A8 


HQEROUTN 

B1 

04 

WQERSV24 

B9 

02 

WQESEQN 

A9 


WQEROUTO 

B1 

02 

WQERSV25 

B9 

01 

WQESUSP 

AO 

02 

WQEROUT1 

BO 


HQERSV26 

BA 


WQESYSID 

C4 


WQER0UT2 

B1 


WQERSV29 

74 


WQETCB 

A4 


WQERPYID 

B6 


WQERSV30 

78 


WQETS 

D 


WQE 








WQE 

LC28-1389-0 

(c) Copyright 

IBM Corp. 1980, 

1985 


Data Area Descriptions 

423 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


HEX HEX HEX HEX HEX 

NAME OFFSET VALUE NAME OFFSET VALUE NAME _ OFFSET 


WQETSHH 

D 

WQETXTL 

9E 

WQEVRSN 

CO 

WQETSMM 

10 

WQEUCMID 

B4 

WQEWTOR 

AO 

WQETSSS 

13 

HQEUSE 

0 

WQEXA 

AO 

WQETXT 

IF 






HEX 

VALUE 

08 


WQE 

424 MVS/370 Debug Hdbk Vol 5 


WOE 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 



Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


WSAVTC 


Common Name : CPU Nork Save Area Vector Table 

Macro ZD : IHAWSAVT 

DSECT Name : WSAC 

Created by : SYSGEN 

Subpool and Key : 245 and key 0 

Size : 88 bytes 

Pointed to by : LCCACPUS field of the LCCA data area 
Serialization : None 

Function : Contains pointers to the processor work save areas. 
OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) STRUCTURE 

0 

WSAC 

, CPU WORK/SAVE AREA VECTOR TABLE LCCAC¬ 
PUS POINTS TO THIS AREA 

0 

(0) ADDRESS 

4 

WSACCWSA 

ADDRESS OF LOW-LEVEL COMMON SAVE AREA 
(104 BYTES) 

4 

(4) ADDRESS 

4 

WSACGTF 

ADDRESS OF GTF SAVE AREA (208 BYTES) 

8 

(8) ADDRESS 

4 

WSAC0PTM 

ADDRESS OF SYSTEM RESOURCES MANAGER 
(SRM) SAVE AREA (192 BYTES) 

12 

(C) ADDRESS 

4 

NSACTIME 

ADDRESS OF TIMER SAVE AREA (96 BYTES) 

16 

(10) ADDRESS 

4 

WSACACR 

ADDRESS OF AUTOMATIC CPU RECONFIGURATION 
(ACR) SAVE AREA (4760 BYTES) (SAVE AREA 
F0R> HARDWARE AND SOFTWARE INFORMATION, 
NORMAL STACK, MCH FRR STACK, IEAVTRTH 
SAVE AREA WSACRTMK) OR ADDRESS OF 8-BYTE 
RESERVED AREA IF ACR IS NOT IN THE SYS¬ 
TEM 

20 

(14) ADDRESS 

4 

WSACRTMK 

ADDRESS OF RECOVERY TERMINATION MONITOR 
MACHINE CHECK HANDLER (RTM/MACHK) SAVE 
AREA (104 BYTES) 


WSAVTC 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


WSAVTC 

Data Area Descriptions 425 








Contains Restricted Materials of IBM 
Licensed Materials Property of IBM 


O FFSETS _HE!_ LENGTH NAME _ DESCRIPTION 


24 

(18) ADDRESS 

4 

WSACIOS 

ADDRESS OF IOS (FLIH) SAVE AREA (80 
BYTES) 

28 

(1C) ADDRESS 

4 

HSACEDSO 

ADDRESS OF SCHEDULE SAVE AREA (80 BYTES) 

32 

(20) ADDRESS 

4 

HSACMF1 

ADDRESS OF MEASUREMENT FACILITY 1 SAVE 
AREA (144 BYTES) 

36 

(24) ADDRESS 

4 

WSACABTM 

ADDRESS OF ABTERM SAVE AREA (72 BYTES) 

40 

(28) ADDRESS 

4 

WSACRSTI 

ADDRESS OF I/O RESTART SAVE AREA (128 
BYTES) 

44 

(20 ADDRESS 

4 

WSACREST 

ADDRESS OF HORK/SAVE AREA FOR STATUS 
SAVING BY STOP AND RESTART SUBROUTINE 
(80 BYTES) 

48 

(30) ADDRESS 

4 

HSACRRSA 

ADDRESS OF SUPERVISOR REPAIR ROUTINE 

SAVE AREA (64 BYTES) 

52 

(34) ADDRESS 

4 

WSACCCH 

ADDRESS OF RECOVERY MANAGEMENT SERVICES 
CHANNEL CHECK HANDLER (RMS-CCH) SAVE 

AREA (72 BYTES) 

56 

(38) ADDRESS 

4 

WSACASMD 

ADDRESS OF AUXILIARY STORAGE MANAGEMENT 
(ASM) DISABLED INTERRUPT EXIT (DIE) 
HORK/SAVE AREA (1024 BYTES) 

60 

(30 ADDRESS 

4 

WSACASMS 

ADDRESS OF AUXILIARY STORAGE MANAGEMENT 
(ASM) SRB DRIVEN I/O ROUTINES HORK/SAVE 
AREA (1024 BYTES) 

64 

(40) ADDRESS 

4 

WSACRSM 

ADDRESS OF REAL STORAGE MANAGER (RSM) 
HORK/SAVE AREA (80 BYTES) 

68 

(44) ADDRESS 

4 

HSACDCCR 

ADDRESS OF DISABLED CONSOLE COMMUNI¬ 
CATION HORK/SAVE AREA (304 BYTES) 

72 

(48) ADDRESS 

4 

WSACSLIP 

ADDRESS OF SLIP/PER HORK/SAVE (136 

BYTES) 

WSAVTC 

426 

MVS/370 Debug Hdbk Vol 

5 

WSAVTC 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 













Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


fiEESEIS_IYEI _ LENGTH NAME _ DESCRIPTION 

76 (40 ADDRESS 4 HSACEVRR ADDRESS OF ASVT AND AFT RECONSTRUCT 

HORK/SAVE AREA (32 BYTES). 


80 (50) ADDRESS 4 WSACRESF ADDRESS OF RESTART FLIH WORK/SAVE AREA 

(760 BYTES). 


84 (54) ADDRESS 4 WSACMFA ADDRESS OF MALFUNCTION ALERT HORK/SAVE 

AREA (144 BYTES). 


WSAVTC 

LC28-1389-0 (c) Copyright IBM Corp 


1980, 1985 


WSAVTC 

Data Area Descriptions 427 





Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


WSAVTG 


Common Name s Global Work Save Area Vector Table 
Macro ZD : IHAWSAVT 
DSECT Name : WSAG 
Created by : SYSGEN 

Subpool and Key : NUCLEUS resident and key 0 
Size 5 Global 52 bytes 

Pointed to by : CVTSPSA field of the CVT data area 
Serialization : None 

Function s Contains pointers to the global work save areas. 
OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) STRUCTURE 

0 

WSAG 

, GLOBAL WORK/SAVE AREA VECTOR TABLE 
CVTSPSA POINTS TO THIS AREA 

0 

(0) ADDRESS 

4 

NSAGPGIO 

ADDRESS OF PAGE 1/0 ERROR SAVE AREA (80 
BYTES) 

4 

(4) ADDRESS 

4 

WSAGGMFM 

ADDRESS OF GETMAIN/FREEMAIN SAVE AREA 
(1168 BYTES) 

8 

(8) ADDRESS 

4 

WSAGRV01 

RESERVED 

12 

(C) ADDRESS 

4 

WSAGSSRS 

ADDRESS OF SUSPEND/RESET FOR RSM SAVE 
AREA (80 BYTES) 

16 

(10) ADDRESS 

4 

WSAGEMS0 

ADDRESS OF MEMORY SWITCH SAVE AREA (56 
BYTES) 

20 

(14) ADDRESS 

4 

WSAGSTAT 

ADDRESS OF STATUS SAVE AREA (72 BYTES) 

24 

(18) ADDRESS 

4 

WSAGOPTM 

ADDRESS OF SYSTEM RESOURCES MANAGER 
(SRM) SAVE AREA (400 BYTES) 

28 

(1C) ADDRESS 

4 

WSAGMEMT 

ADDRESS OF MEMORY TERMINATION SAVE AREA 
(80 BYTES) 

WSAVTG 

428 

MVS/370 Debug Hdbk 

Vol 

5 

WSAVTG 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 










Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ PES . CRI .mO_M 


32 

(20) ADDRESS 

4 

WSAGRV02 

RESERVED. 


36 

(24) ADDRESS 

4 

WSAGREST 

ADDRESS OF MORK/SAVE AREA FOR STATUS 
SAVING BY STOP AND RESTART SUBROUTINE 
(168 BYTES) 

40 

(28) ADDRESS 

4 

WSAGSCHE 

ADDRESS OF SCHEDULE ROUTINE (IEAVESCO) 
SAVE AREA FOR SYSEVENT BRANCH ENTRY 
INTERFACE (72 BYTES) 

44 

(20 ADDRESS 

4 

WSAGEXSN 

ADDRESS OF WORK/SAVE AREA FOR 
SPIN NOTIFICATION (400 BYTES) 

EXCESSIVE 

48 

(30) ADDRESS 

4 

WSAGDCCR 

ADDRESS OF MORK/SAVE AREA FOR 
COMMUNICATION (1496 BYTES) 

DISABLED 

52 

(34) ADDRESS 

4 

NSAGRESF 

ADDRESS OF MORK/SAVE AREA FOR 

RESTART 


FLIH (456) BYTES) 


WSAVTG 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


WSAVTG 

Data Area Descriptions 429 






Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


WSAVTL 


Common Name : Local Hork Save Area Vector Table 

Macro ID : IHAWSAVT 

DSECT Name : WSAL 

Created by : SYSGEN 

Subpool and Key : 255 and key 0 

Size i 60 bytes 

Pointed to by : ASXBSPSA field of the ASXB data area 
Serialization : LOCAL lock 

Function : Contains pointers to the local work save areas. 
OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) STRUCTURE 

0 

WSAL 

, LOCAL WORK/SAVE AREA VECTOR TABLE 
ASXBSPSA F0INTS TO THIS AREA 

0 

(0) ADDRESS 

4 

WSALCWSA 

ADDRESS OF LOW-LEVEL COMMON SAVE AREA 
(104 BYTES) 

4 

(4) ADDRESS 

4 

WSALVALC 

ADDRESS OF VALIDITY CHECK SAVE AREA (64 
BYTES) 

8 

(8) ADDRESS 

4 

WSALRTM2 

ADDRESS OF RECOVERY TERMINATION MONITOR 
(RTM) SAVE AREA (80 BYTES) 

12 

(C) ADDRESS 

4 

WSALSDMP 

ADDRESS OF SDUMP SAVE AREA (80 BYTES) 

16 

(10) ADDRESS 

4 

WSALABTM 

ADDRESS OF ABTERM SAVE AREA (80 BYTES) 

20 

(14) ADDRESS 

4 

WSALCIRB 

ADDRESS OF CIRB SAVE AREA (80 BYTES) 

24 

(18) ADDRESS 

4 

WSALS2EE 

ADDRESS OF STAGE 2 EXIT EFFECTOR SAVE 
AREA (80 BYTES) 

28 

(1C) ADDRESS 

4 

WSALEXIT 

ADDRESS OF EXIT (SVC 3) SAVE AREA (128 
BYTES) 

32 

(20) ADDRESS 

4 

WSALPOST 

ADDRESS OF POST SAVE AREA (160 BYTES) 

WSAVTL 

430 

MVS/370 Debug Hdbk 

Vol 

5 

WSAVTL 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 










Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


36 

(24) ADDRESS 

4 

WSALWAIT 

ADDRESS OF WAIT SAVE AREA (72 BYTES) 

40 

(28) ADDRESS 

4 

WSALSTAT 

ADDRESS OF STATUS SAVE AREA (80 BYTES) 

44 

(20 ADDRESS 

4 

WSALSTAE 

ADDRESS OF STAE SAVE AREA (112 BYTES AS 
FOLLOWS 72 BYTES SAVE AREA SERIALIZED BY 
LOCAL LOCK FOR USERS OF ESTAE BRANCH 
ENTRY, 4 BYTES RESERVED, 20 BYTES USED 

BY INTERSECT SERVICE ROUTINE, 12 BYTES 
RESERVED, 4 BYTES FREE SCB QUEUE ANCHOR) 

48 

(30) ADDRESS 

4 

WSALEVNT 

ADDRESS OF EVENTS (FAST MULTIPLE WAIT) 
SAVE AREA (72 BYTES) 

52 

(34) ADDRESS 

4 

HSALRSM 

ADDRESS OF REAL STORAGE MANAGEMENT (RSM) 
SAVE AREA (72 BYTES) 

56 

(38) ADDRESS 

4 

HSALACHP 

ADDRESS OF ASCB CHAP ROUTINE SAVE AREA 


(40 BYTES) 


WSAVTL 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


WSAVTL 

Data Area Descriptions 431 







Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


XDBA 


Common Name : IOS EXCP Debugging Area 

Macro ZD : IECDXDBA 

DSECT Name : XDBA 

Created by : IECEXPR 

Subpool and Key : 

Size : 2048 bytes 

Pointed to by : CBEXCPD field of the TCB data area 
Serialization : None 

Function : The XDBA contains diagnostic data provided by EXCP's 
functional recovery procedure* XCPFRR* to aid in debugging EXCP 
problems. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) STRUCTURE 

n 

XDBA 



0 

(0) SIGNED 

2 

XDBACOMP 

ABEND COMPLETION CODE 


2 

(2) HEX 

1 

XDBAFLAG 

FLAG DEPICTING WHERE THE PROBLEM 
OCCURRED. 



1 t • « « • • • 

( 1 * * •••• 


XDBAFTE 

XDBABKE 

"X’80 ,n ERROR IN SVC PORTION OF EXCP 
"X'40'" ERROR IN SRB PORTION OF EXCP 



• •1* •••• 


XDBAPCI 

"X’20'" ERROR IN PCI APPENDAGE 



• ••1 •••• 


XDBACHE 

"X'10'" ERROR IN CHE APPENDAGE 



• • • • X • • • 


XDBAABE 

"X'08'" ERROR IN ABE APPENDAGE 



• ••« • X • • 


XDBAEOE 

"X'04'" ERROR IN EOE APPENDAGE 



• ••• . .1« 


XDBAPGFX 

"X'02*" ERROR IN PGFX APPENDAGE 



• • 1 


XDBAAACT 

"X'01'" APPENDAGE IS ACTIVE 


3 

•••• •••• 

(3) HEX 

1 

XDBASIO 

XDBARV1 

"X'OO'" ERROR IN SI0 APPENDAGE 

RESERVED 


4 

(4) HEX 

8 

XDBAPSW 

PSW AT TIME OF ERROR 


12 

(C) HEX 

2 


RESERVED 


14 

(E) HEX 

2 

XDBACC 

0RIG. ABEND CODE 


16 

(10) SIGNED 

4 

XDBARGSVQ6) 

REGISTERS AT TIME OF ABEND 



/ 


XDBA 

432 


MVS/370 Debug Hdbk Vol 5 


XDBA 

LC28-1389-0 (c) Copyright IBM Corp. 1980* 1985 















Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


80 

(50) 

SIGNED 

4 

XDBATRAN 

TRANSLATION EXCEPTION ADDR 

84 

(54) 

HEX 

40 

XDBARQE 

RQE BLOCK 

124 

1- 

(70 

SIGNED 

4 

XDBACHAN 

XDBA CHAIN POINTER 


THE 160 BYTE BLOCKS ARE MOVED INTO REMAINING DEBUGGING 
AREA, IN FOLLOWING SEQUENCE (IF PRESENT) t 

ENA, SRB/IOSB, TCCN, IDAL, FIX, BEB, AND CPS. 

THE 1ST 160 BYTE FOLLOWING LAST ENTRY IS ZEROED. 

THE SRB AND TCCW ARE VALID IF ADDR IN RQE IS VALID 


128 (80) HEX 

1 . 1 . .... 


11 .. 


160 XDBAENT 
XDBAEL 
XDBASIZE 
XDBABLKS 


START OF 16OB BLOCKS 
"160" ONE BLOCK ENTRY LENGTH 
"2048" SIZE OF XDBA 

"(XDBASIZE-(XDBAENT-XDBA))/XDBAEL" CNT 
160B BLKS 


XDBA 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


XDBA 

433 


Data Area Descriptions 





Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


XPTE 


Common Name : RSM External Page Table 
Macro ID : IHAXPTE 
DSECT Name : XPTE 

Created by : IEAV6M00 and IEAVCSEG (RSM supervisor) 

Subpool and Key : 245 or 255 and key 0 

Size : 12 bytes 

Pointed to by : PCBXPTA field of the PCB data area 
Serialization : SALIOC lock 

Function : Each is associated with a PGTE entry and describes 
external storage location and status of page. 

OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


0 

(0) STRUCTURE 


XPTE 

, XPTEPTR 

0 

(0) CHARACTER 

1 

XPTPROT 

PROTECTION KEY 

1 

(1) CHARACTER 

1 

XPTRSV1 

RESERVED 

2 

(2) BITSTRING 

1 

XPTFLAGS 

FLAG FIELD 


l*i« •••• 


XPTVIOLP 

"BITO"- XPTLPID CONTAINS A VIO LPID. THE 
AUX- ILIARY STORAGE REPRESENTED BY 
XPTLPID SHOULD NOT BE DESTROYED- A LSID 
MUST BE OBTAINED FOR A PAGE-OUT. 1=SAVE 
EXIST ING AUXILIARY STORAGE. 0=EXISTING 
AUX ILIARY STORAGE MAY BE DISCARDED. 


• lit •••• 


XPTXAV 

"BIT1"- EXTERNAL STORAGE ADDRESS VALID 
FLAG WHEN 1, EXT. ADDR. IS VALID 


• • 1 • tit* 


XPTCKF 

"BIT2"- CHANGE KEY FLAG; IF 1, KEY FOR 
THIS PAGE HAS BEEN CHANGED BY IEAVCKEY 


««• 1 •••• 


XPTTAKE 

"BIT3"- RESERVED. WAS USED IN VS2/REL1 


«••• 1 • •• 


XPTVIO 

"BIT4"- WHEN 1, PAGE IS PART OF A VIO 
WINDOW 


•••• liii 


XPTRES2 

"BIT4"- RESERVED. 


til* ill* 


XPTDEFER 

"BIT6"- ALLOCATION DEFERRED FLAG; WHEN 

1, ALLOCATION DEFERRED FOR THIS PAGE 


• •*• • • • X 


XPTRSV4 

"BIT7"- RESERVED 

3 

(3) CHARACTER 

1 

XPTFLAG2 

SECOND FLAG BYTE. 


1. 


XPTVALID 

"BITO"- 1=LSID IN XPTLSID IS VALID. 

XPTE 




XPTE 

434 

MVS/370 Debug Hdbk Vol 

5 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 





Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSETS TYPE LENGTH NAME _ DESCRIPTION 


. 1 . . 


.. 1 . 



. .1 


1 . 


XPTRES1 "BIT1"- RESERVED 

XPTPOINP "BIT2"- PAGE-OUT IN PROGRESS FLAG. 

1=PAGE-0UT IN PROGRESS. (IMPLIES THAT 
XPTVALID='0»B 

XPTIOERR "BIT3"- I/O ERROR FLAG. 1=A PERMANENT 

READ I/O ERROR WAS SUFFERED BY THIS 
PAGE. 

XPTBBELO "BIT4"- BELOW BIT FLAG. 1=IF POSSIBLE, A 

FRAME BELOW 16 MEG SHOULD BE ASSIGNED ON 
PAGE FAULT/PAGE LOAD/STAGE-2 SWAPIN, 
BECAUSE THIS PAGE, ALTHOUGH NOT FIXED AT 
THE TIME OF THE FAULT/LOAD/SWAPIN, WAS 
FIXED AT SOME PRIOR TIME, AND IT IS 
ANTICIPATED THE PAGE MAY IN FUTURE BE 
FIXED AGAIN. IF THE PAGE IS FAULT¬ 
ED/LOADED/SWAPPED IN INTO A BELOW FRAME, 
AND A FIX REQUEST IS LATER MADE, A MOVE 
FROM ABOVE TO BELOW CAN BE AVOIDED. 


4 

(4) CHARACTER 

8 

XPTLPID 

THE LPID OF THE EXTERNAL STORAGE 

LOCATION OF THE VIRTUAL PAGE 

4 

(4) SIGNED 

4 

XPTLGN 

LOGICAL GROUP NUMBER PORTION OF LPID IF 
VIO PAGE. 

4 

(4) CHARACTER 

4 

XPTLSID 

AUX. STORAGE ADDRESS OF SLOT IF NOT VIO 
PAGE. 

8 

(8) SIGNED 

4 

XPTLPN 

LOGICAL PAGE NUMBER PORTION OF LPID IF 
VIO PAGE. 

8 

(8) CHARACTER 

4 

XPTLSID2 

AUX. STORAGE ADDRESS OF SLOT IF NOT VIO 
PAGE AND DUPLEXED PAGE. 

12 

(C) CHARACTER 
_11.. 

1 

XPTEND 

XPTLEN 

"XPTEND-XPTE"- LENGTH OF EXTERNAL PAGE 


TABLE ENTRY 


XPTE 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 


XPTE 

Data Area Descriptions 435 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


XSI 


Common Name : Extended Status Block 
Macro ID : IHAXSB 
DSECT Name : XSB 

Created by : IEAVBK, IEAVEMIN, IEAVESVC, IEAVEATO, IEAVEEEO, IEAVESPM, 
IEAVLK00 

Subpool and Key : 255 and key 0 

Size : 32 bytes 

Pointed to by : IHSAXSB, TCBXSB, SSRBXSB, RBXSB 
serialization : N/A for SSRB. Local lock for IHSA. TCBACTIV for 
all others. 

Function : Contains dispatcher information concerning cross memory 
environment. 

fiEESBIS_IXEE _ LENGTH NAME _ DESCRIPTION 


0 

(0) STRUCTURE 

H 

XSB 


0 

(0) FLOATING 

8 

XSBBEGIN 

BEGINNING OF XSB. 

0 

(0) CHARACTER 

4 

XSBXSB 

XSB ACRONYM. 

4 

(4) SIGNED 

4 

XSBLINK 

LINK TO NEXT AVAILABLE XSB IN POOL. SET 
BY EXIT, IEAVE0R, NHEN PUTTING XSB IN 
POOL. CLEARED BY STAGE 3, IEAVEEEO, 

HHEN ASSIGNING XSB TO AN IRB. 

4 

(4) SIGNED 

4 

XSBFLGS 

XSB FLAGS. 

8 

(8) FLOATING 

8 

XSBXMCRS 

CROSS MEMORY STATUS CONTROL REGS. 

8 

(8) SIGNED 

4 

XSBXMCR3 

CONTROL REG 3. 

8 

(8) SIGNED 

2 

XSBKM 

KEY MASK. 

10 

(A) SIGNED 

2 

XSBSASID 

SECONDARY ASID. 

12 

(C) SIGNED 

4 

XSBXMCR4 

CONTROL REG 4. 


XSB 

436 


MVS/370 Debug Hdbk Vol 5 


XSB 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985 














Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


OFFSE TS_ TYPE LENGTH NAME _ DESCRIPTION 


12 

(C) 

SIGNED 

2 

XSBAX 

AUTHORIZATION INDEX. 

14 

(E) 

SIGNED 

2 

XSBPASID 

PRIMARY ASID. 

16 

(10) 

FLOATING 

8 

XSBCMLE 

CML LOCK STATUS ELEMENT. 

16 

(10) 

ADDRESS 

4 

XSBXLIDR 

DATA FOR IDENTIFICATION OF CML REQUE¬ 
STOR. ADDRESS OF SRB SCHEDULED FOR TASK 
MODE CML LOCK REQUESTOR (IN XSB OF RB). 
ASID ASSOCIATED WITH SRB MODE CML LOCK 
REQUESTOR (IN XSB OF SSRB). 

20 

(14) 

ADDRESS 

4 

XSBXLAS 

ASCB ADDRESS OF CML LOCK 

REQUESTED/OHNED. 

24 

(18) 

FLOATING 

8 

XSBSTKE 

CURRENT PCLINK STACK INFORMATION. 

24 

(18) 

SIGNED 

2 

XSBTKN 

CURRENT STACK TOKEN. 

26 

(1A) 

SIGNED 

2 

XSBASD 

CURRENT STACK ADDRESS SPACE DESIGNATOR. 

28 

(1C) 

ADDRESS 

4 

XSBSEL 

CURRENT STACK ELEMENT ADDRESS. 

32 

(20) 

FLOATING 

8 

XSBEND 

END OF XSB. 


. .1 

1 • • • • 


XSBLEN 

n XSBEND-XSBBEGIN”LENGTH OF XSB. 


XSB 

LC28-1389-0 (c) Copyright IBM Corp 


1980/ 1985 


XSB 

Data Area Descriptions 437 








Contains Restricted Materials of IBM 
Licensed Materials - Property of IBM 


msi 


Common Name : Extent List 
Macro ZD : IHAXTLST 
DSECT Name : XTLST 

Created by : Modules - IEAVLK01, IEAVID00, IENMSEPT 
Subpool and Key s 255 and key 0 
Size : 16 bytes 

Pointed to by : CDXLMJP field of the CDE data area 
Serialization t By serialization of the CDE that points to the XTLST 
Function s Contains information concerning the extents of a particular 
load module which has been loaded into virtual storage. 

■PJE ESET S_HES_ LENGTH NAME _ DESCRIPTION 


0 

(0) 

STRUCTURE 

n 

XTLST 


0 

(0) 

SIGNED 

4 

XTLLNTH 

NUMBER OF BYTES IN EXTENT LIST (=16) 

4 

(4) 

SIGNED 

4 

XTLNRFAC 

NUMBER OF RELOCATION FACTORS (=1) 

8 

(8) 

ADDRESS 

4 

XTLMSBLA 

WORD REFERENCE FOR XTLMSBLN 

8 

(8) 

CHARACTER 

1 


ONE BYTE OF X'80* 

9 

(9) 

ADDRESS 

3 

XTLMSBLN 

LENGTH OF MAIN STORAGE BLOCK 

12 

(C) 

ADDRESS 

4 

XTLMSBAA 

WORD REFERENCE FOR XTLMSBAD 

12 

(C) 

CHARACTER 

1 


ONE BYTE OF X'OO* 

13 

(D) 

ADDRESS 

3 

XTLMSBAD 

ADDRESS OF MAIN STORAGE BLOCK 


XTLST 

438 


MVS/370 Debug Hdbk Vol 5 


XTLST 

LC28-1389-0 (c) Copyright IBM Corp. 1980, 1985