!ORCO! !ONCO! provides the control link for CP's monitoring activity, the user, and the tape
drive.
o
8 10 18 20 28 30 70 BO B8 CO C8 DO D8 EO E8 FO F8 100 i !ONARDB i 0*1 i 0*2 nONDVNUn i
-----------------------------------------------------1 MONDVLST 1/////////!OBRSV1///////////1 ---------------------------------------------------1 MOIIIOB !ONITRB 1 -----------------------------------------------------1 MONCLOCK 1 -----------------------------------------------------1 MONSUSCK 1 -----------------------------------------------------1 MONSUSCT 1/////////!OBRSVD1//////////1 MONSAVE1 !ONSAVE2 MONUSER ftORSPLCT !OBS-FB !OBCURV MOBBXTV !OBCURR l'IONIUTR MOBDASA MONDASB MONDAS M*3 M*4 MOBBUFBO MOBCURBF MOBCRSLT MOBIOBF MORIOSLT MOBSKLST MOBSACT MOBCBPTR MOBUTRB l'IORBUF1 MORBUF1V (Variable nu.her of buffers)
(Last address field)
56 IBM VM/370 Data Areas and Control Block Logic

Hexadecimal Field
Displacement Name o 4 5 KONARDB DS MONFLAG1 DS Bi!§ 1:11 KONSYSVK EQU CFSTOP EQU TRUN EQU ERROR EQU l!ONTIINT EQU KONLSTBK EQU l!ONIBUF EQU l!ONFLAG2 DS 1F 11 KONFLAG1 i'isQI- 1'20' X'10' X'08' X'04' X'02' X'01' 1X MONFLAG2 SUSPEND EQU -i'aoe-- 6
8
C 10 14
18 20 28
2C 30 70 EO E8
BC CO C4
C8
CC DO D4
D8
DC
DD
DE EO E4
E8
EC FO F4
F8
FC 100 KONDVNQl! DS MONDVLST DS KONRSV1 DS MONAIOE DS DS l!ONCLOCK :PS KONSUSCK DS KONSUSCT DS MONRSiD1 DS MONSAlE1 DS MONSAVE2 DS MONUSER DS MON;5PLCT DS MONSFB DS MONCURV DS MONNXTv DS MONCURR DS MONNXTR DS MONDASA DS MONDASB DS KONDAS DS MONEX DS l!ONFLAG3 DS §it§ 1:11 CLSUS EQU EXHAUST EQU CL EQU SPOOLED EQU MONBUFNO DS MONCURBF DS MONCRSLT DS KONIOBF DS KONIOSLT DS MONSKLST DS MONSACT DS MONCHPTR DS l!ONUTRB DS KONBUF1 DS 1H
1F
1F
1F
1F
1D
1D
1F
1F
16F
16F
8C 1F 1F
1F iF 1F
1F
1F
1F
1F MONFLAG3 i'sO'- X'40' 1'20' 1'10' 1H
1F
1F
1F
1F
1F
1F
1F
1F
1F MCNCOM Field Description, Contents, Meaning Address of monitor tape real device block M*1 Monitor flag
Flag used by user class routine MONliOR STOP command has been issued Tape rewind-unload CCW has been scheduled
Tape error has occurred --step VK/370 menitor
Handling timer interruption
Handling the last tlock Only one buffer for VM/370 menitoring K*2 Work byte VK/370 monitor bas been suspended Numter of entries in real device list
Address of the real device list
Reserved for IBM use
Address of monitor tape l/C block
Address of monitor timer request block TOD clock stamp for each record TOD clock value at last suspension
Suspension count
Reserved for IBM use Monitor internal save area fer main processor 8onitor internal save area for attached
precessor User starting/stopping the V8/310 monitor Number of records on spool file
Address of SFBLCK for spool file Virtual address of first virtual buffer Virtual address of secend virtual buffer Real address of first virtual buffer Real address of second virtual buffer
Address of next DASD buffer
Address of previous DASD buffer
Address of IASD buffer for tbe spocl file ii*3 Flag lyte Spool file closed ty command 8*4 Flag tyte Suspend during close Spool DASI slots exhausted
Suspension necessary 8onitor to spool active
Reserved for IBM use
Address of current V8/370 menitor buffer
Corresponding slot address
Address of 1M/370 monitor buffer going to tape Corresponding slot address
Address for device list seeks
Limit count for real time .enitor
Address of channel sampling data
Address of I/O utilization
First VM/37C monitor buffer address Section 1. CP Data Areas and Centrel Blocks 57