Field
Name 12its EXTMODE EQU MCHEK EQU WAIT EQU PROBMODE EQU lU ts PERMODE EQU TRANMODE EQU IOMASK EQU EXTMASK EQU 12its ATTN SM CUE BUSY CE DE UC UE PCI IL PRGC PRTC CDC CCC lFCC CEC ]its CD
CC
SILl SKIP PCIF IDA EQU EQU EQU EQU EQU EQU EQU EQU EQU EQU EQU EQU EQU EQU RQll EQU EQU EQU EQU EQU EQU EQU CMDREJ EQU INTREQ EQU EUSOUT EQU EQCEK EQU tATACHK EQU Field Description, Contents, Meaning i.n PSW X'08' Bit 12-- extended lIode X'04' Bit 13 -machine check enabled
wait state X'02' Bit 14 - X'01' Bit 15 -problell state
in Extended f2! --X'40'---- Bit 01 - PER enabled X'04' X'02' X'01' in Channel --X'80'--- X'40' X'20' X'10' X'08' X'04' X'02' X'01' X'80' X'40' X'20' X' 10' X'08' X'04' X'02' X'01' in Channel --X'80'--- X'40' X'20' X'10' X'08' X'04' i1! X'80' X'40' X'20' X'10' X'08' Bit 05 - translate mode
Bit 06 - summary I/O mask
Bit 07 - summary external mask Bit 32 -attention
Bit 33 - status modifier
Bit 34 -control unit end
Bit 35 -busy
Bit 36 -channel end
Bit 37 -device end
Bit 38 -unit check
Bit 39 -unit exceFtion
Bit 40 - program-control interrupt
Bit 41 -incorrect length
Bit 42 - program cbeck
Bit 43 -protection check
Bit 44 -channel data check
Bit 45 -channel control check
Bit - interface control check
Bit 47 -chaining check
Command Word (CCW) ------Bit-32 --chain data
Bit 33 -command chain
Bit 34 -suppress incorrect length
Bit 35 - suppress data transfer
Bit 36 -program-control interrupt
Bit 37 -indirect data address !g !g2! Bit 0 - command reject
Bit 1 - intervention required
Bit 2 -bus out
Bit 3 -equipment check
Bit 4 -data check
indicator
FETCH
278 IBM VM/370 Data Areas and Control Block Logic

Field
Nalle ]1ts • BYTE 0 BLKMPI EQU SSl!SUPP EQU TODSYNC EQU • BYTE 1 PAGE4K EQU PAGE2K EQU SEG1M EQU • BYTE 2 MFAlUSK EQU EMSMASK EQU XC5ASK EQO SYNCMASK EQU CKCMASK EQU CPTMASK EQU • BYTE 3 INTMASK EQU KEYMASK EQU SIGMASK EQU ]1ts • BYTE 3 PERFCL EQU RESPCL EQU SCBEDCL EQU TIMECL EQU USERCL EQU PRIVCL EQU DASDCL EQU SEEKCL EQU • BYTE 4 SPROFCL EQU • BYTE 0 PERSUBR EQU PERIFET EQU PERSALT EQU PERGPRS EQU Bits defined ;-BYTE-O--- BARDSTOP EQU SYNCLOG EQU IOLOG EQU RECOVRPT EQU CONFGRPT EQU DAMAGRPT EQU WARNGRPT EQU • BYTE 1 ASYNELOG EQU ASYNFLOG EQU X'80' X'40' X'20' X'SO' X'40' X'10' X'SO' X'40' X;20; X'10' X'OS' X'04' X'SO' X'40' X'20' X!SO' X'40' X'20' X'10' X'OS' X'04' X'02' X'01' X'SO' X'SO' X'40' X'20' X'10' X'SO' X'40' X'20' X'OS' X'04' X'02' X'01' X'SO' X'40' Field Description, Contents, Meaning Bit 00 - enable block aultiplexing Bit 01 - enable SSM suppression TOD synchronous control
Bit OS - use 4K pages
Bit 09 - use 2K pages
Bit 11 -use 1M segllents
Bit 16 -malfunction alert Blask
Bit 1"7 emergency signal iii ask . ,
Bit 18 - external call mask
Bit 19 - TOD synchronous check mask
Bit 20 - mask on clock comparator interrupt
Bit 21 - mask on processor timer interruFt
Bit 24 -mask on interval timer interrupt
Bit 25 -mask on oFerator key interrupt
Bit 26 -mask on external signals 2 througb Sample hardware/software utilizations
Trace response class
Trace scheduler activity class
Execution timing class
Sample user resource usage class
Privileged operands class
SallPle DASDs: utilizations class Trace DASD seek activity
Trace system profile class
Bit 00 - monitor successful branches
Bit 01 - monitor instruction fetches
Bit 02 - monitor storage alteration
Bit 03 - monitor register alteration
Bit
Bit
Bit
Bit
Bit
Bit
Bit 00 - 01 - 02 - 04 - 05 - 06 - 07 -
check stop control
synchronous logout control I/O logout control
recovery report mask
configuration report mask external damage report mask
warning condition report mask 7
Bit OS - asynchronous extended logout control
Bit 09 - asynchronous fixed logout contrcl
Appendix A. CP and RSCS Equate Symbols 279