Hexadecimal Field
Displacement Name Field Description, Contents, Meaning 5EO 5E1
5E2
5E3
5E4
5E6
5E7
5E8 OPTFLAGS DC 1X'00' A*9 Option flags NOIMPEX EQO NOIMPCP EQU NOSTDSYN EQU NOABBREV EQU NOPAGREL EQU NOREAD EQU in OPTFLAGS --Xi 80i ---- No implied EXEC commands
No implied CP commands
No standard synonyms MISFLAGS DC KXSWITCH EQU KOSWITCH EQU RELPAGES EQU GRAFDEV EQU QSWITCH EQU NODDSK EQU NEG ITS EQU ATTNHIT EQU MSGFLAGS DC NOTYPOUT EQU NOTYPING EQU NORDYMSG EQU NORDYTIM EQU REDERRID EQU NOERRMSG EQU NOERRTXT EQU SPECLF EQU DBGFLAGS DC DBGEXEC EQU DBGPGMCK EQU DBGEXINT E"" \O!U DBGABN EQU DBGNSHR EQU DBGSHR EQU DBGRECUR EQU DC EXECFLAG DC PROTFLAG DC X'40' X'20' X'10' X'08' X'04' 1X'00' in MISFLAGS --X'80'---- X'40' X'20' X'10' X'08' X'04' X'02' X' 0 l' 1X'00' in MSGFLAGS --X'80'---- X'40' X'20' X'10' X'08' X'04' X'02' X'01' 1X'00' in DBGFLAGS --X'80'---- X'40' VI"nw A-'V X'10' X'08' X'04' X'02' 2X'00' 1X'00' 1X'00' QI PRFPOFF EQU X'80' PRFTSYS EQU X'40' PRFUSYS EQU X'20' No command abbreviations
No automatic page release
No automatic VMj370 console read A*10 Miscellaneous flags
Halt execution switch
Halt tracing switch
Release pages switch
Graphics console
Quiet switch for console read
Do not access D-disk
Negative return code from DMSITS Attention posted
A*11 Message flags
No typing -set by EXEC No typing -set by HT
No ready message to te typed
No time on ready message
Error code to be typed in red
No error messages to be tYFed No text on error messages
Linefeed for typewriter CCli A*12 DEEUG flags DEEUG routine executing DEEUG entered by a program check entered "" .... an external J.i..a.;. ..... U.l DEEUG entered from DMSABN No shared segment present
Shared segment present
Recursion flag
Reserved for IBM use
A*13 EXEC flags EXEC command running
A*14 Storage protection flags ;n+crrnr+ - ...... '-'--- -r- Storage protection is shut off
System routine in transient area
System routine in user area TSOFLAGS DC 1X'00' A*15 TSO flag tyte !1! TSOFLAGS TSOATCNL EQU X'80'--- Read canceled by attention NUCCN Section 2. CMS rata Areas and Control Blocks 215

NUCON Eexadecimal Field
Displacement Name Field Description, Contents, Meaning SE9
SEA
SEB
SEC SFO SF4
SF8
SFC 600 600 604 608 60C 610 614
618
61C 620 624
628
62C 630 634
638
63C 640 644
648
64C 650 654
658
6SC 660 664
668
66C 670 674
678
67C 680 684
688 SUBFLAG DC 1X'00' A*16 CMS subset flag byte !!J:!§ SUBREJ EQU SUBRTN EQU SUBINIT EQU SUBACT EQU in SUBFLAG --X'08'--- X'04' X'02' X'01' Subset command reject Subset return Subset initialization
Subset active DCSSFLAG DC X'OO' A*17 DCSS indicators !!J:!§ DCSSAVAL EQU in DCSSFLAG --X'80'---- DCSSLDED EQU DCSSCPNV EQU DCSSLDSD EQU DCSSVTNA EQU DCSSVTLD EQU DCSSOVLP EQU DCSSJLNS EQU X'40' X'20' X'10' X'08' X'04' X'02' X'01' DC ASYSNAMS DC ACMSSEG DC ADMSLIO DC VCFSTLKP DC VCFSTLKW DC X'OO' V (SYSNAMES) F'O' V (DMSLIO) V (DMSLFS) V (DMSLFSW) !Yfley§ SYSREF AFVS AOPSECT ADEVTAB AFSTLKP AGETCLK AFSTLKi APIE AIADT AUSER ARDTK ASCANN ASSTAT ATABEND ASUBSECT AOSMODL AWRTK ASTRINIT IADT
AFREE
AFRET ADMSPIOC APGMSECT AIOSECT ADMPEXEC ADIOSECT AABNSVC ADMSERL ADMSCRD ADMSFREB ASVCSECT AADTLKP AUPUFD ASTATEXT AOSRET ACMSRET Address Table -j)s----on---- DC V (FVS) DC V (OPSECT) DC V (DEVTAB) DC V (FSTLKP) DC V(DMSINM) DC V (FSTLKW) DC V (PIE) DC V (IADT)
DC V (USERSECT) DC V (D DC V (D MSSCNN) DC A (0) DC V (TABEND)
DC V (SUBSECT) DC A (0) DC V (D MSDIOW) DC V (D MSSTGST) DC V (ADTSECT) DC V (FREE)
DC V (FRET)
DC V (D MSPIOCC) DC V (PG MSECT) DC V (IOSECT) DC V DC V (DIOSECT) DC DC V (DMSERL) DC V (DMSCRD)
DC V (DMSFREB)
DC V (SVCSECT) DC V (ADTLKP)
DC V (DMSAUDUP) DC A (0) DC V (OSRET) DC V (CMSRET) CMSS!G segment exists CMSS!G loaded CP or invalid command issued
Loading S-disk DMSSVT not available DMSSVT is loaded
virtual machine storage overlaid CMSS!G just loaded nonshared
Reserved for IBM use
Address of CMS saved segment
EALR equivalent of FSTLKP EALR equivalent of FSTLKi 216 IBM VM/370 Data Areas and Control Block Logic
by ncss