NUCON Hexadecimal Pield Displacement Name 560 564
568
56C 570 574
578
57C 580 588
58C 590 592
593
594
598 5-AO 5A4
5A5
SAC 5BO 5B4 5CO 5CO 5C4
5C6
5C7
5C8
5CC 5DO 5D4
5D8
5DC Information VMSIZE --ns----1P- ALDRTBLS DC lP'O' STRTADDR DC lP'O' PRSTLOC DC lP'O' LASTLOC DC lP'O' LOCCNT DC lP' 0' LDRADDR DC IF'O' LDRRTCD DC lP'O' PSW DC lD'O' LDRPLAGS DC 1P'0' PRHOLD DC lP'O' TBENT DC H'O' UNRES DC X'OO' MODFLGS DC 1X • 00' !!.!!§ NOMAPFLG EQU CLEAROP EQU MODGNDOS EQU MODGNALL EQU SYSLOAD EQU MDPCALL EQU I10D6 EQU I10D7 EQU GETl DSYM NXTSYM DC
DC
DC
DC
DC ALIASENT DC DYNAEND DC DS FCBTAB DS FCBFIRST DC FCBNUM DC
DC OSSPLAGS DC COMPSWT EQU OSSMNU EQU OSRESET EQU OSWAlT EQU DYLD EQU DYLIBO EQU DYLIBNOW EQU DYMBRNM EQU DC LINKLAST DC
LINKSTRT DC TAXEADDR DC ATSOCPPL DC DCBSAV DC
in MODPLGS --X'80'--- X'40' X'20' X'10' X'08' X'04' X'02' X'Ol' 1F ';0 , 2F· 0' P'O' C'Z' XL7'0' 1F'0' lP' 0' 3F
Pointers -0i5----- A (0) H'O' X'OO' X'OO' in OSSFLAGS --X'80'---- X'40' 1'20' X'10' X'08' X'04' X'02' X'Ol' A (0) A (0) A (0) A (0) V (CPP) IF' 0' Field Description, Contents, eeaning Virtual storage size
Address of loader tatles I10dule starting address Module beginning address
Module ending address
Loader location counter
Loader return address
Loader return code
User's starting PSW Loader flags Pseudo register counter
Initialize table entries tc zeros
A*5 Unresolved reference bit for CMS loader
A*6 Flags A*7 A*8 NOMAP flag
CLEAR option flag Module generated with DOS option Module generated with ALL option
Allow load greater than FREELCWE than transient
Indicate module called by DMseDI Reserved for IBM use
Reserved for IBe use DMSLSY R1 save location work space -D1!-SI.-S 1- - u-n-i q-u-e id-en t i f ier ba se or less
First character of unique identifier
Rest of unique identifier
Alias entry point (dynamic load) Maximum load location (dynamic load)
Reserved for IBe use
FCE chain anchor
Address of first FCB Numter of FeBs in chain
Reserved for IBe use OS simulation flags
COlBpiler switch DMSSMN unconditional flag
Reset for as Wait for as
Dynamic loading in process Omit dynamic litrary scan Dynamic library scan
Linked via member nalBe
Reserved for IBe use
Address of last OS linkage block
Address of entry point of last module Terminal attention exit element address
Address of !MP PLIST for TSC programs DCE restoration address
214 IBM VM/370 Data Areas and Control Block Logic

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