Page of SY20-0884-3 As Updated Aug. lr 1979 by TNL SN25-0497 PSA Hexadecimal Field
Displacement Name
39C3AO 3A4
3A8
3AC380 3B4
3B8
3BC3CO 3C4
3C8
3CC3DO 3D4
3D8
3DC3EO 3E4
3E8
3EC3FO 3F4
3F8
3FC400 ARSPAC DC AVMREAL DC ASYSABND DC ASYSLC DC ASYSOP DC ARIOCT DC
ARIOCH DCARIOCU DC ARIODV DC ARIOCC DC
ARIoue DCARIODC DC
ACORETBL DC
APAGCP DCCPCREGO DC
CPCREG6 DC
CPCREG8 DCTIMEDISP DS ASVCLIST DC AVMALIST DC LASTUSER DC PAGECUR DS MONNEXT DS PAGEND DS PAGENXT DS TRACEFLG DS v (DMKRSPAC) A (0) A (0) V (DMKSYSLC) V (DMKSYSOP) V (DMKRIOCT) V (DMKRIOCH) V CD MKRIOCU) V (DMKRIODV) V (DMKRIOCC) V (DMKRIOUC) V (DMKRIODC) V (DMKSYSCS) A(X'FFFFFF') X'808008CO' F'O' F'O' IF V (DMKSVCNS) V (DMKPRVMA) V (DMKSYSVM) IF IF IF IF IF Field Descriptionr Contentsr Meaning
Address of system accounting chainVMBLOK address of virtual=real user. Note
thatAVMREAL is maintained in both PSAs Address of system abend printer
Address ofSYSLOCS information
Address of system operatorVMBLOK Address of real channel index table
Address of first ReHBLOK
-Address of firstRCUBLOK Address of first RDEVBLOK Address of count of real system channels
Address of count of real system control units
Address of count of real system devices
Address of system CORTABLE
Address of first pageable programCP architecture control and external mask CP assist and virtual machine assist mask MONITOR CALL enable mask
Timer displacement for charge
Address ofCP assist pointer list
Address of expanded virtual machine assist
pointer list
Last user to be dispatched
Current monitor buffer page address.
Note thatPAGECUR is in absolute PSA. Next available address in monitor buffer.
Note thatMONNEXT is in absolute PSA. Last address in current monitor buffer page.
Note thatPAGEND is in absolute PSA. Alternate monitor buffer page address.
Note thatPAGENXT is in absolute PSA. Trace table flags ORG TRACEFLG 400 401 402 404 408 40A 40C TRACFLGl DS lX Bii2 defined TRACO 1 EQU TRAC02 EQU TRAC03 EQU TRAC04 EQU TRAC05 EQU TRAC67 EQU TRAC08 EQU TRAC09 EQU TRACFLG2 DS Bii2 TRACOA EQU TRACOC EQU TRACOD EQU TRACBEF EQU TRAC10 EQU TRACll EQU TRAC12 EQU TRAC13 EQU TRACFLG3 DS TTSEGCNT DS CSADDR DC PSARSV DS PSARSV1 DS in TRACFLGl --XIsO-'-- X'40' X'20' l' 10' X'08' 1'04' 1'02' X'Ol' lX in TRACFLG2 --X'80-'-- X'40' X'20' X' 10' X'08' X'04' X' 02' X'Ol' lH IF H' 0 '
H
1F
Trace table flag
External interrupt tracing onSVC interrupt tracing on Program interrupt tracing on
Machine check tracing onI/O interrupt tracing on
FREE/FRET call tracing on
Enter dispatch tracing on
Queue drop tracing on
Trace table flag
Run user tracing onUnstack I/O interrupt tracing on
virtualCSW stored tracing on SIO r TIO r and HDV tracing on Unstack IOBLOK or TRQBLOK tracing on
TraceBTU activity for 370x NCP Lock spin tracing active Signal processor tracing active
Reserved forIBM use
Count of total page/swap tables in system.
Note thatTTSEGCNT is in absolute PSA. P*7 Channel set address P*8 Reserved for IBM use
Reserved for IBM use74 IBM VM/370 Data Areas and Control Block Logic
Displacement Name
39C
3A8
3AC
3B8
3BC
3C8
3CC
3D8
3DC
3E8
3EC
3F8
3FC
ARIOCH DC
ARIoue DC
ACORETBL DC
APAGCP DC
CPCREG6 DC
CPCREG8 DC
Address of system accounting chain
that
Address of
Address of system operator
Address of first ReHBLOK
-Address of first
Address of count of real system control units
Address of count of real system devices
Address of system CORTABLE
Address of first pageable program
Timer displacement for charge
Address of
Address of expanded virtual machine assist
pointer list
Last user to be dispatched
Current monitor buffer page address.
Note that
Note that
Note that
Note that
H
1F
Trace table flag
External interrupt tracing on
Machine check tracing on
FREE/FRET call tracing on
Enter dispatch tracing on
Queue drop tracing on
Trace table flag
Run user tracing on
virtual
Trace
Reserved for
Count of total page/swap tables in system.
Note that
Reserved for IBM use