PSA r- 5COI 1 6001 1----- 6401 Aug. 1 .. 1979 MFASAVE SiTHSAVE LOCKSAV 1------------------------------_·----- 6501 SVCREGS 660 PREFIXA 1 PREFIXBI PSACPXBPIIIRESVD//l --------------------------------------1 670 WAITSTRT iAITEND 1 -----------------------------------------1 680 PiTPAGESIACTIVTRQI EMSPEND 1 EMSREC I --------------------------------------1 690 XCPEND IP*7IP*8 IP*91 APSTATUS 1 ---------------------------1 6AO AMCHAREAISHRLKCNTI PROBSTRT , Hexadecimal Field
Displacement Name l1.schilliE Usage
o IPLPSi DS 1D
8
8
C 10 14 10 18 20 28 30 38 40 48
4C 50 54
58 60 68 70 78 ORG RSRTNPSi DS RSRTOPSi OS IPLCCi1 OS ORG PSARSV3 DS TRACSTRT DS TRACEND DS TRACCURR DS IPLCCi2 DS EXOPSi OS SVCOPSW DS PROPSW OS MCOPSW DS IOOPSW DS CSW DS CAW DS QUANTUMR DS TIMER OS QUANTUM DS EXNPSi OS SVCNPSW OS PRNPSi OS MCNPSi DS IONPSW OS IPLPSW 1D
1D 10 IPLCCW1 1F
1F
1F
1F
1D 10 10 10 10 10 1D
1F
1F
1F
1F 10 1D 10 10 10 .------------------- I 6BOI CHGREGS IRUN370E IRESERVED/I , 1 6COI UNSHRVM IP*10IP*111/////RESERVED//II/1 I I 6DOI STACKVM IUNSHRVM2 IADMKCPE IRESERVED/I 1 , 6EOI//I//II//I/RESERVED (cont) 1//////11/1/' 1 1 6FOI ALOKUM IRESERVE I ALOKSP I AEXTSP 1 I , 7001 ATMRSN 1/111/1/1/IRESERVED///IIIIIII' I 1 7101 MONREGS I 1 I I 7501 , LOKSAVE2 Field Description, Contents .. Meaning IPL start PSi Restart new PSW Restart old PSi IPL CCW Reserved for IBM use
Address of start of trace table.
Note that TRACSTRT is in absolute PSA Address of end of trace table.
Note that TRACEND is in absolute PSA Address of next available trace table entry.
Note that TRACCURR is in absolute PSA IPL CCi External old PSi SVC old PSi Program old PSi Machine check old PSi I/O old PSi Channel status word
Channel address word
Interval timer value at last interrupt
13-microsecond interval timer
Interval timer value at last dispatch
External new PSi SVC new PSi Program new PSi Machine check new PSW I/O new PSi 70 IBM VM/370 Data Areas and Control Block Logic

Hexadecimal
Displacement
------------
348
348
349
34A 3lfB 34C 350 354
358 360 368
36C
36E 370 370 374
378
378
37A
37C 380 384
388
38C 390 394
398
39A
Field
Name CPSTAT DS ORG CPSTATUS DS Bits defined CPWAIT EQU CPRUN EQU CPEX EQU CPFVRUN EQU CPSUPER EQU XTNDLOCK DC CPSTAT2 DC gefined CPMICAVL EQU CPMICON EQU CPSHRLK EQU CPASTAVL EQU CPASTON EQU CPSTAT3 DS deli!led CPT IDLE EQU CPTPAGE EQU CPTIONT EQU CPRESTRT DS PGREAD DS PGWRITE DS PGWAITIM DS PGWAITPG DS PSASVCCT DS PAGELOAD DS PAGERATE DS PSENDCLR DS CPID DS CPABEND DS PSTARTSV DS SYSIPLDV DS PGSRATIO DC ASYSVM DC ARSPPR DC ARSPPU DC ARSPRD DC ARIOPU DC ARIOPR DC ARIORD DC IPUADDR DS PSAMSS DS 1F CPSTAT 1X in CP2TATUS X'80' X'40' X'20' X'10' X'08' 1X 1X 111 CP21ATl X'80' X'40' X'20' X'08' X'04' 1X in X'80' X'40' X'20' 1F
1F
1F
1D
1D
1F
1H
1H OF 1F
1F OF P*1 P*2 1H P*3 H'O' P*4 V (DMKSYSVM) v (DMKRSPPR) V (DMKRSPPU) V (DMKRSPRD)
v (DMKRIOPU) v (DMKRIOPR) v (DMKRIORD) 1H P*5 1H P*6
Bits dei!!!ed in PSAMSS MSSPRES EQU --X'80-'-- Aug. 1, 1979
Field Description, Contents, Meaning CP running status CP running status CP in wait state CP running user in RUNUSER CP executing stacked request
Reserved for IBM use
Processor is executing in supervisor state PSA System extending free storage if it is
equal to X'FP'. Note that XTNDLOCK is in
absolute PSA. Flag byte Virtual machine assist available on processoc Virtual machine assist is on for system CP processing shared named system page CP assist available on processor CP assist is on for system
wait time accounting flag
Timer contains idle time
Timer contains page wait time
Timer contains I/O wait time
Restart address if external interrupt marks
page invalid
Total number of page reads
Total number of page writes
Time spent in page wait, multiplied by numbec of pages waiting
Reserved for IBM use
Total number of user SVCs Page wait percent, last measurement Paging rate, pages per second
Note that PAGERATE is in absolute PSA. End of area cleared by DMKCPINT CP running identifier. Note that CPID is
in absolute PSA. CP abend code
start of save/restored code
Device address of system IPL device
Page steals/total replenished
Address of system VMBLOK Address of system printer file chain.
Address of system punch file chain.
Address of system reader file chain.
Address of system punch table.
Address of system printer table.
Address of system reader table.
Instruction processing address
Address of MSS volume
The MSS is online and the MSS communicator has been initialized
section 1. CP Data Areas and Control Blocks 73