PSA Hexadecimal Field
Displacement Name 240 240 244 248 24C 250 254 258
25C 260 264 268
26C 270 274 278
27C 280 280 284
288
28C 290 294 298
29C 2AO 2A4 2A8
2AC 2BO 2B4
2B8
2BC 2CO 2FO 2F8 300 308 308 309 30C 30E 310 318 320 328 330 338
33C 340 344 BALRSAVE DS BALRO BALR1
BALR2
BALR3
BALR4
BALR5
BALR6
BALR7
BALR8
BALR9 BALR10 BALR11 BALR12
BALR13
BALR14
BALR15 ORG DS DS DS DS DS DS DS DS DS DS DS DS DS DS DS DS FREESAVE DS ORG FREERO DS FREER1 DS FREER2 DS FREER3 DS FREER4 DS PREER5 DS FREER6 DS FREER7 DS FREER8 DS FREER9 DS FREER10 DS FREER 11 DS FREER12 DS FREER13 DS FREER14 DS FREER15 DS FREEiORK DS DATE DS TODATE DS STARTIME DS CPOID DS ORG CPOVERSN DS CPUSER DS CPO MODEL DS CPOMCELL DS IDLEiAIT DC PAGEiAIT DC IONTiAIT DC PROBTIME DC RUNPSi DS RUNOSER DS DSPLPSi DS RONCRO DS RUNCR1 DS 16F BALRSAVE 1F
1F 1F 1F
1F
1F
1F
1F
1F
1F
1F
1F
1F
1F
1F
1F
16F FREESAVE 1F
1F
1F
1F
1F
1F
1F
1F
1F
1F
1F
1F
1F
1F
1F
1F
12F
CL8
1D
1D
1D CPOlD 1X 3X 2X 1H
Field Description, Contents, EALR linkage save area
Registers 0-15 tMKFRE save area
Registers 0-15 tMKFRE work area Date - mm/dd/yy - edited BECDlC TOD clock at hh.mm.ss today -local time Date and time started - TOt clock value
Processor identification field Version code
Processor serial numler - unsigned
Processor model number Maximum length in lytes of MCEL X'7FFFFFFFFFFFFOOO' iotal system idle wait time X'7FFFFFFFFFFFFOOO' iotal system page wait time X'7FFFFFFFFFFFFOOO' Total system I/O wait time X'7FFFFFFFFFFFFOOO' iotal system problem state time 1D PSi last loaded by dispatcher
1F Address of dispatched V!ELCK 1F Load PSi instruction used to disFatch
1F Control register 0 at dispatch
1F Control register 1 at dispatch
72 IBM VM/370 Data Areas and Control Block Logic

Hexadecimal Field
tisplacellent Nalle
------------
348 CPSTAT DS ORG 348 CPSTATUS DS CPiAIT EQO CPRUB EQU CPEX EQU CPFVRUN EQU CPSUPER EQU 349 XTNDLOCK DC
34A CPSTAT2 DC !!i!§ CP1UCAVL EQU CPIUCON EQU CPSBRLK EQU CPASTAVL EQU CPASTON EQU 34B CPSTAT3 DS !!i!§ CPT IDLE EQU CPTPAGE EQU CPTIOBT EQU 34C CPRESTRT DS 350 PGREAD DS 354 PGWRlTE DS 358 PGWAlTIM DS 360 PGWAlTPG DS 368 PSASVCCT DS 36C PAGELOAD DS 36E PAGERATE DS 370 PSENDCLR DS 370 CPID DS 374 CPA BEND DS 378 PSTARTSV DS 378 SYSIPLDV DS 37A PGSRATlO DC 37C ASYSVM DC 380 ARSPPR DC
384 ARSPPU DC
388 ARSPRD DC 38C ARIOPU DC 390 ARIOPR DC
394 ARIORD DC
398 lPUADDR DS 39A PSAl!SS DS 1F CPSTIT 1X in CPSTATOS -X'80'-- X'40' X'20' X'10' X'OS' 1X 1X in CPSTAT2 --X'80'-- X'40' X'20' X'OS' X'04' 1X in CPSTAT3 --X'80'-- X'40' X'20' 1F
1F
1F
1D
1D
1F
1B P*1 1B P*2 OF 1F
1F OF 1B F*3 B'O' P*4 V (D MKSYSVM) V (DMKRSPPR) V (D MKRSPPU) V (DMKRSPRD) V (D MKRIOPU) V CD MKRlOPR) V (D MKRlORD) 1B P*5 1H P*6 Field Description, Contents, l!eaning -------------------------------------- CP running status CP running status CP in wait state CP running user in RUNOSBR CP executing stacked request
Reserved for IBM use
Processor is executing in supervisor state PSA System extending free storage if it is equal to IlPF'. Note that XTNDLOCK is 1D absolute FSa. Flag byte Virtual machine assist available on processor Virtual machine assist is cn 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 numter of page reads
Total number of page writes
Time spent in page wait, multiplied by number
of pages waiting
Reserved for IB! use
Total number of user SVCs Page wait percent, last measurement
Paging rate, pages per seccnd
Note that PAGERATE is in absolute PSA. End of area cleared by D!KCFINT CP running identifier. Note that CPID is
in absolute PSA. CP abend code Start of save/restored code
Device address of system lft device Page steals/total replenished
Address of system V!BLCK 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 !SS volume
The !SS is online and the !SS communicator has been initialized
Section 1. CP Data Areas and Centrel Blocks 73