SY20-0884-3_Data_Areas_and_Control_Block_Logic_Update_Aug79.pdf
Page27(27 of 63)
Aug. 1, 1979 74.2 IBM VM/370 Data Areas and Control Block Logic
Aug. 1r 1979 PSA Hexadecimal Field Displacement Name Field Description, Contents, Meaning 434 438 43C 440 470 478 440 480 484 488 48C 490 494 498 49C 4AO 4A4 4A8 4AC 4BO 4B4 4B8 4BC 4CO 4C4 4C8 4CC 4DO 4D4 4D8 4DC 4EO 4E4 4E8 4EC 4FO 4F4 4F8 4FC 500 500 540 580 5CO 600 640 650 660 664 668 66C 670 678 680 684 INSTWBD2 DC INSTWRD3 DC· INSTWBD4 DC F'O' F'O' F'O' Reserved for installation use Reserved for installation use Reserved for installation use List of ZEBOES BLANKS FFS Fregue,!!tly .!!§ed Constants DC 6D'0' DC 8X'40' DC 8X' FF' Also -1 FO EQU ZEROES F1 DC F'1' F2 DC F'2' F3 DC F'3' F4 DC F'4' F5 DC F'5' F6 F7 F8 F9 F10 F15 F16 F20 F24 F60 F240 F255 F256 F4095 F4096 DC DC DC DC DC DC DC DC DC DC DC DC DC DC DC APTBLK DC NOADD DC X40FFS DC XBIGHT24 DC XPAGNUM DC XBIGHT16 DC AFBEE DC AFBET DC AQCNWT DC ADSPCH DC APTBAN DC X2048BND DC PSBCLR2 DS DUMPSAVE DS SIGSAVE DS LOKSAVE DS MFASAVE DS SWTHSAVE DS LOCKSAV DS SVCREGS DS PREFIXA DC PREFIXB DC PSACPXBP DC RESVD DS WAITSTRT DS WAITEND DS PWTPAGES DC ACTIVTRQ DC F'6' F'7' F'8' F'9' F'10' F'1S' F'16' F'20' F'24' F'60' F' 240' F' 2S5' F'256' F'4095' F'4096' v (DMKPTRLK) X'FFOOOOOO' X'40FFFFFF' X'OOFFFFFF' X'OOFFFOOO' X'OOOOFFFF' V (DMKFREE) V (DMKFRET) V (DMKQCNWT) V (DMKDSPCH) V (D MKPTRAN) X'00FFF800' OF 16F 16F 16F 16F 16F 4F 4F F'O' F'O' A (0) 1F D D F'O' A (0) Also Also Also Also Also Also Also X'OOOOOOOF' X'0000003C' X'OOOOOOFO' = X'OOOOOOFF' X'00000100' X'OOOOOFFF' X'00001000' Entry to lock a page in storage Frequently used work value Frequently used work value Isolate right 24 bits Isolate the page number Isolate the right 16 bits Entry to allocate free storage Entry to release free storage Entry to write a terminal message Entry to the VM/370 dispatcher Entry to the paging supervisor Locate a half-page boundary Start of second area cleared by CP initialization (DMKCPI) Save area for dump routine Save area for DMKEXT DMKLOK save area Save area for malfunction alert DMKVMASW save area LOCK macro save area SVC save area Prefix value of this processor Prefix value of other processor Address of CPEXBLOK for switch SVC. Note that PSACPXBP is in absolute PSA. Reserved for IBM use Timer value at start of wait Timer value at end of wait Pages in PGWAIT at start of wait Address of active transit queue Section 1. CP Data Areas and Control Blocks 75