## CP Data Areas and Control Blocks
z/VM Ver 6, Rel 1.0

Programming Interface Information: These web pages primarily document information that is NOT intended to be used as a Programming Interface of z/VM. These web pages also document intended Programming Interfaces that allow the customer to write programs to obtain the services of z/VM. This information is identified where it occurs by an introductory statement.

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#### CP Control Blocks, A to Z

A B C D E F G H I J K L M

N O P Q R S T U V W X Y Z

If the control block you choose is part of a larger control block, the larger is displayed.

    ACABK        - Map CASBKs at beginning of VEXBK.
    ACCBK        - Initial file system access block
    ACIPARMS     - ACCESS CONTROL INTERFACE PARAMETERS
    ACOBK        - User Accounting Record Format
    ACPBK        - CP Access Pointer Block
    ACSBK        - CP Access Block
    ACTBK        - ISFC CP Application activation control block
    ADDIN        - CP ADD-on INitialization Routines
    ADRBK        - Automatic Device Recovery Block
    ADSR         - Symptom Record
    ADSRCMPS     - Symptom Record
    ADSRDBST     - Symptom Record
    ADSRROSD     - Symptom Record
    ADSR5ST      - Symptom Record
    AEBK         - Asynchronous Event Block
    AFFBK        - AFFinity management control BlocK
    ALCBK        - Access-List Control Block
    ALEBK        - Access List Entry
    ALET         - Access List Entry Token
    ALOC         - DASD VOLUME ALLOCATION BLOCK
    ALOCEXT      - DASD allocation record mapping for
    ALSBK        - Access List Services control block.
    ALTREC       - ALERT RECORDING RECORD
    AMSG         - Asynchronous Event Message
    AMTE         - ASIT Management Table Entry for PTRM
    AMTW         - Asynchronous Message Task Work Request
    AOFPARM      - Parameter list for HCPACUOF
    AONPARM      - Parameter list for HCPACUON
    AREXBK       - Queue entry containing a pending IORBK
    ARIBK        - Access Real Subsystem Information Block
    ARMGE        - Access Real Subsystem Message Entry
    ARSBK        - Access Register SaveBk sidecar
    ARSDT        - Access Real Subsystem Data Area
    ARSPL        - Access Real Subsystem Parameters
    ARUBK        - Access Real Subsystem Unsolicited
    ARUSE        - Access Real Subsystem Unsolicited
    ASA64        - AUXILIARY STORAGE ADDRESS TABLE ENTRY
    ASBK         - Map the Associate Request Block
    ASCBK        - Address-Space-Control Block
    ASCE         - Address-Space-Control Element
    ASDBK        - Address Space Dependent Block
    ASIBK        - Address Space Information Block
    ASIZBK       - Address Space Information Block
    ASMBK        - PTRM Address Space Management Block
    ASPBK        - Active Spool File Block for *SPL
    ASRBK        - Assert monitor call parameter mapping
    ASTE         - ASN-Second-Table Entry
    ATCBK        - ATTACH COMMAND BLOCK
    A0LBK        - Diagnose A0 (subcode x'24') list entry
    A0UBK        - Diagnose A0 (subcode x'24') list entry
    BELBK        - Block I/O entry list
    BIOPG        - DASD Block I/O Storage Management Block
    BIOPL        - Block I/O Parameter List
    BITMP        - Bit Map Control Block
    BKIBK        - Block I/O Block for DIAGNOSE X'250'
    BLEBK        - CP application interface table ctl block
    BLEFM        - CP application interface table ctl block
    BLEHD        - CP application interface table ctl block
    BLKIO        - *BLOCKIO Device Connection Data
    BMGBK        - Bit map control block (z/architecture mode)
    BMPBK        - Bit map control block
    BMSBK        - BUFFER MANAGEMENT SERVICE CONTROL BLOCK
    BOXBK        - LOGO BLOCK
    BPLBK        - *BLOCKIO parameter list dsect
    BPQBK        - BUFFER PENDING QUEUE BLOCK
    CAABK        - CP-use Address space Allocation block
    CABUFFER     - Channel Adapter Buffer
    CACBK        - Virtual CTC Adapter Control Block
    CALBK        - Cluster Allocation List Block
    CAPBK        - Connection Block for Advanced Printers
    CARBK        - ISFC CP Application Request/Response
    CASBK        - Map Contiguous Available Slots
    CBIBK        - Control Block Identifiers and Lengths
    CCED         - APPC/VM CONNECTION COMPLETE EXTENDED DATA BLOCK
    CCHREC       - VM/XA MAPPING OF THE S/370 CHANNEL
    CCTBK        - Communications Control Table
    CCWTT        - Channel Program Translation Tables
    CCWTTE       - Channel Program Translation Tables
    CFEBK        - Map the HCPIODCW resident data area
    CFGLF        - CONFIGURATION BLOCK.
    CFNLF        - CONFIGURATION NAME TABLE.
    CFREC        - *CONFIG Configuration Record
    CHCBK        - CHANNEL CLASS BLOCK
    CHGBK        - External Symbol Dictionary Change Block
    CHNDX        - CHANNEL INDEXING BLOCK
    CHPBK        - SPXTAPE Channel Program Block
    CHRBK        - DEVICE / SUBCHANNEL INDEX STRUCTURE
    CINBK        - Callers information block.
    CITBK        -
    CKIBK        - SYSTEM CHECK POINT INTERFACE BLOCK
    CKPBK        - SYSTEM CHECK POINT CONTROL BLOCK
    CLNBK        - Monitor Command Line Block
    CMDBK        - Command Table Entry Block
    CMPBK        - Component Id Block
    CNNBK        - Connectivity (aka ISFC) address space
    CNODE        - Collision node for MDC hash table.
    CNUBK        - USER DATA MAPPING FOR *IDENT
    COMBK        - Console Communications Control Block
    COMBUFF      - Buffer between VM/CSE Comm V.M. and CP
    CONBK        - APPCVM CONNECT BLOCK
    CONDF        - Syntax statement definition area
    CONWK        - Configuration File Work Area
    COPYSYST     - Copy of Shared Systems Table
    CPABK        - CPUBK ANCHOR BLOCK
    CPCBK        - CHANNEL PROGRAM CONTROL BLOCK
    CPEBK        - CP TASK EXECUTION BLOCK
    CPECSRV      - CONNECTION PENDING EXTENDED DATA (CPED)
    CPED         - CONNECTION PENDING EXTENDED DATA (CPED)
    CPEFASI      - CONNECTION PENDING EXTENDED DATA (CPED)
    CPEFASIS     - CONNECTION PENDING EXTENDED DATA (CPED)
    CPEFCOR      - CONNECTION PENDING EXTENDED DATA (CPED)
    CPEFLUW1     - CONNECTION PENDING EXTENDED DATA (CPED)
    CPEFLUW2     - CONNECTION PENDING EXTENDED DATA (CPED)
    CPEFMH5      - CONNECTION PENDING EXTENDED DATA (CPED)
    CPEPIP       - CONNECTION PENDING EXTENDED DATA (CPED)
    CPEPIPMP     - CONNECTION PENDING EXTENDED DATA (CPED)
    CPESGIDV     - CONNECTION PENDING EXTENDED DATA (CPED)
    CPIBK        - CP information data area overlays
    CPTBK        - Channel program initialization block
    CPTCA        - See PLAS version for details.
    CPUBK        - CPU DATA BLOCK
    CPVOL        - System Volume List Entry
    CPVWK        - LOCK/UNLOCK Command work area
    CRDREC       - CHANNEL REPORT WORD ERROR RECORD
    CRWBK        - CHANNEL REPORT WORD BLOCK
    CSEBUFBK     - CSEBUFBK buffer layout
    CSEEBFBK     - CSL buffer block for ECKD devices
    CSEEHDBK     - CSL header record for ECKD devices
    CSEHDRBK     - CSE header record on each CSE track
    CSESCTBK     - VM/CSE SPOOL SYNCRONIZATION TRACE ENTRY
    CSESDTBK     - VM/CSE SPOOL DIAGNOSE TRACE ENTRY
    CSETTPTR     - CSE Trace Table Pointers
    CSFBK        - CHANGE SPOOL FILE ROUTINE COMMUNICATIONS BLOCK
    CSIBK        - Mappings for Diagnose x'26C'
    CSICCSTR     - Mappings for Diagnose x'26C'
    CSICPLST     - Mappings for Diagnose x'26C'
    CSICRESP     - Mappings for Diagnose x'26C'
    CSICVSTR     - Mappings for Diagnose x'26C'
    CSIGASTR     - Mappings for Diagnose x'26C'
    CSIGGSTR     - Mappings for Diagnose x'26C'
    CSIGPLST     - Mappings for Diagnose x'26C'
    CSIGRESP     - Mappings for Diagnose x'26C'
    CSIGUSTR     - Mappings for Diagnose x'26C'
    CSILPLST     - Mappings for Diagnose x'26C'
    CSIMPLST     - Mappings for Diagnose x'26C'
    CSIMRESP     - Mappings for Diagnose x'26C'
    CSIPDSTR     - Mappings for Diagnose x'26C'
    CSIPMSTR     - Mappings for Diagnose x'26C'
    CSIPNSTR     - Mappings for Diagnose x'26C'
    CSIPPLST     - Mappings for Diagnose x'26C'
    CSIPRESP     - Mappings for Diagnose x'26C'
    CSIPSSTR     - Mappings for Diagnose x'26C'
    CSIPTSTR     - Mappings for Diagnose x'26C'
    CSISRESP     - Mappings for Diagnose x'26C'
    CSIVASTR     - Mappings for Diagnose x'26C'
    CSIVLSTR     - Mappings for Diagnose x'26C'
    CSIVPLST     - Mappings for Diagnose x'26C'
    CSIVRESP     - Mappings for Diagnose x'26C'
    CSIVRSTR     - Mappings for Diagnose x'26C'
    CSIVSSTR     - Mappings for Diagnose x'26C'
    CSIVUSTR     - Mappings for Diagnose x'26C'
    CSIVVSTR     - Mappings for Diagnose x'26C'
    CSLPL        - Console macro parameter list
    CSPBK        - SPOOL Command Communications Block
    CSSENTRY     - IUCV System service attribute table map
    CTCBK        - ISFC Link Extension for CTCA devices
    CTCPGTBL     - ISFC Link Extension for CTCA devices
    CTF          - DASD Count, Key and Data field layout
    CTRBK        - Fast CCW Translation BlocK
    CUIBK        - CONTROL UNIT INFORMATION BLOCK
    CUIRR        - CUIR Message Task Request
    DALBK        - Dumped Access List Block
    DAPPC        - Directory APPCPASS Security Parameter Block
    DAWBK        - DATATRACE TYPE DATA WORKAREA
    DBCBK        - Diagnose X'BC' file descriptions
    DBCWK        - DASD Block I/O work block
    DBEBK        - ISFC Directory Broadcast entry block.
    DBHBK        - ISFC Directory Broadcast header block
    DBIRQ        - DASD BLOCK I/O SSCH REQUEST DATA
    DCHBK        - Diagnose Control Header
    DCMPI        - Define Command Program Interface Plist
    DCPU         - Directory CPU Block
    DCRBK        - DELAYED CONNECT REQUEST BLOCK
    DCTBL        - Device Characteristics Table
    DDCBK        - Diagnose 'DC' Control Block
    DDEV         - DIRECTORY DEVICE DEFINITION BLOCK
    DDRREC       - DYNAMIC RECONFIGURATION RECORD
    DD4PARM0     - ALTERNATE USER SUPPORT INTERFACE FOR DIAG X'D4'.
    DD8PARM0     - Parameter List Dsect for HCPSFB
    DEARG        - Define Extent CCW argument mapping
    DEDBK        - Dynamic Exit Definition Block
    DE4PL        - DIAGNOSE X'E4' Parameter List
    DFDA         - FBA Define Extent data area
    DFIR         - DUMP FILE INFORMATION RECORD
    DFIZ         - DUMP FILE INFORMATION RECORD
    DFIZCPU      - DUMP FILE INFORMATION RECORD
    DFMBK        - Dump file map record
    DFRMP        - DDEV Frame Map
    DFXBK        - Define Extent Parameter
    DF8PARM      - Diagnose X'F8' Parameter List
    DGDBK        - Directory generic data block
    DGFBK        - Directory FCP IPL block
    DGNBK        - Diagnose Table Entry Block
    DGRPM        - Directory POSIX group member block
    DGSBK        - Directory generic string block
    DHDR         - Directory header block
    DIOBK        - Dynamic I/O control block.
    DIUCV        - DIRECTORY IUCV BLOCK
    DLSBK        - Data Link State Block
    DLUBK        - Dynamic Load/Unload Block
    DMPINREC     - VM/370 SYSTEM PRODUCT DUMP INFORMATION RECORD
    DNSA         - DIRECTORY NSS/DCSS AUTHORIZATION BLOCK
    DNXBK        - Directory index block
    DPLID        - DIAGNOSE Parameter List Identifier
    DPSBK        - Dasd Programming Services Block
    DRBK         - CP Data Request Block
    DRCBK        - DASD RECOVERY BLOCK
    DRMBK        - Delayed Response Message Block
    DRWBK        - DASD Read/Write Channel Program Block
    DSCBK        - Demand Scan Control Block
    DSGR         - Directory supplementary group IDs block
    DSIBK        - Dump Space Information Area
    DSLBK        - DISJOINT STORAGE LIST
    DSSBK        - Data Space Services Block.
    DSTBK        - Parameter / work area for DEFINE STORAGE
    DSVBK        - DiSpatch Vector BlocK
    DTCBK        - Detach Command Control Block
    DTFBK        - DATATRACE TRACE RECORD FORMAT BLOCK
    DTLBK        - DATALINK SOURCE
    DUCT         - Dispatchable Unit Control Table
    DUNDX        - DIRECTORY USER INDEX BLOCK
    DVIENTRY     - DASD Virtual I/O Parameter List
    DVIOP        - DASD Virtual I/O Parameter List
    DVMD         - GUEST VIRTUAL MACHINE DIRECTORY BLOCK
    DVTRK        - DASD Virtual TRacK list node
    DXDA         - Define Extent data area
    DXLPL        - DIAGNOSE X'278' (XLINK) Parameter List
    DX1BK        - Minidisk extent index level 1.
    DX2BK        - Minidisk extent index level 2.
    D29000       - Diagnose x'290' parameter block
    D29004       - Diagnose x'290' parameter block
    D88PARM0     - Diagnose 88 parameter list
    EASIT        - External-Address-Space-Identification
    ECBBK        - Event Control Block
    EDEV         - EMULATION DEVICE BLOCK
    EDEVBX       - EMULATION DEVICE BLOCK
    EDEVPATH     - EMULATION DEVICE BLOCK
    EDEVSIM      - EMULATION DEVICE BLOCK
    EMSBK        - EMERGENCY SIGNAL SIGP TASK BLOCK
    EREXTCST     - CHANNEL PROGRAM DSECT BLOCK
    EREXTEST     - CHANNEL PROGRAM DSECT BLOCK
    EREXTFST     - CHANNEL PROGRAM DSECT BLOCK
    EREXT2ST     - CHANNEL PROGRAM DSECT BLOCK
    ERSADDR      - ERROR RECOVERY SPECIFICATION
    ERSTBL       - ERROR RECOVERY SPECIFICATION
    ESDBK        - External Symbol Dictionary Block
    EVNBK        - C System Services Event block
    EVTBK        - ANCHOR FOR PROCESSOR LOCAL WORKAREAS
    EXCBK        - DIAGNOSE X'280' exec() block
    EXCVROBJ     - DIAGNOSE X'280' exec() block
    EXDBK        - exec() data block
    EXPBK        - EXPOSURE BLOCK
    EXPQUENT     - EXPOSURE BLOCK
    EXQBK        - exec() request block user data mapping
    EXRBK        - exec() remote data map block
    EXTBK        - Extent Block
    FASBK        - VMDUMP File Address Space Information
    FCLBK        - FCP List Directed IPL Block Mapping
    FCLVPARM     - Variable Parameter Information Block
    FCSPL        - FCP List Directed IPL Parameter List
    FCTBK        - Fast CCW Translation BlocK
    FILID        - File identification table
    FINBK        - FLOATING EXTERNAL INTERRUPT CONTROL BLOCK
    FIOBK        - FORMATTED I/O BLOCK
    FLSPT        - Spool-to-Tape list of files to dump
    FMASK        - File Mask Equates
    FMLRC        - VOLUME LABEL RECORD
    FORBK        - The FOR control block.
    FORCTBL      - The FOR control block.
    FORMS        - System spool output forms and user forms
    FPXSA        - Floating Point Extended Save Area
    FREBK        - FREE STORAGE BLOCK
    FRMTE        - FRAME TABLE ENTRY
    FRUBK        -
    FRUREC       -
    FRXAN        - Storage pool statistics
    FSATE        - FIXED STORAGE ASSIGNMENT TABLE ENTRY
    FSBK         - CP File Status Block
    FSCBK        - Free Storage Counter Block
    FSDBK        - Free Storage Data Block
    FSHBK        - CP File Status Head
    FTPBK        - FOOT-PRINT BLOCK
    FTXBK        - Frame Table Extent Block
    F2IDAL       - Format-2 IDAW Mapping
    GALPL        - Generalized Associative Lookup
    GCCW         - GUEST CHANNEL CONTROL WORD MAPPING
    GRBK         - Guest response block
    GSDBK        - GENERAL SYSTEM DATA BLOCK
    GSXBK        - Cross system communication block
    HALBK        - Host-ART lookaside block
    HCCW         - HOST CHANNEL CONTROL WORD
    HCIBK        - Hardware Console Integration Message Buffer
    HDPBK        - Host DAT table Programming area block
    HDPQPTRA     - Host DAT table Programming area block
    HDRREC       - COMMON HEADER FOR ERROR RECORDS
    HFOBK        - Monitor I/O Domain Hi-Frequency Sample Data Area
    HFPBK        - Monitor Processor Domain Hi-Freq Sample Data Area
    HFUBK        - Monitor User Domain Hi-Frequency Sample Data Area
    HFYBK        - Monitor System Domain Hi-Frequency Sample Data
    HLQBK        - Harware Loader Queue Block
    HPPBK        - HYPERPAV ALIAS POOL BLOCK
    HPVBK        - HYPERPAV ALIAS POOL BLOCK
    HRLBK        - Human Readable Label Table Block
    HSABK        - Hardware System Storage Control Block
    HSHAV        - Minidisk Cache Collision Node Available
    IASIT        - Internal-Address-Space-Identification
    ICLBK        - Indirect Call Locator Block
    ICRBK        - Indirect Call Request Block
    IDAL         - INDIRECT DATA ADDRESS LIST MAPPING
    IDHBK        - Spool Image Library Directory Header
    IDMBK        - Spool Image Library Directory Member
    IDSBK        - ISFC ID segment table
    IDSEGENT     - ISFC ID segment table
    IDSLTENT     - ISFC ID segment table
    IDTPL        - *IDENT internal routine parameter list
    ILMBK        - IP LAN Management block
    IMGBK        - Image library/NLS Message Repository
    IMHBK        - Spool Image Library Member Header Block
    IOCM         - I/O Completion Block
    IOIP         - INPUT/OUTPUT INTERRUPTION CODE MAPPING
    IOPBK        - I/O Passthrough Block
    IORBK        - I/O Request and Response Block
    IOWBK        - DATATRACE TYPE IO WORKAREA
    IPARM        - IPL parameters
    IPARML       - IUCV/APPC parameter list and external
    IPARMLX      - APPC CONNECT PLIST EXTENSION MAPPING
    IPAX         - IPL parameters
    IPLBK        - IPL Command Work Buffer
    IPLREC       - System Initialization (IPL) record
    IPMBK        - IP Multiple Entry structure
    IPMLM_ENTIP  - Multiple Entry structure
    IPMQC_ENTIP  - Multiple Entry structure
    IPNBK        - IP Node block
    IPQBK        - I/O Priority Queueing Parameter Block
    IPQXBK       - I/O-Priority Event Information Pending Queue
    IPTRGMAP     - Map IPTRGCLS from IPARML COPY
    IRBLK        - INTERRUPTION RESPONSE BLOCK MAPPING
    IRCBK        - *IDENT Resource Communication block
    IRCVRGID     - *IDENT Resource Communication block
    IRCVROBJ     - *IDENT Resource Communication block
    IRMBK        - INTENSIVE RECORDING MODE BLOCK
    ISFDEVTB     - Definition tables for Cross System
    ISFEXTAB     - Definition tables for Cross System
    ISFNAMTB     - Definition tables for Cross System
    ISFSYSTB     - Definition tables for Cross System
    ISFVOLTB     - Definition tables for Cross System
    ISFXLSTB     - Definition tables for Cross System
    ITRBK        - Host DAT Table Iterator Control Block
    IUCVB        - IUCV CONTROL BLOCK
    IUSBK        - IUCV WORK AREA MAPPING MACRO
    IUUBK        - IUCV USERID AUTHORIZATION BLOCK
    IXBLK        - IUCV DEFERRED EXECUTION BLOCK
    LABK         - Map the Load Anchor Block
    LANBK        - Virtual LAN block
    LANRDD       - Virtual LAN block
    LANVID       - Virtual LAN block
    LATBK        - C System Services Latch block
    LBPBK        - LOADBUF Parameter Block
    LBXBK        - Language Block Extension
    LCDA         - Locate data area
    LCKBK        - LOCK BLOCK
    LCKLF        - CFLF LOCK TABLE (LCK)
    LCRBK        - Locate Record Parameter
    LDCBK        - ISFC Line Driver Constants
    LDDBK        - LOGICAL DISPLAY DEVICE SIMULATION BLOCK
    LDFPL        - Load file via FTP parameter list
    LDVBK        - ISFC Link Device Extension
    LEDA         - Locate Record Extended data area
    LGFBK        - LOGOFF control block
    LGNBK        - LOGON work buffer
    LGPBK        - HCPUSODC and HCPUSORF Parameter List
    LKBK         - Minidisk LINK Block
    LKIWD        - Defer-lock (I/O) "Lockword"
    LKSBK        - Linkage Stack block
    LKWRD        - Defer-lock "lockword"
    LLNBK        - Link Layer (MAC) Node
    LLXBK        - Link Layer Index Table entry
    LLXITEM      - Link Layer Index Table entry
    LMMWK        - "LOCATE in memory" command work area
    LNGBK        - Language Information Block
    LNKBK        - ISFC Link Definition Block
    LOCBK        - C System Services Lock block
    LOGMS        - LOGON MESSAGE BLOCK
    LQWBK        - LOCATE CMDBK and QUERY CPCMDS Work area
    LRARG        - Locate Record CCW argument mapping
    LRBK         - Map the Load Request Block
    LRDA         - Locate Record data area
    LSBLOCK      - Library Statistics Block
    LSOBJ        - LOGICAL SUBCHANNEL OBJECT
    LSRBK        - LOCAL SYSTEM REQUEST BLOCK
    LUNBK        - LU Name COntrol Block
    MBEBK        - ISFC Mailbox entry block
    MCFBK        - Trace Service Tool Monitor Call Trace
    MCHREC       - MACHINE CHECK ERROR RECORD
    MCKBK        - MACHINE CHECK DESCRIPTOR BLOCK
    MCPBK        - Monitor CPVOL Paging/Spooling Block
    MCRBK        - Machine Check Record Block
    MCVBK        - VIRTUAL MACHINE CHECK BLOCK
    MDAS         - Map MDC addr spaces represented in the TCMBK
    MDCBK        - Storage area for SET MDC/Q MDC cmnds
    MDEADENT     - ISFC Message Descriptor Block
    MDEBFENT     - ISFC Message Descriptor Block
    MDEBK        - ISFC Message Descriptor Block
    MDGBK        - MONDIAG control block
    MDISK        - Mini-disk Control Block
    MDRREC       - MISCELLANEOUS DATA RECORD
    MESIX        - Message Repository Contents
    MESMS        - Message Repository Contents
    MESPN        - Message Repository Contents
    MESP1        - Message Repository Contents
    MIDAW        - Modified indirect data addressing word mapping
    MIHBK        - MISSING INTERRUPT HANDLER INFO BLOCK
    MIHDR        - MISSING INTERRUPT HANDLER HEADER BLOCK
    MIOBJ        - MISSING INTERRUPT OBJECT
    MIRREC       - 370 MODE MISSING INTERRUPT RECORD
    MITREC       - 370/XA MODE MISSING INTERRUPT RECORD
    MKPDU        - LinkAG Marker Protocol-Data-Unit (PDU)
    MLDBK        - Mapping List Definition Block.
    MLDENTRY     - Mapping List Definition Block.
    MLEBK        - Member List Entry Block
    MLTBK        - Multi-Level Table definition
    MMLBK        - Monitor Message List
    MONEQ        - Monitor Equate Symbols
    MONSK        - Monitor SEEKs Mapping
    MPEBK        - Minidisk pool extent block.
    MPLBK        - Map Parameter List BlocK.
    MRQBK        - Diagnose 98 Multiple Request Block
    MRQFCNLK     - Diagnose 98 Multiple Request Block
    MSABK        - Map of Slot Allocation
    MSDBK        - Monitor Send Block
    MSGBK        - MESSAGE BLOCK MAPPING MACRO
    MSMPR        - HCPMSM ParameteR passing block.
    MSTBK        - MESSAGE TEXT DATA BLOCK
    MSVBK        - Mappings for MAC Services Control Block
    MTEBK        - MONITOR TRANSACTION-END DATA BLOCK
    MUC_COM_TMon - User Control Block
    MUCBK        - Monitor User Control Block
    MWBK         - Multiple address space (MAS) Work area
    MWTBK        - Monitor Writer Control Record Block
    MXRBK        - MESSAGE NUMBER CROSS-REFERENCE BLOCK
    NAMBK        - TRSOURCE NAME TABLE
    NCABK        - Network Card Accounting Block.
    NDCBK        - Virtual Network Interface Card block
    NDMBK        - Network Device Message Block
    NEDBK        - Node Element Descriptor Block
    NEQBK        - Node Element Qualifier Block
    NICBK        - Virtual Network Interface Card block
    NIDBK        - Network Interface Device Block.
    NIDVID       - Network Interface Device Block.
    NODBK        - ISFC Node description block
    NSABK        - NSS/DCSS AUTHORIZATION BLOCK
    NSCPR        - HCPNSCPR parameter list mapping
    NSDBK        - DEFSEG/DEFSYS parameter control block
    NSGBK        - GENERAL INTERFACE CONTROL BLOCK TO HCPNSG
    NSSBK        - SAVESEG/SAVESYS parameter control block
    NSUBK        - Auxillary Storage Management utility data
    OBJSTMT      - Various object deck record formats.
    OBRREC       - OUTBOARD RECORDING RECORD
    OFBK         - CP Open File Block
    OLTBLE       - Address Space Information Block
    OPCTB        - OPERATOR CONSOLE DEVICE NUMBER TABLE
    OPNBK        - ISFC CP Application open control block
    ORBLK        - OPERATION REQUEST BLOCK MAPPING
    PAGBK        - Page I/O DSECT Block
    PAGG         - Page Table Entry for z/Architecture
    PAG39        - ESA/390 Page Table Entry
    PAG64        - Page Table Entry
    PCBUF        - putchar() Buffer
    PCCBK        - PROCESSOR CONTROLLER SERVICE CALL DATA BLOCK
    PCDBK        - PROCESSOR CONTROLLER DIAGNOSE DATA BLOCK
    PCRBK        - PROCESSOR CONTROLLER REQUEST BLOCK
    PCSBK        - PROCESSOR CONTROLLER STATUS BLOCK
    PDEBK        - PATH DESCRIPTOR ENTRY
    PDSBK        - Partitioned Data Set Block
    PEDBK        - Product Enablement Data Block
    PFCRHDR      - Persistent FlashCopy Relationship Table
    PFCRTABL     - Persistent FlashCopy Relationship Table
    PFKPL        - Program Function Key Parameter List
    PFMBK        - PAGEABLE FREE MANAGMENT BLOCK
    PFUNC        - CP Program Function Key anchor
    PFXPG        - PREFIX PAGE FOR ALL HOST CPU'S
    PF2PG        - PREFIX PAGE FOR ALL HOST CPU'S
    PGEBK        - Page Allocation Management Block
    PGM64        - Page Management Block
    PGS64        - PAGE STATUS TABLE ENTRY
    PIDAWBK      - Paging I/O Format 2 IDAW for paging
    PIOBK        - Paging I/O CCW packages.
    PIRBK        - Page Interrupt Return control BlocK.
    PLSBK        - PROCESSOR LOCAL STORAGE BLOCK
    PPABK        - Point to Point Accounting Block.
    PPFBK        - PSEUDO PAGE FAULT STACK BLOCK
    PPIBK        - PAG/PAH INTERFACE BLOCK
    PPLBK        - Product Parameter List Block
    PPRLG        - Pending Page Release Log
    PRLOG        - layout for prolog at beginning of module
    PRMBK        - HCPJRLIT call parameter list
    PROBK        - PROTECT BLOCK
    PSF          - CHANNEL PROGRAM DSECT BLOCK
    PSFBK        - PURGE SPOOL FILE CONTROL BLOCK
    PSGBK        - POSIX supplementary GIDs Block
    PSIBK        - Previous System Image block
    PSST         - PTE Serialization Status Tracking block
    PTESET       - Map an area in the TCMBK for a given PTE set size
    PTHBK        - ISFC Path description block
    PTRMB        - Page Table Resource Management block
    PTTBK        - Page Translation (HCPPTZMT) parameters
    PURBK        - Minidisk Cache Purge block
    PWDBK        - Block to store journaling information
    PXIBK        - POSIX IDs Block
    QALBK        - Query Alloc Block
    QDGBL        - V-Disk Global Control Block
    QDIO         - Queued Direct I/O Control Block
    QDISK        - Q-Disk Control Block
    QHDBK        - Query Spool Files Response Headers and
    QPXBK        - Interface for POSIX ID query requests
    QRBLK        - Queue Request Block
    QSBLK        - (QSBLK) QDIO Statistics Block
    QSFBK        - QUERY SPOOL FILES DESCRIPTOR BLOCK
    QUEBK        - Queue Control Block
    RALOCCST     - CHANNEL PROGRAM DSECT BLOCK
    RALOCEST     - CHANNEL PROGRAM DSECT BLOCK
    RALOCFST     - CHANNEL PROGRAM DSECT BLOCK
    RCCBK        - RCPU DATA AREA MAPPING
    RCDBK        - READ CONFIGURATION DATA BLOCK
    RCPTE        - REFERENCE AND CHANGE PRESERVATION TABLE ENTRY
    RCWBK        - CURRENT REAL CHANNEL CONTROL WORDS
    RDCBK        - Real Device Characteristics Block
    RDEV         - REAL DEVICE CONTROL BLOCK
    RDLBCST      - CHANNEL PROGRAM DSECT BLOCK
    RDLBEST      - CHANNEL PROGRAM DSECT BLOCK
    RDLBFST      - CHANNEL PROGRAM DSECT BLOCK
    RECBK        - RECORDING RECORD FORMAT BLOCK
    REFBK        - Page References Services Parameter Block
    REFENTRY     - Page References Services Parameter Block
    REGBK        - User Exit Registration Block
    REQBK        - Request block
    RLDBK        - Relocation Dictionary Block
    RPABK        - Parameter list for HCPRPA
    RQHDR        - SAVBK Return Queue Header Block
    RQPARM       - The Parameter List transmitted between systems
    RRTBLE       - Address Space Information Block
    RSAAVNKR     - RSM common area mapping
    RSEBK        - Reset Event Block
    RSHBK        - RSPBK Header Block
    RSMANCHR     - RSM common area mapping
    RSMBK        - RSM common area mapping
    RSPBK        - REAL SPOOL DEVICE BLOCK
    RSSBK        - RECORDING SYSTEM SERVICE BLOCK
    RTEBK        - Region-Table Entry
    RTHBK        - RECORDING TABLE HEADER BLOCK
    RTVBK        - CP Program Function Key Retrieve Block
    SABCM        - SOFT ABEND COMMON AREA
    SALBK        - Slot Allocation Data Block
    SAMBK        - SNAPPED AREA'S MAP BLOCK
    SATBK        - Soft abend Correlation Table entry
    SAVBK        - CALL WITH SAVEAREA BLOCK
    SBILIST      - Synchronous Block I/O Parameter
    SBIOP        - Synchronous Block I/O Parameter
    SCABK        - System Control Area for Interpretive
    SCCLK        -
    SCFBK        - System Config File Parsing plist
    SCGBK        - 64 byte Subchannel Measurement Block
    SCHIB        - SUBCHANNEL INFORMATION BLOCK MAPPING
    SCLBK        - *SCLP IUCV System Service Block
    SCLCHTEN     - *SCLP IUCV System Service Block
    SCMBK        - SUBCHANNEL MEASUREMENT BLOCK
    SCQBK        - Native SCSI Container QDIO Control
    SCTBK        - SPOOL FILE CLASS TITLE BLOCK
    SCTLF        - CFLF SUBSYSTEM CONNECT TABLE ENTRY
    SCUBK        - Security symbol table control block
    SDBBK        - ISFC Send Data Buffer block
    SDBLSENT     - ISFC Send Data Buffer block
    SDDATA       - TCMBK steal info for Main stg or XSTORE
    SDDBK        - SET DUMP DATA
    SDFBK        - SYSTEM DATA FILE BLOCK
    SDLBK        - SPOOLING DATA LOCATOR BLOCK
    SDMBK        - SNAP DATA MAP BLOCK
    SDMCM        - Common Data Area for Storage Device Management
    SDPG         - SNAP DATA PARAMETER LIST
    SDPL         - SNAP DATA PARAMETER LIST
    SDRREC       - STATISTICAL DATA RECORDING BLOCK
    SECBK        - An element of the SECONDARY USERIDS TABLE
    SEGG         - z/Architecture Segment Table Entry
    SEGG         - z/Architecture Segment Table Entry
    SEG37        - Segment Table Entry for 370
    SEG39        - ESA/390 - Segment Table Entry
    SEG64        - SEGMENT TABLE ENTRY
    SEPPAG1      - Printer separator page definition
    SEPPAG2      - Printer separator page definition
    SEPTRL       - Printer separator page definition
    SESBK        - MPC User Session Block
    SFBLOK       - VM/SP 370 SPOOL FILE CONTROL BLOCK
    SFNDX        - CHECKPOINT SPOOL FILE POINTERS
    SFXBK        - SOFTWARE EXTERNAL INTERRUPT CONTROL BLOCK
    SGIOP        - Synchronous General I/O Parameters
    SGPBK        - Segment Space/Saved System Parameter
    SGTBK        - SAVED GUEST TIMERS BLOCK
    SHPBK        - Map/Generate CSE Sys Definition Table
    SHPQITEM     - VM Cross-System Requests
    SHQBK        - SPOOL HOLD QUEUE
    SHRBK        - SHARE BLOCK
    SIABK        - Spool Id Allocation Map
    SIDBK        - SYSTEM ID LIST
    SIEBK        - SIE STATE DESCRIPTOR BLOCK
    SILBK        - Spool 3800 Image Load Block
    SI1BK        - SIE STATE DESCRIPTION (format 1)
    SI2BK        - SIE STATE DESCRIPTOR BLOCK (format 2)
    SLDBK        - map-Save-List Definition BlocK.
    SLDINPAG     - map-Save-List Definition BlocK.
    SLDPAGER     - map-Save-List Definition BlocK.
    SLHREC       - SUBCHANNEL LOGOUT ERROR RECORD
    SLMBK        - System LAN Management block
    SLPBK        - Service-call Logical Processor control block
    SLTBK        - Save-List Task BlocK.
    SNABK        - SNA Resource Block
    SNDBK        - *BLOCKIO's IUCV SEND Request Block
    SNSBK        - SENSE DATA BLOCK
    SNSID        - CHANNEL PROGRAM DSECT BLOCK
    SNSID        - SENSE ID Data Mapping
    SNTBK        - System Name Table Block
    SOCACPL      - ISFC Socket function parameter list
    SOCBIPL      - ISFC Socket function parameter list
    SOCCCPL      - ISFC Socket function parameter list
    SOCCLPL      - ISFC Socket function parameter list
    SOCCNPL      - ISFC Socket function parameter list
    SOCCPPL      - ISFC Socket function parameter list
    SOCCRPL      - ISFC Socket function parameter list
    SOCCSPL      - ISFC Socket function parameter list
    SOCLCPL      - ISFC Socket function parameter list
    SOCPL        - ISFC Socket function parameter list
    SOCRMPL      - ISFC Socket function parameter list
    SOCRPPL      - ISFC Socket function parameter list
    SOCRQPL      - ISFC Socket function parameter list
    SOCRXPL      - ISFC Socket function parameter list
    SOCSNPL      - ISFC Socket function parameter list
    SOCSQPL      - ISFC Socket function parameter list
    SOCTXPL      - ISFC Socket function parameter list
    SOTBK        - SPOOL OPTIONS TABLE ENTRY BLOCK
    SPABK        - SPOOL FILE ALLOCATION BLOCK
    SPDBK        - SPOOL FILE DATA PAGE BLOCK
    SPFBK        - SPOOL FILE DESCRIPTOR (OR CONTROL) BLOCK
    SPGBK        - Spool File Get Block
    SPIBK        - Space Permission Information BlocK
    SPLINK       - VM/SP 370 SPOOL FILE DATA BLOCK
    SPMBK        - SPOOL FILE MAP PAGE BLOCK
    SPRBK        - Spool File Reply Block
    SPTBK        - SPTAPE and SPXTAPE 'Spool to Tape'
    SPXBK        - Interface for POSIX ID set requests
    SRBBK        - Symptom Record Building Parameter List
    SRMBK        - SYSTEM RESOURCE MANAGEMENT BLOCK
    SRTBK        - SYSTEM RESOURCE TABLE ENTRY BLOCK
    SRXBK        - System Resource Management block extensions
    SR3BK        - Symptom Record Primary Symptom Strings
    SR3REGS      - Symptom Record Primary Symptom Strings
    SR3RETC      - Symptom Record Primary Symptom Strings
    SR3RIDSS     - Symptom Record Primary Symptom Strings
    SR5BK        - Symptom Record Section Five
    SSBDF        - Syntax subdefinition description area
    SSCBK        - SYSTEM SERVICE CONTROL BLOCK
    SSDBK        - SYSTEM SMOOTHED DATA BLOCK
    SSHBK        - User Share Settings control block
    SSHVBK       - User Share Settings control block
    SSIBK        - System Information Block Dsect
    SSMBK        - SNAP SAVEAREAS MAP BLOCK
    SSPBK        - Pointer block to SSBDF blocks
    SSQBK        - SPXTAPE Section Quorum Block
    STADF        - Syntax state definition area
    STCONFIG     - Address-Space-Control Block
    STD          - Architected version of the ESA/390
    STDBK        - SYSTEM TERMINATION DATA BLOCK
    STDG         - Architected version of the z/Arch
    STHLF        - SUBSYSTEM TABLE HEADER BLOCK
    STLBK        - SEGMENT TABLE ENTRY LIST BLOCK
    STLTE        - Segment Table List Block Table Entry
    STPBK        - SHARED-TAPE CONTROL BLOCK
    SUBBK        - Subpool Data Area Block
    SVGBK        - Linkage savearea, longreg format
    SVHBK        - Common linkage savearea header
    SVMREC       - SPECIAL VM RECORD
    SWIBK        - DSECTS and EQUATES for z/VM Virtual Switch
    SWPBK        - VSWITCH Port Group Block
    SXEWK        - Storage Extension Work Area
    SXIDABK      - DIAGNOSE X'64' SEGMENT EXTENDED INPUT AREA
    SXODABK      - DIAGNOSE X'64' SEGMENT EXTENDED OUTPUT AREA
    SXSTE        - SXS Page Management Table Entry
    SYMLH        - Symbol LOCATE Header Block
    SYMPT        - Symbol LOCATE Pointer Block
    SYMTB        - Symbol Table Entry
    SYNBK        - FORMAL SPIN LOCK CONTROL BLOCK
    SYNCBUFF     - Synchronization Buffer
    SYNDF        - Syntax definition description area
    SYSCM        - SYSTEM COMMON AREA
    SZQBK        - IOSC_queryDevice Information Block
    SZQDEVIN     - IOSC_queryDevice Information Block
    SZQPTHIN     - IOSC_queryDevice Information Block
    SZQSTATE     - IOSC_queryDevice Information Block
    SZQSTATS     - IOSC_queryDevice Information Block
    SZREQ        - SCSI Strategy Call Request Block
    SZVHB        - Save area header and linkage used for CP C
    SZVIN        - SCSI Container SIC global block
    SZVMA        - Save area header and linkage used for CP C
    SZVSB        - Save area header and linkage used for CP C
    SZWRS        - SCSI Container Write same control block
    S0CCW        - SPOOLing Format 0 Channel Control
    S1CCW        - SPOOLing Format 1 Channel Control
    TAPBK        - SPXTAPE Tape Drive Control Block
    TBFBK        - Trace service tool Buffer Format Block
    TBTBK        - Traceback table
    TCHBK        - Track Cache Hash block
    TCHSTDFM     - Track Cache Hash block
    TCMBK        - Full Track Cache Main Control Block
    TDHBK        - TRACE SERVICE TOOL DIAGNOSE READ HEADER BLOCK
    TDRBK        - TRACE SERVICE TOOL DIAGNOSE READ
    THRBK        - Throttle Control Block
    TIC_STK_LMAP - OF FORWARD TIC STACK
    TICENT       - TIC Entry
    TICST        - MAPPING OF FORWARD TIC STACK
    TKTBK        - SPXTAPE File Control Information Block
    TOKDF        - Syntax token definition area
    TPCBK        - TAPE PATHING CONTROL BLOCK
    TPEBK        - TAPE CONTROL BLOCK
    TPLBK        - TAPE LABEL CONTROL BLOCK
    TRCBK        - Traceid block
    TRDBK        - TRACEID/TRACESET DISPLAY CHAIN ENTRY
    TRGBK        - ISFC CP Application target control block
    TRPBK        - TRACE TRAP BLOCK
    TRQBK        - TIMER REQUEST BLOCK
    TRSBK        - TRACE SET BLOCK
    TRWBK        - TRACE Work Block
    TRXBK        - TRACE EXTENSION BLOCK
    TSABK        - TRSAVE definition block
    TSDBK        - TRACE SERVICE DASD BLOCK
    TSKBK        - Task Control Block
    TSTBK        - Trace Service Tool Block
    TTABK        - Table of Trace Entry Codes
    TTEBK        - TRACE TABLE ENTRY FORMAT
    TTPBK        - TRACE TABLE PAGE FORMAT
    TTSBK        - TRACE TABLE SAVE ENTRY FORMAT
    TTYFLG       - HCPTYI AND HCPTYO PARAMETERS
    TXCCM        - TRSOURCE COMMON DATA AREA
    TXLPL        - PARAMETER LIST FOR TRCBK CHAIN SERVICES
    TZABK        - Time Zone Anchor Block
    TZDBK        - Time Zone Definition Block
    TZIBK        - Time Zone Interval Block
    T64LB        - TLB64 Entry (64 bit addresses)
    UALBK        - User Alias Block
    UDCTL        - HCPUDU Data Block
    UFORM        - System spool output forms and user forms
    UIDBK        - Monitor Userid Control Block
    UNLODBUF     - CHANNEL PROGRAM DSECT BLOCK
    UOPAG        - Page one of z/Arch PSW
    USVOL        - User volume descriptor
    USXBK        - User Security Extension Block
    UTRENT       - Untranslation Entry
    UWKPG        - INDICATE USER data block
    UZPAG        - PREFIX STORAGE AREA - MACHINE USAGE
    VDEV         - VIRTUAL DEVICE CONTROL BLOCK
    VDSBK        - VIRTUAL DEVICE SIMULATION BLOCK
    VDUBK        - Virtual Machine Dump Block
    VDUXTBL      - Virtual Machine Dump Block
    VEXBK        - Volume EXtent block
    VFCBK        - VIRTUAL FORMS BUFFER CONTROL BLOCK
    VFPBK        - Display/Dump Access List Control Block
    VINBK        - VMDUMP invocation block
    VIOMI        - Virtual I/O Management Information
    VIUBK        - VDEV I/O Assist Utilization Block
    VMCBLOK      - VMCF COMMUNICATIONS BLOCK
    VMCMHDR      - VMCF COMMUNICATION MESSAGE HEADER
    VMCPARM      - VMCF COMMUNICATIONS PARAMETER LIST
    VMDBK        - VIRTUAL MACHINE DEFINITION BLOCK
    VMQBK        - Plist for call to HCPVMQSM
    VNABK        - Virtual Network Authorization Block
    VNCBK        - Virtual Network Command parameters
    VNPBK        - HCPVINOP extended parameter list block
    VOPBK        - HCPVOP simulation fetch/store work area
    VPARM        - FCP List Directed IPL Parameter List
    VPG64        - VIRTUAL PAGE BLOCK
    VPLBK        - VARY Command Syntax Plist Definitions
    VPXBK        - VIRTUAL PRINTER EXTENSION BLOCK
    VRDCBLOK     - VIRTUAL/REAL DEVICE CHARACTERISTICS BLOCK
    VRYBK        - VARY Command Control area
    VSMBK        - Vtam Service Machine control BlocK
    VSPBK        - VIRTUAL SPOOLING DEVICE BLOCK
    VUDBK        - Vestigial User Data Block
    WALOCCST     - CHANNEL PROGRAM DSECT BLOCK
    WALOCEST     - CHANNEL PROGRAM DSECT BLOCK
    WALOCFST     - CHANNEL PROGRAM DSECT BLOCK
    WDATA        - VSIM common DAta area mapping
    WEBBK        - Work Element Block
    WEIBK        - Work Element Identifier Block
    WIDBK        - Work Indirect Data address BlocK
    WRMBK        - Warmstart workarea overlay
    WRPBK        - HCPWRP message text
    WRTLBCST     - CHANNEL PROGRAM DSECT BLOCK
    WRTLBEST     - CHANNEL PROGRAM DSECT BLOCK
    WRTLBFST     - CHANNEL PROGRAM DSECT BLOCK
    WSDIRECT     - vSIE shadow-table directory mapping
    WSDIRENT     - vSIE shadow-table directory mapping
    XBLBK        - XA buffer list block.
    XCRBK        - CP Exit Call Request Block
    XCTBK        - CP Exit Control Block
    XDRBK        - Expanded Storage Directory Block
    XITBK        - CP Exit Block
    XITPL        - Exit Plist
    XLDBK        - eXtent List Definition BlocK.
    XLDENTRY     - eXtent List Definition BlocK.
    XSEBK        - Expanded-Storage Element Block
    XSTMG        - Expanded storage management data
    XSUBK        - Expanded Storage Usability Map
    X0FFB        - Parm list pointers for exit 0FFB
    X00E0        - Parm list pointers for exit 00E0
    X00E1        - Parm list pointers for exit 00E1
    X11C0        - Parm list pointers for exit 11C0
    X11FF        - Parm list pointers for exit 11FF
    X1100        - Parm list pointers for exit 1100
    X1101        - Parm list pointers for exit 1101
    X1110        - Parm list pointers for exit 1110
    X117F        - Parm list pointers for exit 117F
    X1200        - Parm list pointers for exit 1200
    X1201        - Parm list pointers for exit 1201
    X1210        - Parm list pointers for exit 1210
    X3FE8        - Parm list pointers for exit 3FE8
    X4400        - Parm list pointers for exit 4400
    X4407        - Parm list pointers for exit 4407
    ZLCBK        - LOGO FILE TABLE BLOCK
    ZLEBK        - LOGO FILE LIST ENTRY BLOCK
    ZLXBK        - LOGO FILE EXTENSION BLOCK
    ZPLBK        - LOGO FILE PARM LISTS
    ZPMBK        - ZONE PARAMETER BLOCK
    ZSBBK        - Storage mapping for the results of
    ZSCBS        - HCPZSC BASES= plist

This information is based on z/VM V6R1.0. Last updated on 19 Feb 2010 at 05:18:18 EDT.
Copyright IBM Corporation, 1990, 2008