SLPBK | Back to Index page

| Prolog Control Block Contents SLPBK DSECT Storage Layout Cross Reference (Contains links to field and bit definitions) |
Programming Interface Information: This information is NOT intended to be used as Programming Interfaces of z/VM.

SLPBK Prolog | Top of page

     NAME       : HCPSLPBK
     DESCRIPTION: Service-call Logical Processor control block
     DSECT      : SLPBK
     FUNCTION   : To provide a common data area used in the
                  management of the real Service-Call Logical
                  Processor (SCLP) interface
     LOCATED BY : SYSSLPBK in the system common area (HCPSYSCM)
     CREATED BY : HCPSEIEN
     DELETED BY : Once created, this control block is never
                  deleted
     RELOCATION CONSIDERATIONS : None

SLPBK Control Block Content | Top of page

     SLPBK DSECT
    Top of page

    Hex   Dec Type/Val   Lng Label (dup)    Comments
    ---- ---- --------- ---- -------------- --------
    0000    0 Structure      SLPBK          Service-call Logical Processor control block
    0000    0 Signed       4 SLPRDEV        Address of the integrated
                                            console's RDEV
    0004    4 Signed       4 SLPRDPM#       The message number of the the
                                            currently active read prompt
    0008    8 Address      4 SLPRDEVG       Integrated 3270 RDEV address
    000C   12 Bitstring    1 SLPFLAG0
              .... ...1      SLPprep        X'01' SLPprep HCPSEIEN needs to
                                            prep SLPBK
              0000000D       SLPEND         * End of the SLPBK

SLPBK Storage Layout | Top of page

    *** SLPBK - Service-call Logical Processor control block
    *
    *     +---------------------------+---------------------------+
    *   0 |         SLPRDEV           |         SLPRDPM#          |
    *     +---------------------------+------+--------------------+
    *   8 |         SLPRDEVG          |:FLAG0| D
    *     +---------------------------+------+
    *
    *** SLPBK - Service-call Logical Processor control block

SLPBK Cross Reference | Top of page

    Symbol         Dspl Value
    -------------- ---- -----
    SLPprep        000C 01
    SLPEND         000C 0000000D
    SLPFLAG0       000C
    SLPRDEV        0000
    SLPRDEVG       0008
    SLPRDPM#       0004

This information is based on z/VM 7.2.0 Last updated on 24 Jun 2020 at 09:30:34 EDT.
Copyright IBM Corporation, 1990, 2020