COMBUFF | Back to Index page

| Prolog Control Block Contents COMBUFF 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.

COMBUFF Prolog | Top of page

     NAME       : CSEPVMBK
     DESCRIPTION: Buffer between CSE/SSI and CP
     DSECT      : COMBUFF
     RELOCATION CONSIDERATIONS : None

COMBUFF Control Block Content | Top of page

     COMBUFF DSECT
    Top of page

    Hex   Dec Type/Val   Lng Label (dup)    Comments
    ---- ---- --------- ---- -------------- --------
    0000    0 Structure      COMBUFF        Buffer between CSE/SSI and CP
    0000    0 Character    1 COMINDEX       C*1 Index of a VM/ISF system
    0001    1 Character    1 COMFIL1        C*2 Unused
    0002    2 Character    2 COMNUM         Number of items in the buffer
              00000004       COMFXSZ        (*-COMBUFF) Size of the fixed
                                            area
    0004    4 Signed       4 COMITLN        Length of item
    0008    8 Dbl-Word     8 COMDAT (0)     The data
              00000008       COMHDSZ        (*-COMBUFF) Header size

COMBUFF Storage Layout | Top of page

    *** COMBUFF - Buffer between CSE/SSI and CP
    *
    *     +------+------+-------------+---------------------------+
    *   0 |:INDEX|:FIL1 |   COMNUM    |         COMITLN           |
    *     +------+------+-------------+---------------------------+
    *
    *** COMBUFF - Buffer between CSE/SSI and CP

COMBUFF Cross Reference | Top of page

    Symbol         Dspl Value
    -------------- ---- -----
    COMDAT         0008
    COMFIL1        0001
    COMFXSZ        0002 00000004
    COMHDSZ        0008 00000008
    COMINDEX       0000
    COMITLN        0004
    COMNUM         0002

This information is based on z/VM 7.2.0 Last updated on 24 Jun 2020 at 09:26:40 EDT.
Copyright IBM Corporation, 1990, 2020