CNTDSECT | Back to Index page

| Prolog Control Block Contents CNTDSECT 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.

CNTDSECT Control Block Content | Top of page

     CNTDSECT DSECT
    Top of page

    Hex   Dec Type/Val   Lng Label (dup)    Comments
    ---- ---- --------- ---- -------------- --------
    0000    0 Structure      CNTDSECT       , DSECT TO DESCRIBE COUNT FIELD
    0000    0 Bitstring    8 COUNTCNT (0)
    0000    0 Bitstring    4 COUNTCCCH (0)  28-BIT CYLINDER ADDRESS
    0000    0 Signed       2 COUNTCC        CYLINDER
    0002    2 Signed       2 COUNTHH        HEAD
    0004    4 Bitstring    1 COUNTR         RECORD NUMBER
    0005    5 Bitstring    1 COUNTKL        KEY LENGTH
    0006    6 Signed       2 COUNTDL        DATA LENGTH NOTE:KL+DL=0 MEANS
                                            END OF FILE

CNTDSECT Storage Layout | Top of page

    *** CNTDSECT - Control Block in CNTDSECT
    *
    *     +-------------+-------------+------+------+-------------+
    *   0 |  COUNTCC    |  COUNTHH    |COUNTR|:NTKL |  COUNTDL    |
    *     +-------------+-------------+------+------+-------------+
    *   8
    *
    *** CNTDSECT - Control Block in CNTDSECT

CNTDSECT Cross Reference | Top of page

    Symbol         Dspl Value
    -------------- ---- -----
    COUNTCC        0000
    COUNTCCCH      0000
    COUNTCNT       0000
    COUNTDL        0006
    COUNTHH        0002
    COUNTKL        0005
    COUNTR         0004

This information is based on z/VM 7.2.0 Last updated on 24 Jun 2020 at 09:32:28 EDT.
Copyright IBM Corporation, 1990, 2020