Programming Interface Information: This information is NOT intended to be used as Programming Interfaces of z/VM.

#### LDCBK

Prolog

Control Block Contents
LDCBK DSECT

Storage Layout

Cross Reference (Contains links to field and bit definitions)

#### LDCBK Prolog

     NAME       : HCPLDCBK
     DESCRIPTION: ISFC Line Driver Constants
     DSECT      : LDCBK
     FUNCTION   : Map initialization parameters for an ISFC link device.
     LOCATED BY : Found in HCPFCA.
     CREATED BY : HCPFCA    part of the resident module.
     DELETED BY : Does not apply (data contained within a module).
     SERIALIZED : The ISFC global lock (HCPBDSGL).

#### LDCBK Control Block Content

#### LDCBK DSECT

    Hex   Dec Type/Val   Lng Label (dup)    Comments
    ---- ---- --------- ---- -------------- --------
    0000    0 Structure      LDCBK          ISFC Line Driver Constants
    0000    0 Signed       4 LDCENTAL       ADD LINK ROUTINE ADDRESS
    0004    4 Signed       4 LDCENTDL       DELETE LINK ROUTINE ADDRESS
    0008    8 Signed       4 LDCENTRS       RESET ROUTINE ADDRESS
    000C   12 Signed       4 LDCENTRD       READ ROUTINE ADDRESS
    0010   16 Signed       4 LDCENTRX       READ COMPLETE ROUTINE ADDR
    0014   20 Signed       4 LDCENTWR       WRITE ROUTINE ADDRESS
    0018   24 Signed       4 LDCENTWX       WRITE COMPLETE ROUTINE ADDR
    001C   28 Signed       4 LDCDEFBC       DEFAULT BUFFER COUNT
    0020   32 Signed       4 LDCMINBC       MINIMUM BUFFER COUNT
    0024   36 Signed       4 LDCMAXBC       MAXIMUM BUFFER COUNT
    0028   40 Bitstring    1 LDCTYPE        DEVICE TYPE
    0029   41 Bitstring    3 *              RESERVED
    002C   44 Signed       4 *              Reserved
    0030   48 Dbl-Word     8 *              Reserved
              00000038       LDCLN          *-LDCBK LENGTH OF CONSTANTS
                                            (BYTE)

#### LDCBK Storage Layout

    *** LDCBK - ISFC Line Driver Constants
    *
    *     +---------------------------+---------------------------+
    *   0 |         LDCENTAL          |         LDCENTDL          |
    *     +---------------------------+---------------------------+
    *   8 |         LDCENTRS          |         LDCENTRD          |
    *     +---------------------------+---------------------------+
    *  10 |         LDCENTRX          |         LDCENTWR          |
    *     +---------------------------+---------------------------+
    *  18 |         LDCENTWX          |         LDCDEFBC          |
    *     +---------------------------+---------------------------+
    *  20 |         LDCMINBC          |         LDCMAXBC          |
    *     +------+--------------------+---------------------------+
    *  28 |:TYPE |////////////////////|///////////////////////////|
    *     +------+--------------------+---------------------------+
    *  30 |///////////////////////////////////////////////////////|
    *     +-------------------------------------------------------+
    *  38
    *
    *** LDCBK - ISFC Line Driver Constants

#### LDCBK Cross Reference

    Symbol         Dspl Value
    -------------- ---- -----
    LDCDEFBC       001C
    LDCENTAL       0000
    LDCENTDL       0004
    LDCENTRD       000C
    LDCENTRS       0008
    LDCENTRX       0010
    LDCENTWR       0014
    LDCENTWX       0018
    LDCLN          0030 00000038
    LDCMAXBC       0024
    LDCMINBC       0020
    LDCTYPE        0028

This information is based on z/VM V5R2.0. Last updated on 12 Apr 2006 at 17:00:43 EDT.
Copyright IBM Corporation, 1990, 2005