LCRBK - 32-bit CP - V4R4.0

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

#### LCRBK

Prolog

Control Block Contents
LCRBK DSECT

Storage Layout

Cross Reference (Contains links to field and bit definitions)

#### LCRBK Prolog

     NAME       : HCPFCWDS
     DESCRIPTION: Locate Record Parameter
     DSECT      : LCRBK

#### LCRBK Control Block Content

#### LCRBK DSECT

    Hex   Dec Type/Val   Lng Label (dup)    Comments
    ---- ---- --------- ---- -------------- --------
    0000    0 Structure      LCRBK          Locate Record Parameter
    0000    0 Bitstring    1 LCROPER        Operation byte
    0001    1 Bitstring    1 LCRAUX         Auxiliary Byte
         LCRCMNSK is not actually a field in the LCR parm list. It is used by
         HCPFTR to address the SEEKA field in a way that allows use by routines
         that expect to see 00CCHH. These routines only deal with the CC portion
         so it does not matter what is actually in the first 2 bytes.
    0002    2 Bitstring    1 LCRCMNSK       Address of "SEEK"
    0003    3 Bitstring    1 LCRCOUNT       Record/track count
    0004    4 Bitstring    4 LCRSEEKA       Seek address: CCHH
    0008    8 Bitstring    4 LCRSRCHC       Search address: CCHH
    000C   12 Bitstring    1 LCRSRCHR       Search address: R
    000D   13 Bitstring    1 LCRSECTR       Sector address
    000E   14 Bitstring    2 LCRXFRLN       Transfer Length Factor
              .... ..11      LCRACCES       X'03' Mask to check authorization
              11.. ....      LCRECKD        X'C0' Mask to check architecture

#### LCRBK Storage Layout

    *** LCRBK - Locate Record Parameter
    *
    *     +------+------+------+------+---------------------------+
    *   0 |:OPER |LCRAUX|:CMNSK|:COUNT|         LCRSEEKA          |
    *     +------+------+------+------+------+------+-------------+
    *   8 |         LCRSRCHC          |:SRCHR|:SECTR|  LCRXFRLN   |
    *     +---------------------------+------+------+-------------+
    *  10
    *
    *** LCRBK - Locate Record Parameter

#### LCRBK Cross Reference

    Symbol         Dspl Value
    -------------- ---- -----
    LCRACCES       000E 03
    LCRAUX         0001
    LCRCMNSK       0002
    LCRCOUNT       0003
    LCRECKD        000E C0
    LCROPER        0000
    LCRSECTR       000D
    LCRSEEKA       0004
    LCRSRCHC       0008
    LCRSRCHR       000C
    LCRXFRLN       000E

This information is based on z/VM V4R4.0. Last updated on 29 Jul 2003 at 15:34:40 EDT.
Copyright IBM Corporation, 1990, 2003