LCRBK Back to Index page
 
Prolog 
Control Block Contents 
   LCRBK 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.


  LCRBK Prolog Top of page
 
 NAME       : HCPFCWDS
 DESCRIPTION: Locate Record Parameter
 DSECT      : LCRBK
 
 
  LCRBK Control Block Content Top of page
 

 LCRBK DSECT Top of page
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' LCRACCES Mask to check authorization 11.. .... LCRECKD X'C0' LCRECKD Mask to check architecture
 
 
  LCRBK Storage Layout Top of page
 
          
*** LCRBK - Locate Record Parameter
*
*     +------+------+------+------+---------------------------+
*   0 |:OPER |LCRAUX|:CMNSK|:COUNT|         LCRSEEKA          |
*     +------+------+------+------+------+------+-------------+
*   8 |         LCRSRCHC          |:SRCHR|:SECTR|  LCRXFRLN   |
*     +---------------------------+------+------+-------------+
*  10
*
*** LCRBK - Locate Record Parameter
 
 
  LCRBK Cross Reference Top of page
 
 
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 7.3.0 Last updated on 22 Jun 2022 at 15:50:28 EDT.
Copyright IBM Corporation, 1990, 2022