LDCBK Back to Index page
 
Prolog 
Control Block Contents 
   LDCBK 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.


  LDCBK Prolog Top of page
  
 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).
 RELOCATION CONSIDERATIONS : None
 
 
  LDCBK Control Block Content Top of page
  




 LDCBK DSECT
Top of page


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 Top of page
  
          
*** 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 Top of page
  
 
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 7.3.0 Last updated on 22 Jun 2022 at 15:52:00 EDT.
Copyright IBM Corporation, 1990, 2022