ACCBK

Prolog  

Control Block Contents  
   ACCBK DSECT

Storage Layout  

Cross Reference (Contains links to field and bit definitions)  

ACCBK Prolog

 NAME       : HCPACCBK
 DESCRIPTION: Initial file system access block
 DSECT      : ACCBK
 FUNCTION   : The ACCBK contains information that
              describes what the CP file system's initial
              access order should look like.
 CREATED BY : HCPZPQ
 DELETED BY : HCPZIACI
 RELOCATION CONSIDERATIONS : None

ACCBK Control Block Content

ACCBK DSECT

Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      ACCBK          Initial file system access block
0000    0 Signed       2 ACCBKNUM       Maximum number of slots
0002    2 Signed       2 *              Reserved for future IBM use
0004    4 Signed       4 *              Reserved for future IBM use
0008    8 Bitstring    1 ACCBKV (0)     Start of variable length data
0008    8 Character    8 ACCUSRID       Userid for minidisk
0010   16 Signed       2 ACCVDEV        Virtual address of minidisk
0012   18 Bitstring    1 ACCOPTS        Options used with linking
          .1.. ....      ACCBNLNK       X'40' ACCBNLNK Do a DEFINE MDISK
          ..1. ....      ACCBNCAC       X'20' ACCBNCAC Don't do cache
0013   19 Bitstring    1 ACCMODE        Access mode to use (same as
                                        DDEVMODE)
          0000000C       ACCELEN        *-ACCUSRID Length of variable
                                        portion
0008    8 Bitstring  312 ACCSTMTS       Space for this many
          00000028       ACCSIZED       (*-ACCBK+7)/8 Length of area in
                                        d-words

ACCBK Storage Layout

          
*** ACCBK - Initial file system access block
*
*     +-------------+-------------+---------------------------+
*   0 |  ACCBKNUM   |/////////////|///////////////////////////|
*     +-------------+-------------+---------------------------+
*   8 |///////////////////////////////////////////////////////|
*     =///////////////////////////////////////////////////////=
*     |///////////////////////////////////////////////////////|
*     +-------------------------------------------------------+
*
*** ACCBK - Initial file system access block
          
*** Overlay for ACCBKV in ACCBK
*
*     +-------------------------------------------------------+
*   8 |                       ACCUSRID                        |
*     +-------------+------+------+---------------------------+
*  10 |  ACCVDEV    |:OPTS |:MODE | 14
*     +-------------+------+------+
*
*** Overlay for ACCBKV in ACCBK
          
*** Overlay for ACCBKV in ACCBK
*
*     +-------------------------------------------------------+
*   8 |                                                       |
*     =                       ACCSTMTS                        =
*     |                                                       |
*     +-------------------------------------------------------+
* 140
*
*** Overlay for ACCBKV in ACCBK

ACCBK Cross Reference

Symbol         Dspl Value
-------------- ---- -----
ACCBKNUM       0000
ACCBKV         0008
ACCBNCAC       0012 20
ACCBNLNK       0012 40
ACCELEN        0013 0000000C
ACCMODE        0013
ACCOPTS        0012
ACCSIZED       0008 00000028
ACCSTMTS       0008
ACCUSRID       0008
ACCVDEV        0010