CASBK Back to Index page
 
Prolog 
Control Block Contents 
   CASBK 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.


  CASBK Prolog Top of page
  
 NAME       : HCPVEXBK
 DESCRIPTION: Map Contiguous Available Slots
 DSECT      : CASBK
 NOTES      :
              The following describes a CASBK - group of contiguous
              available slots in the current extent.  They are
              located in VEXSPACA or VEXPGACA.
 
 
  CASBK Control Block Content Top of page
  




 CASBK DSECT
Top of page


Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      CASBK          Map Contiguous Available Slots
0000    0 Bitstring    1 CASLEN         Number of slots
0001    1 Bitstring    1 CASNXT         Pointer to next CASBK
0002    2 Signed       2 CASLOC         Starting slot
          00000004       CASSZ          (*-CASBK) Size of one CASBK
          00000010       CASNUM         16 Number of CASBKs in VEXSPACA
                                        or VEXPGACA.
 
 
  CASBK Storage Layout Top of page
  
          
*** CASBK - Map Contiguous Available Slots
*
*     +------+------+-------------+
*   0 |CASLEN|CASNXT|   CASLOC    | 4
*     +------+------+-------------+
*
*** CASBK - Map Contiguous Available Slots
 
 
  CASBK Cross Reference Top of page
  
 
Symbol         Dspl Value
-------------- ---- -----
CASLEN         0000
CASLOC         0002
CASNUM         0002 00000010
CASNXT         0001
CASSZ          0002 00000004
 
This information is based on z/VM 6.3.0 Last updated on 22 May 2013 at 13:56:19 EDT.
Copyright IBM Corporation, 1990, 2013