BBOXADR Back to Index page
 
Prolog 
Control Block Contents 
   BBOXADR 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.


  BBOXADR Prolog Top of page
  
 NAME       : BBOX
 DESCRIPTION: Boundary Box Addresses
 DSECT      : BBOXADR
 FUNCTION   : BBOX contains the beginning addresses of the
              VSE partitions when CMS/DOS is active; one for
              each entry. BBOXADR is called by the BBOX
              macro.
 
 
  BBOXADR Control Block Content Top of page
  




 BBOXADR DSECT
Top of page


Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      BBOXADR        Boundary Box Addresses
0000    0 Bitstring    4 PBEGIN         PARTN START ADDR
0004    4 Signed       4 PENDLOG (0)    PARTN LOGICAL END
0004    4 Bitstring    3 *
0007    7 Bitstring    1 BBOPTDOS       PARTITION SUBPOOL EXISTS
0008    8 Signed       4 PGEND (0)      GETVIS AREA END
0008    8 Bitstring    3 *
000B   11 Bitstring    1 BBOVSDOS       GETVIS SUBPOOL EXISTS
000C   12 Bitstring    4 PFIXLMT        PFIX LIMIT ZERO FOR CMS
0010   16 Bitstring    4 PFIXCNT        PFIX COUNT ZERO FOR CMS
0014   20 Bitstring    4 BBOPARTN       DOS PARTITION START ADDRESS
          .... ...1      BBOPOOL        1 BBOPOOL FOR BBOPTDOS AND
                                        BBOVSDOPS
          00000018       BBOXSIZE       (*-PBEGIN) SIZE OF BBOX
 
 
  BBOXADR Storage Layout Top of page
  
          
*** BBOXADR - Boundary Box Addresses
*
*     +---------------------------+--------------------+------+
*   0 |          PBEGIN           |////////////////////|:PTDOS|
*     +--------------------+------+--------------------+------+
*   8 |////////////////////|:VSDOS|         PFIXLMT           |
*     +--------------------+------+---------------------------+
*  10 |         PFIXCNT           |         BBOPARTN          |
*     +---------------------------+---------------------------+
*  18
*
*** BBOXADR - Boundary Box Addresses
 
 
  BBOXADR Cross Reference Top of page
  
 
Symbol         Dspl Value
-------------- ---- -----
BBOPARTN       0014
BBOPOOL        0014 01
BBOPTDOS       0007
BBOVSDOS       000B
BBOXSIZE       0014 00000018
PBEGIN         0000
PENDLOG        0004
PFIXCNT        0010
PFIXLMT        000C
PGEND          0008
 
This information is based on z/VM 7.2.0 Last updated on 24 Jun 2020 at 09:36:08 EDT.
Copyright IBM Corporation, 1990, 2020