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 6.4.0.
Last updated on 24 Aug 2016 at 09:20:56 EDT.
Copyright IBM Corporation, 1990, 2016