BBOXADR
Prolog  
Control Block Contents  
   BBOXADR DSECT
Storage Layout  
Cross Reference (Contains links to field and bit definitions)  

BBOXADR Prolog
 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

BBOXADR DSECT
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
          00000001       BBOPOOL        1 FOR BBOPTDOS AND BBOVSDOPS
          00000018       BBOXSIZE       (*-PBEGIN) SIZE OF BBOX
 

 
 
 BBOXADR Storage Layout
*** BBOXADR - Boundary Box Addresses
*
*     +---------------------------+--------------------+------+
*   0 |          PBEGIN           |////////////////////|:PTDOS|
*     +--------------------+------+--------------------+------+
*   8 |////////////////////|:VSDOS|         PFIXLMT           |
*     +--------------------+------+---------------------------+
*  10 |         PFIXCNT           |         BBOPARTN          |
*     +---------------------------+---------------------------+
*  18
*
*** BBOXADR - Boundary Box Addresses
 

 
 
 BBOXADR Cross Reference
 (contains links to field and bit definitions)
Symbol         Dspl Value
-------------- ---- -----
BBOPARTN       0014
BBOPOOL        0014 00000001
BBOPTDOS       0007
BBOVSDOS       000B
BBOXSIZE       0014 00000018
PBEGIN         0000
PENDLOG        0004
PFIXCNT        0010
PFIXLMT        000C
PGEND          0008
 



This information is
based on VM/ESA 2.4.0.
Last updated on 12 Aug 1999 at 11:17:23 EDT.

Copyright IBM Corporation, 1990, 1999