MDAS Back to Index page
 
Prolog 
Control Block Contents 
   MDAS 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.


  MDAS Prolog Top of page
  
 NAME       : HCPTCMBK
 DESCRIPTION: Map MDC addr spaces represented in the TCMBK
 DSECT      : MDAS
 NOTES      : Serialized by TCMPTELK when adding new address spaces.
 
 
  MDAS Control Block Content Top of page
  




 MDAS DSECT
Top of page


Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      MDAS           Map MDC addr spaces represented in the TCMBK
0000    0 Signed       4 MDALET         ALET for address space
0004    4 Signed       4 MDASTO         Segment table origin
          00000008       MDASIZE        *-MDAS Size of address space
                                        fields
          00000003       MDASZSHF       3 Use this in a SRL instruction
                                        to "divide" by MDASIZE or SLL to
                                        "multiply"
 
 
  MDAS Storage Layout Top of page
  
          
*** MDAS - Map MDC addr spaces represented in the TCMBK
*
*     +---------------------------+---------------------------+
*   0 |          MDALET           |          MDASTO           |
*     +---------------------------+---------------------------+
*   8
*
*** MDAS - Map MDC addr spaces represented in the TCMBK
 
 
  MDAS Cross Reference Top of page
  
 
Symbol         Dspl Value
-------------- ---- -----
MDALET         0000
MDASIZE        0004 00000008
MDASTO         0004
MDASZSHF       0004 00000003
 
This information is based on z/VM 7.3.0 Last updated on 22 Jun 2022 at 15:57:00 EDT.
Copyright IBM Corporation, 1990, 2022