DVLHEAD Back to Index page
 
Prolog 
Control Block Contents 
   DVLHEAD DSECT
   DVLRANGE 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.

 
  DVLHEAD Control Block Content Top of page
 

 DVLHEAD DSECT Top of page
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure DVLHEAD Device List Structures 0000 0 Address 4 DVLHFRST First DVLRANGE 0004 4 Address 4 DVLHSOFR DVLRANGE where GD left off 0008 8 Address 4 DVLHLAST Last DVLRANGE 000C 12 Signed 4 DVLHMXNM Maximum OK number 0010 16 Address 4 DVLHADBM Address of Already Done Bit Map 00000003 DVLHSIZE (*-DVLHEAD+7)/8 Head of list size in DWORDS OBJECT - DVLRANGE Map a single range (see HCPDVL ASSEMBLE).
 DVLRANGE DSECT Top of page
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure DVLRANGE Device List Structures 0000 0 Address 4 DVLRNEXT Next DVLRANGE in list 0004 4 Signed 4 DVLRFRST First number in range 0008 8 Signed 4 DVLRSOFR Number where GD left off 000C 12 Signed 4 DVLRLST Last number in range 0010 16 Signed 4 DVLRCNT Count of numbers in range 0014 20 Signed 4 DVLRESET 0 ==> not processed yet 00000003 DVLRSIZE (*-DVLRANGE+7)/8 Device range block DWORD size
 
 
  DVLHEAD Storage Layout Top of page
 
          
*** DVLHEAD - Device List Structures
*
*     +---------------------------+---------------------------+
*   0 |         DVLHFRST          |         DVLHSOFR          |
*     +---------------------------+---------------------------+
*   8 |         DVLHLAST          |         DVLHMXNM          |
*     +---------------------------+---------------------------+
*  10 |         DVLHADBM          | 14
*     +---------------------------+
*
*** DVLHEAD - Device List Structures
          
*** DVLRANGE - Device List Structures
*
*     +---------------------------+---------------------------+
*   0 |         DVLRNEXT          |         DVLRFRST          |
*     +---------------------------+---------------------------+
*   8 |         DVLRSOFR          |         DVLRLST           |
*     +---------------------------+---------------------------+
*  10 |         DVLRCNT           |         DVLRESET          |
*     +---------------------------+---------------------------+
*  18
*
*** DVLRANGE - Device List Structures
 
 
  DVLHEAD Cross Reference Top of page
 
 
Symbol         Dspl Value
-------------- ---- -----
DVLHADBM       0010
DVLHFRST       0000
DVLHLAST       0008
DVLHMXNM       000C
DVLHSIZE       0010 00000003
DVLHSOFR       0004
DVLRCNT        0010
DVLRESET       0014
DVLRFRST       0004
DVLRLST        000C
DVLRNEXT       0000
DVLRSIZE       0014 00000003
DVLRSOFR       0008
 
This information is based on z/VM 7.3.0 Last updated on 22 Jun 2022 at 15:50:03 EDT.
Copyright IBM Corporation, 1990, 2022