DVLHEAD

Prolog  

Control Block Contents  
   DVLHEAD DSECT
   DVLRANGE DSECT

Storage Layout  

Cross Reference (Contains links to field and bit definitions)  

DVLHEAD Control Block Content

DVLHEAD DSECT

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

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

          
*** 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

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