DTCBK

Prolog  

Control Block Contents  
   DTCBK DSECT

Storage Layout  

Cross Reference (Contains links to field and bit definitions)  

DTCBK Prolog

 Name       : HCPDTCBK
 Description: Detach Command Control Block
 DSECT      : DTCBK
 Function   : Contains parameters used by the Detach command
 Created by : HCPDTCMD
 Deleted by : HCPDTCMD, HCPDTRDV, HCPDTLDV, HCPDTVDV

DTCBK Control Block Content

DTCBK DSECT

Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      DTCBK          Detach Command Control Block
0000    0 Address      4 DTCNEXT        Address of the next DTCBK
0004    4 Bitstring    4 DTCDEVS (0)    Device range
0004    4 Signed       2 DTCDEV1        Beginning device number
0006    6 Signed       2 DTCDEV2        Ending device number
0008    8 Bitstring    1 DTCRFLAG       Flags for detach processing
          1... ....      DTCRLOGD       X'80' Logical device request
          .1.. ....      DTCLEAVE       X'40' LEAVE option was specified
          ..1. ....      DTCUNLOD       X'20' UNLOAD option was specified
          ...1 ....      DTCCANCL       X'10' Cancel any more detach
                                        requests
          00000002       DTCSIZE        (*-DTCBK+7)/8 Size in doublewords

DTCBK Storage Layout

          
*** DTCBK - Detach Command Control Block
*
*     +---------------------------+-------------+-------------+
*   0 |         DTCNEXT           |  DTCDEV1    |  DTCDEV2    |
*     +------+--------------------+-------------+-------------+
*   8 |:RFLAG| 9
*     +------+
*
*** DTCBK - Detach Command Control Block

DTCBK Cross Reference

Symbol         Dspl Value
-------------- ---- -----
DTCCANCL       0008 10
DTCDEVS        0004
DTCDEV1        0004
DTCDEV2        0006
DTCLEAVE       0008 40
DTCNEXT        0000
DTCRFLAG       0008
DTCRLOGD       0008 80
DTCSIZE        0008 00000002
DTCUNLOD       0008 20