STPBK

Prolog  

Control Block Contents  
   STPBK DSECT

Storage Layout  

Cross Reference (Contains links to field and bit definitions)  

STPBK Prolog

 NAME       : SHARED TAPE DRIVE CONTROL BLOCK
 DESCRIPTION: SHARED-TAPE CONTROL BLOCK
 DSECT      : STPBK
 FUNCTION   : THIS CONTROL BLOCK MAPS SHARED TAPE DRIVE
              INFORMATION WHEN MULTIUSER IS SPECIFIED ON
              THE ATTACH CMD OR DEDICATE DIRECTORY STATEMENT.
 LOCATED BY : RDEVSTAP   SHARED TAPE BLOCK
 CREATED BY : HCPATDEV
 DELETED BY : HCPDTDEV

STPBK Control Block Content

STPBK DSECT

Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      STPBK          SHARED-TAPE CONTROL BLOCK
     ** FIELDS FOR ATTACH / DETACH
0000    0 Bitstring   80 *              RESERVED FOR FUTURE IBM USE
0050   80 Signed       4 STPVDEV        USERS VDEV
          0000000B       STPDWSIZ       ((*-STPBK+7)/8) SIZE IN DWS FOR
                                        FREE/FRET

STPBK Storage Layout

          
*** STPBK - SHARED-TAPE CONTROL BLOCK
*
*     +-------------------------------------------------------+
*   0 |///////////////////////////////////////////////////////|
*     =///////////////////////////////////////////////////////=
*     |///////////////////////////////////////////////////////|
*     +---------------------------+---------------------------+
*  50 |         STPVDEV           | 54
*     +---------------------------+
*
*** STPBK - SHARED-TAPE CONTROL BLOCK

STPBK Cross Reference

Symbol         Dspl Value
-------------- ---- -----
STPDWSIZ       0050 0000000B
STPVDEV        0050