DRBLK

Prolog  

Control Block Contents  
   DRBLK DSECT

Storage Layout  

Cross Reference (Contains links to field and bit definitions)  

DRBLK Control Block Content

DRBLK DSECT

Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      DRBLK          NETWORK DIAGNOSE x'2A8' Request Blocks
0000    0 Bitstring    1 DRBFLAG        Processing Flag
          .... ...1      DRBMCAST       X'01' DRBMCAST Indicates a
                                        Multicast Frame
          .... ..1.      DRBBCAST       X'02' DRBBCAST Indicates a
                                        Broadcast Frame
          .... .1..      DRBUCAST       X'04' DRBUCAST Indicates a
                                        Unicast Frame
          .... .111      DRBVFLAG       DRBMCAST+DRBBCAST+DRBUCAST
                                        DRBVFLAG
0001    1 Bitstring    1 DRBKEY         Storage key for Datagram
0002    2 Bitstring    4 *              Reserved for future IBM Use
0006    6 Signed       2 DRBCOUNT       Size of Datagram in bytes
0008    8 Dbl-Word     8 DRBADDR        G:ADR of Datagram (payload)
0010   16 Bitstring    1 DRB$END (0)    The end
      DG4BK Operation Code x'04' Multicast MAC ADR Registration

DRBLK Storage Layout

          
*** DRBLK - NETWORK DIAGNOSE x'2A8' Request Blocks
*
*     +------+------+---------------------------+-------------+
*   0 |:FLAG |DRBKEY|///////////////////////////|  DRBCOUNT   |
*     +------+------+---------------------------+-------------+
*   8 |                       DRBADDR                         |
*     +-------------------------------------------------------+
*
*** DRBLK - NETWORK DIAGNOSE x'2A8' Request Blocks

DRBLK Cross Reference

Symbol         Dspl Value
-------------- ---- -----
DRB$END        0010
DRBADDR        0008
DRBBCAST       0000 02
DRBCOUNT       0006
DRBFLAG        0000
DRBKEY         0001
DRBMCAST       0000 01
DRBUCAST       0000 04
DRBVFLAG       0000 07