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User’s Guide 21020285 D
Chapter 6 Target Mode Pass-through Commands
Target Mode Response Command Status Block Page 6 - 19
Target Mode
Response
Command
Status Block
In Chapter 4, a Base Status Block was introduced and explained in general
terms. The Status Block for a Target Mode Response command uses some of
the same fields, and modifies others. A Target Mode Response command status
block is differentiated from other status blocks by the TMS bit in the Flags
field, and also by the Status Information it contains.
Status Block
Format
The format of the Target Mode Response command Status Block is as follows:
A SCSI Command Descriptor Block (CDB) being returned to the Host may
have more than six bytes. In that case, a second status block is required to
contain the remaining CDB bytes. Its format is as follows:
Description of
Fields
A description of each field in the Status Blocks is provided next.
Command Identifier
This value links a Status Block with a Parameter Block.
Address
Offset
Byte Memory Address
Offset + 0 Offset + 1 Offset + 2 Offset + 3
00H Command Identifier
04H Cmd Status Flag Reserved Error Flags
08H Msg Byte RCD CDB Length CDB Byte 0 CDB Byte 1
0CH CBD Byte 2 CDB Byte 3 CDB Byte 4 CDB Byte5
Table 52: First TM Response Command Status Block
Address
Offset
Byte Memory Address
Offset + 0 Offset + 1 Offset + 2 Offset + 3
00H Command Identifier
04H Reserved Error Flags
08H CBD Byte 6 CBD Byte 7 CDB Byte 8 CDB Byte 9
0CH CBD Byte 10 CDB Byte 11 Reserved
Table 53: Second TM Response Command Status Block