Barracuda 1 and 2 Product Manual, Rev. C
53
11.0
Interface requirements
This section describes the Barracuda 1 and 2 interface requirements.
11.1
General description
This section contains drive-specific interface information. The major portion
of the interface requirements/implementation is described in the
SCSI-2
Interface Product Manual (part number 77738479).
11.2
SCSI interface messages supported
Table 3 lists the messages supported by the Barracuda SCSI-1 and
SCSI-2 modes.
Table 3. SCSI messages supported
Msg
Supported by
Message name
code
SCSI-1
SCSI-2
Abort
06h
Y
Y
Abort tag
0Dh
Y
Y
Bus device reset
0Ch
Y
Y
Clear queue
0Eh
N
Y
Command complete
00h
Y
Y
Continue I/O Process
12h
N
N
Disconnect
04h
Y
Y
Extended messages
01h***
Y
Y
Identify
80h-FFh
Y
Y
Ignore wide residue (two bytes)
23h
N
N
Initiate recovery
0Fh
N
N
Initiator detected error
05h
Y
Y
Linked command complete
0Ah
Y
Y
Linked command complete with flag
0Bh
Y
Y
Message parity error
09h
Y
Y
Message reject
07h
Y
Y
Modify data pointer
***
N
N
No operation
08h
Y
Y
Queue tag messages (two bytes)
Head of queue tag
21h
N
Y
Ordered queue tag
22h
N
Y
Simple queue tag
20h
N
Y
Release recovery
10h
N
N
Restore pointers
03h
Y
Y
Save data pointer
02h
Y
Y
Synchronous data transfer request
***
Y
Y
Target transfer disable
13h
N
N
Terminate I/O process
11h
N
N
Wide data transfer request
***
N
Y
*** Extended messages (see the
SCSI-2 Interface Product Manual)
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