Appendix A. Supported messages
A.1 Single-byte messages
The implemented single-byte messages are listed below.
Code
Message name
Direction
Must
negate ATN
before last
ACK?
06
H
Abort
O
Yes
0D
H
Abort tag
O
Yes
0C
H
Bus device reset
O
Yes
0E
H
Clear queue
O
Yes
00
H
Command complete
I
—
04
H
Disconnect
I
—
80
H
Identify
I/O
No
23
H
Ignore wide residue
I
—
0F
H
Initiate recovery
I/O
Yes
05
H
Initiator detected error
O
Yes
0A
H
Linked command complete
I
—
0B
H
Linked command complete
(with flag)
I
—
09
H
Message parity error
O
Yes
07
H
Message reject
I/O
Yes
08
H
No operation
O
Yes
21
H
Head of queue tag
O
No
22
H
Ordered queue tag
O
No
20
H
Simple queue tag
O
No
10
H
Release recovery
O
Yes
03
H
Restore pointers
I
—
02
H
Save data pointer
I
—
11
H
Terminate I/O process
O
Yes
ST3655 Family SCSI Drives Product Manual, Rev. A
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