Maxtor ATLAS 10K III Manual Page 347

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Appendix B. SCSI Bus Signal Timing
B–26 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives
Table B–11 Supported SCSI Messages
Message Message Code Direction
1
ABORT TASK
2
(ABORT TAG) 0Dh Out
ABORT TASK SET
2
(ABORT) 06h Out
CLEAR TASK SET
2
(CLEAR QUEUE) 0Eh Out
CONTINUE TASK
2
(CONTINUE I/O PROCESS) 12h Out
DISCONNECT 04h In Out
IDENTIFY 80h – FFh In Out
IGNORE WIDE RESIDUE
3
23h In
INITIATE RECOVERY 0Fh In
INITIATOR DETECTED ERROR 05h Out
LINKED COMMAND COMPLETE 0Ah In
LINKED COMMAND COMPLETE (with flag) 0Bh In
MESSAGE PARITY ERROR 09h Out
MESSAGE REJECT 07h In Out
NO OPERATION 08h Out
Queue Tag Messages (two bytes)
3
HEAD OF QUEUE TAG 21h Out
ORDERED QUEUE TAG 22h Out
SIMPLE
2
(SIMPLE QUEUE TAG) 20h In Out
RELEASE RECOVERY 10h Out
SAVE DATA POINTER 02h In
SYNCHRONOUS DATA TRANSFER 01h In Out
REQUEST
4
TARGET RESET
2
(BUS DEVICE RESET) 0Ch Out
TARGET TRANSFER DISABLE 13h Out
TASK COMPLETE
2
(COMMAND COMPLETE) 00h In
WIDE DATA TRANSFER REQUEST
2
03h In Out
PARALLEL PROTOCOL REQUEST
4
04h In Out
Notes:
1
In = target to initiator; Out = initiator to target (drive).
2
SCSI-3 terminology (SCSI-2 term in parentheses).
3
Multibyte message.
4
Extended messages (see Figure B-1).
Two-byte messages consist of two consecutive bytes. The value of the first byte, as
defined in Table B-10, determines which message is to be transmitted. The second
byte is a parameter byte that is used as defined in the message description.
A value of 01h in the first byte indicates the beginning of a multiple-byte extended
message. The extended message format is shown in Figure B-1 and the data fields
are described in Table B-12.
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