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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.
Summary of Contents for Quantum Atlas 10K II 9.2/18.4/36.7/73.4 GB
Page 15: ...Contents Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives xv...
Page 19: ...Contents Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives xix...
Page 25: ...About This Manual 1 4 Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives...
Page 55: ...Installation 3 28 Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives...
Page 69: ...SCSI Description 5 2 Quantum Atlas 10K II Ultra160 m SCSI Hard Disk Drives...
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Page 315: ...Feature Descriptions 6 14 Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives...
Page 321: ...Appendix A Quick Reference A 6 Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives...
Page 363: ...Appendix B SCSI Bus Signal Timing B 42 Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives...
Page 369: ...Index I 4 Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives...
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