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DLT1/VS80 SCSI Interface Guide
81-81276-01 Rev A01
July 2004
3-5
3.2.6 IDENTIFY (80h–FFh)
The initiator or target sends these messages to establish (or reestablish) the physical connection path
between an initiator and target for a particular logical unit.
Table 3-3
lists the bits in the message byte.
When a target sends the IDENTIFY message to an initiator during reconnection, a RESTORE
POINTERS message is implied.
3.2.7 IGNORE WIDE RESIDUE (23h)
The target sends the IGNORE WIDE RESIDUE message to indicate that the number of valid bytes
sent during the last REQ/ACK handshake and REQB/ACKB handshake of a DATA IN phase is less
than the negotiated transfer width. The ignore field indicates the number of invalid data bytes
transferred. The target sends this message immediately following the DATA IN phase and before any
other messages.
Figure 3-2
shows the message format.
Figure 3-2.
IGNORE WIDE RESIDUE Format (23h)
Table 3-3.
Bits in the IDENTIFY Message
Bit
Description
7
Always set to 1.
6
Set by initiator if target is allowed to disconnect/reconnect.
5
Must be 0 (“Target Routines” not supported).
4
Reserved. Must be 0.
3
Reserved. Must be 0.
2 – 0
Logical Unit Number (LUN)
Bit
Byte
7
6
5
4
3
2
1
0
0
Message code (23h)
1
Ignore (01h)
Summary of Contents for DLT1/VS80 SCSI
Page 1: ...DLT1 VS80 SCSI Interface Guide...
Page 6: ...DLT1 VS80 SCSI Interface Guide vi July 2004 81 81276 01 Rev A01 Notes...
Page 12: ...Table of Contents xii July 2004 81 81276 01 Rev A01 Notes...
Page 16: ...List of Figures xiv July 2004 81 81276 01 Rev A01 Notes...
Page 20: ...List of Tables xviii July 2004 81 81276 01 Rev A01 Notes...
Page 24: ...Chapter 1 Introduction 1 4 July 2004 81 81276 01 Rev A01 Notes...
Page 32: ...Chapter 2 General SCSI Bus Operation 2 8 July 2004 81 81276 01 Rev A01 Notes...
Page 42: ...Chapter 3 SCSI Messages 3 10 July 2004 81 81276 01 Rev A01 Notes...
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