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Chapter 2 Messages
Supported SCSI Messages
Quantum ATL SuperLoader Software Interface Guide
15
Table 4 Response to
Disconnect Message
Identify (80h-FFh)
2
The IDENTIFY message is sent by either the initiator or the
SuperLoader to establish or re-establish the physical connection
path between an initiator and target for a particular logical unit
under the conditions listed below.
shows the format of the
IDENTIFY message and
describes the data field contents.
Figure 2 Identify
Message
BUS Phase
SuperLoader Response
SELECTION
The SuperLoader discards the DISCONNECT message and goes to BUS
FREE.
COMMAND
The SuperLoader discards the DISCONNECT message and goes to BUS
FREE. The ATTENTION request is ignored while the Command Descriptor
Block is fetched. The SuperLoader does not switch to MESSAGE OUT until
the current DMA completes.
DATA
The ATTENTION request is ignored while the current data transfer
completes; that is, the SuperLoader does not switch to MESSAGE OUT
until after the current DMA completes. The SuperLoader returns a
MESSAGE REJECT message and responds with CHECK CONDITION
status, indicating the command aborted because of an invalid message.
STATUS
The SuperLoader sends a MESSAGE REJECT message, then sends
COMMAND COMPLETE.
MESSAGE IN
The SuperLoader sends a MESSAGE REJECT message and switches to the
BUS FREE phase.
Bit
7
6
5
4
3
2
1
0
Identify
DiscPriv
LUNTAR
Reserved
LUNTRN
Summary of Contents for SuperLoader DLT
Page 1: ...ATL SuperLoader DLT and ATL SuperLoader LTO Software Interface Guide 81 60220 01 A02...
Page 18: ...Preface Document Conventions xviii Quantum ATL SuperLoader Software Interface Guide...
Page 44: ...Chapter 2 Messages Supported SCSI Messages 26 Quantum ATL SuperLoader Software Interface Guide...
Page 196: ...Index 178 Quantum ATL SuperLoader Software Interface Guide...