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Chapter 7 SCSI Interface
Number of Bytes to Ignore: Indicates the number of invalid bytes in the data
transfer. Only 01h (DB15-8) is supported.
80-C0h: IDENTIFY
The IDENTIFY message is returned to connect the host and the autoloader
logical unit.
Table 7.2.1.12 : IDENTIFY Message Format
When the IDENTIFY bit is 1, this message is an IDENTIFY message.
When the DISCPRIV bit is 1, the host authorizes the autoloader to
DISCONNECT. When the bit is 0, the autoloader is prevented from performing
DISCONNECT.
7.3. Status
00h: GOOD
This status indicates that the autoloader has completed a command correctly.
02h: CHECK CONDITION
This status indicates that an error, exception processing, or fault condition
occurred. By issuing the REQUEST SENSE command, the cause of the error or
other problem can be determined.
08h: BUSY
This status indicates that the autoloader is in the BUSY state.
However, when an INQUIRY command is issued, the autoloader returns a
GOOD status even if the autoloader is in the BUSY state.
18h: RESERVATION CONFLICT
This status is reported by the autoloader when it is reserved by the RESERVE
UNIT command and accessed by another host.
This status is issued with the following commands.
Initialize Element Status
Move Medium
Position to Element
Read Element Status
Request Volume Element Address
Reserve
Send Volume
Bit
Byte
7
6
5
4
3
2
1
0
0
IDENTIFY DISCPRIV
LUN
