
Chapter 3 Media Changer Commands
Set Device Identifier Command (A4h)
Quantum ATL SuperLoader Software Interface Guide 169
Table 69 Set Device
Identifier Command
Descriptor Block
The SET DEVICE IDENTIFIER parameter list contains the
identifier to be set by the addressed logical unit.
Figure 88 Set Device
Identifier Parameter
List
Table 70 Set Device
Identifier Parameter
List
Field Description
Service
Action
Must be 06h. Any other value will return Check
Condition, Illegal request.
Parameter
List Length
Specifies the length in bytes of the Identifier that shall
be transferred from the application client to the device
server. The maximum value for this field shall be 64
bytes. A parameter list length of zero indicates that no
data shall be transferred, and that subsequent
REPORT DEVICE IDENTIFIER commands shall
return an Identifier length of zero. If the parameter list
length exceeds 64 bytes, then the drive will return
CHECK CONDITION status with the sense key set to
ILLEGAL REQUEST and an additional sense code of
INVALID FIELD IN CDB.
Bit
Byte76543210
0 - n
Identifier
Field Description
Identifier Data to be returned by all subsequent REPORT
DEVICE IDENTIFIER commands, until replaced by
another valid SET DEVICE IDENTIFIER command.
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