
Chapter 3 Media Changer Commands
Report Device Identifier Command (A3h)
146 Quantum ATL SuperLoader Software Interface Guide
Table 61 Report
Device Identifier
Command Descriptor
Block
The REPORT DEVICE IDENTIFIER parameter list contains a four-
byte field that contains the length in bytes of the parameter list and
the logical unit's identifier.
Figure 76 Report
Device Identifier
Field Description
Service
Action
Must be 05h. Any other value will return Check
Condition, Illegal request.
Allocation
Length
If the Allocation Length is not sufficient to contain all the
parameter data, the first portion of the data shall be
returned. This shall not be considered an error. The
actual length of the parameter data is available in the
Identifier Length field in the parameter data. If the
remainder of the parameter data is required, the
application client should send a new REPORT DEVICE
IDENTIFIER command with an Allocation Length field
large enough to contain all the data.
Bit
Byte7654 3210
0 - 3
(MSB)
Identifier Length (n – 4)
(LSB)
4 - n
Identifier
Commentaires sur ces manuels