Inquiry
96122 • Revision: F Chapter 6 SCSI Commands 93
Standard Inquiry Data Definition
For the Inquiry command, the library returns 24h (36d) bytes of data in this format.
TABLE 6-9 Standard Inquiry Data
Byte
Bit
7654321 0
0 Peripheral Qualifier Peripheral Device Type
1 RMB (1) Reserved (0)
2 Version (05h)
3 Reserved (0) Norm
ACA (0)
HiSup
(1)
Response Data Format
(2)
4 Additional Length (n-4)
5 SCCS (0) ACC (0) TPGS (0) 3PC (0) Reserved Protect (0)
6BQue (0)EncServ
(0)
VS
(0)
MultiP
(0)
MChngr
(0)
Reserved
(0)
ADDR16
a
(1)
7 Rsvd (0) Rsvd (0) WBUS16
a
SYNC
a
LINKED
(0)
Rsvd (0) CmdQue
(0)
SftRe
(0)
8
to
15
(MSB)
Vendor Identification
(LSB)
16
to
31
(MSB)
Product Identification
(LSB)
32
to
35
(MSB)
Product Revision Level
(LSB)
Note –
a
The meaning of these fields are specific to the SCSI Parallel Interface (SPI-5).
For protocols other than the SCSI Parallel Interface (such as Fibre Channel), these fields are reserved.
Standard Inquiry Data Definitions:
Peripheral Qualifier The library returns a value of 000b indicating the specified peripheral device
type is currently connected to this logical unit. If the command is sent to an
unsupported logical unit, the value returned is 011b. (b = binary notation)
Peripheral Device Type The library returns a value of 8h, which indicates that the library is a medium
changer device. If the command is sent to an unsupported logical unit, the
value returned is 1Fh.
RMB Removable Medium; a value of 1 indicates the medium is removable.
Ver sion The library returns a value of 5h, which indicates compliance to SCSI-3
NormACA The Normal Auto Contingent Allegiance (NACA) bit controls the rules for
handling an auto contingent condition caused by a command.
The library returns a value of 0, indicating it does not support setting the
NACA bit to one in the control byte of a CDB.
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