Inquiry Command - Seagate STT20000A Product Manual

ATAPI Interface

Inquiry command

Bit 7
Byte
0
1
2
3
4-7
8-15
16-31
Byte Description
0 Peripheral Device Type
1
Removable Media Bit (RMB)
2
ISO/ECMA/ANSI Version
3 Response Data Format
4 Additional Length
5-7 Reserved
8-15 Vendor ID (8 ASCII characters)
16-31 Product ID (16 ASCII characters)
32-35
Product Revision (4 ASCII characters)
STT20000A Product Manual
6 5
Vendor ID (8 ASCII characters) ASCII "Seagate "
Product ID (16 ASCII characters ASCII "STT20000A
The INQUIRY command is always accepted, regardless of the state of the DSC bit.
The command does not modify the status of DSC. The INQUIRY command returns
the lesser of 36 bytes or the Allocation Length parameter of information. The
following table defines the returned values.
Note: Much of the information returned by this command is redundant with the
ATAPI Identify Device command response.
The INQUIRY command is not to be used by the low-level driver; rather, it is
intended to be used by applications, which usually have access to the drive only
through the ATAPI protocol.
4 3
Operation code (12h)
Reserved
Reserved
Reserved
Allocation Length
Value
01h
80h
02h
02h
32.
00h
ASCII
ASCII
ASCII
Chapter 5
2 1
"
Meaning
Streaming Tape Drive (QIC-
121 Architectural Model)
Removable
ANSI=02
This Format
36 total bytes
—
"Seagate "
"STT20000A "
"N.NN"
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