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Table 72: Identify device information. (Part 1 of 7)
Word
Content
00
045AH
01
(Note 1)
02
xxxxH
03
(Note 1)
04-05
0
06
003FH
07-09
0
10-19
XXXX
20
0003H
21
(Note 1)
22
00XXH
23-26
XXXX
27-46
(Note 1)
47
8010H
* indicates the use of those parameters that are vendor specific.
Note 1. See Table 79: "Number of cylinders/heads/sectors by model." on page 118.
drive classi-
bit assignments
fication
15(=0)
1=ATAPI device, 0=ATA device
*
14(=0)
1=format speed tolerance gap required
*
13(=0)
1=track offset option available
*
12(=0)
1=data strobe offset option available
*
11(=0)
1=rotational speed tolerance > 0.5%
*
10(=1)
1=disk transfer rate > 10 Mbps
*
9(=0)
1=disk transfer rate > 5 Mbps but <= 10 Mbps
*
8(=0)
1=disk transfer rate <= 5 Mbps
7(=0)
1=removable cartridge drive
6(=1)
1=fixed drive
*
5(=0)
1=spindle motor control option implemented
*
4(=1)
1=head switch time > 15 ms
*
3(=1)
1=not MFM encoded
2(=0)
1=identify data incomplete
*
1(=1)
1=hard sectored
0(=0)
Reserved
Number of cylinders in default translate mode
Specific configuration
SET FEATURES subcommand is not required to spin-up
C837h
and IDENTIFY DEVICE response is complete
SET FEATURES subcommand is required to spin-up and
37C8h
IDENTIFY DEVICE response is complete
Number of heads in default translate mode
* Reserved
Number of sectors per track in default translate mode
Reserved
Serial number in ASCII (0 = not specified)
Controller type:
*
0003: dual ported, multiple sector buffer with look-ahead read
* Buffer size in 512-byte increments
Number of ECC bytes as currently selected via the set feature
*
command
Micro code version in ASCII
Model number in ASCII
Maximum number of sectors that can be transferred per interrupt
on Read and Write Multiple commands
15-8: (=80h)
7-0: Maximum number of sectors that can be transferred per
interrupt.
Travelstar 80GN Hard Disk Drive Specification
Description
111
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