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Word
Content
00
045AH
or
045EH
01
xxxxH
02
C837H
03
00xxH
04
0
* Reserved
05
0
* Reserved
06
003FH
07
0000H
* Number of bytes of sector gap
08
0000H
* Number of bytes in sync field
09
0000H
* Reserved
10-19
XXXX
20
0003H
* Controller type:
21
XXXXH
* Buffer size in 512-byte increments. In case of 64MB buffer, it is set to 0x0000.
22
0038H
* Reserved
23-26
XXXX
27-46
XXXX
47
8010H
48
400XH
Table 113 Identify device information
Description
Drive classification, bit assignments:
15 (=0):
1=ATAPI device, 0=ATA device
14-8 :
retired
7 (=0):
1=removable cartridge device
6 (=1):
1=fixed device
5-3 :
retired
2 (=0):
Response incomplete
1 :
retired
0 (=0):
Reserved
Number of cylinders in default translate mode
Specific Configuration
37C8H:
Need Set Feature for spin-up after power-up
Identify Device is incomplete
738CH:
Need Set Feature for spin-up after power-up
Identify Device is complete
8C73H:
No Need Set Feature for spin-up after power-up
Identify Device is incomplete
C837H:
No Need Set Feature for spin-up after power-up
Identify Device is complete
Number of heads in default translate mode
Number of sectors per track in default translate mode
Serial number in ASCII (0 = not specified)
0003: dual ported, multiple sector buffer with look-ahead read
Microcode version in ASCII
Model number in ASCII
15-8 :
80h
7-0 :
Maximum number of sectors that can be transferred per interrupt on
Read and Write Multiple commands
Trusted Computing feature set options
15 (=0) :
Shall be cleared to zero
14 (=1) :
Shall be set to one
13-1 (=0) :
Reserved for the Trusted Computing Group
0 (=0 or 1) :
0=Trusted Computing feature set is not supported
1=Trusted Computing feature set is supported
Western Digital Hard Disk Drive OEM Specification
140
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