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9.9 Device Signatures for Normal Output
9.9.1 Overview
Table 30 specifies the normal outputs for the READ SECTOR(S) command (see ACS-5), the IDENTIFY DEVICE
command (see ACS-5), and the EXECUTE DEVICE DIAGNOSTIC command (see ACS-5).
Table 29 Device Signatures for Normal Output
Field
Description
ERROR
Diagnostic Results – The diagnostic code as described in Table 33 is returned.
This field shall be reserved for the EXECUTE DEVICE DIAGNOSTIC command (see Section 12.6).
COUNT
See Table 30
LBA
DEVICE
Bit Description
7 Obsolete
6 N/A
5 Obsolete
4 Transport Dependent – See ACS-5
3:0 Reserved
STATUS
Bit Description
7:6 Transport Dependent – See ACS-5
5 DEVICE FAULT bit – See ACS-5
4 N/A
3 Transport Dependent – See ACS-5
2 N/A
1 N/A
0 shall be cleared to zero
Table 30 Device signatures for COUNT and LBA field
Bits
ATA device
Reserved for SATA
Obsolete
COUNT field (7:0)
01h
01h
01h
01h
N/A
LBA field (27:24)
Reserved
Reserved
Reserved
Reserved
Reserved
LBA field (23:16)
00h
C3h
96h
EBh
AAh
LBA field (15:8)
00h
3Ch
69h
14h
CEh
LBA field (7:0)
01h
01h
01h
01h
N/A
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Hard Disk Drive Specification