Introduction
F-2
F
ATA (Hard Disks/CD-ROM Drives)
The ATA command is the byte that identifies the command creating
the error condition reported in the error register. For the definition
of the error register contents, refer to the AT Attachment Interface
with Extensions (ATA-2) specification (X3T10-948D).
ATAPI (CD-ROM Drives)
For ATAPI devices, the upper byte reflects the command causing
the failure reported in the Sense Key/Error Reg byte. If the sense
key (bits 4 through 7) contains a nonzero value, then two more
bytes containing additional sense data is returned as follows:
For the definition of the error register contents, sense key data,
ASC, and ASQ, refer to the ATA Packet Interface for CD-ROMs
specification (SFF-8020i).
15 8 7 0
ATA Command Error Register Contents
15 8 7 0
ATAPI Command Sense Key Error Reg
15 8 7 0
ASC ASQ
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