Specifications

5.3.2 Commands and error messages
The following table summarizes the contents of the Error and Status
registers after execution of the various ATA interface commands. Bullets
indicate valid bits. The abbreviations used in this table are shown below:
Error register Status register
Bit Description Bit Description
BBK Bad block detected DRDY Drive ready detected
UNC Uncorrectable error DWF Drive write fault detected
IDNF Requested ID not found DSC
Drive seek complete
ABRT Aborted command error CORR Corrected data error
TK0NF Track 0 not found error ERR Error bit in status register
AMNF Data address mark not
found error
Command
Error register Status register
BBK UNC IDNF ABRT TK0NF AMNF DRDY DWF DSC CORR ERR
ATA standard commands
Execute Drive
Diagnostics
See Section 5.4.1
•
Format Track
• • • • • •
Identify Drive
• • • • •
Initialize Drive
Parameters
• • •
NOP
• •
Read Buffer
• • • • •
Read DMA
• • • • • • • • • •
Read Long
• • • • • • • •
Read Multiple
• • • • • • • • • •
Read Sectors
• • • • • • • • • •
Read Verify
Sectors
• • • • • • • • • •
Recalibrate
• • • • • •
36 ATA Interface Reference Manual, Rev. C