Datasheet

Seek
This command is supported for backward compatibility. Although this command has no actual function, it does
perform a range check of valid track, and posts an IDNF error if the Head or Cylinder specified are out of bounds.
Seek Command Issued by Host
Task File Register 7 6 5 4 3 2 1 0
COMMAND 7xh
DRIVE/HEAD nu L nu D H[3:0] or LBA[27:24] of the track
CYLINDER HI Cylinder[15:8] or LBA[23:16] of the track
CYLINDER LOW Cylinder[7:0] or LBA[15:8] of the track
SECTOR START (Valid in LBA mode only) LBA[7:0] of the track
SECTOR COUNT nu
FEATURES nu
Command Block specified upon completion/termination of Seek command (7xh)
Task File Register 7 6 5 4 3 2 1 0
BSY DRDY DWF DSC DRQ CORR IDX ERR
STATUS 0 1 0 1 0 0 0 0
DRIVE/HEAD na na na na na
CYLINDER HI na
CYLINDER LOW na
SECTOR na
SECTOR COUNT na
BBK UNC MC IDNF MCR ABRT TK0NF AMNF
ERROR 0 0 0 V 0 0 0 0