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5.3 Host Commands
C141-E218 5-27
(6) SEEK (X’70’ to X’7F’)
This command performs a seek operation to the track and selects the head
specified in the command block registers. After completing the seek operation,
the device clears the BSY bit in the Status register and generates an interrupt.
In the LBA mode, this command performs the seek operation to the cylinder and
head position in which the sector is specified with the logical block address.
At command issuance (I/O registers setting contents)
1F7
H
(CM) 0 1 1 1 x x x x
1F6
H
(DH) x L x DV Head No. / LBA [MSB]
1F5
H
(CH)
1F4
H
(CL)
1F3
H
(SN)
1F2
H
(SC)
1F1
H
(FR)
Cylinder No. [MSB] / LBA
Cylinder No. [LSB] / LBA
Sector No. / LBA [LSB]
xx
xx
At command completion (I/O registers contents to be read)
1F7
H
(ST) Status information
1F6
H
(DH) x L x DV Head No. / LBA [MSB]
1F5
H
(CH)
1F4
H
(CL)
1F3
H
(SN)
1F2
H
(SC)
1F1
H
(ER)
Cylinder No. [MSB] / LBA
Cylinder No. [LSB] / LBA
Sector No. / LBA [LSB]
xx
Error information