Fujitsu MHA2021AT Product Manual page 92

1F7
1F6
1F5
1F4
1F3
1F2
1F1
1F7
1F6
1F5
1F4
1F3
1F2
1F1
(12) IDENTIFY DEVICE (X'EC')
The host system issues the IDENTIFY DEVICE command to read parameter
information (512 bytes) from the device. Upon receipt of this command, the drive
sets the BSY bit of Status register and sets required parameter information in the
sector buffer. The device then sets the DRQ bit of the Status register, and
generates an interrupt. After that, the host system reads the information out of the
sector buffer. Table 5.4 shows the arrangements and values of the parameter
words and the meaning in the buffer.
C141-E042-01EN
At command issuance (I/O registers setting contents)
(CM) 1 0
H
(DH)
H
(CH) xx
H
(CL) xx
H
(SN) xx
H
(SC) Number of sectors/track
H
(FR) xx
H
At command completion (I/O registers contents to be read)
(ST) Status information
H
(DH)
H
(CH) xx
H
(CL) xx
H
(SN) xx
H
(SC) Number of sectors/track
H
(ER) Error infomation
H
0 1 0 0
DV Max. head No.
DV Max. head No.
5.3 Host Commands
0 1
5-31