Fujitsu MPD3XXXAT Product Manual page 109

At command completion (I/O registers contents to be read)
1F7 (ST)
H
1F6 (DH)
H
1F5 (CH)
H
1F4 (CL)
H
1F3 (SN)
H
1F2 (SC)
H
1F1 (ER)
H
(21) WRITE BUFFER (X'E8')
The host system can overwrite the contents of the sector buffer of the device with a desired
data pattern by issuing this command. Upon receipt of this command, the device sets the BSY
bit of the Status register. Then the device sets the DRQ bit of Status register and clears the
BSY bit when the device is ready to receive the data. After that, 512 bytes of data is
transferred from the host and the device writes the data to the sector buffer, then generates an
interrupt.
At command issuance (I/O registers setting contents)
1F7 (CM)
H
1F6 (DH)
H
1F5 (CH)
H
1F4 (CL)
H
1F3 (SN)
H
1F2 (SC)
H
1F1 (FR)
H
At command completion (I/O registers contents to be read)
1F7 (ST)
H
1F6 (DH)
H
1F5 (CH)
H
1F4 (CL)
H
1F3 (SN)
H
1F2 (SC)
H
1F1 (ER)
H
5 - 42
Status information
DV
xx
xx
xx
xx
Error information
1 1 1 0
DV
xx
xx
xx
xx
xx
Status information
DV
xx
xx
xx
xx
Error information
C141-E069-02EN
xx
1 0 0 0
xx
xx