Fujitsu MPB3052AT User Manual download pdf (Page 90)

C141-E045-02EN 5 - 25

1) Single word DMA transfer mode 2:

Sets the FR register = X'03' and SC register = X'12' by the SET FEATURES

command

2) Multiword DMA transfer mode 2:

Sets the FR register = X'03' and SC register = X'22' by the SET FEATURES

command

3) Ultra DMA transfer mode 2:

Sets the FR register = X'03' and SC register = X'42' by the SET FEATURES

command

At command issuance (I/O registers setting contents)

1F7

(CM) 1 1 0 0 1 0 1 R

1F6

(DH)

DV Start head No. /LBA [MSB]

1F5

(CH)

1F4

(CL)

1F3

(SN)

1F2

(SC)

1F1

(FR)

Start cylinder No. [MSB]/ LBA

Start cylinder No. [LSB] / LBA

Start sector No. / LBA [LSB]

Transfer sector count

R = 0 →with Retry

R = 1 →without Retry

At command completion (I/O registers contents to be read)

1F7

(ST) Status information

1F6

(DH)

DV End head No. /LBA [MSB]

1F5

(CH)

1F4

(CL)

1F3

(SN)

1F2

(SC)

1F1

(ER)

End cylinder No. [MSB] / LBA

End cylinder No. [LSB] / LBA

End sector No. / LBA [LSB]

00 (*1)

Error information

*1 If the command is terminated due to an error, the remaining number of

sectors of which data was not transferred is set in this register.

(8) WRITE VERIFY (X'3C')

This command operates similarly to the WRITE SECTOR(S) command except that the device

verifies each sector immediately after being written. The verify operation is a read and check

for data errors without data transfer. Any error that is detected during the verify operation is

posted.

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Fujitsu MPB3052AT User Manual Page 90

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