Fujitsu MPG3XXXAH Format Track, READ LONG X22 or, 1F7 HCM, 1F6 HDH, Head No. /LBA MSB, 1F5 HCH

Models: MPG3XXXAH

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(17)FORMAT TRACK (X'50')

(17)FORMAT TRACK (X'50')

Upon receipt of this command, the device sets the DRQ bit and waits the completion of 512-byte format parameter transfer from the host system. After completion of transfer, the device clears the DRQ bits, sets the BSY bit. However the device does not perform format operation, but the drive clears the BYS bit and generates an interrupt soon. When the command execution completes, the device clears the BSY bit and generates an interrupt.

The drive supports this command for keep the compatibility with previous drive only.

(18)READ LONG (X'22' or X'23')

This command operates similarly to the READ SECTOR(S) command except that the device transfers the data in the requested sector and the ECC bytes to the host system. The ECC error correction is not performed for this command. This command is used for checking ECC function by combining with the WRITE LONG command.

The READ LONG command supports only single sector operation.

At command issuance (I/O registers setting contents)

1F7H(CM)

0

0

1

 

0

 

0

0

1

R

 

 

 

 

 

 

 

 

 

1F6H(DH)

×

L

 

×

 

DV

 

Head No. /LBA [MSB]

 

 

 

 

 

 

 

 

 

 

1F5H(CH)

 

 

Cylinder No. [MSB] / LBA

 

 

 

1F4H(CL)

 

 

Cylinder No. [LSB] / LBA

 

 

 

1F3H(SN)

 

 

Sector No.

 

 

/ LBA [LSB]

 

 

1F2H(SC)

 

 

Number of sectors to be transferred

 

 

1F1H(FR)

 

 

 

 

 

xx

 

 

 

 

R = 0 or 1

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

1F7H(ST)

 

 

 

Status information

 

 

 

 

 

 

 

 

1F6H(DH)

×

L

 

×

 

DV

Head No. /LBA [MSB]

 

 

 

 

 

 

 

1F5H(CH)

 

 

Cylinder No. [MSB] / LBA

1F4H(CL)

 

 

Cylinder No. [LSB] / LBA

1F3H(SN)

 

 

Sector No.

 

/ LBA [LSB]

1F2H(SC)

 

 

 

 

 

00 (*1)

1F1H(ER)

 

 

 

Error information

*1 If the command is terminated due to an error, this register indicates 01.

(19)WRITE LONG (X'32' or X'33')

This command operates similarly to the READ SECTOR(S) command except that the device writes the data and the ECC bytes transferred from the host system to the disk medium. The device does not generate ECC bytes by itself. The WRITE LONG command supports only single sector operation.

This command is operated under the following conditions:

C141-E112-01EN

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Page 108
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Fujitsu MPG3XXXAH Format Track, READ LONG X22 or, The READ LONG command supports only single sector operation, 1F7 HCM