Toshiba MK1032GAX 11.8.12 Format Track


COMMAND CODE		0 0 1 1 1 1 0 0	REGISTER
	REGISTER SETTING		NORMAL COMPLETION
DR	drive no.		no change
CY	starting cylinder		last possible
HD	starting head		last possible
SN	starting sector		start sector
SC	no. of sector to be written		00H
LBA	starting address		last address

This command is all identical to a Write sector command. Read verification is not performed in this command. A Write verify command transfers the number of sectors (1-256) defined in SC register from the host to the drive, then the data is written on the media. The starting sector is defined in CY, HD, SN (LBA) registers.

Upon receipt of the command, the drive sets DRQ until one sector of data is transferred from the host, then resets DRQ, sets BSY. In case of multi- sector transfer, it sets DRQ, resets BSY and generate an interrupt to report the host that the host is ready to receive 1 sector of data. The drive will seek to the target track if the R/W head is not on the target track (implied seek). Reaching the target sector, the command transfers the sector data from the host to the media. After transferring the last data in the buffer, it sets BSY and issues an Interrupt.

11.8.12 Format Track 7				(50h)

	COMMAND CODE			0 1 0 1 0 0 0 0	REGISTER
		REGISTER SETTING			NORMAL COMPLETION
	DR		drive no.		no change
	CY	cylinder to format			no change
	HD	head to format			no change
	SN				01H
	SC				00H
	FT				no change

The track specified by the task file is formatted with ID and data fields according to the table transferred to the buffer. This command is rejected in LBA mode with an Aborted command error reported.

DRQ in status register is set as soon as the command register is written, and the buffer RAM receives the data transferred from the host. After 512 bytes are transferred into the buffer RAM, the drive resets DRQ, sets BSY and begins format operation. The drive seeks to the target cylinder if the head is not on the target track ( implied seek ). After completion of the command, it resets BSY and generates an interrupt.

Format table consists of the number of sectors ( 16 bits ) per track . Upper byte represents sector number, and lower byte represents format type.

The drive supports only 00H format type. Intending to maintain compatibility with previous models, the drive accepts any format type, but the function will not change.

Sector interleave is always set to one regardless of sector sequence in the format table. Data subsequent to format table are handled as “Don't care”.

7ATA/ATAPI-4 defines this command as Vendor specific. The drive supports this command to maintain ATA-3, and the previous models compatibility. User is recommended not to use this command.

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11.8.12 Format Track 7