Toshiba MK6017MAP manual Write Long7 32h/33h, Read Verify 40h, Write Verify8 3Ch

360014937

If an error occurs during multi-sector transfer, it will terminate the transfer by setting error information in status register and error register, without shifting into data transfer mode from the host. CY, HD, SN ( LBA) registers show the address where error has occurred.

10.8.7 Write Long7 (32h/33h)

If Long bit is “1”, this command write the data and the associated ECC data information supplied by the host. The data field transfer is 16 bit wide, but the ECC information is accepted in only 8 bits.

10.8.8 Read Verify (40h)

COMMAND CODE		0 1 0 0 0 0 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 read		00H
LBA	starting address		last address

This command is identical to a Read command except that DRQ bit is not set and no data is sent to the host. This allows the system to verify the integrity of the drive. A single interrupt is generated upon completion of a command or when an error occurs.

10.8.9 Write Verify8 (3Ch)

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 identical to a Write sector command except that verification is not performed. 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

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.

8ATA/ATAPI-4 defines this command as Vendor specific. The drive supports this command to maintain ATA-3 compatibility. User is recommended not to use this command.

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