360050398

10.8.11 Write Verify6 (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 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.

10.8.12 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.

6ATA/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.

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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