Filter
Top Products
Toshiba Corporation Digital Media Network Company
Page 65 of 153
© 2003, Copyright TOSHIBA Corporation All Rights Reserved
11.8.11 Write Verify
6
(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.
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.
6
ATA/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.
7
ATA/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.