Read Verify (40H); Read Verify Ext (42H) - Toshiba MK3006GAL Specification

10.8.9 Read Verify (40h)

COMMAND CODE
REGISTER SETTING
DR
CY
HD
SN
SC no. of sector to be read
LBA
This command is identical to a Read command except that the drive has read the data from the media, and
the 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.

10.8.10 Read Verify EXT (42h)

COMMAND CODE
DR
LBA Current
Low Previous
LBA Current
Mid Previous
LBA Current
High Previous
SC Current
Previous
FT Current
Previous
This command is identical to a Read EXT command except that the drive has read the data from the media,
and the 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.
This command is available in LBA addressing only.
0 1 0 0 0 0 0 0
drive no.
starting cylinder
starting head
starting sector
starting address
0 1 0 0 0 0 1 0
REGISTER SETTING
drive no.
LBA(7:0)
LBA(31:24)
LBA(15:8)
LBA(39:32)
LBA(23:16)
LBA(47:40)
sector count(7:0)
sector count(15:8)
reserved
reserved
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REGISTER
NORMAL COMPLETION
no change
last possible
last possible
start sector
00H
last address
REGISTER
NORMAL COMPLETION
no change
HOB=0 last address
HOB=1 last address
HOB=0 last address
HOB=1 last address
HOB=0 last address
HOB=1 last address
HOB=0
HOB=1
HOB=0 no change
HOB=1 no change
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