FDC37C669_07 SMSC [SMSC Corporation], FDC37C669_07 Datasheet - Page 61
FDC37C669_07
Manufacturer Part Number
FDC37C669_07
Description
PC 98/99 Compliant Super I/O Floppy Disk Controller with Infrared Support
Manufacturer
SMSC [SMSC Corporation]
Datasheet
1.FDC37C669_07.pdf
(164 pages)
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Verify
The Verify command is used to verify the data
stored on a disk. This command acts exactly
like a Read Data command except that no data
is transferred to the host. Data is read from the
disk and CRC is computed and checked against
the previously-stored value.
Because data is not transferred to the host, TC
(pin 25) cannot be used to terminate this
command.
implicit TC will be issued to the FDC.
implicit TC will occur when the SC value has
decremented to 0 (an SC value of 0 will verify
256 sectors).
NOTE: If MT is set to "1" and the SC value is greater than the number of remaining formatted sectors
on Side 0, verifying will continue on Side 1 of the disk.
MT
0
0
0
0
1
1
1
1
By setting the EC bit to "1", an
This command can also be
EC
0
0
1
1
0
0
1
1
Table 25 - Verify Command Result Phase Table
SC = DTL
EOT < # Sectors Per Side
SC = DTL
EOT > # Sectors Per Side
SC < # Sectors Remaining AND
EOT < # Sectors Per Side
SC > # Sectors Remaining OR
EOT > # Sectors Per Side
SC = DTL
EOT < # Sectors Per Side
SC = DTL
EOT > # Sectors Per Side
SC < # Sectors Remaining AND
EOT < # Sectors Per Side
SC > # Sectors Remaining OR
EOT > # Sectors Per Side
SC/EOT VALUE
This
61
terminated by setting the EC bit to "0" and the
EOT value equal to the final sector to be
checked. If EC is set to "0", DTL/SC should be
programmed to 0FFH. Refer to Table 26 and
Table 27 for information concerning the values
of MT and EC versus SC and EOT value.
Definitions:
# Sectors Per Side = Number of formatted
sectors per each side of the disk.
# Sectors Remaining = Number of formatted
sectors left which can be read, including side 1
of the disk if MT is set to "1".
Success Termination
Result Phase Valid
Unsuccessful Termination
Result Phase Invalid
Successful Termination
Result Phase Valid
Unsuccessful Termination
Result Phase Invalid
Successful Termination
Result Phase Valid
Unsuccessful Termination
Result Phase Invalid
Successful Termination
Result Phase Valid
Unsuccessful Termination
Result Phase Invalid
TERMINATION RESULT
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