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8 .2
Track Formats
M4853 RECOMMENDED FORMATTINGS
M4853 5.25 inch (130 mm) Flexible Disk Drives use industry
Standard Tunnel Erase type Read/Write Heads, and high
accuracy direct-drive brushless motor for spindle rotation,
guaranteed ±1.6% index interval and ±2% instaneous speed.
The recommended formattings for data interchange between
drives are as attached sheets, including formatting and
data re-write modes .
The drives are sufficient for the following considerations
for all 80 tracks.
(1)
The leading edge of a data block should be preceded
by the erased area when re-write.
(2)
The trailing edge of a data block should be covered
by the erased area when re-write.
(3)
The erased area should not overlap with Sector
Identifiers.
(4)
Read/Write gap should be before the next ID mark when
the erase current is falling off when re-write with
the fast rotation spindle on a slow formatted sector.
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