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ELITE SERIES USER MANUAL APPEN. A - DISK I/O
Normal Byte Hex FF Self-Sync Byte Hex FT
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0
Fig. A-7: Self-Sync Byte
Five self-sync bytes are sufficient to show that
the hardware is reading valid data because the
hardware requires the first bit of a byte to be
a 1 (an Apple-GCR restriction).
As long as the disk is left in read mode, it
will continue to correctly interpret the data
unless there is an error on the track.
A.5. Gaps
The size of the three gap types will vary from
drive to drive and even from track to track.
During initialization (INIT) DOS will start with
large gaps and make them smaller until a
complete track can be written without overlap-
ping itself.
Page A-19