From: Glenn Holmer (gholmer_at_ameritech.net)
Date: 2005-05-06 11:44:20
On Thursday 05 May 2005 12:59, Spiro Trikaliotis wrote:
> OTOH, the 4040 used a gap between the data block header and the data
> block itself of 10 bytes. The 2031 and 1540 (and 1541 up to $E000-ROM
> version -02) used 8 bytes, while the 1541 (-03, -05 and later) and
> 157x use 9 byte. I believe 8 bytes are critical if a disk is to be
> interchanged between a 154x and a 4040, as there might be "double
> SYNC marks", making the data block unreadable. With 9 byte, it is
> much more unlikely that this happens than with 8 byte.
Immers and Neufeld discuss this in chapter 9.12 of "Inside Commodore
DOS."
--
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Glenn Holmer (Linux registered user #16682)
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"Greater coherence cannot be achieved. Not even the
Netherlanders have managed this." -Anton Webern
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