Re: 1541 question (was Re: Catweasel)

From: groepaz (
Date: 2002-07-11 14:23:51

Hello Daniel,

Wednesday, July 10, 2002, 10:58:56 PM, you wrote:

DK> On Wed, 10 Jul 2002, Bryan Pope wrote:

>> And thusly Nicolas Welte spake:
>> > 
>> > track drives, not the old 40 track ones (because the 1541 also has 80 tracks,
>> > even if it uses the head from a 40 track drive).
>> > 
>> So is it possible to move the 1541's head as if there were 80 tracks?

DK> Yes it is.  It's called "halftracks" and has been used for copy
DK> protection.  Some of the tracks were shifted a halftrack up or down.  You
DK> can't use more than 35-40 tracks though.  When reading a halftrack as a
DK> normal track, alot of bit errors will appear, and thus not allowing a
DK> copy.

not exactly - most (if not all, minus the clones maybe) can use track
0.5 - 42.5 fine.

Best regards,

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