'Nothing I do can remaster this track pro'
Author:Pete Rittwage (registered user: 558 posts )
Date: Thu, Jul 08th, 2010 @ 09:30 ( . )

I believe it's counting/measuring the sync length on track 19 and then checking for the GCR pattern after- it's been years since I looked at it. I could also be checking the exact length of the track using timers.

Writing it back was hit and miss. I think I tried a few times and eventually it was close enough to work, but it is just finicky.

Disassemble it to find out if you're curious what it's looking for- you can use the VICE monitor and look at the code it's running from drive RAM between 0300-07ff on dev 8: The address it shows when you go to dev 8: will give you a clue to the area of the code to look for. If you don't know 6502 or how the drive works, you are flying blind.


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--* Nothing I do can remaster this track pro
7/08/2010 @ 11:34--hyper active
7/08/2010 @ 12:06----Pete Rittwage
7/08/2010 @ 17:03--Nate
7/08/2010 @ 20:08----Pete Rittwage
7/08/2010 @ 20:23------Pete Rittwage
7/08/2010 @ 20:37----hyper active
7/08/2010 @ 20:45------Pete Rittwage
7/08/2010 @ 20:49--------Pete Rittwage
7/08/2010 @ 20:57----------Pete Rittwage
7/08/2010 @ 21:36------------hyper active
7/08/2010 @ 21:45--------------Pete Rittwage
7/08/2010 @ 21:53--------------hyper active
7/08/2010 @ 23:41----------------hyper active
7/09/2010 @ 12:47------------------Nate
7/09/2010 @ 22:30--------------------hyper active

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