From: Marko Mäkelä (marko.makela_at_hut.fi)
Date: 2006-12-15 12:02:48
On Fri, Dec 15, 2006 at 07:45:39AM -0300, Andrew Wiskow wrote:
> Well, for anyone who may care, my problem has been
> solved! I tried changing out the 901229-03 ROM chip
> in the VIC-1541 with a 901229-05 ROM chip, and now the
> drive works perfectly! This had be scratching my head
> for quite a while, so I'm so happy that it's working
> now. :-D
Very interesting. What were the exact symptoms? Did you
try the drive with a Vic-20 in a multi-device setup?
At http://www.zimmers.net/anonftp/pub/cbm/firmware/drives/new/1541/
you can read my characterization of the 901229-03 firmware:
'The firmware of an old-style 1541 with long board. This ROM has an
autobooting feature: if CLK and DATA are held low during bootup, the
drive will wait for them to raise, and execute a "&*" command.'
You can also obtain 901229-01 and 901229-02 from that location.
I never come across to a 901229-04.
Marko
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