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 Post subject: MOS6540
PostPosted: Tue Jul 18, 2006 10:44 am 
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Joined: Tue Jul 18, 2006 10:26 am
Posts: 3
I tried to switch on my 30 years old CBM PET2001 but it does not work.
I would like to check the MOS6540 ROMs. Most likely some (or all) have lost their contents. Has there at any time existed a pin compatible EPROM
(with 4 CS!)? I could get hold of the required contents of the ROMs(EPROMs) by making a hex-dump of another PET from exactly the same manufacturing series! (I already made a dump from a working CBM 8032 but there might be incompatibles 2001/8032!?)

I would be thankful for help/tips!


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PostPosted: Tue Jul 18, 2006 12:02 pm 
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Joined: Thu Jan 12, 2006 1:52 am
Posts: 203
Location: Denmark
I think the right guys to ask these questions are at the CBM-Hackers Mailing List'. http://www.paradroid.net/cbm-hackers.html
Or maybe you could try your luck at comp.sys.cbm.


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PostPosted: Tue Jul 18, 2006 2:07 pm 
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Joined: Wed Jan 11, 2006 12:22 pm
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Yeah there's actually a lot of PET EPROM talk on the cbm-hackers list at the moment. I'd check there first. These guys know their pets :)


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