11 June 2010, 12:41 | #1 |
Total Numpty
Join Date: May 2010
Location: Lazy town
Posts: 20
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Commodore 64 dead at a guess
I have come by a Commodore 64 computer. When powered on it comes up with a white square with black surround (I think) and a lot of squiggle in the middle like moving sprites. I am guessing this is fried?
Shame as its all boxed and came with a boxed floppy drive boxed tape deck and boxed joystick. Obviously cant test any of these if the above is broke. Cheers |
11 June 2010, 12:48 | #2 |
Registered User
Join Date: Apr 2010
Location: Worthing/UK
Posts: 117
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Hi Blast,
This may be of use Page 66 onwards ftp://ftp.scs-trc.net/pub/c64/Tools/...pair_Guide.rar and possibly this one. sounds like a ROM or PLA problem to me: http://personalpages.tds.net/~rcarlsen/cbm/c64-ic.txt Regards, Ross. Last edited by rossb; 11 June 2010 at 13:06. Reason: Link addition |
11 June 2010, 14:31 | #3 |
Total Numpty
Join Date: May 2010
Location: Lazy town
Posts: 20
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Many thanks for the reply. I'll take a look at the screen again and maybe take a picture to post.
I do attempt minor repairs on any machines but if it gets more technical than screwing a few pieces in and out of involves soldering then thats probably not for me. Cheers |
11 June 2010, 17:58 | #4 |
Registered User
Join Date: May 2001
Location: ?
Posts: 19,658
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Black and white sounds odd. Maybe you have a machine that doesn't work with your TV's video norm?
The messed up characters could be one of many things, probably a broken PLA chip. It could also be the Character ROM. |
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