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Old 15 December 2006, 19:25   #2
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Join Date: Jan 2002
Location: Germany
Posts: 6,244
Why don't you consider a software problem ?

Other than that, you have to give far more details: which kind of machine, which expansions, what software crashes in which situation etc.

Certainly, if the CIA is dead it could put random signals on the address bus causing illegal address alerts. On the other hand, if there is a problem with the address bus, it could cause the problems with the serial port while the CIA is totally ok.

Did you check for heat, dirt, bad RAM, leaking battery, weak power supply etc. (all the standard causes for random crashes which are much more likely than a dead CIA) ?
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