Re: Apple IIc woes -- HELP!

[musjndx@gsusgi2.gsu.edu (Jonathan N. Deitch)]

dempson@actrix.gen.nz (David Empson) writes:

>> Needless to say, I dismissed a motherboard swap from Apple Computer as a 
>> hideously expensive proposition.

>Alltech Electronics may be a cheaper alternative.  I don't know
>offhand if they offer IIc motherboard swaps.

I'd replace both 6551 (replace 'em with 65C51's ... they're CMOS and use
less energy) and the 1488 & 1489.  If that doesn't fix it, you're screwed
because it's a logic program.  Those four chips are the only ones that
are involved in serial communications ... oops ... there is also a single
oscilator to clock the baud rate ... you might try that too ...

Anyway, if all else fails, a new motherboard from any number of mail order
places (I use Shreve systems) is around $50-$60.

- Jonathan
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