On Fri, Dec 10, 2004 at 01:24:35AM -0500, dorian wrote:
> so in other words, even if the math box isn't working i should get a test
> screen?
Correct.
btw, which game did you say this was?
What are the symptoms again? (any sound in selftest?)
Are the supply voltages correct?
-Mark
>
> my problem is the address decoder isn't changing. there are 4 address lines
> with suspect waveforms.
> but the 6502 is good and the buffers i am convinced are good. the input pins
> on the decoder chips don't seem to be shorted to ground or vcc. i don't see
> anything shorting the address lines. i am getting continuity thru the
> traces. i don't see what is causing the problem.
>
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Received on Fri Dec 10 07:01:27 2004
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