Did you look at the microprocessor interrupt pin?
On May 27, 2012 1:40 AM, "Kevin Moore" <talon.k@gmail.com> wrote:
> I've got a Centipede that just won't play.
>
> You can get it to show the highscore table, and a field of mushrooms.
>
> No attract screen runs.
> test mode does not indicate any errors.
>
> Can input coins but can't use p1 or p2
>
> So far
> Voltages good
> Rom tests good.
> Long Ram test good. 0000-07FF
> I did go through signature analysis since it was on the schematics, those
> check good.
>
> Replaced CPU and Pokey jic.
>
> Clocks appear good.
>
> This board was running, it had sync problems which were repaired, worked
> for a few months.
>
> :(
>
> Kevin
>
>
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Received on Sun May 27 10:40:21 2012
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