Re: Omega Race Question

Typically the checksums in KK are generated with a NOP fixture for the CPU,
then you start/stop the read on the chip select.

As for the suspect TL08X, if you get no output, but you get input, have you
checked the supply voltage for these devices? Have you scoped the inputs?
It would be unlikely that both have failed unless the supply for them went
ballistic and blew them together...

John :-#)#

At 04:18 PM 9/2/1999 -0700, you wrote:
>I recently fixed an Omega Race board so that all the logic now works. The
>game passes all the ram and rom tests and coins up. I think that I just
>need to replace one or more of the TL08xCP Op Amps because I'm not getting
>any X or Y signal. The X and Y pots are fine.
>
>Anyway - maybe someone could answer this question for me. I fixed this
>game using my KK Test fixture. The instructions also include signatures
>for certain roms but don't really explain the setup for getting the
>signatures. Does anyone know how to do this? I'm just curious since it
>might help me in the future.
>
>
>Matt

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Received on Fri Sep 3 00:52:25 1999