MAMEWorld Forums - EmuChat - Re: Gyruss diagnostic roms

> Hello,
>
> While reading the gyruss driver, I found a reference to diagnostic roms, however they
> are not referenced in the rom set.
>
> Do they exist, and if they do, where can I find them ? They would be very helpfull
> for me to fix a gyruss pcb with faults on sprites. Actually, all sprites are missing
> after power up.
> Since the konami-1 cpu is custom, I cannot swap it with a regular 6809. Also, the
> board suffered from corrosion which I cleaned up the best I can.
>
> thank you

AFAIK neither the main diagnostic nor audio cpu diagnostic roms have ever been found or dumped. We just know where in the memory map they WOULD be.

The subcpu konami-1/6809 runs at 2mhz clock input, correct?

LN

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