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
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Gyruss diagnostic roms
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