Reply To: Ossc and modded Megadrive

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March 5, 2019 at 10:08 AM #25479
renovigo
Participant

Thanks for sharing this.
Well, I took a look again inside my VA4, and as I suspected the overclock mod to be the guilty in this story, I tweaked it again, changed wires, add fresh solder, and it worked again.
I know the ossc has nothing to do with it, but now I really hesitate to plug this VA4 to it !

ps : 10Mhz oscillator on a Signetics CPU for an overclock can work pretty good, contrary to all we could read.