Hi
I have an original 8580 chip as well as a SwinSID for the C64C. When I have the original chip in the single socket on the motherboard the C64 does not output any VIDEO, no picture whatsoever. When I either have no SID installed or the SwinSID it turns on fine. The last time I used the C64 about 3 months ago it was fine with the 8580 chip.
Anyone have any ideas/pointers?
Cheers, Tom