Thanks for the suggestions guys. @afangus; what’s entailed for that with a Genesis? Getting some sort of VGA cable?
@dead_screem; I’m reluctant to open up the scart plug as the cable works for a wide variety of other purposes (old CRT, modern widescreen with a scart socket).
I guess I’m trying to work out why it’s happening initially as my understanding is that the OSSC should be able to tackle the Genesis with a good quality cable like this. Ideally I don’t want to pay for more cables/adapters if I can. If anything, I was expecting the SNES to present problems, which is why I tested the Genesis first as I thought it was going to be a given to work.