Right, I totally forgot about the RGB incompatible games.
These games work with my DC VGA box (s-video/composite) connected to a Sony CRT...
Giga Wing (US)
Skies of Arcadia (US)
Street Fighter Alpha 3 (US)
Vampire Chronicle for matching Service (JP)
As expected, they don't work using a regular 15KHz RGB cable + OSSC on the flat TV.
They work with this RGC RGB cable in 31KHz mode + OSSC on the flat TV...
https://www.retrogamingcables.co.uk/seg ... -480P-MODE
Interestingly, Giga Wing + Skies of Arcadia also work with the RGC cable in 15KHz mode.
Any chance to patch those games so they work with RGB?