I'd like to make an RGB scart cable for MD1 but using CSYNC instead of over Composite. It will be going into a 4:3 CRT so don't need to worry about 16:9 switching. Could someone provide me with a schematic please?
When I search, I either find "sync over composite" ones or conflicting info on resistor and capacitor values. e.g. either 75ohm & 220uf on the RGB or jus the 75ohm. Plus not sure what needs to be on the CSYNC pin but I understand the MD outputs +5V TTL on it so can't be used directly.
I assume that if you make this sort of the cable you don't need to do any internal "sync mod" on the Mega Drive? I'm not looking for uber quality, just something better than the usual RGB cables on eBay. I could buy one, but I have all the components already and soldering skills so why spend £30!