I recently ripped the cable off an old keyboard with the big DIN plug.
Turns out that it will fit into the mega drive/genesis.
I have managed to get video to my tv using it (cut up an old RCA to RCA cable or RWY to RWY or whatever you want to call it)
Now my problem is that it comes up in black and white and scrolls, also keeps causing the TV to change from AV to S-video and back and forth.
I know this ain't the best forum to ask in the world but the response will be quicker and I'm sure someone'll know.