Okay, I have read over the modding threads and now I'm even more confused.
I have a Model 2 Saturn (round buttons) with a non twisted 21-pin cable (between the main and cd boards). It says MK-80000A but on the back of the case, and all the other posts said they were 64pin IC's w/ two square ICs on the cdboard. On my cd board, I see a square IC w/ 64 legs and a rectangle one with 32 legs. Which do I refer to in my search for a modchip?