SegaXtreme

I"m going to go with in the beggining the atari(i forget what one i had and i'm to lazzy to find it) then towards the end of the 80s it was the commador 64(got to love maniac mansion for it especially when you microwave the hamster and when they call each other chicken shit, maybe that was just the version i had who knows i had 2 versions of it.)