I remember playing Moon Patrol on an 800 XL as a kid with a 1 button controller (push the button to shoot and push up on the stick to jump) The 5200 version makes you use 2 buttons, 1 for shoot and 1 for jump) it really ruins the game play when using my Coin Controls Comp. Pro joystick.
Does anyone know of a rom hack that uses only a single button like the xe/xl version?