I tried the SMS Sports controller(tracball) on the VCS too with Centipede and Missile Command. I had to keep the switch in the equivalent of the "joystick" position but it really worked well. I actually like it better then the Atari made tracball for the 2600.
Started mapping out the wires on the 5200 stick too. I may have to go Dr. Frankenstein on one of those sticks too.













