I had a joystick attached to my 500 back in the 80s. It had a black base that was molded to fit your hand rather than a normal flat base you could set on a table. It had a red stick with microswitches that made a nice clicky sound. It also had two red fire buttons in the side of the molded case right where the index and middle finger were.
Does anyone remember this joystick, what it was called, and if anyone happens to still sell these? I'm not sure what key word to search ebay for.
brian