800XL Joystick response in Atari 8-Bit Computers Posted March 2, 2020 I have an 800XL that doesn't respond to the joystick down in Port 1. Joystick works ok in port 2. Have resoldered the joystick input connections and no change. I have no idea where to start trouble shooting. Is there a particular chip/pin that carries that joystick signal?