Tag: atari st joystick port pinout

Atari ST 9 pin Male D Sub Mouse and Joystick Port pinout / Port 1 is shared with Mouse – Port 2 is Joystick Only

• Pin 1  = Up (Also acts as mouse direction on port 1)
• Pin 2 = Down (Also acts as mouse direction on port 1)
• Pin 3 = Left (Also acts as mouse direction on port 1)
• Pin 4 = Right (Also acts as mouse direction on port 1)
• Pin 5  = Not Connected on Joysticks (Acts as middle mouse button / scroll-wheel button on port 1)
• Pin 6 = Fire Button 1 (Also acts as mouse button on port 1)
• Pin 7 = 5 Volts DC- Power Supply from computer
• Pin 8 = Ground
• Pin 9 = Fire Button 2 (Also acts as mouse button on port 1)

Atari ST computers have two 9 pin D SUB type connectors with male pins, Port 1 is  used for connecting a mouse, but for two player gaming the mouse can be unplugged and two joysticks or other game controllers can be connected at the same time.

The controller needs to be compatible with the Atari or Kempston standard such as Competition Pro, ZipStick, QuickShot, Atari, Cheetah etc are supported

For two player games with two controllers you will have to unplug the mouse, unless you use a joystick switcher

Atari ST mouse adapters are now available than allow modern USB mice to be used with the 9 pin mouse port