GoTo Connector

TI-99/4A Joystick Port

9 PIN D-SUB MALE (At the computer)
9 PIN D-SUB FEMALE (At the joystick cable)

9 PIN D-SUB MALE at the computer.
9 PIN D-SUB FEMALE at the joystick cable.

Pin Dir Name
1 - N.C.
2 OUT Test joystick 2
3 IN UP
4 IN Fire button pressed
5 IN Left
6 - N.C.
7 OUT Test joystick
8 IN Down
9 IN Right

Note: Direction is Computer relative Device.