The Mouse is inserted into Joystick Port 0.
This port shares pin 9 with pin 6 of Joystick Port 1 (fire button).
Pin | Color | Dir | Mouse | Joystick0 | Joystick1 |
---|---|---|---|---|---|
1 | WHT | XB | Up | Up | |
2 | BLU | XA | Down | Down | |
3 | GRN | YA | Left | Left | |
4 | BWN | YB | Right | Right | |
5 | RED | n/c | n/c | n/c | |
6 | ORG | Left Button | Fire | Fire | |
7 | VCC | VCC | VCC | ||
8 | BLK | GND | GND | GND | |
9 | YLW | Right Button | (Joy1 Fire) | n/c |
The ST-series joystick ports are compatible with Atari 2600 and Atari 7800
Paddles are not supported, though and unlike the XL/XE, the ST can not control the outputs of the first 4 port pins.