[Coco] MC-10 Joystick Interface

[Torsten Dittel]

Here's what I figured out about the MC-10 Joystick interface.

PCB view:

http://www.sinu.info/misc/mc10ji_1.jpg
http://www.sinu.info/misc/mc10ji_2.jpg
http://www.sinu.info/misc/mc10ji_3.jpg

Connector:

(1) (2) (3) (4) (5)

  (6) (7) (8) (9)

1 = Up
2 = Down
3 = Left
4 = Right
6 = Fire
8 = GND

Adresses:

Right Joystick: $BF30
Left  Joystick: $BF34

Bits ( = 0 if connected to GND, otherwise = 1):

| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | 
+---+---+---+---+---+---+---+---+
| X | X | X | F | R | L | D | U | 

4 = Fire
3 = Right
2 = Left
1 = Down
0 = Up

Looks like the interface can be easily used to watch the state of 10
switches.

Regards,
Torsten