> Does anyone know if you can solder a cable which would allow you to
> use an old joystick (atari years), a mouse or something plugged

into

> the foot controller module
> I saw a pic on synthesizers.com website where they did, anyone

tried

> it with the doepfer module

As far as I know the atari type joysticks were usually digitally
switched, i.e. you'd need circuitry to get an analog output. The
acorn BBC used an analog joystick. As this used passive pots it could
conceivably be used for the foot switch and no circuitry required
except for perhaps some resistors for the offset.

I gave mine away just a few months ago :-( so I can't check.