Anybody remember these?

This is a joystick from my old old TRS-80 days. I dug it out a while back and I'm wondering if there's anything that can be done with it.
It has a free-floating (non-return-to-center) joystick, which really really SUCKED for playing Pac-Man way-back-when. So I guess I wasn't surprised when I opened it up and realized there were pots inside instead of switches.

So, is there any way to put this to good use? Any way to interface it with my MAME setup? Any reason to go to the trouble? It's got this 5-pin DIN kind of connection.
