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ARCADE TRACKBALL will it work with OPTI - PAC ???
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JODY:

--- Quote from: Matt Berry on February 11, 2005, 12:21:11 pm ---I have a centipede trackball that I tried a couple different ways of hooking up but it never worked right. The cursor would just sit there and flutter. Maybe either the boards were bad, or I never had it hooked up right, either way I couldn't get it to work so far. I have a couple of other trackballs so I didn't spend a lot of time with it either, and yes everything was spinning / aligned ect.

--- End quote ---

Did you disable joystick input in Mame?  Other controls can interfere unless you unplug them or disable their input.
RayB:
You also have to figure out if the jumper on the opti-pac must be "active high" or "active low".

That said, I have a Wico that only one direction worked and the other direction "fluttered" as you say. Could be you have bad optics.
Matt Berry:
I have 2 opti pacs, because I have 2 seperate controllers I've been using as prototypes to get the perfect layout. That said on that particular one I had the ultimarc 2 1/4 Track ball mounted and working (the other controller has a 3" Happ trackball) after testing things out with the ultimarc TB, I disconnected it and threw in the centipede TB, it didn't work, I messed with the wires and the jumper, now I'm sure I didn't try every possible combination on this trackball, because I have a few other ones on hand, so I threw it to the side. Hi my name is Matt, I have a problem, I'm addicted to Track balls. I currently have 4 - 2 1/4" Trackballs and 4 - 3" Trackballs. So you can see why I didn't bother spending too much time with it. Why do I have so many trackballs you ask, because I can, they were there and they were cheap, so why not  ;D
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