After 12 hours of fighting with it I have finally gotten the Ultramarc spintrak spinner and trackball to work with info gleaned from this forum.
I have now read about changing the jumper setting to “Alt” to get the i-pac legacy to actually take programming. I can find no info on what that setting is. Later boards have markings. This one does not. Can anyone give me clear instructions on how to set the jumpers to “alt”?
I have included a picture of the board in question.