In my es_input.cfg file in /home/pi/.emulationstation, I tried some different combinations of the following where mouse is replaced with track, trackball, and the deviceGUID of 0 and1, but still can’t get mame to detect it.
In advancemame, the trackball does work, but the game doesn’t… :)
<inputConfig type=”mouse” deviceName=”mouse” deviceGUID=”1″>
<input name=”Track X” type=”key” id=”0″ value=”0″ />
<input name=”Track Y” type=”key” id=”222″ value=”0″ />
</inputConfig>
`