I am using this, what I believe is the latest version on mame.
mame0130b.exe
When I was using a version on mame 32 all I did was go into the "ini" folder and set mouse to "1"
However with this latest version of mame I can seem to find the "ini" folder. I'm try to get games like centipede etc. to work using the trackball.
Any help would be greatly appreciated.
Thanks