I'm running an older version of Mame32 -- 0.80 -- and it classifies "Boot Hill" as being run with, or having a trackball. Does anyone with a newer version of Mame32 have this same thing? The control panel does not have a trackball.
EDIT: Crimeny! Just checked at "Omega Race", "Sinistar", "Tempest", and "Tron" do as well. Maybe the trackball column includes anything that's not an actual joystick... Hmmmm