Mame Menu is used to set Mouse/Spinner Sensitivity per game.
It seems with lr-mame2003 we can't just arbitrarily use a spinner for any game we think could work.
Gyruss or diving games look like a spinner would work, but mame meny give no sensitivity options and no spinner or trackball does nothing. Joystick only.
So gyruss should get moved out of spinner. There are NO analog setting in mame 2003 for gyruss.
Still sensitivity make a huge difference for some games.
Arkanoid2 changed dial from 70% to 120 %
Arkanoid 1 from 30 to 100%
Cosmic Chasm works as is.
Mame configured options are stored in roms dir under mame2003 subdir.
\\centipede\roms\am\mame-libretro\trackball\mame2003\cfg