mameMenu

Besides RGUI retroarch menu there a separate very important internal MAME Menu when using mame.

It does not come pre-configured with a Hot Key.

We need to set this.

There are two ways to access this internal Mame Menu on first run.

From Tab on a Keyboard or from RGUI Quick Menu, Options, Display Mame Menu. When you resume from Quick Menu. Mame Menu will be launched.

The only downside from launching Mame Menu from RGUI is that the only way to get rid of it is to go back into RGUI and turn it off.

Below I configured to launch with Select + R2.

mame settings stored here

/home/pi/RetroPie/roms/am/mame-libretro/spinner/mame2003/cfg

default.cfg

title.cfg

These files are binary but we should be able to save per game sensitivity settings in here.