Template mame.ini files for macOS MAME

Copy one of the INI files to the .mame folder in your home folder:

mkdir ~/.mame
cp ..._mame.ini ~/.mame/mame.ini

You must copy it into ~/.mame exactly as mame.ini or it won't work!

The INI file you should use depends on how you installed MAME:

• x86_64_homebrew_mame.ini: Use if you have an Intel Mac and installed MAME via Homebrew.
• arm64_homebrew_mame.ini: Use if you have an Apple Silicon Mac (M1 or newer) and installed MAME via Homebrew.
• macports_mame.ini: Use if you installed MAME via MacPorts. Works for all Macs.

A few settings have been adjusted to make MAME work well enough on macOS, like setting the video option to accel, which makes performance a lot better than the default auto setting, which doesn't even run full speed on M1 Mac mini. And lowlatency has been enabled, because why not?