To clarify my question I want to launch an arcade rom through Retroarch but use a different core than what I usually use. For example the rom I want to launch is the 6-player version of X-Men Arcade and the core I usually run with all my arcade roms is mame2016, but because of screen issues I want to run X-Men with the basic mame core.
This is what the game looks like running mame2016:
and this is what it looks like running mame:
I want it to look like the second image and the only way to do so is to run the basic mame core. So my question is that is it possible to launch X-Men with the basic mame core through LaunchBox while still being able to launch all my other arcade roms with the mame2016 core?
Thank in advance!