In the MESS emulator folder, under hash folder, place your zip ROMs (games) format (extension) with the bios studio II (extension) zip and the hash file studio II (extension) xml. Do not forget to perform a "scan" detection of the ROMs (games, bios and hash) of the subset in MESSui / options / directories ...
Once in play
Press F3
Press A (qwerty) or Q (azerty)
Video