Hello, I have a problem to play the FBA/Mame games Demon Front and Mortal Kombat 3. I have the bios file neogeo.zip and the dmnfrnt.zip, mk3.zip in the same folder.   I processed the dmnfrnt.zip, mk3.zip file with clrmamepro and the .dat file from the recalbox roms/fba ,/fba_liberto and mame.But nothing blackscreen with all cores/Emu. Please help me. At the clip from recalbox.com on youtube he shows that mk3 and dmnfrnt are working on the Recalbox. Sorry for my bad english. I have a RPI3 with the news image.