Ive been trying like hell to get neogeo roms to run in mame and FBA Im kinda at my wits end. I have retropie 2.2 and mame runs any other kind of rom fine except the neogeo roms. Yes, I have the neogeo bios files and they are placed, unzipped, in the mame roms directory. I have a few games such as metal slug, zenblade, etc in there to test with. They all give the same error.
neo-geo.rom WRONG CRC
I know that these files are good because they play flawlessly with the NEOGEO emulator on my motorola android phone (NEO.emu). I transferred them directly over to the pi via ftp.
None of the above roms will work in FBA either. While I do not get a CRC error with the bios rom, I just get a blank screen which seems frozen and will not exit back to ES using the controller hotkey. So I have to bounce the pi.