FBA not working with Metal Slug

[EliasPR2309]

Hello people, recently I have been using my Raspberry PI 2 with recalbox in order to play neogeo games, specially metal slug 1, 2 and 3, from what I have seen FBA works better than FB neo and other emulators for raspberry but every time I try to use it to run the above mentioned games the loading screen of the FBA appears and after it appears it goes black and returns to the main menu of recalbox, I have tried by downloading similar romsets to the one that is used in recalbox but as of now I have not been able to make it work.

I also have seen that some people made it work by using other NeoGeo BIOS instead but i have not found any that could make the games work, what else could I be doing wrong?

[Zing]

@eliaspr2309 NEOGEO is an Arcade, and Arcade has a peculiarity: you need to check the ROMSET (the "version" of the ROM). Example: MAME 2003 ROMS work with MAME 2003 core, MAME 2010 ROMS work with MAME 2010 core. The vast majority of games exist in both versions, and even other versions, but you need to have your ROMSET anyway version that the core you are using.

The NEOGEO emulator has evolved a lot and is requiring another ROMSET, as MAME, as it has more than one version, sometimes changing the core solves your problem.

About ROMSET, here is the list of used ROMSETs:
https://recalbox.gitbook.io/documentation/v/francais/tutoriels/jeux/generalite/les-roms-et-les-isos/les-romset-pour-recalbox
The ideal is to convert your ROMSET with programs like ROMULUS or CLMAMEPRO:

• https://recalbox.gitbook.io/documentation/tutorials/utility/rom-management/romulus-tutorial
• https://recalbox.gitbook.io/documentation/tutorials/utility/rom-management/clrmamepro-tutorial

Some users find it easier to download complete ROM packages from the internet, in the desired ROMSET, but it is prohibited to request or share any kind of copyrighted material on the forum, so please do not request.

About BIOS, yes, you need the correct BIOS, in the Emulationstation menu there is a BIOS checker, use it to find out which BIOS you need, and where they should be placed. BIOS is also copyrighted, so you need to do this yourself. Without BIOS neogeo will not work.