Mame 2003 does not register key bindings

Hi all

I’ve been trying to change key bindings on mame 2003 emulator using the in game menu by pressing tab. Though when I try to change keys to picade controls it won’t register the keys. I read that solution is to use fba emulator but this defeats the purpose as that emulator is not designed for mame rom sets. Thanks for the help!

Are you using a new system with an X HAT, or an old one with a previous version of the HAT?

I’m using the new, 10 inch screen picade. I solved it… Reflashed sd card with retro pie. Then installed xhat drivers. Then updated retro pie and emulator cores via internet. Then when I went to play games inside mame 2003 they configured properly without me having to change anything in game.