If you use the MAME 2003 core (which is based on MAME 0.78), RetroArch offers an online updater for BIOS files. Go to: Main Menu → Online Updater → Update Core System Files . This downloads a new MAME 0.78-compatible BIOS pack directly into your system/ folder.
Arcade emulators are strictly version-dependent. For a game to run, the emulator must have the exact ROM and BIOS files that match its internal database. mame 078 bios pack new