The core is the default recommended emulator for the Raspberry Pi 3 and earlier models. To get these games to launch, you cannot use just any MAME ROMs; you specifically need the 0.78 set to match the emulator's "internal map" of the game data. Navigating the "Full Non-Merged" vs. "Split" Sets
, which often includes links to the 2003 (0.78) non-merged collections. Custom Packs : Curated packs like the Evil Walrus MAME 0.78 Pack are designed specifically for RetroPie users. Key Details for Setup MAME Full Setup Guide mame 078 rom set download link
