team (the architects of RetroArch). They ported version 0.78 into a "core" known as
emulator core. Using ROMs from newer MAME versions (e.g., 0.2xx) will often result in "missing files" or "incorrect CRC" errors. Filtering & Management mame 078 rom set download link
: This is the most reliable source for the complete directory. You can download individual ZIP files or the entire set via the download options (look for the "MAME_078_archive.torrent" or "SHOW ALL"). team (the architects of RetroArch)