For a new user looking to play X-Men vs. Street Fighter or Sunset Riders without a computer science degree, 0.78 is the answer.
are not universal. A ROM file is a collection of data dumped from an arcade machine's physical chips. As dumping techniques improve, these files are updated. Because MAME 0.78 is fixed in time, it requires files specifically dumped and named according to 2003 standards. Using a modern romset with an older emulator—or vice versa—typically results in "missing files" errors, even if the game title is the same. MAME Documentation A Gateway to the Past mame 0.78 romset
The defining feature of a 0.78 set is the ( .dat ). This XML file contains the exact checksums for every ROM. You give this file to a ROM manager (like ClrMamePro or Romulus ). The manager scans your folder and tells you exactly what is missing or incorrect. For a new user looking to play X-Men vs