: The "u" (update) designation indicates this was a "beta" or incremental release between major versions 0.159 and 0.160.
Every single ROM ZIP file in a non-merged set is entirely self-contained. The archive holds both the parent files and all clone files required to execute that specific regional version or revision. Mame 0.159u2 Roms
: MAME 0.159u2 binary (32-bit or 64-bit). Using a newer MAME will result in missing ROM errors. : The "u" (update) designation indicates this was