Obtain a MAME 0.78 (Non-Merged) set. This is about 11-12 GB zipped.
: All versions of a game (parent and all clones) are packed into a single large ZIP. This saves space but can be harder for some front-ends to parse. Technical Requirements mame 2003plus reference link full nonmerged romsets
`/roms/ | |-- 1942.zip (Non-merged - contains 1942, audio CPU, graphics) |-- pacman.zip (Non-merged - contains pacman.6e, pacman.6f, etc.) |-- neogeo.zip (The universal BIOS - often still required even in non-merged, but non-merged games include a copy) |-- sf2.zip (Street Fighter II - World) |-- README.dat Obtain a MAME 0
When downloading or building a reference set, the organization of the files is critical. The "Full Non-Merged" format is the most robust but also the largest. mame 2003plus reference link full nonmerged romsets