You could manually copy parent ROM files into each clone ZIP, but with 40,000+ ROMs, this is insane. Use automated tools.
Set the "ROM Path" to your current folder. non merged mame rom set
To understand a non-merged set, you must understand how MAME handles "parent" and "clone" ROMs. A parent is the original game (e.g., Pac-Man ), while a clone is a variation (e.g., Pac-Man - Midways update ). You could manually copy parent ROM files into
is better for your specific emulator (e.g., MAME vs. FinalBurn Neo). but with 40