The ROM file belongs to a different version of MAME. You must use a DAT utility to downgrade or upgrade the file.
A ROM set is a collection of game data dumped from original arcade circuit boards. MAME is strict about version matching; a ROM set designed for a modern version of MAME will likely fail to load on version 0.119 due to changes in how dumps are categorized and split. Rom Set Types mame 0.119 roms
Clone games contain only the files that differ from the parent game. You must keep the parent ROM zip in the same directory for the clone to work. Sourcing and Verifying 0.119 ROMs The ROM file belongs to a different version of MAME
Many famous ROM sets were curated and finalized around the 0.119–0.120 era. Because ROM formats change as emulators find better ways to "dump" original arcade chips, a ROM that worked in 2007 might not work in 2024. For users who have an "if it ain't broke, don't fix it" collection, sticking with 0.119 ensures their curated library stays playable without constant updates. 3. Stability for Custom Front-Ends MAME is strict about version matching; a ROM
To understand the hype, you have to look at the state of emulation in 2007.
Many arcade systems (like the Neo-Geo platform) require a system BIOS to run. Ensure files like neogeo.zip are placed directly in your standard ROMs directory alongside your games.