Sharing or linking to ROM sets for games you don't own the original arcade boards for is , even if the emulator is open-source. MAME 0.217 is a specific older version (from late 2019), and distributing ROMs for it would typically violate copyright laws.

MAME 0.217 is a notable version of the arcade emulator, released in December 2019

: Certain hardware (like Neo Geo) requires a separate BIOS file to be placed in the folder alongside the game. CHDs (Compressed Hunks of Data)

One of the most exciting aspects of MAME 0.217 was the visible progress on systems that have long been the "white whales" of emulation.

) require CHD files, which must be placed in specific subfolders within your directory. Device ROMs