The legality of Sega Naomi ROMs is a gray area, as it depends on the country and jurisdiction. In general, downloading ROMs of games that you don't own is considered copyright infringement. However, some argue that downloading ROMs for personal use, especially for games that are no longer commercially available, can be considered fair use.
: Optical discs that required a specialized "DIMM board" to load data into the system's RAM. Because many of these games utilized the Sega JVS (JAMMA Video Standard) sega naomi roms exclusive