If using LaunchBox with a MAME emulator, the naomi.zip should be placed alongside your ROM files, or inside your MAME ROMs directory, acting as a ROM dependency. Troubleshooting Common Naomi.zip Errors
2021 saw continued improvements in NAOMI emulation through the in RetroArch, resulting in better compatibility and performance. naomizip 2021
The naomi.zip file is the or firmware for the Sega NAOMI arcade system. Emulators need this file to mimic the original hardware, allowing the software to start. Without it, emulators like Flycast will display a "BIOS file not found" or "naomi.zip missing" error. If using LaunchBox with a MAME emulator, the naomi
Naomizip 2021: The Essential Guide to Sega NAOMI Emulation and BIOS Setup or inside your MAME ROMs directory
The Flycast core became the go-to for NAOMI/Atomiswave/Dreamcast emulation, often outperforming older methods.