Whether you are curating a small collection of arcade favorites for a Raspberry Pi or building a massive archive for posterity, always match the emulator version to the ROMset version, and strive for the convenience of Full Non-Merged ROMs to sidestep the complex management of BIOS and parent files.
Accessing and using ROM sets with MAME 2003+ requires an understanding of the legal and technical aspects of emulation. While MAME and related communities provide guidance on obtaining ROMs, users must ensure they comply with copyright laws and only use ROMs for which they have the rights to use. mame 2003plus reference link full nonmerged romsets