To set up ROMs for MAME 0.239, you need to match your ROM files to that specific version's database and place them in the correct directory. Quick Start Guide for MAME 0.239 Match Versions
C:\MAME (avoid spaces in paths).C:\MAME\
├── mame64.exe
├── roms\
├── artwork\
├── ini\
├── cfg\
├── nvram\
├── samples\
└── ...
mame64.exe once to generate the default mame.ini configuration file. Close MAME after it opens.(Compressed Hunks of Data). These require a slightly different folder structure: Keep the main ROM zip file in the new folder with the exact same name as that zip file. file inside that new sub-folder. 4. Refreshing the Game List mame 0239 roms install
roms. This is the default location.roms folder.