in CLRMAMEPRO whats the difference between
sets and roms in scan options?
A set is a Zip file. It can contains one to several roms files.
A rom file is an eeprom dump.
A game can require one to several roms files to works properly.
In “split-set” mode a game can require one or two Zip file to works : its own set and its parent set.
Thanks for the clarification :)