The author and this publication do not condone piracy. The distribution of copyrighted ROMs is illegal in many jurisdictions. You should only download ROMs for games you physically own the original arcade PCB for, or for software that has been explicitly released as freeware or into the public domain.
Clones only contain files that differ from the "Parent" ROM, which must also be present to play. Mame 0.240 Full Rom Set
This article dives deep into the specifics of MAME 0.240, its place in emulation history, the technical requirements for running it, and the ethical landscape surrounding ROM acquisition. The author and this publication do not condone piracy