MAME is an open-source project that is constantly updated. In fact, it is updated almost every month. While these updates add support for new games and fix bugs, they also change how the emulator reads game files (ROMs).
While newer MAME versions prioritize cycle-accurate emulation—which requires significant processing power—MAME 0.72 belongs to an era where speed was prioritized over absolute precision. This makes it a "gold standard" for specific platforms: 1. The Foundation of "MAME4all" mame 072 roms
To understand the ROMs, you have to understand the emulator version. MAME is an open-source project that is constantly updated