These are the small files containing the data dumped from the arcade machine's silicon chips (PROMs, EPROMs). These handle the game logic, sprites, and basic sound. A full 0.159 ROM set typically includes thousands of games but is relatively small in disk space compared to the media-heavy titles. 2. The CHDs (Compressed Hunks of Data)
It supports many 90s-era games that the older 2003 sets struggle with. mame 2014 reference set mame 0159 roms chds top
The Ultimate Guide to the MAME 2014 Reference Set (MAME 0.159) These are the small files containing the data