A discussion about any full MAME set is not complete without mentioning files. CHD stands for Compressed Hunks of Data and is a lossless compression format originally developed specifically for MAME.
A complete MAME 2014 reference set is split into two distinct types of files. Understanding the difference is vital for a successful setup. mame 2014 reference set mame 0159 roms chds top
(e.g., /RetroPie/roms/mame-libretro/ or C:/MAME/roms/ ). A discussion about any full MAME set is
The MAME 2014 reference set corresponds to MAME version (released 2014). It’s a curated snapshot used for preserving and emulating arcade software as it existed for that MAME release. The set typically includes ROM images and optional CHD (Compressed Hunks of Data) files for large media (CDs, hard-drive games). mame 2014 reference set mame 0159 roms chds top