CP System
The architecture of MAME has been extensively improved over the years. Support for both raster and vector displays, as well as multiple CPUs and sound chips, were added to MAME in the first six months of the project. A flexible timer system to coordinate the synchronization between multiple emulated CPU cores was implemented, and ROM images started to be loaded according to their CRC32 hash in the ZIP files they were stored in. MAME has pioneered the reverse engineering of many undocumented system architectures, various CPUs (such as the M6809-derivative custom Konami CPU with new instructions) and sound chips (for example the Yamaha FM sound chips), and MAME developers have been instrumental in the reverse engineering of many proprietary encryption algorithms utilized in arcade games. Examples of these include the Neo Geo, CP System II, CP System III and many others.