JAMMA

JAMMA stands for Japan Amusement Machinery Manufacturers Association, and is the groups that defined the standard connector known as a JAMMA harness for arcade pcbs.

The JAMMA wiring standard was introduced in 1985. Arcade cabinets wired to the JAMMA standard can be made to play all games built to this standard, simply by installing the circuit boards for the new game. By the 1990s, most new arcade games were JAMMA standard. As the majority of arcade games were designed in Japan at this time, JAMMA became the de facto world standard.