Thursday, May 7, 2026

Adapting Apple's RGB Color Monitor for Analogue & MiSTer

While the Apple IIgs could connect to a composite display, Apple released a high-quality color RGB monitor specifically designed for the IIgs. This monitor was called the Apple Color RGB Monitor, A2M6014. It was the only color monitor Apple ever released which could accept full analog RGB video signals at the standard 240p/480i resolution (using a 15.7KHz horizontal line frequency). I have recently acquired a full Apple IIgs setup, and while the IIgs needs some repair to its mainboard the monitor works. Even though this monitor has a connector only used by Apple, with a converter it is possible to use it with a variety of game consoles. In this short blog article I will detail how I got it working with my Analogue consoles and MiSTer.