The ATX form AT mainboard project using an 80286 CPU operating at 20MHz is fully functional, designed for historical and educational purposes. It requires expertise in building and troubleshooting hardware. Users are cautioned about the lack of guarantees for functionality or fitness for specific purposes. The project entails complex CPU timing and data translation mechanisms, with contributors acknowledged for their valuable input. The design process involved reverse engineering and the utilization of programmable logic to enhance efficiency. The project aims to replicate the innovative technology that enabled the 16-bit AT PC to achieve 100% compatibility with 8-bit hardware and software. Controversial information includes the potential loss of data and the disclaimer against serious applications.
https://github.com/rodneyknaap/atx-286at-v1-mainboard