After several years of winter sleep, the ACP project was finally reanimated by Fredi Aschwanden and Mathias Wittau. Since last December, Mathias is contacting a lot of Atari developers and tried to figure out if this project is still feasible in 2009.
In fact, the response was overwhelming so that Fredi immediately started working on the design and PCB layout.
In the meanwhile, several technical details have become available at the website http://acp.atari.org. I think that this development is pretty intriguing for Atari demo scene. The project not only tries to achieve high compatibility with the original Atari by including many original Atari connectors but it will feature a big FPGA allowing the implementation of custom hardware features. Since this project will be open source, everyone will be able to create custom hardware components. As I know, there is already work in progress to implement a DSP56k inside the FPGA. So this could be a cool and challenging platform for creating demos for.