In light of the game firetrack and wanting to offer a solder/cable less expansion for the BBC Model B I have started this project.
The target it to have a board that replaced the CPU.
Here is what I thinking to include. In pri order.
1)Shadows RAM as in B+
2)8 banks of sideways flash
3)IDE/Flash interface
4)Internal Tube
5)Micro SD interface
6)Flashable
7)MOS switch
8)WiFi?? Need a serial port.