This is a WillFA7 FPGA Board which replaces Williams System 3-7 Cpu and Driverboard.

See my pictures - I installed one in my Williams 1978 Phoenix machine which works as the original Boards.

The Board is equiped with a cyclone 10 FPGA and already programmed - Just plug and play!

I had to order 5pcb min so I finalised the other 4 boards and sell them for Part-Price.