Well.... I have six of the modules completed! The Registers Module is next on the assembly list. It is pretty straight forward assembly and is based mostly on the ALU module from the 4-Bit Architecture Experiments project. I removed the ALU portions from the board and replaced them with a 4-bit latch to hold the resulting arithmetic flags from the Mega-One-8-One ALU. The ALU portion of this project is the most tedious to assemble. The last prototype I assembled took three evenings to complete. There is nothing complicated about the board, there are just a LOT of components that need to be correct....