[tonyRobinson]

Yes, I did consider implementing a simpler processor that ran a bit sliced ALU. I decided against it because registers are needed to see how the processor works (how it fetches and stores instructions, how the PC controls flow, how you can read in and out of memory using registers, how the ALU operates on registers). The original designs used a 1 bit ALU, then I decided that this wasn't intuitive, it would be a better learning experience and not many more transistors to have a 16 bit ALU.