07-02-2013, 06:45 PM
Yeah, I did notice that Whiteley's adder is pretty huge, 15 blocks tall is a bit ridiculous. I don't think a 2 tick instant-carry adder is possible because it would have to generate the carry in 1 tick, but if it is possible I would love to see your design! I'm actually continuing work on mine, I think it's finished. It uses a 2 tick half adder I designed myself that supports instant-carry and a 1 tick XOR designed by Properinglish19, I'll try to put it up on my plot later today. It's only 7 blocks tall, but it's about 26 blocks long, so it's still pretty big. However, generating any 8 bit result in 3 ticks is pretty damn impressive.