Okay, I probably should have been more specific - they might take up more memory, but you generally need less of them to do the same thing in RISC, so that usua

Okay, I probably should have been more specific - they might take up more memory, but you generally need less of them to do the same thing in RISC, so that usually more than compensates. Instruction decode isn't really difficult - 4-way decode could arguably be called difficult, but there's not much of that.