True - that obviously applies more to writing assembly then C, but of course this is an assembly project. Depending on your coding style though I'm not sure ho

True - that obviously applies more to writing assembly then C, but of course this is an assembly project. Depending on your coding style though I'm not sure how much it would really come into play - x86 is registered starved, but it also allowed memory addresses in lots of instructions, allowing you to avoid putting things into registers in the first place. You get twice the number of registers with x86-64, but his code doesn't really appear to be suffering for not having enough registers to begin with.