Does the tutorial cover MMX or SSE instructions?
No, it doesn’t and probably never will. I don’t know how to use these newer instructions. I’m not a real assembly programmer. The tutorial is meant to be an introduction to assembly for C/C++ programmers like myself. I try to stress the ideas from assembly that I use all the time in my C/C++ programming. I do not really see any great advantage to adding another chapter covering these instructions. After finishing my tutorial, it shouldn’t be too difficult to learn how to use these newer instructions from other sources.