The No Starch Press book is really just the Nutshell book for HLA, a language of the author's invention that is a cross between x86 assembly and Pascal. This web site, on the other hand, appears to be the contents I was expecting to find in a book titled "The Art of Assembly Language".
Why oh why did the author give both of these very different creatures the same title?
http://nostarch.com/assembly2.htm