Some people might be wondering "huh, why number them in this weird way?!" It's because they were originally 3 volumes. volume 2 is the ASM reference, 3 is the

Some people might be wondering "huh, why number them in this weird way?!" It's because they were originally 3 volumes. volume 2 is the ASM reference, 3 is the "how to do things" reference (System programming guide). Volume 1 is more of a general reference so maybe that's why it didn't grow so much.