This first fascicle will eventually be incorporated into the fourth edition of The Art of Computer Programming, Volume 1, Third Edition: Fundamental Algorithms.
It defines the MMIX assembly language and gives a programmer's introduction to the long-awaited MMIX, a RISC-based computer that succeeds the original MIX. New information on subroutines, coroutines, and interpretative routines is also presented in the fascicle.
