refraction
PCSX2 Coder
just had a read, 157 pages of bliss! explains all concepts and optimisations of emulators, from the basics all the way up to dynamic recompilers and binary translation!! truely brilliant! enjoy 
http://people.ac.upc.es/vmoya/docs/emuprog.pdf
http://people.ac.upc.es/vmoya/docs/emuprog.pdf