Intel's docs. Huge and comprehensive: http://www.intel.com/products/processor/manuals/ http://www.intel.com/products/processor/manuals/ NASM docs: http://ww

Intel's docs. Huge and comprehensive: http://www.intel.com/products/processor/manuals/ http://www.intel.com/products/processor/manuals/ NASM docs: http://www.linuxmedialabs.com/nasm/html/nasmdoca.html http://www.linuxmedialabs.com/nasm/html/nasmdoca.html