It is more than a decade old but still the best reference around [Wayback/Archive] -= pnx.tf =- has [Wayback] x86_opcode_structure_and_instruction_overview.pdf
I found it via [Wayback/Archive] Alice Climent-Pommeret on Twitter: “I’ve just discovered this amazing document showing super clearly the relation between the opcode and the instruction 🤯 …”





