TL;DR: a detailed look at Z80 instruction timings with the help of a Z80 netlist simulation. Table of Content Table of Content Intro The shape of Z80 instructions General Instruction Timing M-cycles and T-states Opcode Fetch Machine Cycles Memory Read Machine Cycles Memory Write Machine Cycles IO Read and Write Machine Cycles Wait states Extra Clock Cycles Overlapped Execution The 3 Instruction Subsets The 2-3-3 Opcode Bit Pattern Main Instructions Main Quadrant 1 (xx = 01) Main Quadrant 2 (xx =...