*[https://www.grimware.org/doku.php/documentations/devices/z80 Z80 documentation from Grimware]
*[https://floooh.github.io/2021/12/06/z80-instruction-timing.html Detailed look at Z80 instruction timings with the help of a Z80 netlist simulation]
*[http://www.z80.info/decoding.htm Decoding Z80 opcodes]
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