*[http://en.wikipedia.org/wiki/Z80 The Z80 processor on Wikipedia]
*[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]
== Opcodes ==