*[http://www.z80.info/z80cs.htm Computer Systems based on Z80 Family]
*[http://en.wikipedia.org/wiki/Z80 The Z80 processor on Wikipedia]
*[https://sinclair.wiki.zxnet.co.uk/wiki/Z80 Z80 article on Sinclair Wiki]
*[https://www.grimware.org/doku.php/documentations/devices/z80 Z80 documentation from Grimware]
*[http://www.z80.info/decoding.htm Decoding Z80 opcodes]