[Program and graphics]
 Paul Reuvers. Written in BBC BASIC and compiled with the ABC compiler.
[PlayIt sound player]
 Rick Hudson
[DataPlayer sound player]
 John Duffell
[Sound samples]
 Jim Oram. The Enigma sound samples used in this program a were recorded from a real Enigma M4 device.
[Rotor wiring and advice]
Thanks are due to David Hamer of the CSG for advice on rotor wiring and some real decodes to test the simulator against.
