[Program and graphics]
 2001, by Paul Reuvers. This program is written in BBC BASIC on an Acorn RISC PC and compiled with the ABC compiler.
[Sound samples]
The Enigma sound samples used in this program are  Jim Oram and 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.

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