I have come across a very interesting article, which discusses copy protection in Jet Set Willy in a truly academic manner. It is called
Copy Protection in Jet Set Willy: developing methodology for retrogame archaeology
and it was written by John Aycock from the Department of Computer Science, University of Calgary, Canada, and by Andrew Reinhard from Archaeogaming.
You can read it here. It's amazing .
Edited by jetsetdanny, 10 March 2018 - 07:37 PM.