Hi!
On 26-Sep-00, Marko Mäkelä wrote:
>This brings a question to my mind. What kinds of copy protection were
>used on the PET? Were ROM chips and cassette port dongles the only ways,
>or were disk errors used as well?
KMMM Pascal used a dongle. It's been so long since I wrote the code that
checks the dongle that I forget exactly how I did it. I do remember that I
let the compiler run normally but passed information to the executable that
caused the executable to remove itself from memory, instead of running.
I'll not forget the day I got a phone call from a nervy individual asking
me how the copy protection worked.
Willi
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