From: Cameron Kaiser (spectre_at_floodgap.com)
Date: 2006-08-28 03:29:46
> > Dongles have a capacitor and transistor across several of the lines, so
> > that a signal output on one line that will appear a short tome later
> > (determined by the capacitor) on a different line (determined by the
> > transistor). The actual lines are different for each dongle.
>
> The dongle for the Leaderboard golf game really only consists of a
> card edge connector and a resistor connected across two lines. I'd
> assume that the lines are SENSE and GND, but it was 20 years ago.
>
> I have one dongle, used by a compiled BASIC program on the PET.
> I removed the protection with the help of VICE. It wasn't trivial,
> because the compiled BASIC code was a mess. Also, the program computed
> a checksum over itself. Anyway, I succeeded, and I got the PET, printer
> and disk drive for my effort. The company now uses the program on a PC
> running VICE.
I'm curious -- what was the nature of the program? They sure wanted to
get it running quite badly, it sounds.
--
--------------------------------- personal: http://www.armory.com/~spectre/ ---
Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser@floodgap.com
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