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 * email@example.com -- I can't type any long sentiments in this .sig file because it's not wide enou Message was sent through the cbm-hackers mailing list
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