Spiradisc
id:
spiradisc-217-32153
title:
Spiradisc
text:
Spiradisc was a copy protection scheme used by Sierra On-Line on their floppy disk releases for the Apple II.
The technique, developed by Mark Duchaineau, involved writing the data on spiralling paths on the disk rather than in concentric circles. Initially, no commercial copying software or bit nibbler could successfully copy the disks it was applied to. Games which used Spiradisc copy protection include Lunar Leepers, Frogger, some very early versions of Ultima II, Jawbreaker, Maze Craze Const
brand slug:
wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Spiradisc
date created:
2012-10-05T15:40:58Z
date modified:
2024-09-12T22:14:30Z
main entity:
{"identifier":"Q7577704","url":"https://www.wikidata.org/entity/Q7577704"}
image:
fields total:
13
integrity:
14