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First post, by siddhartha

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I'm currently working on a project where I am going through my retro game library and making "clean cracks" for games that require a document check.

The idea is to completely bypass a document check that appears each time the game is loaded so that the check prompt does not even display. Document checks in the middle of games (the King's Quest series come to mind) aren't touched because I consider that a part of gameplay.

Many are just simple byte patches or SCI patch files, but some require more complicated TSRs that modify the game code in memory.

This is all mainly for my own amusement, but also to teach my son basic assembly. I've been considering setting up a GitHub page with tutorials that go through each game as a programming exercise. Is there an appetite for this? Should it ever be linked on this site? Is it even legal?

Reply 1 of 2, by krcroft

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I think this is very valuable information both for the preservation of this (increasingly) lost art as well as to gain historic insight into the software protection mechanisms themselves, and how they evolved over time. My understanding is that performing, documenting, and teaching these actions is legal.

Reply 2 of 2, by shan2752

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The WHDLoad project for the Commodore Amiga has been doing this for years. They remove the protection and also allow the game to be run from a hard drive. They also add other improvements like bug fixes and trainers.

http://whdload.de/