Subject: Re: [stella] copy protect idea From: Thomas Jentzsch <tjentzsch@xxxxxx> Date: Sat, 2 Feb 2002 10:01:30 +0100 |
At 02.02.2002, 04:33, Mark De Smet wrote: >> For now, you could also just use a different bankswitching algorithm >> (e.g. Parker, TigerVision), because nobody seems to be able to make >> boards for copies of Lord of the Rings. > Simpler yet, just make up your own bank switching, and implement it in a > programmable logic device. This way anyone who takes the cart apart > cannot figure out what logic is implemented. A potential dumper would > have to download the direct 4k, then dissasemble to figure out. I am > skeptical that anyone would go to this much work, especially as it would > be a heck of a lot of work to re-write to use a different bankswitch > method to be able to run on an emulator anyway. IIRC, there are two things Manuel wants: 1. protect your games against simple graphic hacks 2. allow people to play your game on an emulator but not on the real thing without a cart (no SuperCharger or Cuttle Cart) So, with a special bankswitching algorithm, you need support from the emulator programmers. And there is no hacking protection too. > I guess I missed it, but why are we on this thread anyway? I have never > found the binaries of a home-brew game anyway.(games that were only > released in cart form). For instance merlins walls. I think everyone who > purchases a home brew respects the author enought not to download and > distribute. Unfortunately that's not true for Merlins Walls. There binary is already floating around the web. BTW: What about a hacking contest? We could use an existing 4K homebrew (source available) which has some bytes of RAM and ROM free. The best protection would be the one that uses a minimum of resources and gives the maximum of protection. Have fun! Thomas _______________________________________________________ Thomas Jentzsch | *** Every bit is sacred ! *** tjentzsch at web dot de | ---------------------------------------------------------------------------------------------- Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/
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