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From: yorkw@stable.ecn.purdue.edu (Willis F York)
Newsgroups: comp.sys.cbm
Subject: Re: Super Snap Shot Cart Detection??
Message-ID: <1990Sep26.034815.13815@ecn.purdue.edu>
Date: 26 Sep 90 03:48:15 GMT
References: <+VJ%*-+@rpi.edu> <1990Sep24.162347.24968@jarvis.csri.toronto.edu> <449@news.nd.edu>
Sender: news@ecn.purdue.edu (USENET news)
Organization: Purdue University Engineering Computer Network
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>
>I have heard rumors of really killer copy protection routines thaat use
>the video chip as a sync rigistar.  If a program is Snapshotted and then
>loaded, the video chip's timming will be off from the programs internal
>time keeping routines, and thus the copy is detected.  I have never seen
>code that could really pull this off, but I have heard about it being done.

Well All this Babbling about making a Program Pirate Proof, 
Here's What ya Do.

Have the Program read Data files offa the Disk as it needs them,
(at each level ect..) and have it Chewck COPY protection (Disk based)
(Or my favorite manual) each time, thus ya snap Shot the prog Fine, 

Wait till it needs the next level,Sound,screen,ect...

there ya Happy, now ya can Defeat ONE use of the SS cartridge.

This is the reason i havent Bought a SS cart "Thingie" for 
my amiga, The games often Check Prot Several times/or use
files. (If they just checked ONCE the Device Sould Work Fine..)

Well Just My babbling to Counter your Babbling...
.

--
yorkw@stable.ecn.purdue.edu  Willis F York    

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