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Writing a patch in ASM *SOLVED*

Fella's, I have a game that requires a patch to run properly, there is a bug and I do not want to touch the original exe. After some googling I cant find much information on how to write one in ASM. EDIT: I want to patch the program in memory, its compressed. How do I go about this? (I am new to …

'copy' command overwrites original

Can anyone confirm/reproduces this ? I wanted to copy a file in dosbox, instead of pressing shift I hit the enter key resulting in a malformed command. This should result in a syntax error but it does not: (it destroys the file in the process) C:\>copy UNP412B.EXE UNP412B.EXE 1 File(s) copied. C::\> …

Re: Copy protection removal software for DOS games

in DOS
You can definitely still send me a PM. I just can't reply. So, go ahead! We are sorry, but you are not authorised to use this feature. You may have just registered here and may need to participate more to be able to use this feature. As soon as this is lifted, I'll drop you a PM. @newrisingsun: I …

Re: Copy Protection & Image Formats

Going to do a bit more testing on that game (Ultima IV) and see if I can figure out what is going wrong (eventually.) It results in a "packed file is corrupt" error message. That is the result of Origin applying an older version of Microsoft EXEPACK to AVATAR.EXE. Normally, the ideal solution would …

Re: Preistorik 2 demo

It has the expected anti-debugger tactic of prefetch tricks, but for some reason cputype=386_prefetch is not enough to get it running. I'll investigate that later. For now, I've attached the demo's executable with the protection wrapper removed, which DOSBox and other systems will find easier to …

Re: Knight Force copy protection

in Milliways
Eric Zmiro wrote a loader for his own games, I think its on a bundled release from Titus in 1995 iirc. You can use it load all the encrypted executables from Titus. My guess: if you imgmount this CD you can load your game from disk or harddisk. Although you might probably need to mount your floppy …

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