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Old 28 July 2015, 00:27   #3
Going nowhere

Galahad/FLT's Avatar
Join Date: Oct 2001
Location: United Kingdom
Age: 44
Posts: 6,950
Originally Posted by dlfrsilver View Post
chips challenge use a codewheel, and no protection on disk from memory.
Not what he was asking Denis

This is a typical Quartex crack. Basically in the early days of Quartex when Rob was cracking for them, they didn't bother with flashy intros, they either just had a hacked "Cracked by Quartex" in the game so it would display onscreen somewhere, or, if the game had room on the disk, they would utilise a simple CLI text screen.

Basically the game is originally a non-dos disk, i.e. it has no AmigaDOS file structure, all of the game 'files' are written to tracks on the disk, all the original has is a Volume name, but no specific AmigaDOS accessible files.

What Rob has done is simple enough. He has taken the original boot file, compacted it, put his crack routine in there to bypass the copy protection, and then found some space on the disk where there are no game files, and he has probably messed around with the disks bitmap to force the files to be stored where they won't interfere with the game files that are hidden.

Once the 'run' file has depacked, it then uses a custom track loader to load the required hidden files that are not accessible to AmigaDOS.

So copying the 'run' boot file wouldn't be enough, as it would be trying to load tracks with the hidden data.

They did the same thing with Hybris, RoboCop to name two others, and likely did it to a load of other games as well.
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