[andsmi2]

This was a fascinating read. Somewhere in the late 80s/early 90s I picked up a floppy with a guide to cracking at a local computer store. I was then able to crack a few games with help of turbo debugger and Norton disk editor (file editor?) -- I mostly remember looking for int 16 (ah 02?) and then replacing the next few lines with nop's or changing jni to jmp -- I knew little of what I was doing but it was a blast. I was aware of certain protection that read bad sectors on a disk but if you did an exact floppy copy you could usually copy bad sectors-- different than this article. I do remember spending a few days on my cousins copy of altered beast and being very confused by it. I think it decrypted the game from disk or u compressed from disk into me,Roy so I could see the code I wanted to change in the debugger but not on the disk. This may have led to a failed attempt at a TSR to alter the code during runtime. I thi I i e eventually gave up. I also remember finding bible verses in the caveman ugh-lympics dump I think. Fond memories.

[andsmi2]

I think this or part of this is what was on that shareware disk I got at the computer fair http://www.textfiles.com/piracy/CRACKING/act-13.txt the Buckaroo Bonzai Cracking the IBM PC sounds real familiar.

[bigbugbag]

you may want to read "Technical Documentation - Detailed analysis of the Dungeon Master and Chaos Strikes Back for Atari ST Floppy Disks" too then http://dmweb.free.fr/?q=node/1429

note the PDF at the bottom of the page.