Cracking Tutorial: Carrier Command - Page 3

redblade · 16 March 2010, 10:26

How do you read MFM tracks via C-Monitor/AmigaMonitor? Do do you just trace the bootblock, and save memory when it is loaded and skip the hits that Disables DMA? Does the system have to be in _LVOForbid or _LVOSupervisor first?.

More interested in doing it the late 80s C-Monitor way then with a Action Replay.

StingRay · 16 March 2010, 10:46

Quote:

Originally Posted by redblade

How do you read MFM tracks via C-Monitor/AmigaMonitor?

Read the bootblock, disassemble it, find out what it does (most probably will just load the custom loader), save the loader, adapt it and use it to read the tracks. That should be enough to get you going.

pmc · 16 March 2010, 12:19

I must admit I never really understood how cracking was done but I've been reading and playing with disk stuff recently while I've been writing my own trackloader and it's becoming clear that the bootblock is the "key" to unlock the door on most of this stuff.

Galahad's tutorial was interesting reading.

Personally cracking is of academic interest only to me.

There was a time though when there would've been a proper thrill in doing this stuff - getting that original just released game, cracked, packed, tagged with a cracktro and spread ahead of any of the other guys would've been a real buzz way back when I reckon.

Funny that a practice that was held up as killing Amiga software has, in the end, been responsible for lots of it being preserved.

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16 March 2010, 10:26	#41
redblade Zone Friend Join Date: Mar 2004 Location: Middle Earth Age: 40 Posts: 2,127	How do you read MFM tracks via C-Monitor/AmigaMonitor? Do do you just trace the bootblock, and save memory when it is loaded and skip the hits that Disables DMA? Does the system have to be in _LVOForbid or _LVOSupervisor first?. More interested in doing it the late 80s C-Monitor way then with a Action Replay.

16 March 2010, 12:19	#43
pmc gone Join Date: Apr 2007 Location: completely gone Posts: 1,596	I must admit I never really understood how cracking was done but I've been reading and playing with disk stuff recently while I've been writing my own trackloader and it's becoming clear that the bootblock is the "key" to unlock the door on most of this stuff. Galahad's tutorial was interesting reading. Personally cracking is of academic interest only to me. There was a time though when there would've been a proper thrill in doing this stuff - getting that original just released game, cracked, packed, tagged with a cracktro and spread ahead of any of the other guys would've been a real buzz way back when I reckon. Funny that a practice that was held up as killing Amiga software has, in the end, been responsible for lots of it being preserved.

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