198
edits
Difference between revisions of "Freescape/DRM"
no edit summary
Neuromancer (talk | contribs) (Created page with "Certain Freescape games included DRM protections that ScummVM cannot bypass since the data needed for it is hidden in a physical track of the disk. In particular, the one used...") |
Neuromancer (talk | contribs) |
||
| Line 1: | Line 1: | ||
Certain Freescape games included DRM protections that ScummVM cannot bypass since the data needed for it is hidden in a physical track of the disk. In particular, the one used in some Amiga or AtariST releases is called [https://en.wikipedia.org/wiki/Rob_Northen_copylock CopyLock]. | Certain Freescape games included DRM protections that ScummVM cannot bypass since the data needed for it is hidden in a physical track of the disk. In particular, the one used in some Amiga or AtariST releases is called [https://en.wikipedia.org/wiki/Rob_Northen_copylock CopyLock]. | ||
The first step for all the encrypted release is to dump the disk into a suitable format. This can be either ipf for Amiga or stx for AtariST releases. Other types of images could be supported, but they should retain all the track information, otherwise, it will be impossible to decrypt the data (for instance, adf for Amiga lacks of that information and therefore, cannot be used). This process is only needed for the 0.drk or the 0.tec file depending on the game. ScummVM will finish the decryption process once the CopyLock protection is removed. | The first step for all the encrypted release is to dump the disk into a suitable format. This can be either ipf for Amiga or stx for AtariST releases. Other types of images could be supported, but they should retain all the track information, otherwise, it will be impossible to decrypt the data (for instance, the adf format for Amiga lacks of that information and therefore, cannot be used). This process is only needed for the 0.drk or the 0.tec file depending on the game. ScummVM will finish the decryption process once the CopyLock protection is removed. You can easily verify if CopyLock is used checking the result of the following command matches: | ||
$ strings FILE | grep Rob | |||
Protection (C)1989 Rob Northen Computing. All Rights Reserved. | |||
==Amiga releases== | ==Amiga releases== | ||
In case of having the Amiga release with | In case of having the Amiga release with CopyLock (e.g. the Dark Side one from MicroStatus), follow [https://github.com/keirf/disk-utilities/blob/master/amiga/cracks/dark_side/Makefile the instructions here] to dump and decrypt your game data. The script will use directly the disk data to decrypt the file. | ||
==AtariST releases== | ==AtariST releases== | ||
In case of having an AtariST release with | In case of having an AtariST release with CopyLock (e.g. the Dark Side one from MicroStatus), use dec0de to decrypt game. | ||
1. Clone/Download [https://github.com/orionfuzion/dec0de the dec0de repository]. There is no need to compile anything since it already contains AtariST binaries ready to use. | 1. Clone/Download [https://github.com/orionfuzion/dec0de the dec0de repository]. There is no need to compile anything since it already contains AtariST binaries ready to use. | ||