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PlayStation 2 (CD-ROM, DVD-ROM) A map file that contains all of the exact positions and file size info of the disc is stored at a position that is beyond the file limit. The game calls this place directly so that burned copy with no data beyond file limit cannot be played. PSP (Universal Media Disc)
A protected program can check whether the CD-ROM is original by positioning the drive behind sector 6553 and then reading from it — expecting the Mary version to appear. When a program tries to copy such a CD-ROM, it will miss the twin-sector as the drive skips the second 6553-sector, seeking for sector 6554.
Similar to modchips, the legality of these methods is disputed.While they are often advertised for their ability to make legal backups and to be used to play legal homebrew software [2] and are considered a cheap method of development compared to purchasing official development kits, a backup device's potential for software piracy is a major concern to hardware and software manufacturers.
These games were distributed on 5 + 1 ⁄ 4" or, later, 3 + 1 ⁄ 2", floppy disks that booted directly, meaning once they were inserted in the drive and the computer was turned on, a minimal, custom operating system on the diskette took over. This was used as a form of copy protection [citation needed] until it
SecuROM is a CD/DVD copy protection and digital rights management (DRM) system developed by Sony DADC and introduced in 1998. [1]: 11 It aims to prevent unauthorised copying and reverse engineering of software, primarily commercial computer games running on Windows.
The device adds a CD-ROM drive to the console, allowing the user to play CD-based games and providing additional hardware functionality. It can also play audio CDs and CD+G discs. While the add-on did contain a faster central processing unit than the Genesis, as well as some enhanced graphics capabilities, the main focus of the device was to ...
One major drawback to these copy-protected discs is that most will not play on either computer CD-ROM drives or some standalone CD players that use CD-ROM mechanisms. Philips has stated that such discs are not permitted to bear the trademarked Compact Disc Digital Audio logo because they violate the Red Book specifications.
Intelligent Systems ROM burner for the Nintendo DS. A ROM image, or ROM file, is a computer file which contains a copy of the data from a read-only memory chip, often from a video game cartridge, or used to contain a computer's firmware, or from an arcade game's main board.