Why the need for mod chips?

blackbox_dev · Post by **blackbox_dev** » Sun Mar 12, 2006 1:04 pm

OK, I know what a mod chip is and what it does but why would you need one? If you copy a game (for a backup, nothing illegal) wouldn't the other disk be identical? What is the difference between the two disks that make one unloadable without a mod chip?

S q u e e ! · Post by **S q u e e !** » Sun Mar 12, 2006 1:16 pm

Because IIRC, there is something about the ISO that renders in unreadable after being burned onto a standard DVD-ROM.

**EDIT**

Actually, I think the mod chip opens the compressed audio/video files on the disc (which have to be compressed to fit on a DVD-ROM).

vb_master · Post by **vb_master** » Sun Mar 12, 2006 1:55 pm

iam7805 wrote:OK, I know what a mod chip is and what it does but why would you need one? If you copy a game (for a backup, nothing illegal) wouldn't the other disk be identical? What is the difference between the two disks that make one unloadable without a mod chip?

It circumvents copy protection, disables the check to see if the code is signed (such as on the Xbox).

blackbox_dev · Post by **blackbox_dev** » Sun Mar 12, 2006 2:00 pm

yeah, but how does the code become "unsigned" so to speak when you copy the disk?

Harshboy · Post by **Harshboy** » Sun Mar 12, 2006 2:02 pm

the little bar-codes on the DVD, its just in there, whether you can see it or not. and xbox backups are called xisos

vb_master · Post by **vb_master** » Sun Mar 12, 2006 2:07 pm

Harshboy wrote:the little bar-codes on the DVD, its just in there, whether you can see it or not. and xbox backups are called xisos

No, the barcode is only for GameCube.

Harshboy · Post by **Harshboy** » Sun Mar 12, 2006 2:08 pm

Actually DVD burner, but yes. To back-up you need to insert the original in the Xbox, FTP to it, rip to PC, make it an xISO, and burn it...it takes a long time to back stuff up for xbox

vb_master · Post by **vb_master** » Sun Mar 12, 2006 2:11 pm

Harshboy wrote:Actually DVD burner, but yes. To back-up you need to insert the original in the Xbox, FTP to it, rip to PC, make it an xISO, and burn it...it takes a long time to back stuff up for xbox

Thank you. This thread is in the gray area of legality, so I don't think we should be continuing this discussion, ok?

blackbox_dev · Post by **blackbox_dev** » Sun Mar 12, 2006 8:08 pm

yeah, im pretty sure I understand now

hack124x768 · Post by **hack124x768** » Wed May 17, 2006 7:05 pm

The signature on a ps1 disk is a specific string of bad blocks at the begining of the disk. A normal cd burner will refuse to burn these however, and will botch them up. Then the ps1 knows its a bogus disk because it has good blocks (that make no sense) at the start instead of the bad blocks. Theoreticly, if you used a stomper (like the factories do) you could get around this, but who can afford one of those?

vb_master · Post by **vb_master** » Wed May 17, 2006 7:11 pm

hack124x768 wrote:The signature on a ps1 disk is a specific string of bad blocks at the begining of the disk. A normal cd burner will refuse to burn these however, and will botch them up. Then the ps1 knows its a bogus disk because it has good blocks (that make no sense) at the start instead of the bad blocks. Theoreticly, if you used a stomper (like the factories do) you could get around this, but who can afford one of those?

Don't dig up dead threads.

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Why the need for mod chips?

Why the need for mod chips?

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