Documentation
From Free60 Project
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Some Random Information
I met someone on the IRC the other day who told me the following:
- The flash is encrypted with a per-box key
- The key is stored inside the CPU
- The boot ROM is stored inside the CPU
- Also inside the CPU is a hypervisor that verifies the running state of the kernel, making sure there is no modification (RAM checksums), else the Xbox360 panics and blows up!
- The CPU contains RAM inside of it to store the checksums (This is just a speculation by TheSpecialist at the Xbox-Scene Forums (http://forums.xbox-scene.com/index.php?s=&showtopic=460842&view=findpost&p=3057332))
- All interrupt/exception handling is done by the hypervisor
- All code runs in kernel mode
- The emulator for first generation games can be updated via an official Microsoft download burned to CD by the user, though the CDs' content will be encrypted and signed with public key cryptography.
More technical details on the processor can be found here (http://www-128.ibm.com/developerworks/power/library/pa-fpfxbox/?ca=dgr-lnxw09XBoxDesign) (IBM Source).
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Teardowns in Progress
Microsoft Patents for the 360
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