Essentially, the MCPX Boot ROM was the root of trust for the entire console. Microsoft believed that if the code was buried inside the chip, hackers couldn’t change it, making the system unbreakable.
| MCPX Version | SHA256 (first 4KB) | |--------------|--------------------| | Xenon (Zephyr) | 7A3F...C1D2 (trunc) | | Falcon | E84B...A12F | | Jasper | 2C6D...9ABE |
: Initializes the chipset, sets up the Global Descriptor Table (GDT), and turns on the CPU caches. The "Jam Tables"
Essentially, the MCPX Boot ROM was the root of trust for the entire console. Microsoft believed that if the code was buried inside the chip, hackers couldn’t change it, making the system unbreakable.
| MCPX Version | SHA256 (first 4KB) | |--------------|--------------------| | Xenon (Zephyr) | 7A3F...C1D2 (trunc) | | Falcon | E84B...A12F | | Jasper | 2C6D...9ABE |
: Initializes the chipset, sets up the Global Descriptor Table (GDT), and turns on the CPU caches. The "Jam Tables"
