Thats not possible no matter what you do because a PC and Xbox are far more different than what you'd initially think. HINTS: the XBox's PIC is totally different from that of a PCs, the NV2A's MMIO addresses are completly different from an NV20 (GeForce 3), the MCP-X is not like an ordinary MCP, and the Xbox's modified version of the AC97 is not 100% compatible with a PC's. The hardware is the same, but just too different.building x-box from "normal" pc components
First of all your I doubt your friend made any emulator. Secondly, not all CPU's are Celeron or Pentium based. You really have no idea what your talking about do you?A friend of mine did create an emulator that does work by breaking open an Xbox and deciphering the components. Another possible way to figure out the specs (for the processor at least) is to mod it to run Linux and see what kind of specs the OS detects the hardware as. You should at least be able to tell whether the CPU is a Celeron or a Pentium based on the size of the L2 cache.