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Crazyembereks

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Posts posted by Crazyembereks

  1. 11 hours ago, samspin said:

    I've thought about this, and while it is indeed possible to have multple Kernels on one TSOP, this does not mean different versions of the Xcodes can be used! Have a read here: https://www.eurasia.nu/modules.php?name=News&file=article&sid=183

    "The Xcode interpreter, which is stored in the MCPX ROM and cannot be changed, always reads its instructions from 0xFF00_0000, while all Xbox ROMs refer to the x86 code at 0xFFFC_0000. Therefore the Xcodes that get executed do not belong to the active image - actually the Xcodes from bank 0 get executed always, no matter what bank you select. If you have four very similar images, this might work, but very often it doesn't work! It was suggested to connect A18 and A19 resp. either to GND or to Vcc, to have definitive 1s and 0s, but we cannot recommend this either, because it is quite likely that this will make your MCPX explode!"

    In english, it recommends not to do this because having A18 and A19 connected to GND or Vcc applies voltage to the MCPX in a way that it was not intended for and it will get hotter than it should over time (explode is a bit of a drastic statement). So unless you add some resistors to the circuit or add cooling to the MCPX, don't try this! It will eventually fail and be very difficult to diagnose. Since the MCPX is a BGA-soldered component that cannot be easily replaced, it's far safer to just stick with modchips. That being said, using this kind of mod *temporarily* in order to recover an incomplete flash should be fine so long as you don't use it for too long.

    Very Interesting and good to know! After looking into this further, I found this tutorial which says he solved the problem by severing a trace to permanently split the banks and prevent overheating.

     

  2. 27 minutes ago, Crazyembereks said:

    Couldn't we just use the Hexen disc to reflash the TSOP instead of using a modchip? Or would the xbox just not turn on?

    Or if can't boot that, could also split the 1mb TSOP with a switch and have 2 banks in the TSOP. This way can avoid the modchip altogether? Would this work?

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