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59 bytes added ,  21:25, 30 March 2015
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==PDN_TWLMODE==
 
==PDN_TWLMODE==
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Set to 0x8001 when running under TWL_FIRM, 0 NATIVE_FIRM.
 +
 
The very last 3DS-mode register poke the [[FIRM|TWL_FIRM]] Process9 does before it gets switched into TWL-mode, is writing 0x8000 to this register. Before writing this register, TWL Process9 waits for the value of this register to become non-zero. The Process9 code for this runs from ITCM, since switching into TWL-mode includes remapping all ARM9 physical memory.
 
The very last 3DS-mode register poke the [[FIRM|TWL_FIRM]] Process9 does before it gets switched into TWL-mode, is writing 0x8000 to this register. Before writing this register, TWL Process9 waits for the value of this register to become non-zero. The Process9 code for this runs from ITCM, since switching into TWL-mode includes remapping all ARM9 physical memory.
  

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