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Add info about config and boot args
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== Updates ==
 
== Updates ==
 
If an update is available for the Wii U, the Wii Mode will be disabled until the update is done, while IOSU255 runs.
 
If an update is available for the Wii U, the Wii Mode will be disabled until the update is done, while IOSU255 runs.
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== Config reflection ==
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To avoid having to configure settings in both Wii U and Wii mode separately, wii settings have been disabled and several settings from CafeOS are applied in WiiMode.<br>
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When launching CMPT mode the MCP writes a 0x4E8 byte structure to "/shared2/sys/compat/conf.bin" and sets the "wii_acct.internal.reflection" flag. This structure contains settings for Audio/Video, paired Wii Motes, parental controls, and general settings. The network configuration is directly written to "/shared2/sys/net/02/config.dat"<br>
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Once booted into WiiMode this structure will be parsed by the Wii System Menu or the [[COMPAT-BS]] and the settings will be applied to the [https://wiibrew.org/wiki//shared2/sys/SYSCONF SYSCONF].
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After returning back to CafeOS, [https://wiiubrew.org/wiki//dev/usr_cfg#Wii2Cafe Wii2Cafe] parses changes made in WiiMode.
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== Boot arguments ==
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The following boot arguments are written by the MCP to "/shared2/sys/compat/args.bin".<br>
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They are read and parsed by the Wii System Menu. [[COMPAT-BS]] reads the file and verifies the magic, but ignores all arguments.
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{| class="wikitable"
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|-
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! Start
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! Length
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! Description
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|-
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| 0x00
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| 4
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| Magic value: "WiiU"
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|-
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| 0x04
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| 4
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| Launch target<br>0x00: System Menu<br>0x01: System setup<br>0x02: Data management<br>0x10: Specified Title ID
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|-
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| 0x08
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| 8
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| Title ID
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|-
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| 0x10
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| 0x70
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| Reserved
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|}
    
== See also ==
 
== See also ==
 
* [https://wiibrew.org/wiki/vWii vWii on WiiBrew]
 
* [https://wiibrew.org/wiki/vWii vWii on WiiBrew]

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