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→Extension Controller Documentation
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== Extension Controller Documentation ==
−''Individual Extension Controllers are described on the [[Wiimote/Extension Controllers|Extension Controllers]] page.''
=== Encryption setup ===
=== Encryption setup ===
After the identification is read, the encryption can be set up if required. This is done by enabling encryption by writing 0xAA to extension register 0xF0, and then writing the 16-byte key to register 0x40. The key is written in 3 blocks of 6, 6, and 4 bytes. (Writing a single encryption byte to register 0x40 will work on genuine Nintendo controllers, but not on others). After this the extension can be operated in full encryption mode.
After the identification is read, the encryption can be set up if required. This is done by enabling encryption by writing 0xAA to extension register 0xF0, and then writing the 16-byte key to register 0x40. The key is written in 3 blocks of 6, 6, and 4 bytes. (Writing a single encryption byte to register 0x40 will work on genuine Nintendo controllers, but not on others). After this the extension can be operated in full encryption mode.
−= Acknowledgements =
= Acknowledgements =