Hardware/Expansion Interface: Difference between revisions
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The '''EX'''pansion '''I'''nterface (a.k.a. '''EX'''ternal '''I'''nterface, and EXI) is an SPI-like bus. On the [[GameCube]], it is exposed via the Serial Ports and Memory Card slots, and is used internally for the [[GameCube Hardware/RTC#IPL_ROM|IPL ROM]] + the [[GameCube Hardware/RTC|RTC]]. On the [[Wii]], it is exposed via the Memory Card slots, and used internally for a stripped down GameCube IPL + the [[Wii Hardware/RTC]]. The Wii Family Edition and Wii Mini are identical in this regard, but don't have the actual memory card slots (the traces for them exist though). The [[Wii U]] technically also has it, albeit only internally for the RTC. | The '''EX'''pansion '''I'''nterface (a.k.a. '''EX'''ternal '''I'''nterface, and EXI) is an SPI-like bus. On the [[GameCube]], it is exposed via the Serial Ports and Memory Card slots, and is used internally for the [[GameCube Hardware/RTC#IPL_ROM|IPL ROM]] + the [[GameCube Hardware/RTC|RTC]]. On the [[Wii]], it is exposed via the Memory Card slots, and used internally for a stripped down GameCube IPL + the [[Wii Hardware/RTC|RTC]]. The Wii Family Edition and Wii Mini are identical in this regard, but don't have the actual memory card slots (the traces for them exist though). The [[Wii U]] technically also has it, albeit only internally for the RTC. | ||
Latest revision as of 01:08, 2 August 2026
The EXpansion Interface (a.k.a. EXternal Interface, and EXI) is an SPI-like bus. On the GameCube, it is exposed via the Serial Ports and Memory Card slots, and is used internally for the IPL ROM + the RTC. On the Wii, it is exposed via the Memory Card slots, and used internally for a stripped down GameCube IPL + the RTC. The Wii Family Edition and Wii Mini are identical in this regard, but don't have the actual memory card slots (the traces for them exist though). The Wii U technically also has it, albeit only internally for the RTC.
Channel/CS to port mapping
[edit | edit source]- Channel 0:
- CS 0: Slot-A
- CS 1: RTC
- CS 2: (GameCube-only) SP1
- Channel 1:
- CS 0: Slot-B
- CS 1/2: Unpopulated
- Channel 2:
- CS 0: (GameCube-only) SP2
- CS 1/2: Unpopulated