Block diagram of an ULTRAY2000 based architecture PICA200
Block diagram of an ULTRAY2000 based architecture PICA200
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== internal SDIO controller ==
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Nintendo recommends SD cards up to 32 GB however the internal SDIO controller seems to support SD cards up to 2.19 Terabyte (32-bit sector number). It's unknown if it really can handle that much. 128 GB was tested and works fine however it causes a major slowdown of the system especially at boot.