Hello there.
I've just started coding on Wii, so I basically just try to figure out how to work with the system and devkitPro at the moment. However, I've already run into a problem with mounting/accessing GameCube Memory Cards. I've assumed that it would work using the set of CARD functions, as seen in the GameCube example code, but trying to access a Memory Card that way always results in a CARD_ERROR_IOERROR, even if I just run a slightly modified version of the example.
Looking at sourcecode of other programs didn't help me too much, even though I've found that the Wii version of Snes9x GX avoids using GC Cards, due to them "not working" in Wii mode.
So basically I've been wondering, if am I doing something wrong, or if there are some general issues with accessing GameCube Memory Cards on Wii that I just have to live with at the moment.
And in case it might be important, I'm running the software on a PAL Wii with System Menu 3.3E and I'm using a first party Nintendo Memory Card 251. I'm also using devKitPro 1.4.7 without any modifications.