I have a softmod wii, so I'm curious about some games that have specific features that are only available when you plug in a GBA to a gamecube port. I do NOT have a GBA, but I'm playing WindWaker (actually playing from disc, not a ROM), and I've always been curious about the features available via the "Tingle Tuner" with a GBA plugged in. Is there a way to force/simulate a GBA connection programmatically?
I would doubt it, since it would involve running multiple programs simultaneously, which IIRC consoles are not capable of.