To clarify, this isn't about official multiboots; those are as simple as with an original cartridge. This is about homebrew ones, and specifically about using a GBA flashcart to host a multiboot that it can send to slaves. I already know about the Gamecube and Wii apps, and also about Game Boy Interface's ability to pipe data from the GCN to the GBP when the little tab in the latter's EXT1 isn't pressed down.
I just want to know if there's a utility for it. It would be pretty nice to have on my GBA utility belt.
I just want to know if there's a utility for it. It would be pretty nice to have on my GBA utility belt.