Hey, I have this idea, to use the guitar grip with the game boy advance. Someone could develop a proof-of-concept homebrew for this? I understand that this is difficult due to the fact that there is only one slot on the GBA, however, the homebrew could utilize a trick where you pull the flash card out, and It loads the homebrew into the RAM, and then you would put the guitar grip in. Probably not possible, but an idea nonetheless. Thoughts?