This is a question that has been killing me lately, and I don't seem to find the answer anywhere. I don't have a Slot 2 device to put the GBA ROMs there, so I though that there is a GBA Emulator that I can put in my R4DS and play the ROMs directly from the R4. Another question, how much space has the bigger MiniSD card? I have one from 1 GB and I just don't have more space...
ther is no gba emulator that im aware of. as with second question i dont understand it. Most nds flash carts only accept 2GB max. n dont u mean micro sd cause R4DS uses micro...
As vcbc said, there is no GBA emulator and probably never will be. If you really want to play GBA games you can purchase the EZFlash 3-1, this supports most GBA games, and also gives you RAM for the DS browser, and rumble for supported games. MicroSD goes up to 4GB (though 4GB cards are hard to find) I know the R4DS can support to at least 2GB, but it can probably use 4GB too.