The 3DS should be able to emulate the GBA pretty easily. Nintendo won't tell us what CPU it's using, but rumors say it's got two 266 MHz ARM11 cores. To compare, the DSi has a 133 MHz ARM9 and a 33 MHz ARM7, the DS has a 67 MHz ARM9 and a 33 MHz ARM7, and the GBA has a 16.8 MHz ARM7. I don't...