hey i have been trying to play gba games on my R4 but some of the emulators i downloaded only allow me to play gb games any other nds type emulators that allow you to play gba games on ds
there is no way of playing gba roms on r4s unless you are using a slot 2 device like the ez flash 3 in 1
There is an emulator but it only supports games of 16 MB i believe the DSi based one supports up to 32 MB's, but you can alway go and buy a supercard dstwo or a iplayer flashcard that has hardware that allows GBA emulation
the emulator is for R4, the difference is that the R4 DS supports up to a few MB's wereas the DSi runs on Dsi mode for the R4i. Also i gave alternate suggestions as the thing is on BETA state so far and it's buggy.
The emulator is just proof of concept. It can't run 16MB, it can run about 2MB homebrew files in DS mode, I think upwards of 4MB in DSi mode. Even then, it gets really iffy, really fast. Nobody should ever expect it to be a fully functional emulator.