Is there any way to play gba games with the firmware on top screen of the 3ds and on 400 x 240? I don't like the black borders (I know that's the native resolution of gba games, but I prefer playing on fullscren).
This is currently not supported and honestly i don't know if i will add it any time soon. Fullscreen scaling will destroy the aspect ratio and doesn't bring any benefit in terms of scaling artifacts.
Is there any way to play gba games with the firmware on top screen of the 3ds and on 400 x 240? I don't like the black borders (I know that's the native resolution of gba games, but I prefer playing on fullscren).