So u can see, the GBA has TWO cpu.
I don't know exactly, but i always thought one for graphics.
The GP has only 1 CPU. So definitive NON for graphics only.
The pictures appear on the screen, cause the cpu is telling them to do.
So if u have an extra CPU which does that, the other cpu can do other things like CALCULATING or stuff.
Maybe this is only a misunderstanding. :blink:
And maybe i'm wrong?