Could someone tell me why memcpy and DMA 3 transfer should result in
different processor behaviors, other than speed? When I replace my
DMA copies with memcpy for transfering const data to the VRAM in mode
4, 1/2 the images are fine and 1/2 are chuncky looking - all on the
same screen. I was suprised that this worked at all as mode4 requires
u16 writes and memcpy is u8 writes.