Bug: example.dma_trippelbuffer never shows one frame.
gp_SetView(framebuffer1); // Display of Screen 1
gp_DMA0Memcopy(background,framebuffer3,320*240); // Clear Screen 3
gp_DMA1Wait(); // wait until clear of sreen 3 is finish
gp_SetFont8(30,100,13,"Iam Screen 2...