fillblock_16byte((void*)VRAM_LFB_FB0_ADDR, 0, 240 * 160 / 16);
fillblock_16byte((unsigned char*)VRAM_LFB_FB0_ADDR + 240 * 3, 0xffffffff, 240 / 16);
fillblock_16byte((void*)VRAM_LFB_FB0_ADDR, 0, 240 * 160 / 16);
fillblock_16byte((unsigned char*)VRAM_LFB_FB0_ADDR + 240 * 3, 0xffffffff, 240 / 16);