UINT32 by133_state::screen_update_granny(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
//bitmap.fill(0xff000000, cliprect);
copybitmap(bitmap, m_crtc->get_bitmap(), 0, 0, 0, 0, cliprect);
copybitmap_trans(bitmap, m_crtc2->get_bitmap(), 0, 0, 0, 0, cliprect, 0xff000000);
return 0;
}
