LAUNCH_2D
voodoo3_write32(sc, LAUNCH_2D, x | (y << 16));
voodoo3_write32(sc, LAUNCH_2D, x | (y << 16));
voodoo3_write32(sc, LAUNCH_2D, latch);
voodoo3_write32(sc, LAUNCH_2D, latch);
voodoo3_write32s(sc, LAUNCH_2D, latch);
voodoo3_write32s(sc, LAUNCH_2D, latch);