XINC256          1160 dev/pci/tga.c  			     x += XINC256, xleft -= XINC256) {
XINC256          1207 dev/pci/tga.c  			     x -= XINC256, xleft -= XINC256) {
XINC256          1225 dev/pci/tga.c  			if (xleft) x += XINC256 - XINC64;