XINC64           1180 dev/pci/tga.c  			      x += XINC64, xleft -= XINC64) {
XINC64           1225 dev/pci/tga.c  			if (xleft) x += XINC256 - XINC64;
XINC64           1229 dev/pci/tga.c  			      x -= XINC64, xleft -= XINC64) {
XINC64           1233 dev/pci/tga.c  			if (xleft) x += XINC64 - XINC4;