GRAPHIC_DEV
qdflags[unit].inuse &= ~GRAPHIC_DEV;
if (!(qdflags[unit].inuse & GRAPHIC_DEV)) {
} else if (qdflags[unit].inuse & GRAPHIC_DEV) {
} else if (qdflags[unit].inuse & GRAPHIC_DEV) {
int nograph = !(qdflags[unit].inuse&GRAPHIC_DEV);
if (qdflags[unit].inuse & GRAPHIC_DEV) {
qdflags[unit].inuse |= GRAPHIC_DEV; /* graphics dev is open */