HW
if (HW)
if (HW)
if (!HW)
HW = 1, DU = -1;
if (!HW)
HW = 1;
if (!HW)
HW = (CU == NULL) || (DU && equal(DV, CU));
if (HW)
if (!HW)
EXTERN char HW; /* this device is hardwired, see hunt.c */