P_TNC
if (pp && (pp->p_nrm & (P_KPMC | P_KPMS | P_TNC))) {
#define PP_ISNC(pp) ((pp)->p_nrm & (P_PNC|P_TNC))
#define PP_ISTNC(pp) ((pp)->p_nrm & P_TNC)
#define PP_SETTNC(pp) ((pp)->p_nrm |= P_TNC)
#define PP_CLRTNC(pp) ((pp)->p_nrm &= ~P_TNC)
ASSERT(!(pp->p_nrm & (P_KPMC | P_KPMS | P_TNC | P_PNC)));