P_PNC
#define PP_ISNC(pp) ((pp)->p_nrm & (P_PNC|P_TNC))
#define PP_ISPNC(pp) ((pp)->p_nrm & P_PNC)
#define PP_SETPNC(pp) ((pp)->p_nrm |= P_PNC)
#define PP_CLRPNC(pp) ((pp)->p_nrm &= ~P_PNC)
ASSERT(!(pp->p_nrm & (P_KPMC | P_KPMS | P_TNC | P_PNC)));