DEVI_S_EVADD
{ "S_EVADD", DEVI_S_EVADD, DEVI_S_EVADD },
((DEVI(dip)->devi_state & DEVI_S_EVADD) == DEVI_S_EVADD)
DEVI(dip)->devi_state |= DEVI_S_EVADD; \
DEVI(dip)->devi_state &= ~DEVI_S_EVADD; \
DEVI(dip)->devi_state &= ~(DEVI_S_EVADD | DEVI_S_EVREMOVE); \