le_rdcsr
sc->sc_rdcsr = le_rdcsr;
sc->sc_enaddr[i * 2] = le_rdcsr(sc, 12 + i);
sc->sc_enaddr[i * 2 + 1] = le_rdcsr(sc, 12 + i) >> 8;
static uint16_t le_rdcsr(struct lance_softc *, uint16_t);