epic_read_eeprom
static int epic_read_eeprom(epic_softc_t *,u_int16_t);
tmp = epic_read_eeprom(sc, i);
((u_int16_t *)sc->sc_macaddr)[i] = epic_read_eeprom(sc,i);
CSR_WRITE_4(sc, NVCTL, epic_read_eeprom(sc, EEPROM_NVCTL) & 0x1F);