MACE_ISA_FLASH_NIC_REG
scratch = bus_space_read_8(sc->iot, sc->ioh, MACE_ISA_FLASH_NIC_REG);
bus_space_write_8(sc->iot, sc->ioh, MACE_ISA_FLASH_NIC_REG, scratch);
value = bus_space_read_8(sc->iot, sc->ioh, MACE_ISA_FLASH_NIC_REG);
bus_space_write_8(sc->iot, sc->ioh, MACE_ISA_FLASH_NIC_REG, value);