an_write_data
static int an_write_data(struct an_softc *, int, int, caddr_t, int);
an_write_data(sc, id, 0x08, (caddr_t)&txcontrol,
an_write_data(sc, id, 0x34, (caddr_t)&tx_frame_802_3,
an_write_data(sc, id, 0x44, (caddr_t)&sc->an_txbuf,