ENVY24HT_MT_PADDR
device_printf(sc->dev, "PADDR:0x%08x\n", envy24ht_rdmt(sc, ENVY24HT_MT_PADDR, 4));
envy24ht_wrmt(sc, ENVY24HT_MT_PADDR, (uint32_t)segs->ds_addr, 4);