sio_ldn_readw
dinfo->iobase = sio_ldn_readw(sc, ldn, 0x60);
dinfo->iobase2 = sio_ldn_readw(sc, ldn, 0x62);
dinfo->irq = sio_ldn_readw(sc, ldn, 0x70);
dinfo->dma = sio_ldn_readw(sc, ldn, 0x74);