MACCtrl1
iowrite16 (TxDisable, ioaddr + MACCtrl1);
iowrite16 (StatsEnable | RxEnable | TxEnable, ioaddr + MACCtrl1);
iowrite16(ioread16(ioaddr + MACCtrl1) | TxEnable, ioaddr + MACCtrl1);
if (ioread16(ioaddr + MACCtrl1) & TxEnabled)
iowrite16(TxDisable | RxDisable | StatsDisable, ioaddr + MACCtrl1);
iowrite16(RxEnable, ioaddr + MACCtrl1);
iowrite16 (StatsEnable | RxEnable | TxEnable, ioaddr + MACCtrl1);
ioread16(ioaddr + MACCtrl1), ioread16(ioaddr + MACCtrl0));