MACCtrl0
outw(inw(BASE + MACCtrl0) | EnbFullDuplex,
BASE + MACCtrl0);
outw(inw(BASE + MACCtrl0) | duplex ? 0x20 : 0,
BASE + MACCtrl0);
(int) inw(BASE + TxStatus), (int) inl(BASE + MACCtrl0),
(int) inw(BASE + MACCtrl1), (int) inw(BASE + MACCtrl0)));
outw(inw(BASE + MACCtrl0) | EnbFlowCtrl, BASE + MACCtrl0);