TXMIT_CONTROL_REG_W
outw(BASE + TXMIT_CONTROL_REG_W, 0x0000);
outw(BASE + TXMIT_CONTROL_REG_W, 0x0000);
outw(BASE + TXMIT_CONTROL_REG_W, flags);
outw(BASE + TXMIT_CONTROL_REG_W, TCR_ENABLE);
outw(BASE + TXMIT_CONTROL_REG_W, TCR_ENABLE | TCR_PAD_ENABLE);