A_XGM_XAUI_IMP
t3_write_reg(adapter, A_XGM_XAUI_IMP, 0);
t3_read_reg(adapter, A_XGM_XAUI_IMP);
v = t3_read_reg(adapter, A_XGM_XAUI_IMP);
t3_write_reg(adapter, A_XGM_XAUI_IMP,