eyetest :
==========
step1. the DOS mode keyin :
       Elmon
       
step2. in Elmon command mode use:
       MII 1 0 2000
       --- - - ----
       1. MII  --> mean MII 
       2. 1    --> PHY addr
       3. 0    --> reg 0
       4. 2000 --> 100Mbps full speed send mode.