Loopback All modes test 
mode 3 + BNC media
Append CRC, Right physical add.
Tx packet ... fail
H_int No (Hardware interrupt not happen)
ISR = 40 (Packet transmitted with error(s))
TSR=0 (transmission error)

 Loopback All modes test 
mode 3 + BNC media
Append CRC, Right physical add.
Tx packet ... pass
Rx packet ...
receive status = 21 (broadcast/multicast address,)
(receive error:)

 Loopback All modes test 
mode 3 + BNC media
Append CRC, Right physical add.
Tx packet ... pass
Rx packet ...
receive status = 21 (broadcast/multicast address,)
(receive error:)