For 8051:
h**p://w*w.lll.lu/~edward/embeth.htm
h**p://Web51.HW.cz/
h**p://8052.lphard.cz/Develop.html
h**p://w*w.cornelius-consult.de/ethernet/
h**p://w*w.elektroda.pl/eboard/viewtopic.php?topic=5451&forum=7
h**p://w*w.elektroda.pl/eboard/uploads/Tinytcp_by_8052_105.zip
h**p://w*w.elektroda.pl/eboard/uploads/8952_ip.rar
h**p://w*w.lll.lu/~edward/embeth.htm
h**p://w*w.ethernut.de
h**p://w*w.ibutton.com/TINI/hardware/index.html
h**p://w*w.ee.ucr.edu/~phoang/