finalmente ci sono riuscito,anche con l'aiuto di Ramponis sul foro int
adesso sto in questa situazione
Couldn't find valid MAC address for enet0. Using default!
Ethernet eth0: MAC address 00:03:7f:e0:02:bf
IP: 192.168.1.1/255.255.255.0, Gateway: 0.0.0.0
Default server: 192.168.1.2
RedBoot(tm) bootstrap and debug environment [ROMRAM]
Non-certified release, version V1.00 - built 10:37:27, Dec 12 2006
Copyright (C) 2000, 2001, 2002, 2003, 2004 Red Hat, Inc.
Board: FON1
RAM: 0x80000000-0x81000000, [0x80040aa0-0x80fe1000] available
FLASH: 0xa8000000 - 0xa87f0000, 128 blocks of 0x00010000 bytes each.
== Executing boot script in 10.000 seconds - enter ^C to abort