where is the pci ethernet card's mac address?

[caokai]

Hi
    In my opinion,a pci ethernet card(intel eepro100)'s mac address
should store somewhere in the PCI cards.
    But in my EST8245 board,it seems the mac address is provided by the
bsp(e.g EST VisionWare)?
    So,if I run the linux without the VisonWare.It have a mac address
00:00:00:00:00:00:00.
     I am confusion now.Any advice?
regards
caokai


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