Debugging the linuxBIOS code

Hi,

Is there a recommended way of debugging LinuxBIOS code.

I burnt my FLASHROM with LinuxBIOS, nothing came 
    up at all. Not a single message came at the serial Output.
    I knew that my North bridge code has issues, but still 
    something should have come. I guess..

I had connected the serial out of my PC to another PC
    and I am using an Windows HyperTerminal to view
    the messages. 
    Should it not show something at all even if north bridge code
    is broken.

Could anyone give their views on this one..

Regards
Deepak