netboot bug

Hi,

During testing of different netboot scenarios I found the following oddity.
I consider it to be a bug in the netboot process based on both the
documentation and how I'd expect it to work.

According to the documentation (DS80C400 Network Microcontroller pg. 74): 
"If either DHCP or the TFTP transfer fail, the NetBoot code checks whether
the TFTP transfer has been successful in a previous attempt.  If so, the
TINI400 ROM exits NetBoot and transfers execution to the find-user-code
routine."

I'm using the TINIs400/TINIm400 reference platform and have a succesfully
netbooted and running application.  I have the Netboot tftp option
configured in my DHCP server, and my tftp server running.  I've removed all
3 of the file variations that the netboot process looks for on the tftp
server and power-cycle the TINI.  On restart my application never boots, and
in the tftp server log I see a continuous cycle of the TINI requesting and
not finding any of the 3 netboot files.  I expect, and according to the
documentation, after failing the tftp transfer the netboot process should
exit and transfer to the find-user-code routine.  I found that by creating
an empty (0 byte) TINI400 file on my tftp server the TINI netboot process
would exit and continue with my user code.  

I was interested in having netboot enabled by default in my product, but
this operation is a concern for me.

Thanks,
-Aaron

______________________________
Aaron Buchanan
Firmware/Software Engineer
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