Honored Contributor
Honored ContributorI could bring down the round-trip time significantly ~ 60-70% by doing few things specified in AN440 and from pointers by Daixiwen and Chris72. Thanks folks.
The round-trip time is still in few milliseconds. The Cyclone IV device and the eval board has limited resources. So I could not implement "Fast packet memory" and "Checksum in hardware". Surprisingly with this board, anything higher than 50 Mhz did not work either. Now I have moved to Nios-II eval board, Stratix-II edition. I think Altera no longer supports it, but I could find the source files for AN440 targeting this board. Managed to generate SOF and ELF. Download worked as well. Ethernet link gets established and it is 100 mbps, full-duplex. No errors. However, Nios-II console displays IP addr of 0.0.0.0 during startup. TCP/IP configuration is correct on the host system and I am using crossover cable for point-to-point ethernet. DHCP is off in BSP. Any idea why would the IP addr get stuck at 0.0.0.0? thanks, -swguy
