A port of the RSK RX63N Zero Copy uIP demo to the GNURX toolchain. Compare the code with R01AN1190EU0100 "Zero-Copy Ethernet Driver Demonstration" Application Note source to see what I had to change (I recommend WinMerge on windows or K3Diff on GNU/Linux). I have problems with the Debug LCD module on my RSK when using the GNURX toolchain but don't know why so I've added a little debug console on SCI0. I've left comments labelled with "MSEMTD" on most of the changes. Let me know if you use it!