Driver for Opencores 10/100 Ethernet MAC

What network stack/OS are you planning to use?

A couple of years ago I ported this MAC to work with Nios I and the plugs library. I can post this code but it won't be compatible with LWIP or linux -- some work would be needed to port it.... however it wouldn't surprise me if others here have done such a port or written a new driver from scratch already. Let me know if you're interested.