Hi Adac,
Well I dusted off the core but it doesn't work! I need to go in and do some debugging; its likely that I have a pin assignment wrong or something (I have a daughter card with 10/100 PHY).... not too surprising as I haven't used it in a while, and a lot of tool changes have happened in that time (although it did work great and I'd had a web server running, did throughupt tests, etc.). So, unfortunately this will have to wait until I get through a couple other more pressing issues. However, I am happy to email you the files personally (I just don't want to post something to the board until it works)... email me if you want jkempa --at-- altera --dot--- com and I'll send it your way.
Oh by the way, the failure was when my MAC driver software went out to talk to the external PHY on my daughter card; I can talk to the MAC core okay...so I am leaning in the direction of a bad pin assignment or HW failure on this one!