De2-70

Hi,

to me it sounds like a problem with your whole fpga configuration in Quartus, i.e. base addresses and names of the components. You probably get the message that verification on downloading the image fails. You have to check if the base address from your RAM is the same which is displayed during the download process.

You should try renaming and changing the addresses of all the components in quartus for your own made ptf file to the one in the DE2-70 example.

Or better reconfigure the kernel from uclinux distribution.

Urmel