How can I direct run nios programmer on epcs?

This was a long time ago (4+ years) so I'm not sure if that design is still around let alone if the post for it was salvaged when the nios forum went belly up (it was a forum user that created it and not Altera). That said what kind of performance are you looking for with such a solution? I ask because if you managed to run code out of an EPCS device the performance is going to be really bad and all this work isn't worth it if you have performance numbers to meet. If you need code performance then you'll need to page in code to on-chip RAM like DSL said, but this can be a lot of work as well.

If you haven't already looked at code optimizations for reducing your footprint I recommend doing so over executing code out of the EPCS memory directly since that would make a world of difference in terms of execution speed. Running code out of EPCS with the appropriate controller would be like running an 8-bit CPU at 1MHz......