Problem with ssram

Hi, thanks a lot for yours response, but i don't forget to put a phase shift, and connect clock to ssram. My ssram work properly as well. I verified it by run example hardware & software progrm prowides by Altera. My problem have started since i wont to make my own nios project from the beginning. I used all setings from thet old project and nothing. Maybe i overlloked sonethink, but i don't now what. I read users manual to ssram fron SOPC Builder and i found information that Desired Tco (Avalon to SSRAM clock) should be -2.0ns but i don't now where i can make it.