hello all.i have a problem with my ddr2 controller. when i try to run it with quartus (ver 9.1) i get the following critical warning: --- Quote Start --- the memory pin SDRAM_CK_P must have it's stratix IV D4 delay chain set to 0 (the delay chain is currently set to 1) --- Quote End --- my questions are:
trying installing the service pack and regenerating the IP. I think this is an issue with the early timing models for SIV.There are delay chains on the IO elements that Quartus can use to meet timing for interfaces. They can be manually set in the assignment editor.