sopc design with ddr sdram controller

[Altera_Forum]

Hi, 

 I am getting the following error when running the sopc design(which has ddr-sdram controller), am I suppose to change anything in the TCL scripts to amke it work?      Error: Analysis and Elaboration failed. The constraints script will not be able to add any constraints. Error: Tcl error: ERROR: Error(s) found while running an executable. See report file(s) for error message(s). Message log indicates which executable was run last. while executing "error $result" (procedure "check_paths" line 13) invoked from within "check_paths $wrapper_name $do_analysis" invoked from within "if { $run_var != 0 } {# ########################################################################### Procedure check_paths() will analyse the project..." (file "add_constraints_for_ddr_sdram_0.tcl" line 74) invoked from within "source add_constraints_for_ddr_sdram_0.tcl" (file "auto_add_ddr_constraints.tcl" line 11) Error: Evaluation of Tcl script auto_add_ddr_constraints.tcl unsuccessful Error: Quartus II Shell was unsuccessful. 11 errors, 0 warnings Error: Peak virtual memory: 60 megabytes Error: Processing ended: Thu Oct 16 14:09:52 2008 Error: Elapsed time: 00:00:15 Error: Total CPU time (on all processors): 00:00:00 Error: Quartus II Full Compilation was unsuccessful. 13 errors, 0 warnings   Thanks a lot! Sasi 

[Altera_Forum]

You should edit the DDR megafunction and click on step 2, labelled constraints.  

This will create the "auto_add_ddr_constraints.tcl" which should in turn load the "add_constraints_for_<DDR SDRAM NAME>.tcl" script.

[Altera_Forum]

hi  

 i have the same problem , how can i edit the megafunction plzzzzzzzzzzzzzzzzzzzzzzzzz :)) thank u

[Altera_Forum]

Hi, 

 Have a read through Chapter 1 of this document:  http://www.altera.com/literature/hb/external-memory/emi_tut_ddr.pdf  Mark.