有用过XILINX ISE中的MIG的么？为什么我用的这个生成的.ucf文件在translate的时候报错？

ERROR:ConstraintSystem:59 - Constraint <NET "infrastructure_top0/clk_dcm0/clk"   TNM_NET = "clk0";> [hmem/user_design/par/hmem.ucf(36)]: NET   "infrastructure_top0/clk_dcm0/clk" not found.  Please verify that:   1. The specified design element actually exists in the original design.   2. The specified object is spelled correctly in the constraint source file.


类似这种，总共有十几个。。 此帖出自小平头技术问答