General Description: The following NGDBuild error message is reported:
"ERROR:NgdBuild:397 - Could not find NET 'a(1)' in design 'vrp_top'"
解决方案
Due to the varying bus addressing conventions in different synthesis tools, you must use different bus line addressing schemes -- either <> or () -- for constraints in your UCF file.
For example:
NET "a<1>" LOC = "aa6"; -- Accepted in Synopsys and XST NET "a(1)" LOC = "aa6"; -- Accepted in Synplicity and Mentor Graphics