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AR# 31712

10.1 ChipScope Pro, CORE Generator - ERROR:NGDBuild:756 - "/.ncf" Line xx 3: Could not find net(s) '' in the design


When generating a ChipScope ICON core targeting a Spartan device, I see the following messages: 


ERROR:NgdBuild:756 - 

"/path/chipscope_icon_0.ncf" Line 

x: Could not find net(s) 'U0/U_ICON/iDRCK' in the design. To suppress this error specify the correct net name or remove the constraint. 

ERROR:Parsers:11 - Encountered unrecognized constraint while parsing. 

ERROR:NgdBuild:134 - Unable to process the "/path/chipscope_icon_0.ncf" constraints file; please see the above messages for details.  


How can I work around this issue?


This is a known issues and is resolved in ChipScope Pro and ISE 10.1 Service Pack 3.

AR# 31712
Date Created 09/19/2008
Last Updated 05/23/2014
Status Archive
Type General Article