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AR# 32477

11.1 PlanAhead - Incorrect syntax written to Timespec PERIOD using predefined groups


When I create a Timespec PERIOD within PlanAhead, incorrect syntax is used which causes Constraint System errors similar to the following.  


"ERROR:ConstraintSystem - In file: floorplan_1.ucf(9): Constraint 'PERIOD' was 

applied to 'RISING FFS', but is only applicable to the following: 

design:NET or constraint:timegrp or global:clocknets 

Please see the Constraints Guide for more information on this constraint."


This will be fixed in a future release of PlanAhead.  


To create Timespec PERIOD constraints using predefined groups in the current release, use Constraints Editor.

AR# 32477
Date Created 04/10/2009
Last Updated 05/23/2014
Status Archive
Type General Article