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AR# 35397

12.2 PlanAhead - The PlanAhead tool cannot set KEEPER to an I/O port of Spartan devices


I am attempting to put a KEEPER attribute on an IOB, but the PlanAhead tool does not have a value KEEPER that I can choose.

How can I set this?


This is a known issue in the PlanAhead software. Currently, there is no way to set the KEEPER attribute on the I/O from the PlanAhead tool. 

To work around the issuem, edit the ".ucf" manually to add the attribute.

This issue is resolved in ISE Design Suite 12.3.

Linked Answer Records

Associated Answer Records

Answer Number Answer Title Version Found Version Resolved
35180 Spartan-6 - 12.4 Software Known Issues related to the Spartan-6 FPGA N/A N/A
AR# 35397
Date 05/23/2014
Status Archive
Type Known Issues
  • PlanAhead - 12.1
  • PlanAhead - 12.2
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