We have detected your current browser version is not the latest one. Xilinx.com uses the latest web technologies to bring you the best online experience possible. Please upgrade to a Xilinx.com supported browser:Chrome, Firefox, Internet Explorer 11, Safari. Thank you!

AR# 21986

8.1i Incremental Design/ XST - Incremental Synthesis attribute does not work correctly when using true/false, but does when using yes/no


The Constraints Guide says that true and false are viable attributes for both the Incremental Synthesis and Resynthesize attributes. When I try to use these values in my HDL, they do not work.


For XCF entry, true/false are viable options in the XCF. However, when using HDL to enter these constraints, yes and no are the only viable choices.

This inconsistency will be addressed in the documentation in a future version.
AR# 21986
Date Created 09/04/2007
Last Updated 07/20/2010
Status Archive
Type General Article