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AR# 57809

2012.4 Vivado - When modifying a constraint that is in multiple constraint files only the first file is modified


In Vivado 2012.4, I have an IOSTANDARD or LOC constraint that is found in two or more XDC constraint files.
If I modify this constraint using Vivado I/O planning, the wrong XDC file gets updated.

Vivado updates the file that is read first so that the next time the design is opened it shows up as though it was not changed.

Why is this the case?


This is an incorrect behavior in Vivado 2012.4 which has been fixed in Vivado 2013.1.
AR# 57809
Date Created 10/04/2013
Last Updated 12/16/2014
Status Active
Type Known Issues
  • FPGA Device Families
  • Vivado Design Suite - 2012.4