Answers Database
PPR ignores timing constraints when invoked from the command line
Record #757
Product Family: Software
Product Line: XACT FPGA
Product Part: ppr
Problem Title:
PPR ignores timing constraints when invoked from the command line
Problem Description:
A user choosing to run the xmake flow by running the programs individually from the command line or
via a batch file may see that PPR is ignoring all timing constraints written in the .cst file, even
if that file is explicitly specified.
Solution 1:
Timing constraints are written into the .xtf file by XNFPREP. Therefore, the "cstfile=" option must
be specified for command-line execution of XNFPREP in order for .cst file timing constraints to be
read.
End of Record #757 - Last Modified: 10/14/96 17:18 |
