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AR# 18839

7.1i Timing/MAP - "FATAL_ERROR:Timing:bastwoffsetpref.c:585:" occurs when I use the -timing switch


General Description:

When I run MAP using the -timing switch, the following error message is reported:

"FATAL_ERROR:Timing:bastwoffsetpref.c:585: - Clock arrival time not found! Process will terminate. To resolve this error, please consult the Answers Database and other online resources at http://support.xilinx.com. If you need further assistance, please open a WebCase by clicking on the "WebCase" link at http://support.xilinx.com."


This error occurs because a TIG is present on the clock path. As the timing tools do not have any information about the clock, an analysis cannot be run, which causes the error.

To avoid this problem, instead of using TIGs on clock paths to remove them from the unconstrained path report, use values (i.e., FROM:TO 10ns).

AR# 18839
Date Created 09/03/2007
Last Updated 01/18/2010
Status Archive
Type General Article