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AR# 4194

1.5 4KXL PAR- PAR will not utilize "lone" OFFSET constraints


Keywords: PAR, Timing, TRCE, OFFSET, Constraints, Analysis

Urgency: Standard

General Description: If the only constraints in a .ucf or .pcf are "TIMEGRP OFFSET" (no PERIOD, FROM TO, etc...) PAR doesn't invoke timing-driven operation. If the .ucf or .pcf contains a PERIOD, FROM TO, etc... the OFFSETs are then reported at the timing summary given at the end of the PAR job. TRCE always reports correctly, so this behavior seems to be unique to PAR.


This is only related to PAR. TRCE works correctly.

This problem was fixed in the 1.5i release.
AR# 4194
Date Created 08/31/2007
Last Updated 10/21/2008
Status Archive
Type General Article