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AR# 14381

4.2i Virtex-II PAR - Placer creates unroutable design during incremental guide


Keywords, BX, BY, unrouted, conflict, incremental

Urgency: Standard

General Description:
During incremental guide, the placer incorrectly places slices in conflict with locked routing. The conflict occurs when slices using BX/BY pins are placed next to switch-boxes containing locked routing that uses the BX/BY pin as a "bankshot".


This problem is fixed in the latest 4.2i Service Pack, available at:
The first service pack containing the fix is 4.2i Service Pack 2.

This fix prohibits the use of the conflicting slice location.
AR# 14381
Date Created 08/29/2007
Last Updated 10/23/2008
Status Archive
Type General Article