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AR# 14389

4.2i Virtex-II PAR - Guided PAR struggles to complete PWR/GND routing

Description

Keywords: PWR, VCC, GND, routing, slow long

Urgency: Standard

General Description:
At times, guided PAR struggles to complete PWR/GND routing on certain designs, especially when all active signals have guided successfully.

Solution

This is happening because a suboptimal algorithm is being used to perform the PWR/GND routing.

This problem is fixed in the latest 4.2i Service Pack, available at:
http://support.xilinx.com/support/techsup/sw_updates
The first service pack containing the fix is 4.2i Service Pack 2.
AR# 14389
Date Created 08/29/2007
Last Updated 10/23/2008
Status Archive
Type General Article