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AR# 11529

3.1i Virtex-II NGDBuild - ERROR:NgdBuild:468 - output pad net '<net>' is not driven by an output symbol (BUFGCE, BUFGCE_1)

Description

Keywords: BUFGMUX, BUFGCE, 466, 468, 469

Urgency: Standard

General Description:
In NGDBuild, a design containing BUFGCE or BUFGCE_1 reports errors such as the following:

ERROR:NgdBuild:468 - output pad net 'CE_IBUF' is not driven by an output symbol
ERROR:NgdBuild:468 - output pad net 'clk_IBUFG' is not driven by an output symbol
WARNING:NgdBuild:470 - output pad net 'clk_IBUFG' has no legal driver
ERROR:NgdBuild:466 - output pad net 'clk_IBUFG' has illegal connection
WARNING:NgdBuild:477 - clock net 'clk_IBUFG' has non-clock connections
ERROR:NgdBuild:469 - bidirect pad net 'N7' has multiple drivers
WARNING:NgdBuild:465 - bidirect pad net 'N7' has no legal load
ERROR:NgdBuild:466 - bidirect pad net 'N7' has illegal connection

Solution

This problem is fixed in the latest 3.1i Service Pack, available at:
http://support.xilinx.com/support/techsup/sw_updates.
The first service pack containing the fix is 3.1i Service Pack 8.
AR# 11529
Date Created 05/03/2001
Last Updated 08/20/2002
Status Archive
Type General Article