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AR# 6406

ngdbuild Virtex designs: ERROR:basnu:118 - logical net "xxxx" has both a pullup and a pulldown.

Description

Keywords: ngdbuild, basnu, 118, pullup, pulldown, Virtex

Urgency: Standard

Problem Description:

ngdbuild currently adds a pullup to a BUFT net. If a user has a pulldown
connected to this net, ngdbuild will issue the following error:

ERROR:basnu:118 - logical net "xxxx" has both a pullup and a pulldown.

解决方案

For Virtex designs, pullups and pulldowns are mainly used in the IO blocks.
Pulldowns can't be connected to the output of the internal BUFTs. To avoid
the error, pulldowns have to be removed from the design.
AR# 6406
创建日期 09/01/2007
Last Updated 06/13/2002
状态 Archive
Type ??????