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AR# 12893

4.1i XST - XST is implementing IOBUFDS incorrectly


Keywords: IOBUFDS, IOBUF, bidirectional, differential, signal, XST, Virtex, Virtex-II

Urgency: Standard

General Description:
When performing a schematic-based flow using IOBUFDS, XST connects the buffers incorrectly.

For a Virtex-II HDL flow, please refer to (Xilinx Answer 12759).


This problem is fixed in the latest 4.1i Service Pack, available at:
The first service pack containing the fix is 4.1i Service Pack 2.
AR# 12893
Date Created 10/16/2001
Last Updated 08/06/2003
Status Archive
Type General Article