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AR# 5536

1.5i Ngdanno - ERROR:baspp - this design contains logic for which correlated back annotation ...

Description

ERROR:baspp - this design contains logic for which correlated back annotation
is currently not supported. Please rerun ngdanno without using the .ngm file.

The test case has an ADD-G-CI COUT0 pin driving both an OBUF and an FMAP. The mapper packs the FMAP into the same CLB as the ADD-G-CI (it was *not* directed to do this by user constraints) so the COUT0 signal is routed through the G LUT, out the Y pin, and back into the F1 pin.

Solution

A fix for this problem is included in the 1.5i Service Pack 1. For details
on this Service Pack see http://www.xilinx.com/techdocs/5514.htm
AR# 5536
Date Created 09/01/2007
Last Updated 06/13/2002
Status Archive
Type ??????