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AR# 19051

8.1 Ngdbuild - Upper case extension UCF files are not being recognized


Keywords : IOSTANDARDS, ucf, iostandards, pad, report, fpga, FPGA, editor, drive, strength, 6.3.3 


After implementing a design using a ".UCF" file ( upper case extension ), I see that the PAD report shows the incorrect drive strength, IOSTANDARDS, and LOC constraints. FPGA Editor also shows this incorrect information.


The problem is caused by NGDBuild. NGDBuild is not picking up the ".ucf" because the file extension is in upper case. 


To work around the issue, you must use the file extension in lower case.

AR# 19051
Date Created 09/03/2007
Last Updated 05/16/2014
Status Archive
Type General Article