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AR# 12905

3.1isp8 NGDBuild - "ERROR:NgdBuild:408 - Invalid UCF/NCF property value detected, line number is 40, offset is 10, value is '='"

Description

Keywords: 3.1i, NGDBuild, 408, UCF, NCF, invalid, property

Urgency: Standard

General Description:
When I implement a design in Foundation 3.1i with Service Pack 8 or Design Manager 3.1i with Service Pack 8, the following error message is reported during the "translate" stage:

"ERROR:NgdBuild:408 - Invalid UCF/NCF property value detected, line number is 40, offset is 10, value is '='"

Solution

When this error is reported, check the .ncf file. FPGA Express has incorrectly entered a constraint into this file, which will read something similar to:

NET "U1/"="-return243" TNM_NET = "U1_"="-return243" ;

Note that the constraint contains the invalid "=" in the middle of the net name and the timing net name.

To avoid this problem, change these names to reflect the actual names:

NET "U1/-return243" TNM_NET = "U1_-return243" ;
AR# 12905
Date Created 10/17/2001
Last Updated 08/20/2002
Status Archive
Type General Article