Answers Database

NGDBUILD: Could not find NET " " in design " " with Cadence Concept design


Record #3444

Problem Title:
NGDBUILD: Could not find NET " " in  design " " with Cadence Concept
design



Problem Description:
Keywords: ngdbuild, concept, ucf

Urgency: Standard

General Description:  Ngdbuild error out on entries specified in the UCF when
making references to signals or instance names in the EDF file generated from
concept2xil.  For example:

ERROR:bascp:87 - Could not find NET "ufastcnt/copyq7" in design "cnt3k".  NET
   entry is "NET "ufastcnt/copyq7" S;


Solution 1:

When writing UCF syntax to signals names or instance names in component
sub-modules, the user must pay attention to how concept2xil will write
out heirarchal references.  Concept2xil issues a "page1$" in the path-name
hierarchy with respect to a top-level sheet. For example, the following
UCF file lists:

NET "page1$ufastcnt/qxo3" S;

This should correlate to the references written in .edf file written from
concept2xil.  To verify, place and route your design once without the
specified UCF file, and then bring up epic and view all the nets to see how
they're named, or bring up the .edf file in a texteditor to view the
signal or instance names.



End of Record #3444