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NGDBUILD (csttrans) M1.1.1A: ERROR:0 - Could not find INST(S) <signal name> in design


Record #1900

Problem Title:
NGDBUILD (csttrans) M1.1.1A: ERROR:0 - Could not find INST(S) <signal
name> in design



Problem Description:
Keywords: ngdbuild, csttrans, loc, inst

Urgency: Standard

General description:

The use of an instance constraint to constrain an IO location in the
ucf file such as:

INST "Q_CORR_IN<15>" LOC = "P189";

Will cause the following errors in ngdbuild:

ERROR:0 - Could not find INST(S) Q_CORR_IN<15> in design peak832.
ERROR:0 - INST entry is INST "Q_CORR_IN<15>" LOC = "P189";


Solution 1:

This can happen when csttrans is used to convert a cst file that has IO
Locations in it, to a UCF file.  The csttrans assumes that any "place
instance" constraint in the cst file should be an "INST" constraint in
the ucf file.  The valid syntax for IO locations in a ucf file is a
"NET" constraint.

For all IO location constraints in a ucf file use the following syntax:

NET "Q_CORR_IN<15>" LOC = "P189";

If the ucf file was created by csttrans, then the ucf file will need to
be manually edited.  See also Soln# 1604.



End of Record #1900