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AR# 1419

5.0 PPR - error 5812: Constraint file instance could not be matched to a constrainable instance in the netlist

Description



PPR: Error 5812: Constraint file instance 'Macro/$1I321 could not be matched to a constrainable instance in netlist.

解决方案

Here are a few things to check for:

The immediate cause of ppr error 5812 is that something in the CST
file cannot be found in the design netlist.
The root cause could be one of several things, depending on the
design entry method:

1) The instance in question was renamed by the user (most likely
to happen in schematic entry).
2) The instance in question was renamed by some software tool
(most likely to happen during VL import to Foundation, or
VHDL/Verilog/ABEL recompile).
3) The instance has been trimmed by XNFPREP (most likely when
schematic changes have been made that may affect connectivity).
So you should look carefully at the instance name reported
in the error. If it comes from the Verilog code (which is most
likely), then it's simply a fact of life with HDL compilers: most
instances get renamed every time you recompile.
If the instance is an I/O pin or a gate on the schematic, then you
should check the XNFPREP trimming report. Maybe something got
disconnected on the schematic, causing some things to get trimmed.
AR# 1419
创建日期 08/31/2007
Last Updated 03/22/2000
状态 Archive
Type ??????