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Error: ncelab: *F,CUATOP: Attempt to instance top level module

Lawee
Hi all when I simulation design with Quartus lib, and get the infomation ncelab: *F,CUATOP: Attempt to instance top level module 'altddio_bidir' in 'ddr_bidir_32.ALTDDIO_BIDIR_component'. what's wrong with it? is the lib not included in this project? but I have seen altera_mf.v is used: file: ../../../../lib/simlib/cive_ns/altera_mf.v, this file has altddio_bidir module so, can you help me? thanks very much
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  • You can get more information about an error message using the "nchelp" utility. In this case, nchelp tells us the following:

    % nchelp ncelab CUATOP
    nchelp: 10.20-s040: (c) Copyright 1995-2011 Cadence Design Systems, Inc.
    ncelab/CUATOP =
            An attempt was made to instantiate a module which was
            specified on the command line as a top-level module.
            Modules that are not top-level modules must not appear
            on the command line.
            Example:
                    ncelab lib1.top
            Incorrect:
                    ncelab lib1.top lib2.sub_module

    Somehow you told ncelab that 'altddio_bidir'  was a top-level compoent in your design. You'll need to look at your command line and get it straightened out.

Reply

  • You can get more information about an error message using the "nchelp" utility. In this case, nchelp tells us the following:

    % nchelp ncelab CUATOP
    nchelp: 10.20-s040: (c) Copyright 1995-2011 Cadence Design Systems, Inc.
    ncelab/CUATOP =
            An attempt was made to instantiate a module which was
            specified on the command line as a top-level module.
            Modules that are not top-level modules must not appear
            on the command line.
            Example:
                    ncelab lib1.top
            Incorrect:
                    ncelab lib1.top lib2.sub_module

    Somehow you told ncelab that 'altddio_bidir'  was a top-level compoent in your design. You'll need to look at your command line and get it straightened out.

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