jbr has asked for the wisdom of the Perl Monks concerning the following question:

Hi, I got a netlist with logic gates as my modules. Example AND2D4, OR3D0, XOR2D1 etc. These cells definitions are put together in a a file called technology.v so my netlist.v does not have module definition of these gate module. When I read netlist with vhier I get Module refernce not found: AND2D4, OR3D0, XOR2D1 etc.. I am using $vhier -y netlist --modules netlist.v netlist is my directory and it has technology.v which has modules AND2D4, OR3D0, XOR2D1.

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Re: vhier and netlist with library
by GrandFather (Saint) on Apr 09, 2009 at 05:19 UTC
[reply]
Re: vhier and netlist with library
by toolic (Bishop) on Apr 09, 2009 at 13:49 UTC
    You must add the library file onto the vhier command line, for example: 
    $ cat top.v
module top;
    reg  buf_in;
    wire buf_out;
    wire a;
    inv1x i0 (.in(buf_in), .out(a      ));
    inv2x i1 (.in(a     ), .out(buf_out));
endmodule

$ cat technology.v
module inv1x (in, out);
    input  in;
    output out;
    assign out = ~in;
endmodule

module inv2x (in, out);
    input  in;
    output out;
    assign out = ~in;
endmodule
$
$ vhier top.v technology.v --modules
  inv1x
  inv2x
  top
$

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