( ESNUG 446 Item 18 ) ------------------------------------------- [09/01/05]

From: Gareth Baron <gbaron=user domain=modulusvideo pot calm>
Subject: How to Hook Up Debussy and Modelsim in an XP/NT Environment

Hi, John,

I thought this would be a useful post for some other DeepChip guys.  I'm
constantly being asked how to hook up Modelsim to Debussy on an XP/NT
environment.  If you use the automatic waveform update option in Debussy
it will automatically detect the update and reload the waveform after a
simulation.

To hook in Debussy with Modelsim:

  1. Copy the NOVAS_FLI.DLL PLI module (usually located in
     "C:\Novas\Debussy\share\PLI\modelsim_fli54" or similar directory)
     to the "C:\Modeltech_5.4b\win32" directory.  I copied all files to
     be safe.

  2. Setup your simulation environment by adding this code to you top
     level module (or in a place where it will get called all the time
     for compiles):

       //---------------------------------------------
       // Novas Debussy compressed dumpfile option
       //---------------------------------------------

       `ifdef DEBUSSY
        initial begin
            $fsdbDumpvars(0, `TOP_LEVEL);  //what to dump
            $fsdbDumpfile("dump.fsdb");
        end
       `endif

  3. You have 2 options to get this running.  You can use .f files or
     a .v file.

     In your .f file you must

     a. `define DEBUSSY
     b. `define TOP_LEVEL

     eg. add the following lines

       +define+DEBUSSY // output Debussy FSDB files
       +define+TOP_LEVEL="top_module_name" // output Debussy FSDB files

     or

     In your .v file you must add

       `define DEBUSSY 1
       `define TOP_LEVEL "top_module_name"

  4. Run your simulation script with the VSIM options
     
                 VSIM your_top_module -pli ./novas_fli.dll

  5. In Debussy, look for the "dump.fsdb" compressed waveform file in your
     output directory.  There will be a load of other files which inform
     Debussy about the vectors and the trees to recurse.

Use Debussy as normal.  Run your simulations in Modelsim and then see the
results appear.

    - Gareth Baron
      Modulus Video, Inc.                        Sunnyvale, CA