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Shift register random initialization - how to proceed ?

Pavel47

Hello,

For my testbench I need some custom shift register, that randomly initialized. Here below is its code.

Compilation passes, but elaboration doesn't.

Any solution ?

Thanks in advance.

Pavel.

 module Pixel_v0 (input Din, CLK, output Dout );
   parameter SEED = 33;
   reg [15:0] DATA;
   assign Dout = DATA[15];

   initial DATA = random(SEED);

   generate
      genvar  i;
      for (i = 0; i < 15; i=i+1) begin: DFF
     if (i==0)
       always @(posedge CLK)
         DATA[i] <= Din;
     always @(posedge CLK)
       DATA[i+1] <= DATA[i];
      end
   endgenerate

endmodule

Parents
  • Pavel47

     Perfect ! Thanks Andrew.

    One more question (if possible), more related to the tool - I tried to add the possibility to edit parameter value from schematic. For this I procedded as follows:

    • CIW->Tools->CDF->Edit
    • Set library and cell
    • My parameter were already in the table (with all neccessary settings, that I've picked from some other post)
    • Click Ok
    • Returned to Schematic
    • Click refresh

    Nothing changed - my paramerers didn't appear close to symbols.

    Regards

    Pavel.

Reply
  • Pavel47

     Perfect ! Thanks Andrew.

    One more question (if possible), more related to the tool - I tried to add the possibility to edit parameter value from schematic. For this I procedded as follows:

    • CIW->Tools->CDF->Edit
    • Set library and cell
    • My parameter were already in the table (with all neccessary settings, that I've picked from some other post)
    • Click Ok
    • Returned to Schematic
    • Click refresh

    Nothing changed - my paramerers didn't appear close to symbols.

    Regards

    Pavel.

Children
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