8bitworkshop/test/cli/verilog/t_param.v

// DESCRIPTION: Verilator: Verilog Test module
//
// This file ONLY is placed under the Creative Commons Public Domain, for
// any use, without warranty, 2003 by Wilson Snyder.
// SPDX-License-Identifier: CC0-1.0

module t (/*AUTOARG*/
   // Inputs
   clk
   );
   parameter PAR = 3;

   m1 #(PAR) m1();
   m3 #(PAR) m3();
   mnooverride #(10) mno();

   input clk;
   integer cyc=1;
   reg [4:0] bitsel;

   always @ (posedge clk) begin
      cyc <= cyc + 1;
      if (cyc==0) begin
	 bitsel = 0;
	 if (PAR[bitsel]!==1'b1) $stop;
	 bitsel = 1;
	 if (PAR[bitsel]!==1'b1) $stop;
	 bitsel = 2;
	 if (PAR[bitsel]!==1'b0) $stop;
      end
      if (cyc==1) begin
	 $write("*-* All Finished *-*\n");
	 $finish;
      end
   end

endmodule

module m1;
   localparam PAR1MINUS1 = PAR1DUP-2-1;
   localparam PAR1DUP = PAR1+2;  // Check we propagate parameters properly
   parameter PAR1 = 0;
   m2 #(PAR1MINUS1) m2 ();

   // Packed arrays
   localparam [1:0][3:0] PACKED_PARAM = { 4'h3, 4'h6 };
   initial if (PACKED_PARAM != 8'h36) $stop;
endmodule

// bug 810
module m2 #(/*parameter*/ integer PAR2 = 10);
   initial begin
      $display("%x",PAR2);
      if (PAR2 !== 2) $stop;
   end
endmodule

module m3;
   localparam LOC = 13;
   parameter PAR = 10;
   initial begin
      $display("%x %x",LOC,PAR);
      if (LOC !== 13) $stop;
      if (PAR !== 3) $stop;
   end
endmodule

module mnooverride;
   localparam LOC = 13;
   parameter PAR = 10;
   initial begin
      $display("%x %x",LOC,PAR);
      if (LOC !== 13) $stop;
      if (PAR !== 10) $stop;
   end
endmodule