Subversion Repositories verilog_fixed_point_math_library

`timescale 1ns / 1ps

////////////////////////////////////////////////////////////////////////////////

// Company: 

// Engineer:

//

// Create Date:   14:01:19 01/02/2014

// Design Name:   qmults

// Module Name:   F:/FixedPoint/TestMultS.v

// Project Name:  FixedPoint

// Target Device:  

// Tool versions:  

// Description: 

//

// Verilog Test Fixture created by ISE for module: qmults

//

// Dependencies:

// 

// Revision:

// Revision 0.01 - File Created

// Additional Comments:

// 

////////////////////////////////////////////////////////////////////////////////

module TestMultS;

        // Inputs

        reg [31:0] i_multiplicand;

        reg [31:0] i_multiplier;

        reg i_start;

        reg i_clk;

        // Outputs

        wire [31:0] o_result_out;

        wire o_complete;

        wire o_overflow;

        // Instantiate the Unit Under Test (UUT)

        qmults uut (

                .i_multiplicand(i_multiplicand),

                .i_multiplier(i_multiplier),

                .i_start(i_start),

                .i_clk(i_clk),

                .o_result_out(o_result_out),

                .o_complete(o_complete),

                .o_overflow(o_overflow)

        );

        reg [10:0]       count;

        initial begin

                // Initialize Inputs

                i_multiplicand = 0;

                i_multiplier = 0;

                i_start = 0;

                i_clk = 0;

                count = 0;

                // Wait 100 ns for global reset to finish

                #100;

                // Add stimulus here

                // Add stimulus here

                forever #2 i_clk = ~i_clk;

                end

                always @(posedge i_clk) begin

                        if (count == 47) begin

                                count <= 0;

                                i_start <= 1'b1;

                                end

                        else begin

                                count <= count + 1;

                                i_start <= 1'b0;

                                end

                        end

                always @(count) begin

                        if (count == 47) begin

                                if ( i_multiplier > 32'h1FFFFFFF ) begin

                                        i_multiplier <= 1;

                                        i_multiplicand = (i_multiplicand << 1) + 3;

                                        end

                                else

                                        i_multiplier = (i_multiplier << 1) + 1;

                                end

                        end

        always @(posedge o_complete)

                $display ("%b,%b,%b,%b", i_multiplicand, i_multiplier, o_result_out, o_overflow);               //      Monitor the stuff we care about

endmodule