Subversion Repositories iso7816_3_master

`timescale 1ns / 1ps

`default_nettype none

module HammingWeight(

        dataIn,

        hammingWeight

        );

parameter DATA_WIDTH=4;

parameter WEIGHT_WIDTH=2;

input wire [DATA_WIDTH-1:0] dataIn;

output reg [WEIGHT_WIDTH-1:0] hammingWeight;

always @(*) begin:hamminWeightBlock

        integer i;

        hammingWeight=0;

        for(i=0;i<DATA_WIDTH;i=i+1) begin

                hammingWeight=hammingWeight + dataIn[i];

        end

end

endmodule

/*

task hammingWeight

parameter DATA_WIDTH=4;

parameter WEIGHT_WIDTH=2;

input wire [DATA_WIDTH-1:0] dataIn;

output reg [WEIGHT_WIDTH-1:0] hammingWeight;

integer i;

begin

        for(i=0;i<DATA_WIDTH;i=i+1) begin

                hammingWeight=hammingWeight + dataIn[i];

        end

end

endtask

*/

/*

function hammingWeight

parameter DATA_WIDTH=4;

parameter WEIGHT_WIDTH=2;

input wire [DATA_WIDTH-1:0] dataIn;

output reg [WEIGHT_WIDTH-1:0] hammingWeight;

integer i;

begin

        for(i=0;i<DATA_WIDTH;i=i+1) begin

                hammingWeight=hammingWeight + dataIn[i];

        end

end

endtask

*/