8 bits even parity and zeros checker 偶同位元檢查器

8 bits even parity and zeros checker 偶同位元檢查器
(Generator 與 Checker 不同)

//============================================
//check even parity and zeros checker
//filename : even_parity.v
//============================================
module even_parity( din ,ev_parity, all_zeros);

input [7:0] din;
output ev_parity, all_zeros;

assign ev_parity = ~^ din;
assign all_zeros = ~| din;

endmodule

// 時間單位 100ns, 時間精確度100 ps

`timescale 100ns/100ps 

module TB;

/*

module even_parity( din ,ev_parity, all_zeros);

input [7:0] din;

output ev_parity, all_zeros;

*/

reg [7:0] din;

wire ev_parity, all_zeros;

integer i;

 

even_parity UUT( din ,ev_parity, all_zeros);

 

initial begin  

   for ( i=0;i<=256;i=i+1) 

        begin

           {din}  = i;

            #10;

        end

end

endmodule