//2024-6-22 姜青羊
//if-else实现多路选择器

`timescale 1ns/10ps
module muxtwo (
                        A,
                        B,
                        sel,
                        Y
                    );

input                   A,B,sel;
output                  Y;

reg                     Y;

always @(A or B or sel) begin
    if(sel==1'b0)
        Y=A&B;
    else
        Y=A^B;
end


endmodule

//------testbench------

module tb_muxtwo ();

reg[2:0]             sab;
wire                 y;

muxtwo muxtwo (
                    .A(sab[1]),
                    .B(sab[0]),
                    .sel(sab[2]),
                    .Y(y)
                );

initial begin
                    sab<=3'b000;
            #100    $stop;
            
end

always      #10     sab=sab+1;

endmodule