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d8ff16a | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 | `timescale 1ns/1ps
module tb_decoder2x4;
reg a;
reg b;
wire y0;
wire y1;
wire y2;
wire y3;
decoder2x4 uut (
.a(a),
.b(b),
.y0(y0),
.y1(y1),
.y2(y2),
.y3(y3)
);
initial begin
$display("a b | y3 y2 y1 y0");
$display("-----------------");
a=0; b=0; #10; $display("%b %b | %b %b %b %b", a, b, y3, y2, y1, y0);
a=0; b=1; #10; $display("%b %b | %b %b %b %b", a, b, y3, y2, y1, y0);
a=1; b=0; #10; $display("%b %b | %b %b %b %b", a, b, y3, y2, y1, y0);
a=1; b=1; #10; $display("%b %b | %b %b %b %b", a, b, y3, y2, y1, y0);
$finish;
end
endmodule
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