Verilog: OR Gate Behavioral Modelling with Testbench Code
Verilog Code OR Gate Behavioral Modelling
Xilinx Output:
module OR_GATE (
input a, b,
output out );
reg out;
always @(a or b)
begin
if(a==0 & b==0)
out = 1’b0;
else
out = 1’b1;
endmodule
//test-bench
initial begin
a=0; b=0;
#100; //wait 100ns for global reset to finish
//add stimulus here
#100 a=0; b=1;
#100 a=1; b=0;
#100 a=1; b=1;
end
initial begin
#100 $monitor(“a=%b, b=%b, out=%b”, a, b, out);
end
endmodule
Xilinx Output:
 |
| OR Gate Response |
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