Please describe what this testbench code is doing. You can use comments for each line if that is easier for you. This code is using Verilog.
Please describe what this testbench code is doing. You can use comments for each line if that is easier for you. This code is using Verilog.
Programming with Microsoft Visual Basic 2017
8th Edition
ISBN:9781337102124
Author:Diane Zak
Publisher:Diane Zak
Chapter6: Sub And Function Procedures
Section: Chapter Questions
Problem 1MQ3
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Question
Please describe what this testbench code is doing. You can use comments for each line if that is easier for you. This code is using Verilog.
`timescale 1ns / 1ps
module display_tb02();
reg [4:0] P;
reg [1:0] X;
wire [3:0] an;
wire [0:7] led;
Disp_tester uut(
.P(P),
.X(X),
.an(an),
.led(led)
);
initial
begin
$display("\nTestbench start");
{P,X}=0; //quantity formed by concatenating....initialized to 0
#100;
end
always
begin
#10; //wait for 10 * 1ns = 10ns
if ({P,X} === 'b1111111)
begin
#10;
$display("Testbench end");
$finish;
end
else
begin
{P,X} = {P,X} + 1;
$display("P,X=%0d,%0d",P,X);
$display("an,led=,%b,%b",an,led);
end
end
endmodule
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