Тестбенч для счётчиков рандомных счётчиков

Подробности

Автор: EngineerDeveloper®

module tb();
reg clk;
reg  reset;
reg  enable;
reg  up_down;

wire [`WIDTH-1 : 0] count;
wire overflow;

initial begin
$monitor("rst %b en %b updown %b cnt %b overflow %b",
reset,enable,up_down,count, overflow);
clk = 0;
reset = 1;
enable = 0;
up_down = 0;
#10 reset = 0;
#1 enable = 1;
#20 up_down = 1;
#30 $finish;
end

always #1 clk = ~clk;

lfsr_updown U(
.clk ( clk ),
.reset ( reset ),
.enable ( enable ),
.up_down ( up_down ),
.count ( count ),
.overflow ( overflow )
);
endmodule