?? adder_tp.v
字號(hào):
`timescale 1ns/1ns
`include "adder4.v"
module adder_tp;
reg[3:0] a,b;
reg cin;
wire[3:0] sum;
wire cout;
integer i,j;
adder4 adder(sum,cout,a,b,cin);
always #5 cin=~cin;
initial
begin
a=0;b=0;cin=0;
for(i=1;i<16;i=i+1)
#10 a=i;
end
initial
begin
for(j=1;j<16;j=j+1)
#10 b=j;
end
initial
begin
$monitor($time,,,"%d + %d + %b={%b,%d}",a,b,cin,cout,sum);
#160 $finish;
end
endmodule
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