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1 extern module counter (input clk,enable,reset,
2 output logic [3:0] data);
3
4 //+++++++++++++++++++++++++++++++++++++++++++++++++
5 // Extern Module
6 //+++++++++++++++++++++++++++++++++++++++++++++++++
7 module extern_module();
8
9 logic clk = 0;
10 always #1 clk++;
11 logic enable, reset;
12 wire [3:0] data;
13
14 counter U(clk,enable,reset,data);
15
16 initial begin
17 $monitor("@%0dns reset %b enable %b data %b",
18 $time,reset,enable,data);
19 reset <= 1;
20 #10 reset <= 0;
21 #1 enable <= 1;
22 #10 enable <= 0;
23 #4 $finish;
24 end
25
26 endmodule
You could download file extern_module.sv here
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1 //=================================================
2 // Module declration
3 //=================================================
4 module counter(input clk,enable,reset,
5 output logic [3:0] data);
6
7 always @ (posedge clk)
8 if (reset) data <= 0;
9 else if (enable) data ++;
10
11 endmodule
You could download file extern_counter.sv here
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