flow/MAC/tb.sv

module tb ();

   logic [15:0] result;
   logic [7:0] 	a;
   logic [7:0] 	b;
   logic 	reset;
   logic 	clk;   
   
   integer 	handle3;
   integer 	desc3;   
   
   // instantiate device under test
   mac dut (result, a, b, reset, clk);
   
   // generate clock
   always 
     begin
	clk = 1; #10; clk = 0; #10;
     end
   
   initial
     begin
	handle3 = $fopen("test.out");
	#200 $finish;		
     end
   
   always 
     begin
	desc3 = handle3;
	#5 $fdisplay(desc3, "%h %h || %h", 
		     a, b, result);
     end
   
   
   initial
     begin
	#0   a = 16'h0;
	#0   b = 16'h0;	
	#0   reset = 1'b0;
	#15  reset = 1'b1;
	
	
	#20  a = $random;	
	#0   b = $random;	

	#20  a = $random;	
	#0   b = $random;	

	#20  a = $random;	
	#0   b = $random;	

	#20  a = $random;	
	#0   b = $random;	

	#20  a = $random;	
	#0   b = $random;	

	#20  a = $random;	
	#0   b = $random;	

	#20  a = $random;	
	#0   b = $random;	

	#20  a = $random;	
	#0   b = $random;	

	#20  a = $random;	
	#0   b = $random;	
	
     end
   
endmodule // tb