match_or_inv_tb.v

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// baeckler - 02-23-2006

module match_or_inv_tb ();

parameter WIDTH = 8;

reg [WIDTH-1:0] ra;
reg [WIDTH-1:0] rb;
wire m;
reg fail = 0;

reg gold;

match_or_inv moi (
	.bus_a(ra),
	.bus_b(rb),
	.match_or_inv (m)
);
defparam moi .WIDTH = WIDTH;

always @(ra or rb) begin
  gold = (ra == rb) || (ra == ~rb);
end

initial begin
  ra = 0;
  rb = 0;
  fail = 0;

#100000
  if (!fail) $display ("PASS");

  $stop();
end

always begin
  #10 ra = $random;
  rb = $random;
  #10 if (m != gold) begin
	$display ("Mismatch at time %d",$time);
	fail = 1;
  end
end

endmodule