basys3/basys3.srcs/apu_note_to_frequency_tb.vhd


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library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;

library unisim;
use unisim.vcomponents.all;

entity apu_note_to_frequency_tb is
end entity;

architecture Behavioral of apu_note_to_frequency_tb is
	component apu_note_to_frequency is port(
		data: in std_logic_vector(7 downto 0);
		freq: out std_logic_vector(11 downto 0)); -- frequency
	end component;

	signal data: std_logic_vector(7 downto 0) := (others => '0');
	signal freq: std_logic_vector(11 downto 0) := (others => '0');

	signal ok: boolean := false;
begin
	uut: apu_note_to_frequency port map(
		data => data,
		freq => freq);
	
	tb: process
	begin
		for i in 0 to 255 loop
			data <= std_logic_vector(to_unsigned(i, 8));
			wait for 4 ps;
		end loop;
	end process;
end architecture;