singt.vhd

这是一个正弦信号发生器

library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_unsigned.all;
entity singt is
  port(clk:in std_logic;
       dout:out std_logic_vector(7 downto 0));
end;
architecture dacc of singt is
 component mm
   port(address:in std_logic_vector(5 downto 0);
        clock:in std_logic;
        q:out std_logic_vector(7 downto 0));
end component;
   signal q1:std_logic_vector(5 downto 0);
 begin
  process(clk)
   begin
    if clk'event and clk='1' then q1<=q1+1;
     end if;
   end process;
u1:mm port map(address=>q1,q=>dout,clock=>clk);
end;