ex_p3_19_dff_proc.vhd

来自「This is the course for VHDL programming」· VHDL 代码 · 共 20 行

LIBRARY ieee;
USE ieee.std_logic_1164.ALL;
package package_procedure is -- package declaration
procedure dff (
signal d: in std_logic;
signal clk: in std_logic;
signal q: out std_logic);
end package package_procedure;

package body package_procedure is -- package body
      procedure dff (
         signal d: in std_logic;
         signal clk: in std_logic;
         signal q: out std_logic ) is
      begin
         if rising_edge(clk) then
            q <= d;
         end if;
      end procedure dff;
end package body package_procedure;