pause.vhd

来自「洗衣机控制器」· VHDL 代码 · 共 26 行

LIBRARY ieee;
USE ieee.std_logic_1164.all;
USE ieee.std_logic_signed.all;

ENTITY pause IS
  PORT(   run:IN std_logic;
        pause:IN std_logic;
           ps:OUT std_logic
       );
END;

ARCHITECTURE status of pause IS
SIGNAL p:std_logic;

BEGIN 
PROCESS(pause)
   BEGIN
     IF(run='0')THEN
       p<='0'; 
     ELSE IF(pause'event and pause='1')THEN
        p<=not p;
     END IF;END IF;
  END PROCESS;
  ps<=p;
END;