key.vhd

key code,for thinx cpld

LIBRARY IEEE;                        --库调用
USE IEEE.STD_LOGIC_1164.ALL;        --程序包调用
ENTITY key IS                    --实体说明
	     PORT(  a : IN   std_logic;       --端口定义
		        b : IN   std_logic;
		        c : IN   std_logic;
		        d : IN   std_logic;
		        e : IN   std_logic;
		        f : IN   std_logic;
		        g : IN   std_logic;
		        h : IN   std_logic;
			aa : OUT std_logic;
			bb:  OUT std_logic;
			cc:  OUT std_logic;
			dd:  OUT std_logic;
			ee:  OUT std_logic;
			ff:  OUT std_logic;
			gg:  OUT std_logic;
			hh:  OUT std_logic
			);
END key;
ARCHITECTURE a OF key IS      --结构体描述
BEGIN 
   PROCESS(a,b,c,d,e,f,g,h)
	BEGIN 
	   aa<=a;
	   bb<=b;
	   cc<=c;
	   dd<=d;
	   ee<=e;
	   ff<=f;
   	   gg<=g;
	   hh<=h;
	END PROCESS;
END a;