func3.vhd

来自「<数字逻辑与VHDL设计>代码 作者：STEPHEN BROWN」· VHDL 代码 · 共 17 行

LIBRARY ieee ;
USE ieee.std_logic_1164.all ;

ENTITY func3 IS 
	PORT ( 	x1, x2, x3 	: IN 	STD_LOGIC ; 
			f 			: OUT	STD_LOGIC ) ; 
END func3 ; 

ARCHITECTURE LogicFunc OF func3 IS 
BEGIN  
	f <= 	(NOT x1 AND NOT x2 AND NOT x3) OR 
			(NOT x1 AND x2 AND NOT x3) OR 
			(x1 AND NOT x2 AND NOT x3) OR
			(x1 AND NOT x2 AND x3) OR 
			(x1 AND x2 AND NOT x3) ;
END LogicFunc ;