func2.vhd

来自「一本很好的关于学习VHDL的书,Fundamentals of Digital 」· VHDL 代码 · 共 16 行

LIBRARY ieee ;
USE ieee.std_logic_1164.all ;

ENTITY func2 IS 
	PORT ( 	x1, x2, x3 	: IN 	STD_LOGIC ; 
			f 			: OUT	STD_LOGIC ) ; 
END func2 ; 

ARCHITECTURE LogicFunc OF func2 IS 
BEGIN 
	f <=	(NOT x1 AND NOT x2 AND 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 ;