trin.vhd

来自「一本很好的关于学习VHDL的书,Fundamentals of Digital 」· VHDL 代码 · 共 15 行

LIBRARY ieee ;
USE ieee.std_logic_1164.all ;

ENTITY trin IS
	GENERIC ( N : INTEGER := 8 ) ;
	PORT (	X 	: IN 	STD_LOGIC_VECTOR(N-1 DOWNTO 0) ;
			E	: IN 	STD_LOGIC ;
			F	: OUT 	STD_LOGIC_VECTOR(N-1 DOWNTO 0) ) ;
END trin ;

ARCHITECTURE Behavior OF trin IS	
BEGIN
	F <= (OTHERS => 'Z') WHEN E = '0' ELSE X ;
END Behavior ;