dfftest.vhd

来自「用于视频运动图像编码的HUFFMAN编码」· VHDL 代码 · 共 55 行

---------      电子系                 学号：J02301                姓名：张宗旺----

library ieee;
use ieee.std_logic_1164.all;


entity TESTBENCH2 is
end TESTBENCH2;


architecture WAVER of TESTBENCH2 is

component D_FF
	port	(CLK,RST,SET,D:in std_logic;
		Q:out std_logic);
end component;


signal CLK,RST,SET,D,Q: std_logic;
for all :D_FF use entity work.D_FF(ALG);

begin 
	D_FF_1: D_FF port map(CLK,RST,SET,D,Q); 
	RST<='0' after 10 ns,'1' after 100 ns;
	set<='1'after 100 ns,'0' after 200 ns,'1' after 250 ns;
	
	CLK_WAVER: process
	begin 
		CLK<='1';
		wait for 20 ns;
		while true loop
		CLK<='1';
		wait for 20 ns;
		CLK<='0';
		wait for 50 ns;
		end loop;
		
		assert false
		report "---end---"
		severity error;
	end process;
	
	DATA_WAVER: process
	begin 
		D<='1';
		wait for 100 ns;
		D<='0';
		wait for 100 ns;
	end process;
end WAVER;