random.vhd

来自「用于视频运动图像编码的HUFFMAN编码」· VHDL 代码 · 共 26 行

---------      电子系                 学号：J02301                姓名：张宗旺----
library ieee;
	use ieee.std_logic_1164.all;
	use ieee.std_logic_arith.all;
	use ieee.std_logic_unsigned.all;

entity RANDOM_GENERATOR is
	port	(CLK: in std_logic;
		RANDOM_OUT: buffer std_logic_vector(7 downto 0));
end RANDOM_GENERATOR;

architecture ALG of RANDOM_GENERATOR is
	signal RANDOMV:integer range 0 to 255;
	begin
	process(CLK)
	
	begin 
		if CLK'event and CLK='1' then 
		
			RANDOMV<=(RANDOMV*3 + 16#51#) mod 16#100#;
		end if;
		
	end process;
	RANDOM_OUT<=conv_std_logic_vector(RANDOMV,8);
end ALG;