display.vhd

用max+plusII编写的vhdl程序 乒乓球游戏机

LIBRARY	IEEE;
USE	IEEE.STD_LOGIC_1164.ALL;
USE	IEEE.STD_LOGIC_ARITH.ALL;
USE	IEEE.STD_LOGIC_UNSIGNED.ALL;

ENTITY display	IS
PORT( bcdin:IN STD_LOGIC_VECTOR(3 DOWNTO 0);
	displaycode:OUT STD_LOGIC_VECTOR(6 DOWNTO 0)
	);
END	 display;

ARCHITECTURE behave	OF display 	IS
BEGIN
WITH bcdin	SELECT
displaycode<="0111111"	WHEN	"0000",
			 "0000110"	WHEN	"0001",
			 "1011011"	WHEN	"0010",
			 "1001111"	WHEN	"0011",
			 "1100110"	WHEN	"0100",
			 "1101101"	WHEN	"0101",
			 "1111101"	WHEN	"0110",
			 "0100111"	WHEN	"0111",
		  	 "1111111"	WHEN	"1000",
		  	 "1101111"	WHEN	"1001",
		  	 "1001111"  	WHEN    OTHERS;
END	behave;