deco10.vhd

来自「该程序是用VHDL语言实现的时钟程序」· VHDL 代码 · 共 29 行

LIBRARY IEEE;
USE IEEE.STD_LOGIC_1164.ALL;

ENTITY deco10 IS
	PORT(	sel		:	IN	STD_LOGIC_VECTOR(3 DOWNTO 0);
			disable	:	IN	STD_LOGIC;
			q		:	OUT	STD_LOGIC_VECTOR(7 DOWNTO 0)
		);
END deco10;

ARCHITECTURE func1 OF deco10 IS
SIGNAL tq : STD_LOGIC_VECTOR(7 DOWNTO 0);
BEGIN
	WITH SEL SELECT
	tq<="00111111" WHEN "0000",
		"00000110" WHEN "0001",
		"01011011" WHEN "0010",
		"01001111" WHEN "0011",
		"01100110" WHEN "0100",
		"01101101" WHEN "0101",
		"01111101" WHEN "0110",
		"00100111" WHEN "0111",
		"01111111" WHEN "1000",
		"01101111" WHEN "1001",
		"00000000" WHEN OTHERS;
	q <= tq WHEN disable = '0' ELSE
		"00000000";
END func1;