LIBRARY IEEE;
USE IEEE.STD_LOGIC_1164.ALL;
USE IEEE.STD_LOGIC_UNSIGNED.ALL; --库文件
ENTITY coute IS
PORT(reset,en,clk,clk2,trans:IN STD_LOGIC;
sel0,sel1,led:OUT STD_LOGIC;
y:OUT STD_LOGIC_VECTOR(6 DOWNTO 0));
END ENTITY coute; --实体
ARCHITECTURE rtl OF coute IS --构造体
SIGNAL stop,tran:STD_LOGIC;
SIGNAL ba:STD_LOGIC_VECTOR(1 DOWNTO 0); --定义信号
SIGNAL bcd,y0,y10,y100,y1000:STD_LOGIC_VECTOR(3 DOWNTO 0);
BEGIN
PROCESS(en)IS --暂停设置
BEGIN
IF(en 'EVENT AND en='1')THEN
IF(stop='1')THEN
stop<='0';
ELSE
stop<='1';
END IF;
END IF;
END PROCESS;
PROCESS(trans)IS --计数转换
BEGIN
IF(trans 'EVENT AND trans='1')THEN
IF(tran='1')THEN
tran<='0';
ELSE
tran<='1';
END IF;
END IF;
END PROCESS;
评论0