1.四组参赛者在进行抢答时,当抢先者按下面前的按钮时,.docVIP

?1.四组参赛者在进行抢答时，当抢先者按下面前的按钮时，抢答器能准确判断出抢先者，并以声、光为标志。要求声响、光亮时间持续3秒后自动消失。??2.抢答器应具有互锁功能，某组抢答后能自动封锁其他各组进行抢答。??3.抢答器应具有限时（抢答时、回答问题时）功能。限时档次分别为5秒、10秒、15秒，时间到时应发出声响。同时，时间数据要用数码管显示出来。??4.抢答着犯规或违章（主持人未说开始抢答时，参赛者抢先按钮）时，应自动发出警告信号，以指示灯亮为标志。??5.系统有一个总复位开关。程序：library ieee;use ieee.std_logic_1164.all;use ieee.std_logic_unsigned.all;entity q2 is? ?port(i1,i2,i3,i4: in std_logic;? ?? ???reset : in std_logic;? ?? ?? ?? ???start : in std_logic;? ???? ?? ???clk? ?: in std_logic;? ???? ?? ???s5,s10,s15: in std_logic;??? ?? ?? ?sclk,clk2: buffer std_logic;? ?? ???sound : out std_logic; ? ?? ???show : out std_logic_vector(13 downto 0);??? ?? ?? ?? ?? ? rlight1,rlight2,rlight3,rlight4,glight1,glight2,glight3,glight4 : out std_logic:=0? ?? ???);end q2;architecture q2 of q2 istype state is??(state1,state2,state3,state4,state5);signal mystate:state;signal a,b,c,qd: std_logic;? ???signal t2,q : integer range 0 to 15;signal t1: integer range 0 to 3 ;signal counter1 : std_logic_vector(15 downto 0);? ?signal counter2: std_logic_vector(2 downto 0);beginprocess(clk)? ?? ?? ?? ?? ???beginif clkevent and clk=1 then? ? if counter1=1100001101010000 then? ?clk2=not clk2;counter1=0000000000000000;else??counter1=counter1+1;??end if;end if;end process;process(clk2)? ?? ?? ?? ?? ? beginif clk2event and clk2=1 then??if counter2=101 then? ? sclk=not sclk; counter2=000;??else? ?counter2=counter2+1;end if;end if;end process;process(reset,clk2)beginif reset=1 then? ?? ?? ? ??mystate=state1;rlight1=0;rlight2=0;rlight3=0;rlight4=0;glight1=0;glight2=0;glight3=0;glight4=0;a=0;??b=0;qd=0;else??if clk2event and clk2=1 then????case mystate is??when state1=? ?? ?? ?? ?? ?? ?? ? ? ?if s5=1??then t2=5;? ?? ?? ?? ?elsif(s10=1) then t2=10;? ???? ?elsif(s15=1) then t2=15;? ?end if;? ?if(i1=1and a=0) then rlight1=clk2;a=1;sound=1;? ???elsif(i2=1 and a=0)??then rlight2=clk2;a=1;sound=1;? ???elsif(i3=1 and a=0) thenrlight3=clk2;a=1;sound=