源代码如下自己把各个模块打好包下面有个图?自己看看
LIBRARY?IEEE;
USE?IEEE.STD_LOGIC_1164.ALL;
USE?IEEE.STD_LOGIC_UNSIGNED.ALL;
ENTITY?TZKZQ?IS
PORT(KEY:?IN?STD_LOGIC_VECTOR(1?DOWNTO?0);?--按键信号
CLK_KEY:?IN?STD_LOGIC;?--键盘扫描信号
MAX_DAYS:IN?STD_LOGIC_VECTOR(4?DOWNTO?0);--本月最大天数
SEC_EN,MIN_EN,HOUR_EN,DAY_EN,MON_EN,YEAR_EN,WEEK_EN:OUT?STD_LOGIC;?--异步并行置位使能
HOUR_CUR:IN?STD_LOGIC_VECTOR(4?DOWNTO?0);?
MIN_CUR,SEC_CUR:IN?STD_LOGIC_VECTOR(5?DOWNTO?0);
YEAR_CUR:IN?STD_LOGIC_VECTOR(6?DOWNTO?0);
MON_CUR?:IN?STD_LOGIC_VECTOR(3?DOWNTO?0);
DAY_CUR?:IN?STD_LOGIC_VECTOR(4?DOWNTO?0);
WEEK_CUR:IN?STD_LOGIC_VECTOR(2?DOWNTO?0);
SEC,MIN:BUFFER?STD_LOGIC_VECTOR(5?DOWNTO?0);
HOUR:BUFFER?STD_LOGIC_VECTOR(4?DOWNTO?0);?
DAY?:BUFFER?STD_LOGIC_VECTOR(4?DOWNTO?0);
MON?:BUFFER?STD_LOGIC_VECTOR(3?DOWNTO?0);
YEAR:BUFFER?STD_LOGIC_VECTOR(6?DOWNTO?0);
WEEK:BUFFER?STD_LOGIC_VECTOR(2?DOWNTO?0));
END?ENTITY?TZKZQ;
ARCHITECTURE?ART?OF?TZKZQ?IS
TYPE?STATETYPE?IS?(NORMAL,SEC_SET,MIN_SET,HOUR_SET,DAY_SET,MON_SET,
YEAR_SET,WEEK_SET);
SIGNAL?MODE:STATETYPE;
BEGIN
PROCESS(KEY,CLK_KEY)
BEGIN?
IF?CLK_KEY'EVENT?AND?CLK_KEY='1'?THEN
IF?KEY="01"?THEN?
SEC_EN<='1';MIN_EN<='1';HOUR_EN<='1';
DAY_EN<='1';MON_EN<='1';YEAR_EN<='1';
WEEK_EN<='1';
CASE?MODE?IS?
WHEN?NORMAL?=>MODE<=SEC_SET;SEC<=SEC_CUR;SEC_EN<='0';
WHEN?SEC_SET?=>?MODE<=MIN_SET;MIN<=MIN_CUR;SEC_EN<='1';MIN_EN<='0';?
WHEN?MIN_SET?=>?MODE<=HOUR_SET;HOUR<=HOUR_CUR;MIN_EN<='1';HOUR_EN<='0';
WHEN?HOUR_SET=>?MODE<=DAY_SET;DAY<=DAY_CUR;HOUR_EN<='1';DAY_EN<='0';
WHEN?DAY_SET?=>?MODE<=MON_SET;MON<=MON_CUR;DAY_EN<='1';MON_EN<='0';
WHEN?MON_SET?=>?MODE<=YEAR_SET;YEAR<=YEAR_CUR;?MON_EN<='1';
YEAR_EN<='0';
WHEN?YEAR_SET?=>?MODE<=WEEK_SET;WEEK<=WEEK_CUR;YEAR_EN<='1';WEEK_EN<='0';
WHEN?WEEK_SET?=>?MODE<=NORMAL;
END?CASE;
ELSIF?KEY="10"?THEN--如果按下调整键，则自加?
CASE?MODE?IS
WHEN?SEC_SET?=>?SEC_EN<='0';
--异步并行置位使能有效
IF?SEC="111011"?THEN?SEC<="000000";
--如果秒计数到59，返回到0重新计数
ELSE?SEC<=SEC+1;?--否则继续计数
END?IF;
WHEN?MIN_SET?=>?MIN_EN<='0';
IF?MIN="111011"?THEN?MIN<="000000";
ELSE?MIN<=MIN+1;?
END?IF;
WHEN?HOUR_SET=>?HOUR_EN<='0';
IF?HOUR="11000"?THENHOUR<="00000";
ELSE?HOUR<=HOUR+1;
END?IF;
WHEN?DAY_SET?=>?DAY_EN<='0';
IF?DAY=MAX_DAYS?THEN?DAY<="00001";
ELSE?DAY<=DAY+1;
END?IF;
WHEN?WEEK_SET=>?WEEK_EN<='0';
IF?WEEK="111"?THEN?WEEK<="001";
ELSE?WEEK<=WEEK+1;
END?IF;
WHEN?OTHERS=>NULL;
END?CASE;
END?IF;
END?IF;
END?PROCESS;
END?ARCHITECTURE?ART;
LIBRARY?IEEE;
USE?IEEE.STD_LOGIC_1164.ALL;
USE?IEEE.STD_LOGIC_UNSIGNED.ALL;
ENTITY?CNT60?IS?
PORT(LD:?IN?STD_LOGIC;?
CLK:?IN?STD_LOGIC;?
data:?IN?STD_LOGIC_VECTOR(5?DOWNTO?0);?
NUM:?BUFFER?STD_LOGIC_VECTOR(5?DOWNTO?0);?
CO:?OUT?STD_LOGIC);
END?ENTITY?CNT60;
ARCHITECTURE?ART?OF?CNT60?IS
BEGIN
PROCESS(CLK,LD)?IS
BEGIN
IF(LD='0')?THEN
NUM<=DATA;?
ELSIF?CLK'EVENT?AND?CLK='1'?THEN
IF?NUM="111011"?THEN?--59
NUM<="000000";CO<='1';
ELSE?
NUM<=NUM+1;CO<='0';
END?IF;
END?IF;
END?PROCESS;
END?ARCHITECTURE?ART;
LIBRARY?IEEE;
USE?IEEE.STD_LOGIC_1164.ALL;
USE?IEEE.STD_LOGIC_UNSIGNED.ALL;
ENTITY?CNT60?IS?
PORT(LD:?IN?STD_LOGIC;?
CLK:?IN?STD_LOGIC;?
data:?IN?STD_LOGIC_VECTOR(5?DOWNTO?0);?
NUM:?BUFFER?STD_LOGIC_VECTOR(5?DOWNTO?0);?
CO:?OUT?STD_LOGIC);
END?ENTITY?CNT60;
ARCHITECTURE?ART?OF?CNT60?IS
BEGIN
PROCESS(CLK,LD)?IS
BEGIN
IF(LD='0')?THEN
NUM<=DATA;?
ELSIF?CLK'EVENT?AND?CLK='1'?THEN
IF?NUM="111011"?THEN?--59
NUM<="000000";CO<='1';
ELSE?
NUM<=NUM+1;CO<='0';
END?IF;
END?IF;
END?PROCESS;
END?ARCHITECTURE?ART;
LIBRARY?IEEE;
USE?IEEE.STD_LOGIC_1164.ALL;
USE?IEEE.STD_LOGIC_UNSIGNED.ALL;
ENTITY?CNT24?IS?
PORT(LD:?IN?STD_LOGIC;?
CLK:?IN?STD_LOGIC;?
data:?IN?STD_LOGIC_VECTOR(4?DOWNTO?0);?
NUM:?BUFFER?STD_LOGIC_VECTOR(4?DOWNTO?0);?
CO:?OUT?STD_LOGIC);
END?ENTITY?CNT24;
ARCHITECTURE?ART?OF?CNT24?IS
BEGIN
PROCESS(CLK,LD)?IS
BEGIN
IF(LD='0')?THEN
NUM<=DATA;?
ELSIF?CLK'EVENT?AND?CLK='1'?THEN
IF?NUM="11000"?THEN?--24
NUM<="00000";CO<='1';
ELSE?
NUM<=NUM+1;CO<='0';
END?IF;
END?IF;
END?PROCESS;
END?ARCHITECTURE?ART;
LIBRARY?IEEE;
USE?IEEE.STD_LOGIC_1164.ALL;
USE?IEEE.STD_LOGIC_UNSIGNED.ALL;
ENTITY?CNT30?IS
PORT(LD:IN?STD_LOGIC;?
CLK:IN?STD_LOGIC;
NIAN:IN?STD_LOGIC_VECTOR(6?DOWNTO?0);?
【数字钟设计】
YUE?:IN?STD_LOGIC_VECTOR(3?DOWNTO?0);?
data:IN?STD_LOGIC_VECTOR(4?DOWNTO?0);?
NUM:BUFFER?STD_LOGIC_VECTOR(4?DOWNTO?0);
MAX_DAYS:OUT?STD_LOGIC_VECTOR(4?DOWNTO?0);
CO:OUT?STD_LOGIC);
END?ENTITY?CNT30;
ARCHITECTURE?ART?OF?CNT30?IS
SIGNAL?TOTAL_DAYS:STD_LOGIC_VECTOR(4?DOWNTO?0);
BEGIN
PROCESS(CLK,LD)?IS
VARIABLE?IS_RUNNIAN:STD_LOGIC;
BEGIN
CASE?NIAN?IS?
WHEN?"0000000"?=>?IS_RUNNIAN:='1';?--0?
WHEN?"0000100"?=>?IS_RUNNIAN:='1';--4
WHEN?"0001000"?=>?IS_RUNNIAN:='1';--8
WHEN?"0001100"?=>?IS_RUNNIAN:='1';--12
WHEN?"0010000"?=>?IS_RUNNIAN:='1';--16
WHEN?"0010100"?=>?IS_RUNNIAN:='1';--20
WHEN?"0011000"?=>?IS_RUNNIAN:='1';--24
WHEN?"0011100"?=>?IS_RUNNIAN:='1';--28
WHEN?"0100000"?=>?IS_RUNNIAN:='1';--32
WHEN?"0100100"?=>?IS_RUNNIAN:='1';--36
WHEN?"0101000"?=>?IS_RUNNIAN:='1';--40
WHEN?"0101100"?=>?IS_RUNNIAN:='1';--44
WHEN?"0110000"?=>?IS_RUNNIAN:='1';--48
WHEN?"0110100"?=>?IS_RUNNIAN:='1';--52
WHEN?"0111000"?=>?IS_RUNNIAN:='1';--56
WHEN?"0111100"?=>?IS_RUNNIAN:='1';--60
WHEN?"1000000"?=>?IS_RUNNIAN:='1';--64
WHEN?"1000100"?=>?IS_RUNNIAN:='1';--68
WHEN?"1001000"?=>?IS_RUNNIAN:='1';--72
WHEN?"1001100"?=>?IS_RUNNIAN:='1';--76
WHEN?"1010000"?=>?IS_RUNNIAN:='1';--80
WHEN?"1010100"?=>?IS_RUNNIAN:='1';--84
WHEN?"1011000"?=>?IS_RUNNIAN:='1';--88
WHEN?"1011100"?=>?IS_RUNNIAN:='1';--92
WHEN?"1100000"?=>?IS_RUNNIAN:='1';--96
WHEN?OTHERS=>?IS_RUNNIAN:='0';
END?CASE;
CASE?YUE?IS
WHEN?"0001"=>?TOTAL_DAYS<="11111";?--1
WHEN?"0011"=>?TOTAL_DAYS<="11111";--3
WHEN?"0101"=>?TOTAL_DAYS<="11111";--5
WHEN?"0111"=>?TOTAL_DAYS<="11111";--7
WHEN?"1000"=>?TOTAL_DAYS<="11111";--8
WHEN?"1010"=>?TOTAL_DAYS<="11111";--10
WHEN?"1100"=>?TOTAL_DAYS<="11111";--12
WHEN?"0100"=>?TOTAL_DAYS<="11110";--4
WHEN?"0110"=>?TOTAL_DAYS<="11110";--6
WHEN?"1001"=>?TOTAL_DAYS<="11110";--9
WHEN?"1011"=>?TOTAL_DAYS<="11110";--11
WHEN?"0010"=>
IF?(IS_RUNNIAN='1')?THEN?
TOTAL_DAYS<="11101";
ELSE?
TOTAL_DAYS<="11100";?
END?IF;
WHEN?OTHERS=>NULL;
END?CASE;
IF(LD='0')?THEN
NUM<=DATA;?
ELSIF?CLK'EVENT?AND?CLK='1'?THEN
MAX_DAYS<=TOTAL_DAYS;
IF?NUM=TOTAL_DAYS?THEN--99
NUM<="00001";CO<='1';
ELSE
NUM<=NUM+1;CO<='0';
END?IF;
END?IF;
END?PROCESS;
END?ARCHITECTURE?ART;
LIBRARY?IEEE;
USE?IEEE.STD_LOGIC_1164.ALL;
USE?IEEE.STD_LOGIC_UNSIGNED.ALL;
ENTITY?CNT7?IS?
PORT(LD:?IN?STD_LOGIC;?
CLK:?IN?STD_LOGIC;?
data:?IN?STD_LOGIC_VECTOR(2?DOWNTO?0);?
NUM:?BUFFER?STD_LOGIC_VECTOR(2?DOWNTO?0));
END?ENTITY?CNT7;
ARCHITECTURE?ART?OF?CNT7?IS
BEGIN
PROCESS(CLK,LD)?IS
BEGIN
IF(LD='0')?THEN
NUM<=DATA;?
ELSIF?CLK'EVENT?AND?CLK='1'?THEN
IF?NUM="111"?THEN?--7
NUM<="000";
ELSE?
NUM<=NUM+1;
END?IF;
END?IF;
END?PROCESS;
END?ARCHITECTURE?ART;
LIBRARY?IEEE;
USE?IEEE.STD_LOGIC_1164.ALL;
USE?IEEE.STD_LOGIC_UNSIGNED.ALL;
ENTITY?CNT12?IS?
PORT(LD:?IN?STD_LOGIC;?
CLK:?IN?STD_LOGIC;?
data:?IN?STD_LOGIC_VECTOR(3?DOWNTO?0);?
NUM:?BUFFER?STD_LOGIC_VECTOR(3?DOWNTO?0);?
CO:?OUT?STD_LOGIC);
END?ENTITY?CNT12;
ARCHITECTURE?ART?OF?CNT12?IS
BEGIN
PROCESS(CLK,LD)?IS
BEGIN
IF(LD='0')?THEN
NUM<=DATA;?
ELSIF?CLK'EVENT?AND?CLK='1'?THEN
IF?NUM="1100"?THEN?--12
NUM<="0000";CO<='1';
ELSE?
NUM<=NUM+1;CO<='0';
END?IF;
END?IF;
END?PROCESS;
END?ARCHITECTURE?ART;
LIBRARY?IEEE;
USE?IEEE.STD_LOGIC_1164.ALL;
USE?IEEE.STD_LOGIC_UNSIGNED.ALL;
ENTITY?CNT99?IS?
PORT(LD:?IN?STD_LOGIC;?
CLK:?IN?STD_LOGIC;?
data:?IN?STD_LOGIC_VECTOR(6?DOWNTO?0);?
NUM:?BUFFER?STD_LOGIC_VECTOR(6?DOWNTO?0));
END?ENTITY?CNT99;
ARCHITECTURE?ART?OF?CNT99?IS
BEGIN
PROCESS(CLK,LD)?IS
BEGIN
IF(LD='0')?THEN
NUM<=DATA;?
ELSIF?CLK'EVENT?AND?CLK='1'?THEN
IF?NUM="1100011"?THEN?--12
NUM<="0000000";
ELSE?
NUM<=NUM+1;
END?IF;
END?IF;
END?PROCESS;
END?ARCHITECTURE?ART;
我看着好像意思是有一个同步的置位 。
一般的reset信号都是异步的 。很少用同步的复位 。如果你确实是想要同步复位 ， 那不用管这个warn 。可能你的原本意思也是异步复位 ， 但是你的代码中写错了 。
一般的同步复位就是process的敏感变量中没有reset 。

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