📄 program-s.vhd
字号:
library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_unsigned.all;
entity newsecond is
port (clk,reset,clk1:in std_logic;
setmin : in std_logic :='0';
Lsec,Hsec: out std_logic_vector(3 downto 0);
carry: out std_logic);
end newsecond;
architecture t1 of newsecond is
signal sect1: std_logic_vector(3 downto 0);
signal sect2 : std_logic_vector(3 downto 0);
--signal delay_counter : std_logic_vector(24 downto 0):="0000000000000000000000000";
begin
process(reset,clk)
begin
if reset='1' then
sect1<="0000";
sect2<="0000";
elsif setmin='1' then
carry<=clk1;
-- delay_counter<=(others=>'0');
elsif (clk'event and clk='1') then
-- if delay_counter="1111111111111111111111111" then
-- delay_counter<=(others=>'0');--------this is very iportant being here---------------------------------
if sect1="1001" then
sect1<="0000";
-- not to be here delay_counter<=(others=>'0');
if sect2="0101" then
sect2<="0000";
else
sect2<=sect2+1;
end if;
else
sect1<=sect1+1;
end if;
-- else
-- delay_counter <= delay_counter+1;
-- end if;
if (sect1="1001" and sect2="0101") then
carry<='1';
else
carry<='0';
end if;
end if;
end process;
Lsec<=sect1;
Hsec<=sect2;
end t1;
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -