?? cnt05s.vhd
字號:
LIBRARY IEEE;
USE IEEE.STD_LOGIC_1164.ALL;
USE IEEE.STD_LOGIC_UNSIGNED.ALL;
ENTITY CNT05S IS
PORT(CLK,EN05M,EN05B:IN STD_LOGIC;
DOUT5:OUT STD_LOGIC_VECTOR(7 DOWNTO 0));
END CNT05S;
ARCHITECTURE art OF CNT05S IS
SIGNAL CNT3B:STD_LOGIC_VECTOR(2 DOWNTO 0);
BEGIN
PROCESS(CLK,EN05M,EN05B)IS
BEGIN
IF CLK'EVENT AND CLK='1'THEN
IF CNT3B="100"THEN
CNT3B<="000";
ELSIF EN05M='1'OR EN05B='1'THEN
CNT3B<=CNT3B+1;
ELSE
CNT3B<=CNT3B-CNT3B-1;
END IF;
END IF;
END PROCESS;
PROCESS(CNT3B)IS
BEGIN
CASE CNT3B IS
WHEN "000"=>DOUT5<="00000101";
WHEN "001"=>DOUT5<="00000100";
WHEN "010"=>DOUT5<="00000011";
WHEN "011"=>DOUT5<="00000010";
WHEN "100"=>DOUT5<="00000001";
WHEN OTHERS=>DOUT5<= "00000000";
END CASE;
END PROCESS;
END art;
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -