LCMXO2-400HC >> VHDL

Parallel


參考資訊:
1. basic

程式如下:

library ieee;
use ieee.numeric_std.all;
use ieee.std_logic_1164.all;
use ieee.std_logic_unsigned.all;
 
entity main is
  port(
    clk: in std_logic;
    sw: in unsigned(3 downto 0);
    rgb: out unsigned(2 downto 0));
end main;
  
architecture logic of main is
signal clk_div:integer:=1;
signal clk_cnt:integer:=0;
signal rgb_cnt:unsigned(2 downto 0):=(others => '0');
 
begin
  process(clk) is
  begin
    if (clk'event and clk = '1') then
      clk_cnt<= clk_cnt + 1;
      if clk_cnt > (12000000 / clk_div) then
        clk_cnt<= 0;
        rgb_cnt<= rgb_cnt + 1;
        rgb<= rgb_cnt;
      end if;
    end if;
  end process;
   
  process(sw) is
  begin
    clk_div<= to_integer(sw) + 1;
  end process;
end logic;

當觸發條件成立,兩個各別的副程式可以同時執行,這也是FPGA平行處理的觀念,因為它的形式是硬體電路

腳位


完成


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