EPM240T100C5N >> VHDL

Clock

---

程式如下：

library ieee;
use ieee.std_logic_1164.all;
   
entity main is
  port(
    clk: in bit;
    seg_out: out bit_vector(8 downto 0));
end main;
   
architecture logic of main is
signal seg_cnt:integer:=0;
signal clk_cnt:integer:=0;
type seg_type is array (0 to 9) of bit_vector(8 downto 0);
constant seg_def:seg_type:=(
  "000111111", "000000110", "001011011", "001001111", "001100110", 
  "001101101", "001111101", "000000111", "001111111", "001101111");
  
begin
  process(clk) is
  begin
    if (clk'event and clk = '1') then
      clk_cnt<= clk_cnt + 1;

      if (clk_cnt >= 50000000) then
        clk_cnt<= 0;
        seg_out<= not seg_def(seg_cnt);
        seg_cnt<= seg_cnt + 1;
      end if;
    end if;
   
    if (seg_cnt >= 10) then
      seg_cnt<= 0;
    end if;
  end process;
end logic;

腳位


完成

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