majority_voter.tdf

来自「用VHDL语言设计三人表决器 新建VHDL设计文件并保存 检查编译 波形仿」· TDF 代码 · 共 21 行

LIBRARY IEEE;
USE IEEE.STD_LOGIC_1164.ALL;

ENTITY majority_voter IS
   PORT(SW : IN std_logic_vector(3 DOWNTO 1);
        L : OUT std_logic_vector(2 DOWNTO 1));
        --L2 is a yellow LED AND L1 is a RED LED
END majority_voter;

ARCHITECTURE concurrent OF majority_voter IS

BEGIN
    WITH SW SELECT
      L <= "10" WHEN "011",
               "10"  WHEN "101", 
               "10"  WHEN "110", 
               "10"  WHEN "111", 
               "01" WHEN OTHERS;
  END concurrent;