fenwei.vhd

max_plus开发的 有max_plus就可以直接运行的交通灯制作 用vhdl语言编写的

LIBRARY IEEE;
USE IEEE.Std_Logic_1164.ALL;
        
ENTITY Fenwei IS
PORT ( Numin: In Integer range 0 to 25 ;
       NumA,NumB: Out Integer range 0 to 9);
END  ;

ARCHITECTURE behavior OF Fenwei IS
BEGIN
  PROCESS(Numin)
  BEGIN
      IF Numin>=20 then
         NumA<=2;
         NumB<=Numin-20;
      elsif  Numin>=10 then
         NumA<=1;
         NumB<=Numin-10;
      else
         NumA<=0;
         NumB<=Numin;
      END IF;
  END PROCESS;
END ;