xskz.vhd

来自「交通灯控制系统VHDL源码」· VHDL 代码 · 共 25 行

LIBRARY IEEE;
USE IEEE.STD_LOGIC_1164.ALL;
USE IEEE.STD_LOGIC_UNSIGNED.ALL;

ENTITY XSKZ IS
  PORT(EN45,EN25,EN05M,EN05B:IN STD_LOGIC;
       AIN45M,AIN45B,AIN25M,AIN25B,AIN05:IN STD_LOGIC_VECTOR(7 DOWNTO 0);
       DOUTM,DOUTB:OUT STD_LOGIC_VECTOR(7 DOWNTO 0));
END ENTITY XSKZ;

ARCHITECTURE ART OF XSKZ IS
  BEGIN
  PROCESS(EN45,EN25,EN05M,EN05B,AIN45M,AIN45B,AIN25M,AIN25B,AIN05) IS
    BEGIN
    IF EN45='1' THEN DOUTM<=AIN45M(7 DOWNTO 0);DOUTB<=AIN45B(7 DOWNTO 0);
    ELSIF EN05M='1' THEN DOUTM<=AIN05(7 DOWNTO 0);DOUTB<=AIN05(7 DOWNTO 0);
    ELSIF EN25='1' THEN DOUTM<=AIN25M(7 DOWNTO 0);DOUTB<=AIN25B(7 DOWNTO 0);
    ELSIF EN05B='1' THEN DOUTM<=AIN05(7 DOWNTO 0);DOUTB<=AIN05(7 DOWNTO 0);
    END IF;
  END PROCESS;
END ARCHITECTURE ART;