wan_mux.vhd

来自「此为一用VHDL编写的硬件游戏程序」· VHDL 代码 · 共 16 行

library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_unsigned.all;
use ieee.std_logic_arith.all;
entity wan_mux is
port (sel :in std_logic;
      d00,d01,d02,d03,d04,d05,d06,d07,d10,d11,d12,d13,d14,d15,d16,d17 :in std_logic;
      rst :out std_logic_vector(7 downto 0));
end wan_mux;
architecture behave of wan_mux is
begin
  with sel select
     rst<= d07&d06&d05&d04&d03&d02&d01&d00 when'0',
           d17&d16&d15&d14&d13&d12&d11&d10 when others;
end behave;