VHDL-kieli FPGA-suunnittelussa/Dekooderi

VHDL-kieli FPGA-suunnittelussa

Lue ensin Digitaalipiirit / Enkooderit ja dekooderit (Encoders-Decoders)

Dekooderi

VHDL toteutus

library IEEE;
use IEEE.STD_LOGIC_1164.ALL;

entity dekooderi_3_8_EN is
    Port ( A0 : in std_logic;
           A1 : in std_logic;
           A2 : in std_logic;
           EN : in std_logic;
           D0 : out std_logic;
           D1 : out std_logic;
           D2 : out std_logic;
           D3 : out std_logic;
           D4 : out std_logic;
           D5 : out std_logic;
           D6 : out std_logic;
           D7 : out std_logic);
end dekooderi_3_8_EN;

architecture Beh of dekooderi_3_8_EN is
begin
   D0 <= not A2 and not A1 and not A0 and EN;
   D1 <= not A2 and not A1 and A0 and EN;
   D2 <= not A2 and A1 and not A0 and EN;
   D3 <= not A2 and A1 and A0 and EN;
   D4 <= A2 and not A1 and not A0 and EN;
   D5 <= A2 and not A1 and A0 and EN;
   D6 <= A2 and A1 and not A0 and EN;
   D7 <= A2 and A1 and A0 and EN;
end Beh;

Simulaatiotulos