Simple Combinational Circuit VHDL .txt

## SIMPLE COMBINATIONAL CIRCUIT IMPLEMENTATION FOR BEGINEERS  


library IEEE;
use IEEE.std_logic_1164.all;
use IEEE.numeric_std.all;
use IEEE.std_logic_unsigned.all;
entity masterswitch is
Port (Msw: in std_logic;
sw1: in std_logic;
sw2: in std_logic;
LED1: out std_logic;
LED2: out std_logic );
end masterswitch;
architecture Behavioral of masterswitch is
begin
LED1 <= Msw And sw1;
LED2 <= Msw And sw2;
end Behavioral;

Test Bench Code:
library IEEE;
use IEEE.std_logic_1164.all;
use IEEE.numeric_std.all;
use IEEE.std_logic_unsigned.all;
entity tb_msw is
end tb_msw;
architecture Behavioral of tb_msw is
-- Component Declaration for the Unit Under Test (UUT)
 COMPONENT masterswitch
 Port (Msw: in std_logic;
sw1: in std_logic;
sw2: in std_logic;
LED1: out std_logic;
LED2: out std_logic );
 END COMPONENT;
--Inputs
signal Msw : std_logic := '0';
signal sw1 : std_logic := '0';
signal sw2 : std_logic := '0';
--Outputs
signal LED1 : std_logic;
signal LED2 : std_logic;
begin
-- Instantiate the Unit Under Test (UUT)
uut: masterswitch PORT MAP (
Msw => Msw,
sw1 => sw1,
sw2 => sw2,
LED1 => LED1,
LED2 => LED2
); 
-- Stimulus process
stim_proc: process
begin
Msw<='0';sw1<='0';sw2<='0';
wait for 100ns;
Msw<='0';sw1<='0';sw2<='1';
wait for 100ns;
Msw<='0';sw1<='1';sw2<='0';
wait for 100ns;
Msw<='0';sw1<='1';sw2<='1';
wait for 100ns;
Msw<='1';sw1<='0';sw2<='0';
wait for 100ns;
Msw<='1';sw1<='0';sw2<='1';
wait for 100ns;
Msw<='1';sw1<='1';sw2<='0';
wait for 100ns;
Msw<='1';sw1<='1';sw2<='1';
wait for 100ns;
end process;
END;

Constraints:

For Inputs:
set_property PACKAGE_PIN V16 [get_ports {sw1}]					
	set_property IOSTANDARD LVCMOS33 [get_ports {sw1}]
set_property PACKAGE_PIN W16 [get_ports {sw2}]					
	set_property IOSTANDARD LVCMOS33 [get_ports {sw2}]
set_property PACKAGE_PIN W17 [get_ports {Msw}]					
	set_property IOSTANDARD LVCMOS33 [get_ports {Msw}]

For Outputs:
set_property PACKAGE_PIN U16 [get_ports {LED1}]					
	set_property IOSTANDARD LVCMOS33 [get_ports {LED1}]
set_property PACKAGE_PIN E19 [get_ports {LED2}]					
	set_property IOSTANDARD LVCMOS33 [get_ports {LED2}]