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-------------------------------------------------------------------------------
-- Module : t_mux2to1
-------------------------------------------------------------------------------
-- Author : <haf@fh-augsburg.de>
-- Company : University of Applied Sciences Augsburg
-- Copyright (c) 2011 <haf@fh-augsburg.de>
-------------------------------------------------------------------------------
-- Description: Testbench for design "mux2to1"
-------------------------------------------------------------------------------
-- Revisions : see end of file
-------------------------------------------------------------------------------
LIBRARY ieee;
USE ieee.std_logic_1164.ALL;
-------------------------------------------------------------------------------
ENTITY t_mux2to1 IS
END t_mux2to1;
-------------------------------------------------------------------------------
ARCHITECTURE tbench OF t_mux2to1 IS
COMPONENT mux2to1
PORT (
a_i : IN std_ulogic;
b_i : IN std_ulogic;
sel_i : IN std_ulogic;
y_o : OUT std_ulogic);
END COMPONENT;
-- definition of a clock period
CONSTANT period : time := 10 ns;
-- component ports
SIGNAL a_i : std_ulogic;
SIGNAL b_i : std_ulogic;
SIGNAL sel_i : std_ulogic;
SIGNAL y_o : std_ulogic;
BEGIN -- tbench
-- component instantiation
MUV : mux2to1
PORT MAP (
a_i => a_i,
b_i => b_i,
sel_i => sel_i,
y_o => y_o);
stimuli_p : PROCESS
BEGIN
a_i <= '0'; -- set a value to input a_i
b_i <= '0'; -- set a value to input b_i
sel_i <= '0'; -- set a value to input ci_i
WAIT FOR period; -- values are assigned here
a_i <= '1'; -- change value of a_i
WAIT FOR period;
a_i <= '0'; -- change value of a_i
b_i <= '1'; -- change value of b_i
WAIT FOR period;
-- add the missing stimuli here ...
WAIT;
END PROCESS;
END tbench;
-------------------------------------------------------------------------------
-- Revisions:
-- ----------
-- $Id:$
-------------------------------------------------------------------------------
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