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-- Copyright (C) 1996 Morgan Kaufmann Publishers, Inc
-- This file is part of VESTs (Vhdl tESTs).
-- VESTs is free software; you can redistribute it and/or modify it
-- under the terms of the GNU General Public License as published by the
-- Free Software Foundation; either version 2 of the License, or (at
-- your option) any later version.
-- VESTs is distributed in the hope that it will be useful, but WITHOUT
-- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
-- for more details.
-- You should have received a copy of the GNU General Public License
-- along with VESTs; if not, write to the Free Software Foundation,
-- Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-- ---------------------------------------------------------------------
--
-- $Id: ch_01_tb_01_01.vhd,v 1.2 2001-10-24 23:30:59 paw Exp $
-- $Revision: 1.2 $
--
-- ---------------------------------------------------------------------
entity test_bench_01_01 is
end entity test_bench_01_01;
architecture test_reg4_behav of test_bench_01_01 is
signal d0, d1, d2, d3, en, clk, q0, q1, q2, q3 : bit;
begin
dut : entity work.reg4(behav)
port map ( d0 => d0, d1 => d1, d2 => d2, d3 => d3, en => en, clk => clk,
q0 => q0, q1 => q1, q2 => q2, q3 => q3 );
stimulus : process is
begin
wait for 20 ns;
(d0, d1, d2, d3) <= bit_vector'("1010"); wait for 20 ns;
en <= '1'; wait for 20 ns;
clk <= '1'; wait for 20 ns;
(d0, d1, d2, d3) <= bit_vector'("0101"); wait for 20 ns;
clk <= '0'; wait for 20 ns;
(d0, d1, d2, d3) <= bit_vector'("0000"); wait for 20 ns;
en <= '1'; wait for 20 ns;
(d0, d1, d2, d3) <= bit_vector'("1111"); wait for 20 ns;
wait;
end process stimulus;
end architecture test_reg4_behav;
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