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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_fg_01_13.vhd,v 1.1.1.1 2001-08-22 18:20:47 paw Exp $
-- $Revision: 1.1.1.1 $
--
-- ---------------------------------------------------------------------
entity test_bench is
end entity test_bench;
architecture test_reg4 of test_bench is
signal d0, d1, d2, d3, en, clk, q0, q1, q2, q3 : bit;
begin
dut : entity work.reg4(behav)
port map ( d0, d1, d2, d3, en, clk, q0, q1, q2, q3 );
stimulus : process is
begin
d0 <= '1'; d1 <= '1'; d2 <= '1'; d3 <= '1';
en <= '0'; clk <= '0';
wait for 20 ns;
en <= '1'; wait for 20 ns;
clk <= '1'; wait for 20 ns;
d0 <= '0'; d1 <= '0'; d2 <= '0'; d3 <= '0'; wait for 20 ns;
en <= '0'; wait for 20 ns;
-- . . .
wait;
end process stimulus;
end architecture test_reg4;
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