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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_03_fg_03_02.vhd,v 1.3 2001-10-26 16:29:33 paw Exp $
+-- $Revision: 1.3 $
+--
+-- ---------------------------------------------------------------------
+
+-- test code:
+
+use work.test_bench_03_02.all;
+
+-- end test code
+
+library ieee; use ieee.std_logic_1164.all;
+
+ entity mux4 is
+ port ( sel : in sel_range;
+ d0, d1, d2, d3 : in std_ulogic;
+ z : out std_ulogic );
+ end entity mux4;
+
+ architecture demo of mux4 is
+ begin
+
+ out_select : process (sel, d0, d1, d2, d3) is
+ begin
+ case sel is
+ when 0 =>
+ z <= d0;
+ when 1 =>
+ z <= d1;
+ when 2 =>
+ z <= d2;
+ when 3 =>
+ z <= d3;
+ end case;
+ end process out_select;
+
+ end architecture demo;