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+
+-- Copyright (C) 2001 Bill Billowitch.
+
+-- Some of the work to develop this test suite was done with Air Force
+-- support. The Air Force and Bill Billowitch assume no
+-- responsibilities for this software.
+
+-- 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: tc1207.vhd,v 1.2 2001-10-26 16:29:39 paw Exp $
+-- $Revision: 1.2 $
+--
+-- ---------------------------------------------------------------------
+
+package c08s01b00x00p08n04i01207pkg is
+
+ -- Type declarations.
+ type SWITCH_LEVEL is ( '0', '1', 'X' );
+ type S_logic_vector is array(positive range <>) of SWITCH_LEVEL;
+
+ -- Define the bus resolution function.
+ function switchf( s : S_logic_vector ) return SWITCH_LEVEL;
+
+ -- Further type declarations.
+ subtype SWITCH_T is switchF SWITCH_LEVEL;
+ type WORD is array(0 to 31) of SWITCH_T;
+
+end c08s01b00x00p08n04i01207pkg;
+
+package body c08s01b00x00p08n04i01207pkg is
+
+ function switchf( s : S_logic_vector ) return SWITCH_LEVEL is
+ begin
+ return( S(1) );
+ end switchf;
+
+end c08s01b00x00p08n04i01207pkg;
+
+use work.c08s01b00x00p08n04i01207pkg.all;
+ENTITY c08s01b00x00p08n04i01207ent IS
+END c08s01b00x00p08n04i01207ent;
+
+ARCHITECTURE c08s01b00x00p08n04i01207arch OF c08s01b00x00p08n04i01207ent IS
+
+ -- Local types.
+ type WORD2 is array(0 to 31) of SWITCH_LEVEL;
+
+ -- Local signals.
+ signal A, B : WORD;
+ signal UnResolved : WORD2;
+
+BEGIN
+ TESTING: PROCESS
+ -- Constant declarations.
+ constant One : INTEGER := 1;
+ constant Two : INTEGER := 2;
+
+ -- Local variables.
+ variable ShouldBeTime : TIME;
+ variable I : INTEGER;
+ variable k : integer := 0;
+ BEGIN
+ -- 1. Test waiting on static signals.
+ for I in 0 to 31 loop
+ A( I ) <= 'X' after (I * 1 ns);
+ end loop;
+ ShouldBeTime := NOW + 31 ns;
+ wait until (A(31) = 'X');
+
+ -- Should wake up when the A(31) assignment takes place.
+ if (A(31) /= 'X' and ShouldBeTime /= NOW) then
+ k := 1;
+ end if;
+ assert (A(31) = 'X');
+ assert (ShouldBeTime = NOW);
+
+ -- 2. Test waiting on non-static signals. (should still have same behavior, but just be slower)
+ for I in 0 to 31 loop
+ A( I ) <= '1' after (I * 1 ns);
+ end loop;
+ ShouldBeTime := NOW + 31 ns;
+ I := 31;
+ wait until (A(I) = '1');
+
+ -- Should wake up when the A(31) assignment takes place.
+ if (A(I) /= '1' and ShouldBeTime /= NOW) then
+ k := 1;
+ end if;
+ assert (A(I) = '1');
+ assert (ShouldBeTime = NOW);
+
+ -- 3. Test that waiting on a variable expression merely times-out.
+ ShouldBeTime := NOW + 35 ns;
+ wait until (I = 47) for 35 ns;
+ if (ShouldBeTime /= NOW) then
+ k := 1;
+ end if;
+ assert (ShouldBeTime = NOW);
+
+ -- 4. Perform same test as '1' on a signal not resolved at the scalar subelement level.
+ UnResolved <= ( 'X','X','X','X','X','X','X','X','X','X',
+ 'X','X','X','X','X','X','X','X','X','X',
+ 'X','X','X','X','X','X','X','X','X','X',
+ 'X','X' ) after 31 ns;
+ ShouldBeTime := NOW + 31 ns;
+ wait until (UnResolved(31) = 'X');
+
+ -- Should wake up when the UnResolved(31) assignment takes place.
+ if (UnResolved(31) /= 'X' and ShouldBeTime /= NOW) then
+ k := 1;
+ end if;
+ assert (UnResolved(31) = 'X');
+ assert (ShouldBeTime = NOW);
+
+ assert NOT(k=0)
+ report "***PASSED TEST: c08s01b00x00p08n04i01207"
+ severity NOTE;
+ assert ( k=0 )
+ report "***FAILED TEST: c08s01b00x00p08n04i01207 - The sensitivity set of a wait statement will contain the signal denoted by the longest static prefix of each signal name if no sensitivity clause."
+ severity ERROR;
+ wait;
+ END PROCESS TESTING;
+
+END c08s01b00x00p08n04i01207arch;