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lustrec-tests / vhdl_json / vhdl_files / 2-exportOK / ghdl / ghdl / testsuite / vests / vhdl-93 / billowitch / compliant / tc1704.vhd @ 3fd18385

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-- Copyright (C) 2001 Bill Billowitch.
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-- Some of the work to develop this test suite was done with Air Force
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-- support.  The Air Force and Bill Billowitch assume no
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-- responsibilities for this software.
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-- This file is part of VESTs (Vhdl tESTs).
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-- VESTs is free software; you can redistribute it and/or modify it
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-- under the terms of the GNU General Public License as published by the
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-- Free Software Foundation; either version 2 of the License, or (at
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-- your option) any later version. 
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-- VESTs is distributed in the hope that it will be useful, but WITHOUT
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-- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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-- FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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-- for more details. 
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-- You should have received a copy of the GNU General Public License
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-- along with VESTs; if not, write to the Free Software Foundation,
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-- Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
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-- ---------------------------------------------------------------------
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--
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-- $Id: tc1704.vhd,v 1.2 2001-10-26 16:29:43 paw Exp $
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-- $Revision: 1.2 $
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--
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-- ---------------------------------------------------------------------
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ENTITY c09s02b00x00p07n01i01704ent IS
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END c09s02b00x00p07n01i01704ent;
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ARCHITECTURE c09s02b00x00p07n01i01704arch OF c09s02b00x00p07n01i01704ent IS
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  signal   S :    Bit;
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BEGIN
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  TESTING: PROCESS( S )
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    -- local variables.
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    variable INITED : BOOLEAN := FALSE;
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    variable CNT    : INTEGER := 0;
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    variable NEWTIME: TIME;
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    variable k      : integer := 1;
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  BEGIN
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    -- Take care of the first run.
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    if  (not( INITED )) then
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      INITED  := TRUE;
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      CNT     := 0;
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      S       <= (not S) after 1 ns;
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      NEWTIME := NOW + 1 ns;
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      -- Otherwise, take care of all subsequent runs.
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      -- NOTE:  Take care of the last time we will get awakened.
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    elsif (NOW /= TIME'HIGH) then
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      -- Verify that we woke up when S was updated.
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      if NOT(( S'EVENT ) and ( NEWTIME = NOW )) then
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        k := 0;
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      end if;
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      -- See if we should continue.  If so, do it.
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      CNT    := CNT + 1;
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      if  (CNT <= 50) then
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        S       <= (not S) after 1 ns;
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        NEWTIME := NOW + 1 ns;
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      end if;
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    end if;
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    if (CNT = 50) then
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      assert NOT( k=1 )
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        report "***PASSED TEST: c09s02b00x00p07n01i01704"
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        severity NOTE;
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      assert ( k=1 )
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        report "***FAILED TEST: c09s02b00x00p07n01i01704 - The process statement is assumed to contain an implicit wait statement if a sensitivity list appears following the reserved word process."
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        severity ERROR;
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    end if;
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  END PROCESS TESTING;
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END c09s02b00x00p07n01i01704arch;