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Diffstat (limited to 'testsuite/vests/vhdl-93/billowitch/compliant/tc1328.vhd')
-rw-r--r-- | testsuite/vests/vhdl-93/billowitch/compliant/tc1328.vhd | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/testsuite/vests/vhdl-93/billowitch/compliant/tc1328.vhd b/testsuite/vests/vhdl-93/billowitch/compliant/tc1328.vhd new file mode 100644 index 0000000..92c7a5f --- /dev/null +++ b/testsuite/vests/vhdl-93/billowitch/compliant/tc1328.vhd @@ -0,0 +1,91 @@ + +-- 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: tc1328.vhd,v 1.2 2001-10-26 16:29:40 paw Exp $ +-- $Revision: 1.2 $ +-- +-- --------------------------------------------------------------------- + +package c08s04b01x00p03n03i01328pkg is + + type MVL is ('0', '1', 'Z'); + type TVECT is array (INTEGER RANGE <>) of MVL; + + function BUSFUNC(INPUT: TVECT) return MVL; + + subtype TS1 is BUSFUNC MVL; + type TSV is array (INTEGER RANGE <>) of TS1; + subtype WORD is TSV(1 downto 0); +end c08s04b01x00p03n03i01328pkg; + +package body c08s04b01x00p03n03i01328pkg is + + function BUSFUNC(INPUT: TVECT) return MVL is + variable RESOLVED_VALUE: MVL := 'Z'; + begin + for I in INPUT'RANGE loop + if INPUT(I) /= 'Z' then + RESOLVED_VALUE := INPUT(I); + exit; + end if; + end loop; + return RESOLVED_VALUE; + end BUSFUNC; + +end c08s04b01x00p03n03i01328pkg; + +use WORK.c08s04b01x00p03n03i01328pkg.all; +ENTITY c08s04b01x00p03n03i01328ent IS +END c08s04b01x00p03n03i01328ent; + +ARCHITECTURE c08s04b01x00p03n03i01328arch OF c08s04b01x00p03n03i01328ent IS + signal S1 : BIT :='1'; + signal X : BUSFUNC MVL BUS; +BEGIN + + TESTING: PROCESS + BEGIN + + S1 <= transport '0' after 15 ns; + + wait on S1; + + if (S1 = '1') then + X <= '1'; + else + X <= null after 5 ns; + end if; + + wait for 6 ns; + assert NOT( X='Z' ) + report "***PASSED TEST: c08s04b01x00p03n03i01328" + severity NOTE; + assert ( X='Z' ) + report "***FAILED TEST: c08s04b01x00p03n03i01328 - The driver of the signal of the signal is turned off when the waveform element consists of the reserved word 'null' and an optional after clasuse." + severity ERROR; + wait; + END PROCESS TESTING; + +END c08s04b01x00p03n03i01328arch; |