diff options
Diffstat (limited to 'testsuite/vests/vhdl-93/billowitch/compliant/tc143.vhd')
-rw-r--r-- | testsuite/vests/vhdl-93/billowitch/compliant/tc143.vhd | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/testsuite/vests/vhdl-93/billowitch/compliant/tc143.vhd b/testsuite/vests/vhdl-93/billowitch/compliant/tc143.vhd new file mode 100644 index 000000000..3c27e48e5 --- /dev/null +++ b/testsuite/vests/vhdl-93/billowitch/compliant/tc143.vhd @@ -0,0 +1,81 @@ + +-- 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: tc143.vhd,v 1.2 2001-10-26 16:29:41 paw Exp $ +-- $Revision: 1.2 $ +-- +-- --------------------------------------------------------------------- + +package c04s03b02x02p12n01i00143pkg is + type fourstate is ('0','1','x','z'); + function fourstate_to_bit(x : fourstate) return bit; + procedure simple ( crude : in bit; + signal refined : out bit); +end c04s03b02x02p12n01i00143pkg; + +package body c04s03b02x02p12n01i00143pkg is + procedure simple ( crude : in bit; + signal refined : out bit) is + begin + refined <= crude after 5 ns; + end simple; + + function fourstate_to_bit(x : fourstate) return bit is + variable newval: bit := '0'; + begin + case x is + when '0' => newval := '0'; + when '1' => newval := '1'; + when 'z' => newval := '0'; + when 'x' => newval := '0'; + end case; + return newval; + end fourstate_to_bit; +end c04s03b02x02p12n01i00143pkg; + +use work.c04s03b02x02p12n01i00143pkg.all; +ENTITY c04s03b02x02p12n01i00143ent IS + port( x, y: in fourstate); +END c04s03b02x02p12n01i00143ent; + +ARCHITECTURE c04s03b02x02p12n01i00143arch OF c04s03b02x02p12n01i00143ent IS + signal yint : bit; +BEGIN + + simple ( fourstate_to_bit(y) , yint); + + TESTING: PROCESS + BEGIN + wait for 10 ns; + assert NOT( yint = '0' ) + report "***PASSED TEST: c04s03b02x02p12n01i00143" + severity NOTE; + assert ( yint = '0' ) + report "***FAILED TEST: c04s03b02x02p12n01i00143 - Type conversion test failed." + severity ERROR; + wait; + END PROCESS TESTING; + +END c04s03b02x02p12n01i00143arch; |