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Diffstat (limited to 'testsuite/vests/vhdl-93/ashenden/compliant/ch_16_ch_16_02.vhd')
-rw-r--r-- | testsuite/vests/vhdl-93/ashenden/compliant/ch_16_ch_16_02.vhd | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/testsuite/vests/vhdl-93/ashenden/compliant/ch_16_ch_16_02.vhd b/testsuite/vests/vhdl-93/ashenden/compliant/ch_16_ch_16_02.vhd new file mode 100644 index 000000000..d080b4f99 --- /dev/null +++ b/testsuite/vests/vhdl-93/ashenden/compliant/ch_16_ch_16_02.vhd @@ -0,0 +1,76 @@ + +-- 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_16_ch_16_02.vhd,v 1.1.1.1 2001-08-22 18:20:48 paw Exp $ +-- $Revision: 1.1.1.1 $ +-- +-- --------------------------------------------------------------------- + +entity ch_16_02 is + +end entity ch_16_02; + + +---------------------------------------------------------------- + + +architecture test of ch_16_02 is + + -- code from book: + + subtype word is bit_vector(0 to 31); + type word_array is array (integer range <>) of word; + + function resolve_words ( words : word_array ) return word; + + signal s : resolve_words word bus; + + -- end of code from book + + function resolve_words ( words : word_array ) return word is + begin + if words'length > 0 then + return words(words'left); + else + return X"00000000"; + end if; + end function resolve_words; + + constant T_delay : delay_length := 2 ns; + +begin + + + process is + begin + + -- code from book (should fail) + + s(0 to 15) <= X"003F" after T_delay; + s(16 to 31) <= null after T_delay; + + -- end of code from book + + wait; + end process; + + +end architecture test; |