diff options
Diffstat (limited to 'testsuite/vests/vhdl-93/ashenden/compliant/ch_03_ch_03_03.vhd')
-rw-r--r-- | testsuite/vests/vhdl-93/ashenden/compliant/ch_03_ch_03_03.vhd | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/testsuite/vests/vhdl-93/ashenden/compliant/ch_03_ch_03_03.vhd b/testsuite/vests/vhdl-93/ashenden/compliant/ch_03_ch_03_03.vhd new file mode 100644 index 000000000..3882ce1ea --- /dev/null +++ b/testsuite/vests/vhdl-93/ashenden/compliant/ch_03_ch_03_03.vhd @@ -0,0 +1,82 @@ + +-- 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_03_ch_03_03.vhd,v 1.3 2001-10-26 16:29:33 paw Exp $ +-- $Revision: 1.3 $ +-- +-- --------------------------------------------------------------------- + +entity ch_03_03 is +end entity ch_03_03; + +architecture test of ch_03_03 is +begin + + process_3_1_c : process is + + type mode_type is (immediate, other_mode); + type opcode_type is (load, add, subtract, other_opcode); + + variable mode : mode_type; + variable opcode : opcode_type; + constant immed_operand : integer := 1; + constant memory_operand : integer := 2; + constant address_operand : integer := 3; + variable operand : integer; + + procedure procedure_3_1_c is + begin + + -- code from book: + + if mode = immediate then + operand := immed_operand; + elsif opcode = load or opcode = add or opcode = subtract then + operand := memory_operand; + else + operand := address_operand; + end if; + + -- end of code from book + + end procedure_3_1_c; + + begin + mode := immediate; + procedure_3_1_c; + + mode := other_mode; + opcode := load; + procedure_3_1_c; + + opcode := add; + procedure_3_1_c; + + opcode := subtract; + procedure_3_1_c; + + opcode := other_opcode; + procedure_3_1_c; + + wait; + end process process_3_1_c; + +end architecture test; |