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Diffstat (limited to 'testsuite/synth/issue2273/alucore_.vhd')
| -rw-r--r-- | testsuite/synth/issue2273/alucore_.vhd | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/testsuite/synth/issue2273/alucore_.vhd b/testsuite/synth/issue2273/alucore_.vhd new file mode 100644 index 000000000..68b5a3474 --- /dev/null +++ b/testsuite/synth/issue2273/alucore_.vhd @@ -0,0 +1,92 @@ +------------------------------------------------------------------------------- +-- -- +-- X X XXXXXX XXXXXX XXXXXX XXXXXX X -- +-- XX XX X X X X X X X XX -- +-- X X X X X X X X X X X X -- +-- X X X X X X X X X X X X -- +-- X X X X XXXXXX X X XXXXXX X -- +-- X X X X X X X X X -- +-- X X X X X X X X X -- +-- X X X X X X X X X X -- +-- X X XXXXXX XXXXXX XXXXXX XXXXXX X -- +-- -- +-- -- +-- O R E G A N O S Y S T E M S -- +-- -- +-- Design & Consulting -- +-- -- +------------------------------------------------------------------------------- +-- -- +-- Web: http://www.oregano.at/ -- +-- -- +-- Contact: mc8051@oregano.at -- +-- -- +------------------------------------------------------------------------------- +-- -- +-- MC8051 - VHDL 8051 Microcontroller IP Core -- +-- Copyright (C) 2001 OREGANO SYSTEMS -- +-- -- +-- This library is free software; you can redistribute it and/or -- +-- modify it under the terms of the GNU Lesser General Public -- +-- License as published by the Free Software Foundation; either -- +-- version 2.1 of the License, or (at your option) any later version. -- +-- -- +-- This library 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 -- +-- Lesser General Public License for more details. -- +-- -- +-- Full details of the license can be found in the file LGPL.TXT. -- +-- -- +-- You should have received a copy of the GNU Lesser General Public -- +-- License along with this library; if not, write to the Free Software -- +-- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA -- +-- -- +------------------------------------------------------------------------------- +-- +-- +-- Author: Roland Höller +-- +-- Filename: alucore_.vhd +-- +-- Date of Creation: Mon Aug 9 12:14:48 1999 +-- +-- Version: $Revision: 1.4 $ +-- +-- Date of Latest Version: $Date: 2002-01-07 12:17:44 $ +-- +-- +-- Description: This unit performs simple logical operations. +-- +-- +-- +-- +------------------------------------------------------------------------------- +library IEEE; +use IEEE.std_logic_1164.all; +use IEEE.std_logic_arith.all; +library work; +use work.mc8051_p.all; + +-----------------------------ENTITY DECLARATION-------------------------------- + +entity alucore is + + generic (DWIDTH : integer := 8); -- Data width of the ALU + + port (op_a_i : in std_logic_vector(DWIDTH-1 downto 0); + op_b_i : in std_logic_vector(DWIDTH-1 downto 0); + alu_cmd_i : in std_logic_vector(3 downto 0); + cy_i : in std_logic_vector((DWIDTH-1)/4 downto 0); + cy_o : out std_logic_vector((DWIDTH-1)/4 downto 0); + result_o : out std_logic_vector(DWIDTH-1 downto 0)); + +end alucore; + +-- op_a_i....... operand A +-- op_b_i....... operand B +-- alu_cmd_i.... command for the ALU core +-- cy_i......... carry flags (MSB is CY, rest is AC) + +-- cy_o......... resulting carry out (MSB is CY, rest is AC) +-- result_o..... result |