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-------------------------------------------------------------------------------
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-------------------------------------------------------------------------------
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--
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--
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-- The Arithmetic Logic Unit (ALU).
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-- The Arithmetic Logic Unit (ALU).
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-- It contains the ALU core plus the Accumulator and the Temp Reg.
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-- It contains the ALU core plus the Accumulator and the Temp Reg.
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--
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--
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-- $Id: alu.vhd,v 1.8 2004-04-24 23:43:56 arniml Exp $
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-- $Id: alu.vhd,v 1.9 2005-06-11 10:08:43 arniml Exp $
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--
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--
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-- Copyright (c) 2004, Arnim Laeuger (arniml@opencores.org)
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-- Copyright (c) 2004, Arnim Laeuger (arniml@opencores.org)
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--
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--
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-- All rights reserved
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-- All rights reserved
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--
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--
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library ieee;
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library ieee;
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use ieee.std_logic_1164.all;
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use ieee.std_logic_1164.all;
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use work.t48_pack.word_t;
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use work.t48_pack.word_t;
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use work.alu_pack.alu_op_t;
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use work.t48_alu_pack.alu_op_t;
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entity alu is
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entity t48_alu is
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port (
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port (
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-- Global Interface -------------------------------------------------------
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-- Global Interface -------------------------------------------------------
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clk_i : in std_logic;
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clk_i : in std_logic;
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res_i : in std_logic;
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res_i : in std_logic;
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accu_low_i : in boolean;
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accu_low_i : in boolean;
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p06_temp_reg_i : in boolean;
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p06_temp_reg_i : in boolean;
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p60_temp_reg_i : in boolean
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p60_temp_reg_i : in boolean
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);
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);
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end alu;
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end t48_alu;
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library ieee;
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library ieee;
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use ieee.numeric_std.all;
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use ieee.numeric_std.all;
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use work.t48_pack.clk_active_c;
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use work.t48_pack.clk_active_c;
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use work.t48_pack.res_active_c;
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use work.t48_pack.res_active_c;
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use work.t48_pack.bus_idle_level_c;
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use work.t48_pack.bus_idle_level_c;
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use work.t48_pack.nibble_t;
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use work.t48_pack.nibble_t;
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use work.alu_pack.all;
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use work.t48_alu_pack.all;
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-- pragma translate_off
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-- pragma translate_off
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use work.t48_tb_pack.tb_accu_s;
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use work.t48_tb_pack.tb_accu_s;
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-- pragma translate_on
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-- pragma translate_on
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architecture rtl of alu is
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architecture rtl of t48_alu is
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-- the Accumulator and Temp Reg
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-- the Accumulator and Temp Reg
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signal accumulator_q,
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signal accumulator_q,
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accu_shadow_q,
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accu_shadow_q,
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temp_req_q : word_t;
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temp_req_q : word_t;
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-------------------------------------------------------------------------------
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-------------------------------------------------------------------------------
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-- File History:
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-- File History:
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--
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--
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-- $Log: not supported by cvs2svn $
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-- $Log: not supported by cvs2svn $
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-- Revision 1.8 2004/04/24 23:43:56 arniml
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-- move from std_logic_arith to numeric_std
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--
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-- Revision 1.7 2004/04/07 22:09:03 arniml
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-- Revision 1.7 2004/04/07 22:09:03 arniml
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-- remove unused signals
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-- remove unused signals
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--
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--
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-- Revision 1.6 2004/04/07 20:56:23 arniml
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-- Revision 1.6 2004/04/07 20:56:23 arniml
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-- default assignment for aux_carry_o
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-- default assignment for aux_carry_o
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