+-- `Deep Thought', a softcore CPU implemented on a FPGA
+--
+-- Copyright (C) 2010 Markus Hofstaetter <markus.manrow@gmx.at>
+-- Copyright (C) 2010 Martin Perner <e0725782@student.tuwien.ac.at>
+-- Copyright (C) 2010 Stefan Rebernig <stefan.rebernig@gmail.com>
+-- Copyright (C) 2010 Manfred Schwarz <e0725898@student.tuwien.ac.at>
+-- Copyright (C) 2010 Bernhard Urban <lewurm@gmail.com>
+--
+-- This program 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 3 of the License, or
+-- (at your option) any later version.
+--
+-- This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
+
library IEEE;
use IEEE.std_logic_1164.all;
);
end component r_w_ram;
+ component r_w_ram_be is
+ generic (
+ ADDR_WIDTH : integer range 1 to integer'high
+ );
+ port(
+ clk : in std_logic;
+
+ waddr, raddr : in std_logic_vector(ADDR_WIDTH-1 downto 0);
+
+ be : in std_logic_vector (3 downto 0);
+
+ we : in std_logic;
+
+ wdata : in std_logic_vector(31 downto 0);
+
+ q : out std_logic_vector(31 downto 0)
+ );
+ end component r_w_ram_be;
+
+ component ram_xilinx is
+ generic (
+ ADDR_WIDTH : integer range 1 to integer'high
+ );
+ port(
+ clk : in std_logic;
+
+ waddr, raddr : in std_logic_vector(ADDR_WIDTH-1 downto 0);
+
+ be : in std_logic_vector (3 downto 0);
+
+ we : in std_logic;
+
+ wdata : in std_logic_vector(31 downto 0);
+
+ q : out std_logic_vector(31 downto 0)
+ );
+ end component ram_xilinx;
+
component rom is
generic (
ADDR_WIDTH : integer range 1 to integer'high;
--System inputs
clk : in std_logic;
--Input
- wr_addr, rd_addr : in std_logic_vector(ADDR_WIDTH-1 downto 0);
-
- wr_en : in std_logic;
- data_in : in std_logic_vector(DATA_WIDTH-1 downto 0);
-
+ rd_addr : in std_logic_vector(ADDR_WIDTH-1 downto 0);
--Output
- data_out: out std_logic_vector(DATA_WIDTH-1 downto 0)
+ data_out : out std_logic_vector(DATA_WIDTH-1 downto 0)
);
end component rom;