Subversion Repositories vhdl-pipeline-mips

--
-- Memoria de instrucción del procesador MIPS Segmentado
--
-- Licencia: Copyright 2008 Emmanuel Luján
--
-- 	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 2 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, write
-- 	to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
-- 	Boston, MA 02110-1301 USA.
-- 
-- Autor:	Emmanuel Luján
-- Email:	info@emmanuellujan.com.ar
-- Versión:	1.0
--
 
library std;
use std.textio.all;
 
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
 
library work;
use work.segm_mips_const_pkg.all;
 
entity INSTRUCTION_MEMORY is
	port(
			RESET		: in	STD_LOGIC;					-- Reset asincrónico	
  			READ_ADDR	: in	STD_LOGIC_VECTOR (INST_SIZE-1 downto 0);	-- Dirección de la instrucción a leer
  			INST		: out	STD_LOGIC_VECTOR (INST_SIZE-1 downto 0)		-- Instrucción leída
	);
end INSTRUCTION_MEMORY;
 
 
architecture INSTRUCTION_MEMORY_ARC of INSTRUCTION_MEMORY is
 
begin
 
	--Entrego la instrucción almacenada en la dir. dada de forma asincrónica
	process (READ_ADDR)
	begin
 
		case READ_ADDR is
			when "00000000000000000000000000000000" => 
				INST <= "00000001010000000010000000100000";
			when "00000000000000000000000000000100" => 
				INST <= "00000000000000000000000000100010";
			when "00000000000000000000000000001000" => 
				INST <= "00000000000000000000000000100010";
			when "00000000000000000000000000001100" => 
				INST <= "00000000000000000000000000100010";
			when "00000000000000000000000000010000" => 
				INST <= "00000000000000000000000000100010";
			when "00000000000000000000000000010100" => 
				INST <= "00000000100000000001100000100000";
			when "00000000000000000000000000011000" => 
				INST <= "00000000000000000000000000100010";
			when "00000000000000000000000000011100" => 
				INST <= "00000000000000000000000000100010";
			when "00000000000000000000000000100000" => 
				INST <= "00000000000000000000000000100010";
			when "00000000000000000000000000100100" => 
				INST <= "00000000000000000000000000100010";
			when "00000000000000000000000000101000" => 
				INST <= "00000000011000110010000000100000";
			when "00000000000000000000000000101100" => 
				INST <= "00000000000000000000000000100010";
			when "00000000000000000000000000110000" => 
				INST <= "00000000000000000000000000100010";
			when "00000000000000000000000000110100" => 
				INST <= "00000000000000000000000000100010";
			when "00000000000000000000000000111000" => 
				INST <= "00000000000000000000000000100010";
			when "00000000000000000000000000111100" => 
				INST <= "00000000100010110010000000100010";
			when "00000000000000000000000001000000" => 
				INST <= "00000000000000000000000000100010";
			when "00000000000000000000000001000100" => 
				INST <= "00000000000000000000000000100010";
			when "00000000000000000000000001001000" => 
				INST <= "00000000000000000000000000100010";
			when "00000000000000000000000001001100" => 
				INST <= "00000000000000000000000000100010";
			when "00000000000000000000000001010000" => 
				INST <= "00000000100000000100000000101010";
			when "00000000000000000000000001010100" => 
				INST <= "00000000000000000000000000100010";
			when "00000000000000000000000001011000" => 
				INST <= "00000000000000000000000000100010";
			when "00000000000000000000000001011100" => 
				INST <= "00000000000000000000000000100010";
			when "00000000000000000000000001100000" => 
				INST <= "00000000000000000000000000100010";
			when "00000000000000000000000001100100" => 
				INST <= "00010001000000010000000000001000";
			when "00000000000000000000000001101000" => 
				INST <= "00000000000000000000000000100010";
			when "00000000000000000000000001101100" => 
				INST <= "00000000000000000000000000100010";
			when "00000000000000000000000001110000" => 
				INST <= "00000000000000000000000000100010";
			when "00000000000000000000000001110100" => 
				INST <= "00000001100001010110000000100101";
			when "00000000000000000000000001111000" => 
				INST <= "00010000000000000000000000000100";
			when "00000000000000000000000001111100" => 
				INST <= "00000000000000000000000000100010";
			when "00000000000000000000000010000000" => 
				INST <= "00000000000000000000000000100010";
			when "00000000000000000000000010000100" => 
				INST <= "00000000000000000000000000100010";
			when "00000000000000000000000010001000" => 
				INST <= "00000000011000110010000000100000";
			when "00000000000000000000000010001100" => 
				INST <= "00000000110000010011000000100000";
			when "00000000000000000000000010010000" => 
				INST <= "00000000101001010010100000100000";
			when "00000000000000000000000010010100" => 
				INST <= "00000000000000000000000000100010";
			when "00000000000000000000000010011000" => 
				INST <= "00000000000000000000000000100010";
			when "00000000000000000000000010011100" => 
				INST <= "00000000000000000000000000100010";
			when "00000000000000000000000010100000" => 
				INST <= "00000000110001110100000000101010";
			when "00000000000000000000000010100100" => 
				INST <= "00000000000000000000000000100010";
			when "00000000000000000000000010101000" => 
				INST <= "00000000000000000000000000100010";
			when "00000000000000000000000010101100" => 
				INST <= "00000000000000000000000000100010";
			when "00000000000000000000000010110000" => 
				INST <= "00000000000000000000000000100010";
			when "00000000000000000000000010110100" => 
				INST <= "00010001000000011111111111010111";
			when others => 
				INST <= "11111111111111111111111111111111";
		end case;
 
	end process;
 
 
end INSTRUCTION_MEMORY_ARC;