这是一个基于xilinx平台的8051处理器文件

源代码在线查看: dcml_adjust_.vhd

软件大小: 4416 K
上传用户: yq0577
关键词: xilinx 8051 处理器
下载地址: 免注册下载 普通下载 VIP

相关代码

				-------------------------------------------------------------------------------
				--                                                                           --
				--          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:       8051@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 H鰈ler
				--
				--         Filename:               dcml_adjust_.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: Combinational design to calculate the decimal
				--                      representation (BCD) of a data bus.
				--
				--
				--
				--
				-------------------------------------------------------------------------------
				library IEEE; 
				use IEEE.std_logic_1164.all; 
				use IEEE.std_logic_arith.all; 
				  
				-----------------------------ENTITY DECLARATION--------------------------------
				
				entity dcml_adjust is
				
				  generic (DWIDTH : integer := 12);
				  
				  port (data_i  :  in  std_logic_vector(DWIDTH-1 downto 0);       
				        cy_i    :  in  std_logic_vector((DWIDTH-1)/4 downto 0); 
				        data_o  :  out std_logic_vector(DWIDTH-1 downto 0);       
				        cy_o    :  out std_logic);
				
				  -----------------------------------------------------------------------------
				  --  data_i .......... Data bus
				  --  cy_i ............ Carry flags (one for each nibble)
				  --  data_o .......... Adjusted data bus    
				  --  cy_o ............ New overall carry flag
				  -----------------------------------------------------------------------------
				  
				end dcml_adjust;
				
							

相关资源