8051 core writen in VHDL, fully functional and tested

源代码在线查看: oc8051_ram.v

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关键词: functional writen tested fully
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				//////////////////////////////////////////////////////////////////////
				////                                                              ////
				////  8051 data ram                                               ////
				////                                                              ////
				////  This file is part of the 8051 cores project                 ////
				////  http://www.opencores.org/cores/8051/                        ////
				////                                                              ////
				////  Description                                                 ////
				////   data ram for virtex                                        ////
				////                                                              ////
				////  To Do:                                                      ////
				////   nothing                                                    ////
				////                                                              ////
				////  Author(s):                                                  ////
				////      - Simon Teran, simont@opencores.org                     ////
				////                                                              ////
				//////////////////////////////////////////////////////////////////////
				////                                                              ////
				//// Copyright (C) 2000 Authors and OPENCORES.ORG                 ////
				////                                                              ////
				//// This source file may be used and distributed without         ////
				//// restriction provided that this copyright statement is not    ////
				//// removed from the file and that any derivative work contains  ////
				//// the original copyright notice and the associated disclaimer. ////
				////                                                              ////
				//// This source file 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 source 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.                                                     ////
				////                                                              ////
				//// You should have received a copy of the GNU Lesser General    ////
				//// Public License along with this source; if not, download it   ////
				//// from http://www.opencores.org/lgpl.shtml                     ////
				////                                                              ////
				//////////////////////////////////////////////////////////////////////
				//
				// CVS Revision History
				//
				// $Log: oc8051_ram.v,v $				// Revision 1.2  2002/09/30 17:34:02  simont				// prepared header				//
				//
				
				// synopsys translate_off
				`include "oc8051_timescale.v"
				// synopsys translate_on
				
				module oc8051_ram (clk, rst, rd_addr, rd_data, wr_addr, wr_data, wr);
				// clk          clock
				// rd_addr      read addres
				// rd_data      read data
				// wr_addr      write addres
				// wr_data      write data
				// wr           write
				
				
				input clk, wr, rst;
				input [7:0] rd_addr, wr_addr, wr_data;
				output [7:0] rd_data;
				
				wire [7:0] dob;
				RAMB4_S8_S8 ram1(.DOA(rd_data), .DOB(dob), .ADDRA({1'b0, rd_addr}), .DIA(8'h00), .ENA(1'b1), .CLKA(clk), .WEA(1'b0),
				                .RSTA(rst), .ADDRB({1'b0, wr_addr}), .DIB(wr_data), .ENB(1'b1), .CLKB(clk), .WEB(wr), .RSTB(rst));
				
				
				endmodule
				
				
				
				module RAMB4_S8_S8(DOA, DOB, ADDRA, DIA, ENA, CLKA, WEA, RSTA, ADDRB, DIB, ENB, CLKB, WEB, RSTB); // synthesis syn_black_box
				output [7:0] DOA;
				output [7:0] DOB;
				input [8:0] ADDRA;
				input [7:0] DIA;
				input ENA;
				input CLKA;
				input WEA;
				input RSTA;
				input [8:0] ADDRB;
				input [7:0] DIB;
				input ENB;
				input CLKB;
				input WEB;
				input RSTB;
				endmodule
							

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