Subversion Repositories apb_slave

<##//////////////////////////////////////////////////////////////////
////                                                             ////
////  Author: Eyal Hochberg                                      ////
////          eyal@provartec.com                                 ////
////                                                             ////
////  Downloaded from: http://www.opencores.org                  ////
/////////////////////////////////////////////////////////////////////
////                                                             ////
//// Copyright (C) 2010 Provartec LTD                            ////
//// www.provartec.com                                           ////
//// info@provartec.com                                          ////
////                                                             ////
//// This source file may be used and distributed without        ////
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//// 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.////
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//// 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. http://www.gnu.org/licenses/lgpl.html              ////
////                                                             ////
//////////////////////////////////////////////////////////////////##>
 
OUTFILE PREFIX_mem.v
 
INCLUDE def_apb_slave.txt
 
ITER BX EXPR(DATA_BITS/8)
module PREFIX_mem (PORTS);
 
   parameter                    MEM_WORDS = EXPR((2^ADDR_BITS)/(DATA_BITS/8));
   parameter                    ADDR_LSB  = LOG2(EXPR(DATA_BITS/8));
 
   input                        clk;
   input                        reset;
   revport                      GROUP_STUB_MEM;
 
   reg [DATA_BITS-1:0]          Mem [MEM_WORDS-1:0];
   reg [DATA_BITS-1:0]          DOUT;
   wire [DATA_BITS-1:0]         BitSEL;
   wire [ADDR_BITS-1:ADDR_LSB]  ADDR_WR_word = ADDR_WR[ADDR_BITS-1:ADDR_LSB];
   wire [ADDR_BITS-1:ADDR_LSB]  ADDR_RD_word = ADDR_RD[ADDR_BITS-1:ADDR_LSB];
 
 
   assign                       BitSEL = {CONCAT({8{BSEL[BX]}} ,)};
 
   always @(posedge clk)
     if (WR)
       Mem[ADDR_WR_word] <= #FFD (Mem[ADDR_WR_word] & ~BitSEL) | (DIN & BitSEL);
 
   always @(posedge clk or posedge reset)
     if (reset)
       DOUT <= #FFD {DATA_BITS{1'b0}};
     else if (RD) 
       DOUT <= #FFD Mem[ADDR_RD_word];
 
 
endmodule