Subversion Repositories openrisc_2011-10-31

//////////////////////////////////////////////////////////////////////
////                                                              ////
////  OR1200's WISHBONE BIU                                       ////
////                                                              ////
////  This file is part of the OpenRISC 1200 project              ////
////  http://www.opencores.org/cores/or1k/                        ////
////                                                              ////
////  Description                                                 ////
////  Implements WISHBONE interface                               ////
////                                                              ////
////  To Do:                                                      ////
////   - if biu_cyc/stb are deasserted and wb_ack_i is asserted   ////
////   and this happens even before aborted_r is asssrted,        ////
////   wb_ack_i will be delivered even though transfer is         ////
////   internally considered already aborted. However most        ////
////   wb_ack_i are externally registered and delayed. Normally   ////
////   this shouldn't cause any problems.                         ////
////                                                              ////
////  Author(s):                                                  ////
////      - Damjan Lampret, lampret@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: or1200_iwb_biu.v,v $
// Revision 2.0  2010/06/30 11:00:00  ORSoC
// Major update: 
// This module is obsolete.
//
// Revision 1.2  2004/04/05 08:29:57  lampret
// Merged branch_qmem into main tree.
//
// Revision 1.1  2003/12/05 00:12:08  lampret
// New wb_biu for iwb interface.
//
// Revision 1.6.4.1  2003/07/08 15:36:37  lampret
// Added embedded memory QMEM.
//
// Revision 1.6  2003/04/07 20:57:46  lampret
// Fixed OR1200_CLKDIV_x_SUPPORTED defines. Fixed order of ifdefs.
//
// Revision 1.5  2002/12/08 08:57:56  lampret
// Added optional support for WB B3 specification (xwb_cti_o, xwb_bte_o). Made xwb_cab_o optional.
//
// Revision 1.4  2002/09/16 03:09:16  lampret
// Fixed a combinational loop.
//
// Revision 1.3  2002/08/12 05:31:37  lampret
// Added optional retry counter for wb_rty_i. Added graceful termination for aborted transfers.
//
// Revision 1.2  2002/07/14 22:17:17  lampret
// Added simple trace buffer [only for Xilinx Virtex target]. Fixed instruction fetch abort when new exception is recognized.
//
// Revision 1.1  2002/01/03 08:16:15  lampret
// New prefixes for RTL files, prefixed module names. Updated cache controllers and MMUs.
//
// Revision 1.12  2001/11/22 13:42:51  lampret
// Added wb_cyc_o assignment after it was removed by accident.
//
// Revision 1.11  2001/11/20 21:28:10  lampret
// Added optional sampling of inputs.
//
// Revision 1.10  2001/11/18 11:32:00  lampret
// OR1200_REGISTERED_OUTPUTS can now be enabled.
//
// Revision 1.9  2001/10/21 17:57:16  lampret
// Removed params from generic_XX.v. Added translate_off/on in sprs.v and id.v. Removed spr_addr from dc.v and ic.v. Fixed CR+LF.
//
// Revision 1.8  2001/10/14 13:12:10  lampret
// MP3 version.
//
// Revision 1.1.1.1  2001/10/06 10:18:35  igorm
// no message
//
// Revision 1.3  2001/08/09 13:39:33  lampret
// Major clean-up.
//
// Revision 1.2  2001/07/22 03:31:54  lampret
// Fixed RAM's oen bug. Cache bypass under development.
//
// Revision 1.1  2001/07/20 00:46:23  lampret
// Development version of RTL. Libraries are missing.
//
//
 
// synopsys translate_off
`include "timescale.v"
// synopsys translate_on
`include "or1200_defines.v"
 
module or1200_iwb_biu();
 
	// THIS MODULE IS OBSOLETE !!! 
	// COMPLETELY REWRITTEN or1200_wb_biu.v IS USED INSTEAD !!!
 
 
endmodule