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//----------------------------------------------------------------------------
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//----------------------------------------------------------------------------
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// Copyright (C) 2001 Authors
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// Copyright (C) 2009 , Olivier Girard
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//
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//
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// This source file may be used and distributed without restriction provided
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// Redistribution and use in source and binary forms, with or without
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// that this copyright statement is not removed from the file and that any
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// modification, are permitted provided that the following conditions
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// derivative work contains the original copyright notice and the associated
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// are met:
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// disclaimer.
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// * Redistributions of source code must retain the above copyright
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//
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// notice, this list of conditions and the following disclaimer.
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// This source file is free software; you can redistribute it and/or modify
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// * Redistributions in binary form must reproduce the above copyright
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// it under the terms of the GNU Lesser General Public License as published
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// notice, this list of conditions and the following disclaimer in the
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// by the Free Software Foundation; either version 2.1 of the License, or
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// documentation and/or other materials provided with the distribution.
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// (at your option) any later version.
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// * Neither the name of the authors nor the names of its contributors
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//
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// may be used to endorse or promote products derived from this software
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// This source is distributed in the hope that it will be useful, but WITHOUT
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// without specific prior written permission.
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// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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//
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// License for more details.
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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//
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// You should have received a copy of the GNU Lesser General Public License
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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// along with this source; if not, write to the Free Software Foundation,
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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// Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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// OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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// THE POSSIBILITY OF SUCH DAMAGE
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//
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//
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//----------------------------------------------------------------------------
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//----------------------------------------------------------------------------
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//
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//
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// *File Name: omsp_register_file.v
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// *File Name: omsp_register_file.v
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//
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//
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//
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//
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// *Author(s):
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// *Author(s):
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// - Olivier Girard, olgirard@gmail.com
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// - Olivier Girard, olgirard@gmail.com
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//
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//
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//----------------------------------------------------------------------------
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//----------------------------------------------------------------------------
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// $Rev: 111 $
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// $Rev: 132 $
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// $LastChangedBy: olivier.girard $
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// $LastChangedBy: olivier.girard $
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// $LastChangedDate: 2011-05-20 22:39:02 +0200 (Fri, 20 May 2011) $
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// $LastChangedDate: 2012-03-09 21:47:13 +0100 (Fri, 09 Mar 2012) $
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//----------------------------------------------------------------------------
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//----------------------------------------------------------------------------
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`ifdef OMSP_NO_INCLUDE
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`ifdef OMSP_NO_INCLUDE
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`else
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`else
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`include "openMSP430_defines.v"
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`include "openMSP430_defines.v"
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`endif
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`endif
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//=============================================================================
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//=============================================================================
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// 1) AUTOINCREMENT UNIT
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// 1) AUTOINCREMENT UNIT
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//=============================================================================
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//=============================================================================
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wire [15:0] incr_op = inst_bw ? 16'h0001 : 16'h0002;
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wire [15:0] inst_src_in;
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wire [15:0] incr_op = (inst_bw & ~inst_src_in[1]) ? 16'h0001 : 16'h0002;
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wire [15:0] reg_incr_val = reg_src+incr_op;
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wire [15:0] reg_incr_val = reg_src+incr_op;
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wire [15:0] reg_dest_val_in = inst_bw ? {8'h00,reg_dest_val[7:0]} : reg_dest_val;
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wire [15:0] reg_dest_val_in = inst_bw ? {8'h00,reg_dest_val[7:0]} : reg_dest_val;
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//=============================================================================
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//=============================================================================
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// Source input selection mask (for interrupt support)
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// Source input selection mask (for interrupt support)
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//-----------------------------------------------------
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//-----------------------------------------------------
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wire [15:0] inst_src_in = reg_sr_clr ? 16'h0004 : inst_src;
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assign inst_src_in = reg_sr_clr ? 16'h0004 : inst_src;
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// R0: Program counter
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// R0: Program counter
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//---------------------
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//---------------------
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