source: XOpenSparcT1/trunk/T1-CPU/exu/sparc_exu_rml_inc3.v @ 6

Revision 6, 1.7 KB checked in by pntsvt00, 13 years ago (diff)

versione iniziale opensparc

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1// ========== Copyright Header Begin ==========================================
2//
3// OpenSPARC T1 Processor File: sparc_exu_rml_inc3.v
4// Copyright (c) 2006 Sun Microsystems, Inc.  All Rights Reserved.
5// DO NOT ALTER OR REMOVE COPYRIGHT NOTICES.
6//
7// The above named program is free software; you can redistribute it and/or
8// modify it under the terms of the GNU General Public
9// License version 2 as published by the Free Software Foundation.
10//
11// The above named program is distributed in the hope that it will be
12// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14// General Public License for more details.
15//
16// You should have received a copy of the GNU General Public
17// License along with this work; if not, write to the Free Software
18// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
19//
20// ========== Copyright Header End ============================================
21module sparc_exu_rml_inc3 (/*AUTOARG*/
22   // Outputs
23   dout, 
24   // Inputs
25   din, inc
26   ) ;
27   input [2:0] din;
28   input       inc;
29   output [2:0] dout;
30
31   assign       dout[2] = ((~din[2] & ~din[1] & ~din[0] & ~inc) |
32                           (~din[2] & din[1] & din[0] & inc) |
33                           (din[2] & din[1] & ~din[0]) |
34                           (din[2] & ~din[1] & inc) |
35                           (din[2] & din[0] & ~inc));
36   assign dout[1] = ((~din[1] & ~din[0] & ~inc) |
37                     (din[1] & ~din[0] & inc) |
38                     (~din[1] & din[0] & inc) |
39                     (din[1] & din[0] & ~inc));
40   assign dout[0] = ~din[0];
41   
42endmodule // sparc_exu_rml_inc3
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