Subversion Repositories an-fpga-implementation-of-low-latency-noc-based-mpsoc

// =============================================================================

//                           COPYRIGHT NOTICE

// Copyright 2006 (c) Lattice Semiconductor Corporation

// ALL RIGHTS RESERVED

// This confidential and proprietary software may be used only as authorised by

// a licensing agreement from Lattice Semiconductor Corporation.

// The entire notice above must be reproduced on all authorized copies and

// copies may only be made to the extent permitted by a licensing agreement from

// Lattice Semiconductor Corporation.

//

// Lattice Semiconductor Corporation        TEL : 1-800-Lattice (USA and Canada)

// 5555 NE Moore Court                            408-826-6000 (other locations)

// Hillsboro, OR 97124                     web  : http://www.latticesemi.com/

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// =============================================================================/

//                         FILE DETAILS

// Project          : LatticeMico32

// File             : lm32_addsub.v

// Title            : PMI adder/subtractor.

// Version          : 6.1.17

// =============================================================================

`include "lm32_include.v"

/////////////////////////////////////////////////////

// Module interface

/////////////////////////////////////////////////////

module lm32_addsub (

    // ----- Inputs -------

    DataA,

    DataB,

    Cin,

    Add_Sub,

    // ----- Outputs -------

    Result,

    Cout

    );

/////////////////////////////////////////////////////

// Inputs

/////////////////////////////////////////////////////

input [31:0] DataA;

input [31:0] DataB;

input Cin;

input Add_Sub;

/////////////////////////////////////////////////////

// Outputs

/////////////////////////////////////////////////////

output [31:0] Result;

wire   [31:0] Result;

output Cout;

wire   Cout;

/////////////////////////////////////////////////////

// Instantiations

///////////////////////////////////////////////////// 

             wire [32:0] tmp_addResult = DataA + DataB + Cin;

             wire [32:0] tmp_subResult = DataA - DataB - !Cin;

             assign  Result = (Add_Sub == 1) ? tmp_addResult[31:0] : tmp_subResult[31:0];

             assign  Cout = (Add_Sub == 1) ? tmp_addResult[32] : !tmp_subResult[32];

endmodule