// -- (c) Copyright 2010 - 2013 Xilinx, Inc. All rights reserved.
// --
// -- This file contains confidential and proprietary information
// -- of Xilinx, Inc. and is protected under U.S. and 
// -- international copyright and other intellectual property
// -- laws.
// --
// -- DISCLAIMER
// -- This disclaimer is not a license and does not grant any
// -- rights to the materials distributed herewith. Except as
// -- otherwise provided in a valid license issued to you by
// -- Xilinx, and to the maximum extent permitted by applicable
// -- law: (1) THESE MATERIALS ARE MADE AVAILABLE "AS IS" AND
// -- WITH ALL FAULTS, AND XILINX HEREBY DISCLAIMS ALL WARRANTIES
// -- AND CONDITIONS, EXPRESS, IMPLIED, OR STATUTORY, INCLUDING
// -- BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY, NON-
// -- INFRINGEMENT, OR FITNESS FOR ANY PARTICULAR PURPOSE; and
// -- (2) Xilinx shall not be liable (whether in contract or tort,
// -- including negligence, or under any other theory of
// -- liability) for any loss or damage of any kind or nature
// -- related to, arising under or in connection with these
// -- materials, including for any direct, or any indirect,
// -- special, incidental, or consequential loss or damage
// -- (including loss of data, profits, goodwill, or any type of
// -- loss or damage suffered as a result of any action brought
// -- by a third party) even if such damage or loss was
// -- reasonably foreseeable or Xilinx had been advised of the
// -- possibility of the same.
// --
// -- CRITICAL APPLICATIONS
// -- Xilinx products are not designed or intended to be fail-
// -- safe, or for use in any application requiring fail-safe
// -- performance, such as life-support or safety devices or
// -- systems, Class III medical devices, nuclear facilities,
// -- applications related to the deployment of airbags, or any
// -- other applications that could lead to death, personal
// -- injury, or severe property or environmental damage
// -- (individually and collectively, "Critical
// -- Applications"). Customer assumes the sole risk and
// -- liability of any use of Xilinx products in Critical
// -- Applications, subject only to applicable laws and
// -- regulations governing limitations on product liability.
// --
// -- THIS COPYRIGHT NOTICE AND DISCLAIMER MUST BE RETAINED AS
// -- PART OF THIS FILE AT ALL TIMES.
//-----------------------------------------------------------------------------
//
// Description: 
//  Optimized AND with carry logic.
//
// Verilog-standard:  Verilog 2001
//--------------------------------------------------------------------------
//
// Structure:
//   
//
//--------------------------------------------------------------------------
`timescale 1ps/1ps


module mig_7series_v4_2_ddr_carry_and #
  (
   parameter         C_FAMILY                         = "virtex6"
                       // FPGA Family. Current version: virtex6 or spartan6.
   )
  (
   input  wire        CIN,
   input  wire        S,
   output wire        COUT
   );
  
  
  /////////////////////////////////////////////////////////////////////////////
  // Variables for generating parameter controlled instances.
  /////////////////////////////////////////////////////////////////////////////
  
  
  /////////////////////////////////////////////////////////////////////////////
  // Local params
  /////////////////////////////////////////////////////////////////////////////
  
  
  /////////////////////////////////////////////////////////////////////////////
  // Functions
  /////////////////////////////////////////////////////////////////////////////
  
  
  /////////////////////////////////////////////////////////////////////////////
  // Internal signals
  /////////////////////////////////////////////////////////////////////////////

  
  /////////////////////////////////////////////////////////////////////////////
  // Instantiate or use RTL code
  /////////////////////////////////////////////////////////////////////////////
  
  generate
    if ( C_FAMILY == "rtl" ) begin : USE_RTL
      assign COUT = CIN & S;
      
    end else begin : USE_FPGA
      MUXCY and_inst 
      (
       .O (COUT), 
       .CI (CIN), 
       .DI (1'b0), 
       .S (S)
      ); 
      
    end
  endgenerate
  
  
endmodule

