m3s081ct.v

这是16位定点dsp源代码。已仿真和综合过了

//*******************************************************************       //
//IMPORTANT NOTICE                                                          //
//================                                                          //
//Copyright Mentor Graphics Corporation 1996 - 1998.  All rights reserved.  //
//This file and associated deliverables are the trade secrets,              //
//confidential information and copyrighted works of Mentor Graphics         //
//Corporation and its licensors and are subject to your license agreement   //
//with Mentor Graphics Corporation.                                         //
//                                                                          //
//These deliverables may be used for the purpose of making silicon for one  //
//IC design only.  No further use of these deliverables for the purpose of  //
//making silicon from an IC design is permitted without the payment of an   //
//additional license fee.  See your license agreement with Mentor Graphics  //
//for further details.  If you have further questions please contact        //
//Mentor Graphics Customer Support.                                         //
//                                                                          //
//This Mentor Graphics core (m320c50eng v1999.010) was extracted on         //
//workstation hostid 800059c1 Inventra                                      //
// Incrementer 4-Bit Slice
// Copyright Mentor Graphics Corporation and Licensors 1998.
// V1.000

// m3s081ct.v
// M320C50 look-ahead carry incrementer 4-bit slice
// for port address incrementer.

module m3s081ct (DataIn, Carry, DataOut);
//*******************************************************************       //
//IMPORTANT NOTICE                                                          //
//================                                                          //
//Copyright Mentor Graphics Corporation 1996 - 1998.  All rights reserved.  //
//This file and associated deliverables are the trade secrets,              //
//confidential information and copyrighted works of Mentor Graphics         //
//Corporation and its licensors and are subject to your license agreement   //
//with Mentor Graphics Corporation.                                         //
//                                                                          //
//These deliverables may be used for the purpose of making silicon for one  //
//IC design only.  No further use of these deliverables for the purpose of  //
//making silicon from an IC design is permitted without the payment of an   //
//additional license fee.  See your license agreement with Mentor Graphics  //
//for further details.  If you have further questions please contact        //
//Mentor Graphics Customer Support.                                         //
//                                                                          //
//This Mentor Graphics core (m320c50eng v1999.010) was extracted on         //
//workstation hostid 800059c1 Inventra                                      //
    input  [3:0] DataIn;
    input        Carry;
    output [3:0] DataOut;

    wire [3:0] DataOut;
    reg        DataOut0, DataOut1;

// Lower two bits
always @(DataIn or Carry)
begin
    DataOut0 = DataIn[0] ^ Carry;
    DataOut1 = DataIn[1] ^ (DataIn[0] & Carry);
end
assign DataOut[1:0] = {DataOut1, DataOut0};

// Upper two bits
m3s082ct U1 (DataIn[2:0], Carry, DataOut[2]);
m3s083ct U2 (DataIn[3:0], Carry, DataOut[3]);

endmodule