//*******************************************************************       ////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                                      //// Pre-Scaler// Copyright Mentor Graphics Corporation and Licensors 1998. // V1.001// m3s078ct.v// M320C50 ALU pre-scaler, 16-bits in, 32-bits out.//// Cntrl usage://    0 : Shift left 16//    1 : Shift left 16 with rounding (ZALR)//    2 : Suppress sign extensionmodule m3s078ct (ScalerOp, ScalerIp, Shift, Cntrl, SXM);//*******************************************************************       ////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 [15:0] ScalerIp;  input  [3:0] Shift;  input  [2:0] Cntrl;  input        SXM;  output [31:0] ScalerOp;  reg  [7:0] SignExtn;  reg [31:0] ScalerOp;// Generate sign extension bits from SXM and input bit 15always @(Cntrl or SXM or ScalerIp)    if (SXM & ScalerIp[15] & ~Cntrl[2])         SignExtn = 8'hFF;    else SignExtn = 8'b0;always @(ScalerIp or Shift or SignExtn or Cntrl)begin    if (Cntrl[0])        ScalerOp = {ScalerIp,Cntrl[1],15'b0};    else    begin        if (Shift[0])            ScalerOp = {ScalerIp[15:0],1'b0};        else            ScalerOp = {SignExtn[0],ScalerIp[15:0]};        if (Shift[1])            ScalerOp = {ScalerOp[16:0],2'b0};        else            ScalerOp = {SignExtn[1:0],ScalerOp[16:0]};        if (Shift[2])            ScalerOp = {ScalerOp[18:0],4'b0};        else            ScalerOp = {SignExtn[3:0],ScalerOp[18:0]};        if (Shift[3])            ScalerOp = {ScalerOp[22:0],8'b0};         else            ScalerOp = {SignExtn[7:0],ScalerOp[22:0]};        ScalerOp = {SignExtn[0],ScalerOp[30:0]};    endend  endmodule