Subversion Repositories pipelined_fft_256

/////////////////////////////////////////////////////////////////////
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////  FFT/IFFT 256 points transform                              ////
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////  Authors: Anatoliy Sergienko, Volodya Lepeha                ////
////  Company: Unicore Systems http://unicore.co.ua              ////
////                                                             ////
////  Downloaded from: http://www.opencores.org                  ////
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/////////////////////////////////////////////////////////////////////
////                                                             ////
//// Copyright (C) 2006-2010 Unicore Systems LTD                 ////
//// www.unicore.co.ua                                           ////
//// o.uzenkov@unicore.co.ua                                     ////
////                                                             ////
//// This source file may be used and distributed without        ////
//// restriction provided that this copyright statement is not   ////
//// removed from the file and that any derivative work contains ////
//// the original copyright notice and the associated disclaimer.////
////                                                             ////
//// THIS SOFTWARE IS PROVIDED "AS IS"                           ////
//// AND ANY EXPRESSED OR IMPLIED WARRANTIES,                    ////
//// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED                  ////
//// WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT              ////
//// AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.        ////
//// IN NO EVENT SHALL THE UNICORE SYSTEMS OR ITS                ////
//// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,            ////
//// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL            ////
//// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT         ////
//// OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,               ////
//// DATA, OR PROFITS; OR BUSINESS INTERRUPTION)                 ////
//// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,              ////
//// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT              ////
//// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING                 ////
//// IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,                 ////
//// EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.          ////
////                                                             ////
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~           
// DESCRIPTION  :        Parameter file
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~   
        
`timescale 10 ps / 1ps

//input data bit width
`define FFT256paramnb parameter nb=10;

//twiddle factor bit width
`define FFT256paramnw parameter nw=10;

//when is absent then FFT, when is present then IFFT 
//`define FFT256paramifft ;     

//buffer number 2 or 3
`define FFT256parambuffers3     

// buffer type: 1 ports in RAMS else -2 ports RAMS
//`define FFT256bufferports1

//Coeficient  bit width is increased  to high
//`define FFT256bitwidth_coef_high


//Rounding butterfly results
//`define FFT256round