Subversion Repositories robust_fir

<##//////////////////////////////////////////////////////////////////
////                                                             ////
////  Author: Eyal Hochberg                                      ////
////          eyal@provartec.com                                 ////
////                                                             ////
////  Downloaded from: http://www.opencores.org                  ////
/////////////////////////////////////////////////////////////////////
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//// Copyright (C) 2010 Provartec LTD                            ////
//// www.provartec.com                                           ////
//// info@provartec.com                                          ////
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//// This source file is free software; you can redistribute it  ////
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//// PURPOSE.  See the GNU Lesser General Public License for more////
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//////////////////////////////////////////////////////////////////##>

INCLUDE def_fir_basic.txt

##check all input parameters have been given
CHECK CONST(MAC_NUM)

SWAP SON_DELAY  EXPR(COEFF_NUM/MAC_NUM)         ##input delay per son
SWAP SON_COEFF  MAC_NUM                         ##number of son coefficients
SWAP SON_STAGES LOG2(SON_DELAY)                 ##number of binary tree adder stages
SWAP SON_DOUT   EXPR(MULT_BITS+SON_STAGES)      ##bits of son output
SWAP ADD_DOUT   EXPR(SON_DOUT+LOG2(MAC_NUM))    ##bits of adder output

VERIFY(EXPR(COEFF_NUM%MAC_NUM)==0) ##MAC number (multiplayers) must be a division of the coefficient number (FIR order+1)
VERIFY(MAC_NUM>1)                  ##MAC number must be larger than 1 (try using fir_serial.v)
VERIFY(MAC_NUM<COEFF_NUM)          ##MAC number must be smaller than coefficient number (try using fir_parallel.v)