Ошибка маппинга Опции

[D-Luxe]

Во время синтеза проекта в среде EDK мэппер выкинул следующие ошибки.

Код

#----------------------------------------------#
# Starting program map
# map -o system_map.ncd -pr b -ol high -timing system.ngd system.pcf
#----------------------------------------------#

Release 10.1 - Map K.39 (nt)
Copyright (c) 1995-2008 Xilinx, Inc.  All rights reserved.
PMSPEC -- Overriding Xilinx file <c:/Xilinx/10.1/ISE/virtex4/data/virtex4.acd>
with local file <c:/Xilinx/10.1/ISE/virtex4/data/virtex4.acd>
Using target part "4vfx20ff672-11".

Mapping design into LUTs...

ERROR:MapLib:979 - LUT3 symbol "ip_header_0/ip_header_0/RFF_DATA_OUT<20>1"
   (output signal=IP_TO_R_RFF_DATA<20>) has input signal
   "ip_header_0/ip_header_0/bytes4_cnt<4>" which will be trimmed. See Section 5
   of the Map Report File for details about why the input signal will become
   undriven.
ERROR:MapLib:979 - LUT3 symbol "ip_header_0/ip_header_0/RFF_DATA_OUT<20>1"
   (output signal=IP_TO_R_RFF_DATA<20>) has input signal
   "ip_header_0/ip_header_0/remove4bytes" which will be trimmed. See Section 5
   of the Map Report File for details about why the input signal will become
   undriven.
ERROR:MapLib:979 - LUT4 symbol "ip_header_0/ip_header_0/write_packet1" (output
   signal=IP_TO_R_WR_REQ) has input signal
   "ip_header_0/ip_header_0/bytes4_cnt<4>1" which will be trimmed. See Section 5
   of the Map Report File for details about why the input signal will become
   undriven.
ERROR:MapLib:978 - LUT3 symbol "ip_header_0/ip_header_0/RFF_DATA_OUT<20>1"
   (output signal=IP_TO_R_RFF_DATA<20>) has an equation that uses input pin I0,
   which no longer has a connected signal. Please ensure that all the pins used
   in the equation for this LUT have signals that are not trimmed (see Section 5
   of the Map Report File for details on which signals were trimmed).
ERROR:MapLib:978 - LUT3 symbol "ip_header_0/ip_header_0/RFF_DATA_OUT<20>1"
   (output signal=IP_TO_R_RFF_DATA<20>) has an equation that uses input pin I1,
   which no longer has a connected signal. Please ensure that all the pins used
   in the equation for this LUT have signals that are not trimmed (see Section 5
   of the Map Report File for details on which signals were trimmed).
ERROR:MapLib:978 - LUT4 symbol "ip_header_0/ip_header_0/write_packet1" (output
   signal=IP_TO_R_WR_REQ) has an equation that uses input pin I3, which no
   longer has a connected signal. Please ensure that all the pins used in the
   equation for this LUT have signals that are not trimmed (see Section 5 of the
   Map Report File for details on which signals were trimmed).


Error found in mapping process, exiting...
Errors found during the mapping phase.  Please see map report file for more
details.  Output files will not be written.

Design Summary
--------------
Number of errors   :   6
Number of warnings :   2
ERROR:Xflow - Program map returned error code 2. Aborting flow execution...

В чем причина?