d.syr

四人抢答器的实现

Release 6.2i - xst G.28
Copyright (c) 1995-2004 Xilinx, Inc.  All rights reserved.
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--> Reading design: d.prj

TABLE OF CONTENTS
  1) Synthesis Options Summary
  2) HDL Compilation
  3) HDL Analysis
  4) HDL Synthesis
  5) Advanced HDL Synthesis
     5.1) HDL Synthesis Report
  6) Low Level Synthesis
  7) Final Report
     7.1) Device utilization summary
     7.2) TIMING REPORT


=========================================================================
*                      Synthesis Options Summary                        *
=========================================================================
---- Source Parameters
Input File Name                    : d.prj
Input Format                       : mixed
Ignore Synthesis Constraint File   : NO
Verilog Include Directory          : 

---- Target Parameters
Output File Name                   : d
Output Format                      : NGC
Target Device                      : xc2s50-6-tq144

---- Source Options
Top Module Name                    : d
Automatic FSM Extraction           : YES
FSM Encoding Algorithm             : Auto
FSM Style                          : lut
RAM Extraction                     : Yes
RAM Style                          : Auto
ROM Extraction                     : Yes
ROM Style                          : Auto
Mux Extraction                     : YES
Mux Style                          : Auto
Decoder Extraction                 : YES
Priority Encoder Extraction        : YES
Shift Register Extraction          : YES
Logical Shifter Extraction         : YES
XOR Collapsing                     : YES
Resource Sharing                   : YES
Multiplier Style                   : lut
Automatic Register Balancing       : No

---- Target Options
Add IO Buffers                     : YES
Global Maximum Fanout              : 100
Add Generic Clock Buffer(BUFG)     : 4
Register Duplication               : YES
Equivalent register Removal        : YES
Slice Packing                      : YES
Pack IO Registers into IOBs        : auto

---- General Options
Optimization Goal                  : Speed
Optimization Effort                : 1
Keep Hierarchy                     : NO
Global Optimization                : AllClockNets
RTL Output                         : Yes
Write Timing Constraints           : NO
Hierarchy Separator                : _
Bus Delimiter                      : <>
Case Specifier                     : maintain
Slice Utilization Ratio            : 100
Slice Utilization Ratio Delta      : 5

---- Other Options
lso                                : d.lso
Read Cores                         : YES
cross_clock_analysis               : NO
verilog2001                        : YES
Optimize Instantiated Primitives   : NO
tristate2logic                     : No

=========================================================================


=========================================================================
*                          HDL Compilation                              *
=========================================================================
Compiling vhdl file E:/VHDL/waitpast/qiangdaqi4ren/d.vhdl in Library work.
Architecture behavioral of Entity d is up to date.

=========================================================================
*                            HDL Analysis                               *
=========================================================================
Analyzing Entity <d> (Architecture <behavioral>).
Entity <d> analyzed. Unit <d> generated.


=========================================================================
*                           HDL Synthesis                               *
=========================================================================

Synthesizing Unit <d>.
    Related source file is E:/VHDL/waitpast/qiangdaqi4ren/d.vhdl.
    Found 1-bit register for signal <q>.
    Found 2-bit comparator less for signal <$n0002> created at line 23.
    Found 2-bit up counter for signal <cnt>.
    Summary:
	inferred   1 Counter(s).
	inferred   1 D-type flip-flop(s).
	inferred   1 Comparator(s).
Unit <d> synthesized.


=========================================================================
*                       Advanced HDL Synthesis                          *
=========================================================================

Advanced RAM inference ...
Advanced multiplier inference ...
Dynamic shift register inference ...

=========================================================================
HDL Synthesis Report

Macro Statistics
# Counters                         : 1
 2-bit up counter                  : 1
# Registers                        : 1
 1-bit register                    : 1
# Comparators                      : 1
 2-bit comparator less             : 1

=========================================================================

=========================================================================
*                         Low Level Synthesis                           *
=========================================================================

Optimizing unit <d> ...
Loading device for application Xst from file 'v50.nph' in environment C:/Xilinx.

Mapping all equations...
Building and optimizing final netlist ...
Found area constraint ratio of 100 (+ 5) on block d, actual ratio is 0.

=========================================================================
*                            Final Report                               *
=========================================================================
Final Results
RTL Top Level Output File Name     : d.ngr
Top Level Output File Name         : d
Output Format                      : NGC
Optimization Goal                  : Speed
Keep Hierarchy                     : NO

Design Statistics
# IOs                              : 3

Macro Statistics :
# Registers                        : 2
#      1-bit register              : 1
#      2-bit register              : 1
# Comparators                      : 1
#      2-bit comparator less       : 1

Cell Usage :
# BELS                             : 4
#      LUT1                        : 1
#      LUT1_D                      : 1
#      LUT1_L                      : 1
#      LUT2_L                      : 1
# FlipFlops/Latches                : 3
#      FDE                         : 1
#      FDRE                        : 2
# Clock Buffers                    : 1
#      BUFGP                       : 1
# IO Buffers                       : 2
#      IBUF                        : 1
#      OBUF                        : 1
=========================================================================

Device utilization summary:
---------------------------

Selected Device : 2s50tq144-6 

 Number of Slices:                       2  out of    768     0%  
 Number of Slice Flip Flops:             3  out of   1536     0%  
 Number of 4 input LUTs:                 4  out of   1536     0%  
 Number of bonded IOBs:                  2  out of     96     2%  
 Number of GCLKs:                        1  out of      4    25%  


=========================================================================
TIMING REPORT

NOTE: THESE TIMING NUMBERS ARE ONLY A SYNTHESIS ESTIMATE.
      FOR ACCURATE TIMING INFORMATION PLEASE REFER TO THE TRACE REPORT
      GENERATED AFTER PLACE-and-ROUTE.

Clock Information:
------------------
-----------------------------------+------------------------+-------+
Clock Signal                       | Clock buffer(FF name)  | Load  |
-----------------------------------+------------------------+-------+
clk                                | BUFGP                  | 3     |
-----------------------------------+------------------------+-------+

Timing Summary:
---------------
Speed Grade: -6

   Minimum period: 4.761ns (Maximum Frequency: 210.040MHz)
   Minimum input arrival time before clock: 4.471ns
   Maximum output required time after clock: 6.788ns
   Maximum combinational path delay: No path found

Timing Detail:
--------------
All values displayed in nanoseconds (ns)

-------------------------------------------------------------------------
Timing constraint: Default period analysis for Clock 'clk'
Delay:               4.761ns (Levels of Logic = 1)
  Source:            cnt_1 (FF)
  Destination:       cnt_1 (FF)
  Source Clock:      clk rising
  Destination Clock: clk rising

  Data Path: cnt_1 to cnt_1
                                Gate     Net
    Cell:in->out      fanout   Delay   Delay  Logical Name (Net Name)
    ----------------------------------------  ------------
     FDRE:C->Q             2   1.085   1.206  cnt_1 (cnt_1)
     LUT1_D:I0->O          1   0.549   1.035  Mcompar__n0002_ALB1 (_n0002)
     FDRE:CE                   0.886          cnt_1
    ----------------------------------------
    Total                      4.761ns (2.520ns logic, 2.241ns route)
                                       (52.9% logic, 47.1% route)

-------------------------------------------------------------------------
Timing constraint: Default OFFSET IN BEFORE for Clock 'clk'
Offset:              4.471ns (Levels of Logic = 2)
  Source:            d (PAD)
  Destination:       cnt_1 (FF)
  Destination Clock: clk rising

  Data Path: d to cnt_1
                                Gate     Net
    Cell:in->out      fanout   Delay   Delay  Logical Name (Net Name)
    ----------------------------------------  ------------
     IBUF:I->O             2   0.776   1.206  d_IBUF (d_IBUF)
     LUT1:I0->O            2   0.549   1.206  cnt_Sclr_INV1 (cnt_0_N24)
     FDRE:R                    0.734          cnt_0
    ----------------------------------------
    Total                      4.471ns (2.059ns logic, 2.412ns route)
                                       (46.1% logic, 53.9% route)

-------------------------------------------------------------------------
Timing constraint: Default OFFSET OUT AFTER for Clock 'clk'
Offset:              6.788ns (Levels of Logic = 1)
  Source:            q (FF)
  Destination:       q (PAD)
  Source Clock:      clk rising

  Data Path: q to q
                                Gate     Net
    Cell:in->out      fanout   Delay   Delay  Logical Name (Net Name)
    ----------------------------------------  ------------
     FDE:C->Q              1   1.085   1.035  q (q_OBUF)
     OBUF:I->O                 4.668          q_OBUF (q)
    ----------------------------------------
    Total                      6.788ns (5.753ns logic, 1.035ns route)
                                       (84.8% logic, 15.2% route)

=========================================================================
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