adder4.twr

这是个基于 Xilinx Spartan3 的加法器

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Release 6.3i Trace G.35
Copyright (c) 1995-2004 Xilinx, Inc.  All rights reserved.

D:/Xilinx/bin/nt/trce.exe -intstyle ise -e 3 -l 3 -xml adder4 adder4.ncd -o
adder4.twr adder4.pcf


Design file:              adder4.ncd
Physical constraint file: adder4.pcf
Device,speed:             xc2s15,-6 (PRODUCTION 1.27 2004-06-25)
Report level:             error report

Environment Variable      Effect 
--------------------      ------ 
NONE                      No environment variables were set
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INFO:Timing:2698 - No timing constraints found, doing default enumeration.
INFO:Timing:2752 - To get complete path coverage, use the unconstrained paths
   option. All paths that are not constrained will be reported in the
   unconstrained paths section(s) of the report.


Data Sheet report:
-----------------
All values displayed in nanoseconds (ns)

Pad to Pad
---------------+---------------+---------+
Source Pad     |Destination Pad|  Delay  |
---------------+---------------+---------+
cin            |cout           |   10.891|
cin            |sum<0>         |    9.688|
cin            |sum<1>         |    9.664|
cin            |sum<2>         |    9.395|
cin            |sum<3>         |    9.447|
ina<0>         |cout           |   10.564|
ina<0>         |sum<0>         |    8.531|
ina<0>         |sum<1>         |    9.337|
ina<0>         |sum<2>         |    9.068|
ina<0>         |sum<3>         |    9.120|
ina<1>         |cout           |   10.424|
ina<1>         |sum<1>         |    8.516|
ina<1>         |sum<2>         |    8.928|
ina<1>         |sum<3>         |    8.980|
ina<2>         |cout           |   10.374|
ina<2>         |sum<2>         |    8.048|
ina<2>         |sum<3>         |    8.930|
ina<3>         |cout           |   10.286|
ina<3>         |sum<3>         |    8.161|
inb<0>         |cout           |   10.633|
inb<0>         |sum<0>         |    8.600|
inb<0>         |sum<1>         |    9.406|
inb<0>         |sum<2>         |    9.137|
inb<0>         |sum<3>         |    9.189|
inb<1>         |cout           |   10.756|
inb<1>         |sum<1>         |    8.848|
inb<1>         |sum<2>         |    9.260|
inb<1>         |sum<3>         |    9.312|
inb<2>         |cout           |   10.542|
inb<2>         |sum<2>         |    8.216|
inb<2>         |sum<3>         |    9.098|
inb<3>         |cout           |   10.675|
inb<3>         |sum<3>         |    8.550|
---------------+---------------+---------+

Analysis completed Sun Dec 18 17:59:37 2005
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Peak Memory Usage: 40 MB