Xilinx Xplorer misfunction

Hello,

I would like to know if anyone experiences this misfunction in Xplorer tool. I'm using Xilinx ISE 8.2i.

When I use Xplorer, it always finds the right implementation parameters on the third run (the report is attached below). Then it tells me that the best parameters will be updated in my project configuration within ISE. I check the command line that succeded (in

3rd run), and I check my configuration in ISE. They seem to match. However, if I inmediately implement it with those parameters without using Xplorer, my timing constraints are not met anymore.

Does anyone know why this happens?

Regards.

-------------------------------------------------------

FPGA Xplorer (tm) Version 8.2.02i

2007-03-14 17:33:25

Command: xplorer mydesign.ngc -wd=/FPGA/synthesis -sd=. - uc=mydesign.ucf -p=xc2v2000-ff896-4 -max_runs=7 -intstyle=ise - ise=myproject.ise

--------------------------------------------------------------------- Run 1

--------------------------------------------------------------------- Map options : -p xc2v2000-ff896-4 -timing - ol high -xe n Par options : -w -ol high -xe n Achieved Timing Score : 3419.00 Current Best (Lowest) Timing Score : 3419.00 Current Best Run : 1

---------------------------------------------------------------------

--------------------------------------------------------------------- Run 2

--------------------------------------------------------------------- Map options : -p xc2v2000-ff896-4 -timing - ol high -xe n -register_duplication -logic_opt on Par options : -w -ol high -xe n Achieved Timing Score : 3419.00 Current Best (Lowest) Timing Score : 3419.00 Current Best Run : 1

---------------------------------------------------------------------

--------------------------------------------------------------------- Run 3

--------------------------------------------------------------------- Map options : -p xc2v2000-ff896-4 Par options : -w -ol high -xe n Achieved Timing Score : 0.00 Current Best (Lowest) Timing Score : 0.00 Current Best Run : 3

---------------------------------------------------------------------

--------------------------------------------------------------------- BestRun : Run 3

--------------------------------------------------------------------- Map options : -p xc2v2000-ff896-4 Par options : -w -ol high -xe n Achieved Timing Score : 0.00

---------------------------------------------------------------------

Reply to
Frai
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Have you tried running map and par with the xplorer parameters in command line mode (outside of the ISE GUI environment)? I suspect that there are some other options set by GUI, which xplorer doesn't use...

/Mikhail

Reply to
MM

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