I have made a floating point multiplier
i have problem in Xilinx 8.2i synthesis, it does not show the timing analysis of the multiplier
It is showing the following statements:
" 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:
------------------
No clock signals found in this design
Asynchronous Control Signals Information:
----------------------------------------
No asynchronous control signals found in this design
Timing Summary:
---------------
Speed Grade: -5
Minimum period: No path found
Minimum input arrival time before clock: No path found
Maximum output required time after clock: No path found
Maximum combinational path delay: No path found
Timing Detail:
--------------
All values displayed in nanoseconds (ns)"
Actually i have also used 12.1 version of ISE
but it did not give me the timing result of my program......
it just showing that "NO PATH FOUND" in Synthesize result..
Can you please tell me what is the problrm????
This usually happens when all of your logic is synthesised away, for various resons, but the two usual culprits are
1. you have no outputs
2. a clock is stuck at 1 or 0, or a reset is stuck at '1', or an enable stuck at '0'.