device utilization warning while the usage is not greater than 100%

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Fractional-N

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hi,
I get this warning:
Code: 
Xst:1336 - (*) More than 100% of Device resources are used

and this is my device utilization summary:


why this warning appears?
 

At least, for 2 parameters, your design reached available resources limit.
Click to expand...

yes but never exceeded. the warning says "more than 100%" ! is this a software bug?!
 

Fractional-N said:
yes but never exceeded. the warning says "more than 100%" ! is this a software bug?!
Click to expand...

I presume the reason could be even compiler being not able to quantify numerically the required resource utilization beyond what the device has built in, or also could be just a warning description not rightful.

Anyway, do not seems to be a Bug.


+++
 

That device utilization summary looks like the one produce in the ISE GUI after it goes through MAP. Have you looked through the XST report file? It will probably show that XST estimated more resources for the Slices than there are in the part. The report is <design_name>.syr I think.

regards
 

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