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Visitor
Visitor
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Registered: ‎12-02-2008

Pblock resources (Slice) could not be used in V5 P&R

Hi,

     I'm using the V5 Lx330(ff1760) in my design.

     I've drawed some Pblocks for some of my design's sub-modules. My problematic pblocks include the slices which are from SLICE_X208Yzz to SLICE_X215Yzz. (i.e. all the slices on rigth of the IOB resource as shown in the plan-ahead for the LX330FF1760; "zz" is any number and means the whole "column").

     After P&R, I found that my design's sub-modules do not occupy any resource (LUT nor FF) in the SLICE area which I've assigned as mentioned before.

     I would like to ask do these slices are reserved for other special purpose so that the P&R tools will not use these slices or there is some fix for this problem? (I'm using ISE V10.1)

 

Regards,

CH

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