Back port Virtex5 FPU to Virtex4?

Grant Likely grant.likely at
Thu Sep 18 03:35:55 EST 2008

On Tue, Aug 26, 2008 at 04:00:42PM -0400, Shanyuan Gao wrote:
> I am working with ML410 and have FPU (single precision) working.   
> However, the FPU for V5 looks more attractive because it's double  
> precision.  So is it possible to back port the double precision FPU to 
> V4?

As far as I understand there are limitations in the V4 APU interface
that makes the full double precision FPU unfeasible.  The Xilinx folks
can correct me if I'm wrong.


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