Hi everybody, I have a board with a spartan-II (xc2s200-5FG456) but I'm running out of area, I wonder if it's possible to mount another FPGA on the same board (without having to redo the board layout, or with minor modifcations like swapping a GND with a Vcc): someone told me that some Spartan3 are pin compatible with my FPGA, but the Spartan3 datasheet says the opposite. Does anybody know?
Thanks,
Pleg
Basically you don't stand much chance. Power supplies are different, S3 is not 5V tolerant whereas S2 is and so on.
What you may be able to do is shrink your design. There are many techniques to do this with most relying on a good understanding architectures and synthesisers. I have seen up to about 40-50 percent reduction achieved but that depends on a awful lot of things.
If play with settings in tools you might with lucky and get 10-20 percent size reduction so do try if that might be enough for your needs.
John Adair Enterpo> Hi everybody,
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