Architecture of FPGA

halong wrote:
>
> Spherical would be ideal

I disagree. I think toroidal is the optimum topology.
Syms. 

"Symon" <symon_brewer@hotmail.com> writes:

> I disagree. I think toroidal is the optimum topology.

Torodial is/was already done (if I remember right it was no FPGA, but one of
Raytheone many core/massiv parallel units).

Its relativly easy doable. You could also do it with a island style FPGA
with slightly different routing, by interleaving:

          -------  -----  -----
          |      \/     \/     \
          x---x   x   x  x  x  x--x
              |      /\    /\     |
              -------  ----  ------

(I am no good ASCI artist, but I hope the idea is clear (x island, rest
routing, same approach for vertical, as this is only horizontaly))

Florian