FPGAs tend not to run as fast as dedicated logic. They can be very wide, but depending on what you are doing the clock speed is usually two to ten times slower and sometimes more. Of course, FPGAs can do custom workloads in many cases without the overhead of instruction fetch and decode, etc., so even with the clock rate penalty some serial code is faster in an FPGA. It will be interesting to see how they clock the FPGA portion and what sort of clock rates are possible. On Mon, Jun 23, 2014 at 7:51 AM, Whitfield Diffie <whitfield.diffie@gmail.com> wrote:
Maybe you'd like to run preexisting software rather than build everything from scratch.
I assume for that it would be sufficient to have a Pentium programmed in your FPGA as the default. However, some things like floating point that need to be very fast may also be a good fraction of the legacy processor so that once you have those, there is no reason not to include the whole thing.
Whit
_______________________________________________ math-fun mailing list math-fun@mailman.xmission.com https://mailman.xmission.com/cgi-bin/mailman/listinfo/math-fun
-- -- http://cube20.org/ -- http://golly.sf.net/ --