Re: Low Cost Hardware Flaoting Point processor? whats available

"The Real Andy" <.pearson@wayit_dot_com_dot_au_remove_the_obvious_to_reply>
wrote in message news:cklt71tbtrlebglmrs9d5q76k3s9g6e2ju@xxxxxxxxxx
>I need to find a low cost FPU to interface to a Rabbit 2000 processor.
> Having done no embedded hardware design in the last 3-4 years I have
> found myself already drifing away from current trends.
>
> As for the exact precision, no sure at this stage. Still investigating
> and open on this one. I prefer to avoid DSP's if at all possible and
> need something that will interface to an 8 bit wide General IO port on
> the rabbit, so bitbashing serial would also be fine.
>
> All i can find on google is ARM's and DSP's, which are a bit of an
> overkill. If it comes to this a complete redisgn will be done, which I
> would dearly love to avoid.

I don't think anyone makes FPUs any more. If you can't do the FP fast enough
on the Rabbit, using an ARM is probably the way to go. The Philips LPC2000
chips are very cheap - you could either use one as an FPU or redesign the
whole system. Of course, that depends on whether the software FP on the ARM
is fast enough for you, otherwise you'll have to use a device with hardware
FP.

Leon
--
Leon Heller, G1HSM
http://www.geocities.com/leon_heller

Leon


.

Relevant Pages