Olin Lathrop wrote:
> Michael Watterson wrote:
>   
>> I'd not regard the dsPIC as a useful DSP platform at all.
>>     
>
> That's a rather limited view.  The dsPIC can do single cycle
> multiply-accumulates into a wide accumulator, which qualifies it as "DSP".
> To be sure it's not high end, but neither is the price.  There are certainly
> embedded DSP problems a dsPIC can address.  At 30M multiply-accumulates per
> second, a 30F can get some useful DSP work done.  That's a 3000 point
> convolution on a 10KHz sample stream, for example.  A 33F can run even
> faster.  To put this in perspective, that means you can realize just about
> any linear filter you can dream up for a voice stream.
>
>   
I'll agree the 30F is useful. after all it's a MIPS.

But I've seen primitive  real  DSP even on a 16F. I'm doing some "real" 
DSP on 18F.  Read Microchip's description of 8x8 in the 18F4550 
datasheet. They certainly mention something about DSP.
 
I just don't think the dsPIC are good value for serious DSP.


It all depends on your required sample rate and amount of filtering :-)
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