DSP soft processors

Hi folks,
are there any DSP soft processor cores for fpgas available. I have done
a search and only found 32 bit RISCs but no DSP processor cores.
Thanks in advance
Sudhir

I have seen one or two, but it was a long time ago. People doing DSP on
FPGAs prefer implementing the function directly in hardware as it's
much faster and more cost-effective.

Leon

Sudhir.Singh@email.com wrote:
> Hi folks,
> are there any DSP soft processor cores for fpgas available. I have done
> a search and only found 32 bit RISCs but no DSP processor cores.
> Thanks in advance
> Sudhir
> 


Why?

If you have  DSP function to perform, do it in hardware, it is much 
faster and consumes less power.  Otherwise, use a dedicated DSP 
microprocessor...again, far faster and consumes less power, and more 
supportable.

Sudhir.Singh@email.com wrote:

> Hi folks,
> are there any DSP soft processor cores for fpgas available. I have done
> a search and only found 32 bit RISCs but no DSP processor cores.
> Thanks in advance
> Sudhir

  I thought the tool flows supported this now, but via the DSP blocks ?
-ie rather than a separate 'core', you compile what you want, into
as many DSP Cells as you need ?
  A Soft-DSP will never be as fast as a dedicated device, the key
in FPGA is to spawn DSP in parallel and in HW.
  Check with Altera, Lattice, Xilinx...
-jg

Jim Granville wrote:

> Sudhir.Singh@email.com wrote:
> 
>> Hi folks,
>> are there any DSP soft processor cores for fpgas available. I have done
>> a search and only found 32 bit RISCs but no DSP processor cores.
>> Thanks in advance
>> Sudhir
> 
> 
>  I thought the tool flows supported this now, but via the DSP blocks ?
> -ie rather than a separate 'core', you compile what you want, into
> as many DSP Cells as you need ?
>  A Soft-DSP will never be as fast as a dedicated device, the key
> in FPGA is to spawn DSP in parallel and in HW.
>  Check with Altera, Lattice, Xilinx...

  For a topical update on this, check Xilinx website news on their
purchase of AccelChip.

  As you can see, these newest tool flows somewhat side-step the need for
DSP Cores, per-se.

-jg