[hpsdr] hpsdr Digest, Vol 3, Issue 42

[Larry Gadallah]

Hi Lyle:

I'm certainly a bigger fan of the AD DSPs than of the TIs, however, I don't
know if there are any better open source tools for the AD, but I do know the
code is easier to read (and presumably easier to work on) so I'd be
interested in an AD-based card.

73,


Message: 6
> Date: Sat, 27 May 2006 13:19:00 -0700
> From: Lyle Johnson <kk7p at wavecable.com>
> Subject: [hpsdr] Yeti?  Sasquatch relative...
> To: hpsdr at hpsdr.org
> Message-ID: <4478B434.1050408 at wavecable.com>
> Content-Type: text/plain; charset=windows-1252; format=flowed
>
> Sasquatch will be using a high-end TI floating point DSP.  That's the
> good news.
>
> The bad news is that there are no inexpensive tools to use with it.
> That puts real pressure on the folks writing code for it, and severely
> limits everyone else's ability to play.
>
> IS there interest in a simpler DSP board with free tools to allow easier
> experimentation?
>
> For example, the Analog Devices ADSP-218x series of parts (the same one
> I use in my DSPx and as used in Pic A Star, DSP-10, etc.) has free
> DOS-based tools.  They run in Windows, as well, and probably under
> DOSEMU for the Linux-persuaded.
>
> This is a 16-bit fixed-point part that runs at 80 million native
> instructions per second.  Analog Devices claims more, but that's because
> they assert that a multiply-accumulate is two operations, along with an
> address calculation and a shift...  So it does 320 million marketing
> MIPS under special circumstances.
>
> Anyway, this could be a fun and cheap part to play with for those so
> inclined.
>
> Texas Instruments makes the TMS320VC33.  This is a 75 million native
> instructions per second (yeah, their marketing people claim more...)
> 32-bit floating point part.  You can download a version of the tools for
> this part for free from the TI web site.  Takes a bit of playing around
> to use them without the "University DSK" for which they are intended,
> but they are free and do run.  There is also some sort of port to the
> Gnu compilers for this part, I think.  It has small enough memory and
> limited enough resources that you want to think twice about using C
> rather than assembler, though.
>
> Anyone on the list know of any other DSPs that have decent, free tools?
>
> Any interest in such a "Yeti" project for the HPSDR?
>
> 73,
>
> Lyle KK7P
>
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> End of hpsdr Digest, Vol 3, Issue 42
> ************************************
>



-- 
Larry Gadallah, VE6VQ/W7
lgadallah AT gmail DOT com
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