[hpsdr] Nano-ITX

[ZPO]

Dan,

Very good point.  It mirrors the experiences I had with an earlier
mini-ITX board.  That is the main reason I was aiming for the Intel
based boards with a PCI-E graphics card.  I think if I was running a
distributed setup with the dttsp work on the nano/mini-itx and the UI
on another system, one of the lower-end/speed boards would work fine.
I'm not ready to take that big an experiment jump yet though. hihi....

Once I get a couple boxes dedicated and running dttsp via Janus/Ozy
I'll have a better sense of what can be done.  some nano/mini-ITX
experimentation is definitely in the future.

73 N5VFF/YI9VFF - Brian

On 3/3/07, Dan Babcock <danbabc at yahoo.com> wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
>
>
> Eric and Brian,
>
> I purchased a VIA SP13000 board about a year ago with the intention of using
> it with PowerSDR and the SDR-1000.  The whole setup was a VIA SP13000 MB,
> 512Meg of Memory, a laptop 80 Gig Hard Drive, a laptop DVD drive, a Delta 44
> soundcard and a Travla C138 case.  Despite hours of fiddling I was never
> able to make it work correctly.  The root of the problem appeared to be the
> Unichrome Windows driver for the CN400 integrated video chipset on the
> motherboard.  It seems to be incapable of efficiently handling DirectX.
> With the video displays turned off, the audio processing in PowerSDR worked
> with no problem.  However, when either the spectrum, waterfall or panadapter
> displays were activated on the PowerSDR console, the CPU usage went to 85%
> plus and the audio began dropping out.
>
> The SP13000 is now used as a Linux box interface to a Bitscope PC
> oscilloscope on the workbench.  Bitscope has  a Linux version of their Dso
> software (written in Kylix) and it runs very well.
>
> So. I guess the moral of my story is if you are going to use a mini-ITX or
> nano-ITX form factor MB for the Power SDR console, it is probably best to
> not use a board with a VIA CPU and chipset.  Also, the Northbridge (video)
> chip and its video driver are very important.
>
> 73,
>
> Dan N4XWE
>

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