Re: Strange errors with Das16 driver with PC104-DAS16JR/16 and Geode CPU

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On Sunday 29 September 2002 04:32 pm, Peter Jensen wrote:

>
>  It looks like the driver or the hardware is losing buffers, and causing
> the data stream to become out of alignment.
>
>  Does anyone have any ideas as to what could cause this?  Things I have
> tried include:
>

As was pointed out recently, the jr versions of the das16 only have a single 
sample hardware fifo.  It is probably overruning while the driver has dma 
disabled.  Adding a second buffer should allow the driver to disable dma for 
a much shorter period of time (currently the dma is disabled until the driver 
has copied all the data out of the dma buffer), I'll try and make the changes 
later this evening.

- -- 
Frank

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Received on 2002-09-30Z21:57:17