[linux-dvb] Re: Full featured card summary

[Andrew de Quincey <adq_dvb@lidskialf.net>]

On Saturday 20 March 2004 19:29, Helmut Auer wrote:
> Andrew de Quincey wrote:
> >>>Cool. The Root/Dpram in your 2003-11-08 DVB snapshot is the same as the
> >>>ones I extracted from dvb-ttpci-01.fw.gz currently on the website. So
> >>> its definitely not that; I just wanted to make ABSOLUTELY sure it
> >>> wasn't some build issue. I'm assuming your 2003-11-08 snapshot works
> >>> for your DISEQC BTW.
> >>
> >>Yes, it does.
> >
> >Another difference (though I don't see how it can affect DISEQC, but you
> > never know!):
> >
> >In 1.0.0 and your 2003-11-08 snapsnot, hw_sections = 0 by default
> >
> >In 1.1.0 and CVS, hw_sections = 1 by default
>
> Hi Andrew,
> I only tested for about 10 minutes now with switching hw_sections from 0
> to 1 and vice versa.
> It looks like diseqc is much better with hw_sections=0 !
> Anyway once or twice it took a very long time to switch, what I never
> have with version 1.0.0.
> But as I said it looks good, maybe I have to check different diseqc
> settings.

Wow COOL!

> Now I have some questions:
> Why does hw_sections=1 change ( or kill ) diseqc behaviour ?

No idea, looking at the source, it only does anything when you're setting up 
TS section filters (DMX_TYPE_SEC). Someone with access to the firmware source 
will have to explain this.

> What's the reason that the default for this parm has been changed ?

Again, no idea; it says in a comment:
" *  crc32 is not implemented in the av7110 firmware, section filter checksum
 *  checks work  for hw_sections=0!"

As its using the same firmware version, I doubt CRC32 magically works in the 
>=1.1.0 dvb-kernel drivers :)

> and a totally different question:
> Is there any possibilty to speed up the loading of dvb-ttpci module.
> It takes about 5 to 10 seconds to load on my system.

Can't help you with that :(


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