On Tuesday, 5. February 2002 16:57, Dr Andrew C Aitchison wrote:
> On Tue, 5 Feb 2002, Dag Bakke wrote:
> > This link:
> > http://www.linuxtv.org/download/dvd/margi_cs-0.6.0.tar.gz
> > which is a new version of the Margi/Billionton DVD-to-Go PC-Card
> > driver, contains a 34kB patch for the Neomagic xfree86 driver.
> >
> > >From  the README:
> >
> > --------
> > 1. Abstract
> >   This patch adds the following function to NeoMagic driver in
> >   XFree86-4.1.0. (NM2160 only)
> >
> >    - Overlay plane (Xv extension)
> >    - Show the video from ZV port
> >
> >   This codes are based on other drivers. (Siliconmotion, chips,
> > etc.)
>
> After disabling one test for the NM2160, this patch appears to
> provide the XVideo extension on my laptop which has a
>       Neomagic NM2230 MagicMedia 256AV+ rev 48 chip.
>
> XVideo appears not to be supported at 24bpp, but at 16bpp
> xvinfo indicates that I have 1 port, 2 visuals, 2 attributes, and a
> choice of 5 image formats.
>
> This suggests that this patch may work for several of the Neomagic
> chips.
>
> Anybody know what ZV is ?

Yes, ZoomedVideo, a protocol for PC-Cards which allows Video input to 
be transferred directly into the VGA frame buffer.

http://www.pc-card.com/papers/zv.htm
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