[Gllug] Writing drivers

[Jonathan Dye]

> -----Original Message-----
> From: Vincent AE Scott [mailto:gllug at codex.net]
> Sent: 23 May 2002 19:25
> To: gllug at linux.co.uk
> Subject: Re: [Gllug] Writing drivers
> 
> 
> Jonathan Dye(jonathan.dye at automationpartnership.com)@Wed, May 
> 22, 2002 at 01:11:48PM +0100:
> > Hi,
> > 
> > A friend has asked me to look at writing a driver for a 
> custom piece of
> > hardware that he has built (MPEG-1 encoder board via 
> parallel port).  I've
> > had a look around the kernel and I own a copy of 
> "Understanding the Linux
> > kernel" which I've read and understood.  I know how his 
> hardware works but
> > not much about the parallel port drivers/software 
> architecture under linux.
> > Anyone got any tips on where to start with this stuff.
> 
> i'm just curious, are you saying it operates over the parallel port?
> doesnt that have sever bandwidth restrictions for 
> communicating with an
> mpeg encoder board?

Not really sure how well it performs but the encoder chip has a built in
SPP, EPP, ECP interface so it was designed to be able to talk over the
parallel port.
The stream is MPEG1 encoded so I don't think the bandwidth is too hurrendous
but I haven't looked too hard at the datasheet yet (my friend designed it
and I'm just the muppet who agreed to write the driver).

JD

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