From alsa-devel-owner@alsa.jcu.cz  Thu Nov 12 13:59:36 1998
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Date: Thu, 12 Nov 1998 13:56:49 +0100 (CET)
From: Winfried Ritsch <ritsch@iem.mhsg.ac.at>
To: alsa-devel@jcu.cz
Cc: Andrew Clausen <clausen@alphalink.com.au>
Subject: Re: Event Layle / Multitrack driver
In-Reply-To: <Pine.LNX.3.96.981111092948.5573C-100000@soma.interzone.org>
References: <36491BC6.E12FDFFA@alphalink.com.au>
	<Pine.LNX.3.96.981111092948.5573C-100000@soma.interzone.org>
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Reply-To: alsa-devel@alsa.jcu.cz
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meme writes:
 > On Wed, 11 Nov 1998, Andrew Clausen wrote:
 > > meme wrote:
 > > > I'm very interested in writing a driver for the Event Electronics Layla
 > > I'm drooling already.  How much do they cost?
 > 
 > I believe you can pick one up for $799 or so street price.
 > 
 > > 
 > > >From look at the API, it should be possible with ALSA.  (non-authoritative
 > > opinion)
 > > 
 > > What do you mean by DSPs?  AFAIK, ALSA only supports PCM - I don't know that
 > > you could do effects processing or the like through ALSA.  It would be
 > > difficult to provide device abstraction...
 > 
 > 
 > Well, that would not be good then.  Ideally if you can get the DSP's to do
 > the work, the chance of real-time effects is much greater.  For example,
 > Ensoniq has 6 DSP's on their PARIS EDS 1000 card.  The Layla has some
 > sembelance of on board processing as well.  Maybe what we need is the
 > OpenGL of sound, an effects/processing abstraction layer. Woohoo, this is
 > getting silly.

Some info:

Layla/Darla and Gina are borads based on the DSP56301, which has a
PCI-Bus Controller on board and uses SSI Interface to DA/AD:

Event Electronic is selling this but it was developped by a company
called Echo which is very close to Mototrolla and the baord is quit
similar to the Evalution board. But there are not giving any
information out (also not for 4front).

But, there is a JTAG Interface on Board which can be connected to the
Evaluation Board and you can just read out dissassamble the Programm
(which is booted from EEProm) with the debbuging tools running under
wine.

A similiar project (hardware) but only for research reasons is

http://iem.mhsg.ac.at/maas

which discusses all aspect of these (with Layout to build your
personell one).

There is a need of DSP knowlegde to develop the driver which can do
also realtime processing in RAM .... and so on.

good luck

mfg winfried

