From alsa-devel-owner@alsa.jcu.cz  Sun Dec 20 12:01:54 1998
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Date: Sun, 20 Dec 1998 11:59:57 +0100 (CET)
From: Jaroslav Kysela <perex@jcu.cz>
To: Jerry Kaukko <jerry.kaukko@2.sbbs.se>
cc: alsa-devel@alsa.jcu.cz
Subject: Re: alsa - Crystal CS46xx and CS4280 info...
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On Sun, 20 Dec 1998, Jerry Kaukko wrote:

> Well, I guess it might be hard to find any good information about these
> chips.
> All these chips have a built-in SP (Stream Processor).. DSP stuff...
> And the soundcard drivers for Dos (FM and SB support) and windows 9x use
> .OSP files...
> I think I know the .osp fileformat pretty good now. But I'm sure it will be
> very hard to reverse engineer the
> instruction set of the DSP (SP). But that's not needed for a Linux driver.
> Just the .osp files and more information.  Most of the soundcards probably
> include a Audio Codec 97, so that won't be a problem
> either...
> 
> So, I would like to know if you know something more about this...
> Is it possible to get some info from Crystal...? I guess not...
> 
> Should I continue trying to find out how these .osp files work... And how to
> use them...?
> If I have got time for that, I probably will...
> 
> Reply from Crystal PC Support Group....

I think that Crystal's support doesn't understand what we need for driver
development. I suggest that we should create some WWW page which describes
Linux in few words with links to some common Linux pages and some news
(I like news http://www.news.com/News/Item/0,4,30027,00.html for example).

We must simple show to hardware vendors that if they will deny Linux
development that they lost some important part of computer market.

Also few notes that we cannot pay anything for information should be
good.

Can someone write this page? Please, I'm not good writer. We can repeat
ask to Cirrus support for more information if we explain all related
things..

							Jaroslav

> 
> Mark J Harvey@CRYSTAL
> 12/14/98 08:23 AM
> 
> 
> Jerry,
> 
> Cirrus Logic produces the controller chips that are used on
> add-in boards and motherboards made by retail manufacturers.
> These manufacturers customize the hardware and software to meet
> their own needs. Primary user support should come from the manufacturer.
> 
> The software you inquired about is offered only to OEMs due to licensing
> and
> other requirements.
> 
> If you purchased an Intel motherboard that uses a Crystal chipset, and
> need driver or installation help, call Intel Tech Support at
> 1-800-628-8686.
> 
> We cannot answer board-related questions regarding memory upgrades,
> jumper settings, or installation of the software drivers shipped
> with your product.
> 
> If you are not sure who the manufacture of your sound card is,
> you can go to the following web site to trace the FCC number:
> http://www.fcc.gov/fcc-bin/ead
> 
> Thank You,
> Mark
> PC Support Group
> 
> 
> "Jerry Kaukko" <jerry.kaukko@2.sbbs.se> on 12/10/98 04:03:17 PM
> 
> Please respond to "Jerry Kaukko" <jerry.kaukko@2.sbbs.se>
> 
> To:   pc-support@cirrus.com
> cc:    (bcc: pcaudio)
> Subject:  OEM: nope... But I still need some more information....
> 
> I have a soundcard produced by Joytech Computer Corporation
> "http://www.joytech.com/ " (Twister 3D)
> with CS4280 and CS4297. I don't think it is possible to write a software
> driver, with just the information in the two databooks for these chips. So
> I
> would like to have some more information about these chips. Or maybe just
> the CS4280 host interface, because the AC-Link protocol is explained in
> 4297.pdf. Well, I might be wrong about this...
> 
> From:
> http://www.cirrus.com/oem_support/
> >The information provided on this page is for original equipment
> >manufacturers and independent software vendors only. If you are a
> >product user and seek support, please refer to Drivers.
> 
> >Engineering Applications Support
> 
> >To contact an in-house applications and technical support group, please
> >send an email with your name, company, phone number, and question
> >to the appropriate email link below.You will be contacted via either reply
> >email or phone, based on the nature of your question.
> 
> from 4280.pdf - "CrystalClearTM PCI Audio Interface"
> >After powerup, the host can read or write from/to the EEPROM device by
> accessing
> >specific registers in the CS4280. Cirrus Logic provides software to read
> and write the EEPROM.
> How does Cirrus Logic provide this software? I wasn't able to find it. Is
> it only provided to OEM/ISV's?.
> 
> 

-----
Jaroslav Kysela <perex@jcu.cz>
Academic Computer Centre, University of South Bohemia
Branisovska 31, C. Budejovice, CZ-370 05 Czech Republic


