From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932258AbWAUA4B (ORCPT ); Fri, 20 Jan 2006 19:56:01 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932273AbWAUA4B (ORCPT ); Fri, 20 Jan 2006 19:56:01 -0500 Received: from rrcs-24-73-230-86.se.biz.rr.com ([24.73.230.86]:16781 "EHLO shaft.shaftnet.org") by vger.kernel.org with ESMTP id S932258AbWAUA4A (ORCPT ); Fri, 20 Jan 2006 19:56:00 -0500 Date: Fri, 20 Jan 2006 19:55:25 -0500 From: Stuffed Crust To: Brent Cook Cc: Rene Herman , linux-kernel@vger.kernel.org, alsa-devel@alsa-project.org Subject: Re: [Alsa-devel] Re: RFC: OSS driver removal, a slightly different approach Message-ID: <20060121005525.GA29562@shaftnet.org> Mail-Followup-To: Brent Cook , Rene Herman , linux-kernel@vger.kernel.org, alsa-devel@alsa-project.org References: <20060119174600.GT19398@stusta.de> <43D05D0C.1030900@keyaccess.nl> <0D5E76A0-FA1B-4CCC-BFA6-D84FBA1EE39D@yahoo.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="YiEDa0DAkWCtVeE4" Content-Disposition: inline In-Reply-To: <0D5E76A0-FA1B-4CCC-BFA6-D84FBA1EE39D@yahoo.com> User-Agent: Mutt/1.4.2.1i X-Greylist: Sender is SPF-compliant, not delayed by milter-greylist-2.0.2 (shaft.shaftnet.org [127.0.0.1]); Fri, 20 Jan 2006 19:55:26 -0500 (EST) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --YiEDa0DAkWCtVeE4 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Jan 20, 2006 at 01:04:30AM -0600, Brent Cook wrote: > The Adlib card that I had was just an OPL-2 synthesizer, no PCM =20 > support at all. Normally, it was mono, 9 voices, 2 FM operators per =20 > voice + 3 noise channels, but there was a mode that supported 4 =20 > operators and reduced the number of voices to 4 or 5. > An OPL-3 is just 2 OPL-2's, one for each stereo channel. I think that =20 > any card with an OPL-3 (SB-16) can act like an OPL-2. The OPL2 is a 2-operator mono synth, While the OPL3 can operate in a mode that makes it appear as two OPL2s (stereo, yay!) it has a native 4-operator mode that halves the number of resultant voices, but allows much more complex instruments, as well as crude native stereo=20 capabilities. (In the end, to do proper stereo panning you had to use=20 two voices and vary the volumes directly) Meanwhile. The original Adlib did indeed use an OPL2, and since the original Sound Blaster was little more than an adlib with PCM bolted on, so did the first few Sound Blaster cards (newer ones also dropped the CMS AM synth chip, first by making them socketed and optional, later by eliminating the capability altogether) The Sound Blaster Pro upped the ante to include a mixer, stereo PCM and two OPL2s, one for each channel.=20 Creative Labs quickly revised the SBPro to include a single OPL3 instead, and that's also what went into the SB16 and its ilk (Vibra16, AWE32, SB32, AWE64, with and without the CSP chip). They dropped the FM synthesis capability entirely when they went to PCI cards. But I digress. - Solomon [I think I've used every card Creative put out in the ISA days] --=20 Solomon Peachy ICQ: 1318344 Melbourne, FL =20 Quidquid latine dictum sit, altum viditur. --YiEDa0DAkWCtVeE4 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) iD8DBQFD0YZ9PuLgii2759ARAkg9AKDmDCmbkOw+vxGi4qucKOvEu7fgPgCgxgmJ Le3PWrHT9VSTuTPqkPd9TQ8= =eGSd -----END PGP SIGNATURE----- --YiEDa0DAkWCtVeE4--