From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.gentoo.org (smtp.gentoo.org [134.68.220.30]) by robin.gentoo.org (8.13.3/8.13.3) with ESMTP id j2N7QKuH002461 for ; Wed, 23 Mar 2005 07:26:21 GMT Received: from main.gmane.org ([80.91.229.2] helo=ciao.gmane.org) by smtp.gentoo.org with esmtp (Exim 4.43) id 1DE0Fv-0008PX-Ja for gentoo-dev@robin.gentoo.org; Wed, 23 Mar 2005 07:26:19 +0000 Received: from list by ciao.gmane.org with local (Exim 4.43) id 1DE0DU-0006sy-Op for gentoo-dev@gentoo.org; Wed, 23 Mar 2005 08:23:51 +0100 Received: from hsdbyk206-163-248-19.sasknet.sk.ca ([206.163.248.19]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 23 Mar 2005 08:23:48 +0100 Received: from deemkay by hsdbyk206-163-248-19.sasknet.sk.ca with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 23 Mar 2005 08:23:48 +0100 X-Injected-Via-Gmane: http://gmane.org/ To: gentoo-dev@robin.gentoo.org From: Ryan Hill Subject: [gentoo-dev] Re: mmxext flag Date: Wed, 23 Mar 2005 07:23:43 +0000 (UTC) Message-ID: References: <1111393195.7919.50.camel@rift.ath.cx> <20050321211217.GA28215@phaenix.haell.com> <20050322111131.GA1180@phaenix.haell.com> Precedence: bulk List-Post: , , List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-dev@gentoo.org Reply-To: gentoo-dev@gentoo.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Complaints-To: usenet@sea.gmane.org X-Gmane-NNTP-Posting-Host: main.gmane.org User-Agent: Loom/3.14 (http://gmane.org/) X-Loom-IP: 206.163.248.19 (Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8b2) Gecko/20050319 Firefox/1.0+) Sender: news X-Gmane-MailScanner: Found to be clean X-Gmane-MailScanner: Found to be clean X-Gmane-MailScanner-SpamScore: sss X-MailScanner-From: lnx-gentoo-dev@m.gmane.org X-MailScanner-To: gentoo-dev@gentoo.org X-Archives-Salt: 153c74af-55a8-4bc3-a201-0a95d4d9e9e1 X-Archives-Hash: 7073fb33ddaf2215981378a97a640cb0 Drake Wyrm haell.com> writes: > > MMX2 is supported by Pentium 3 Katmai and Coppermine processors. > > MMXEXT is supported by Athlon processors. As far as I can tell > > they're two very different things. I'm confused. > > You, and a lot of other people. > > Also, I should correct my earlier statement. "MMX2" is _a_ marketing > name for the "Extensions to the MMX Instruction Set", which were > apparently introduced in the AMD-K6-2E+ and AMD-K6-IIIE+. You're right, > though; the Athlon was the first mainline processor with mmx(2|ext). > These extensions were subsequently adopted by Intel into the Pentium II > much in the same way AMD adopted Intel's original MultiMedia eXtensions. > > In my further research on the subject, it looks like Intel has been of > late bragging up it's whiz-bang new "Intel Wireless MMX2 Technology". > It's apparently an instruction set extension targeted at all-in-one > cell-phone-camera-music-player-PDA gadgets. As far as I can tell, it's > the only time Intel has used the term "MMX2". > > Therefore, I recommend the use of "mmxext" to refer to the original > multimedia extensions extensions, to avoid aggravating an > already-confusing situation. thanks, that makes things a little less murky. i see that back in 98-99, everyone was buzzing about the new KNI/MMX2 instruction set, but all references to it seem to have disappeared when it was released. the thing that confuses me most is that MPlayer insists i have MMX2 support. now that its flag has changed to mmxext i find it strange that to enable MMX2 support for an Intel chip, I have to enable support for an Athlon specific technology (at least that's the only references i could find indicate). but this is all semantics anyways. thanks for the prompt reply. -- gentoo-dev@gentoo.org mailing list