Date: Wed, 18 Jun 2003 17:00:10 +0200 From: Gerrit =?iso-8859-1?Q?K=FChn?= <gerrit@pmp.uni-hannover.de> To: Damian Gerow <damian@sentex.net> Cc: current@freebsd.org Subject: Re: VIA C3 Message-ID: <20030618150010.GH68252@pmp.uni-hannover.de> In-Reply-To: <20030618144417.GD739@sentex.net> References: <20030614013356.1388.qmail@web13503.mail.yahoo.com> <mailman.1055688120.18605.fcurrent-l@lists.sentex.ca> <20030618144417.GD739@sentex.net>
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On Wed, Jun 18, 2003 at 10:44:17AM -0400, Damian Gerow wrote: > I have an Ezra or an Ezra-T core (the only difference is Tualatin <sp> > compatibility), and it produces an Unknown. > If you have a 'Samuel2' core, then you have a Samuel2 core. It's neither > Ezra nor Ezra-T -- those two are the successors to Samuel2. Well, all I can say is, that I bought it as "Ezra" and there is "Ezra" printed on it. FreeBSD identifies it as Samuel2, though. > > However, if you have a C3 without SSE, it's basically a K6 with MMX > > and 3dNow. So I'm using "CPUTYPE=k6-3" in /etc/make.conf. Up to now > > this has been working fine for me. > I've been using CPUTYPE=i586/mmx. That's been working for me as well -- I'd > be interested to see which is more optimized. I don't know. But I think there are only rare cases where you will notice differences. > Does your chip understand CMOV? GCC presumes that a 686-class processor has > CMOV, and while the C3 /is/ a 686-class processor, it doesn't do CMOV. But > I heard a rumor that the Samuel2 core /does/ do CMOV... I guess it doesn't understand CMOV. I can remember trying i686 first and having problems with several applications then... afair /usr/ports/editors/joe was among them (crashed when starting). I had already heard about that CMOV thing then and blamed the crashes on the i686-setting. Since I moved to k6-3, everything is just fine. cu Gerrit --
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