Date: Wed, 19 Mar 1997 09:28:10 +0200 (EET) From: Narvi <narvi@haldjas.folklore.ee> To: Steve Passe <smp@csn.net> Cc: Gary Clark II <gclarkii@main.gbdata.com>, freebsd-smp@FreeBSD.ORG Subject: Re: AMD K5 Pentium Equivalents Message-ID: <Pine.BSF.3.95.970319092347.8486A-100000@haldjas.folklore.ee> In-Reply-To: <199703181752.KAA16020@Ilsa.StevesCafe.com>
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On Tue, 18 Mar 1997, Steve Passe wrote: > Hi, > > > On Fri, 14 Mar 1997, Gary Clark II wrote: > > > > > Steven P. Donegan wrote: > > [snip] > > > > > > You can run only Intel chips in FreeBSD SMP due to the fact that the others > > > (Cyrix and AMD) use a different standard for PIC usage. > > > (Please correct if I'm wrong on this) > > > > > > > This is a bit late reply, but still: > > > > Could FreeBSD be made to run AMD chips in SMP mode? That is - are the SMP > > motherboards capable of running the AMD (and Cyrix chips) in SMP, and the > > only thing on the way is the software? Or are different SMP motherboards > > required? > > no, can't be done. its a hardware issue, specifically the amd/cyrix chips > don't have APICs (advanced programmable interrupt controller) on them. > > amd/cyrix were developing their own hardware standard for this called > Open APIC, but it has withered on the vine... > intel patents the hell out of the APIC arch. so its very unlikely > that the APIC functionality will be cloned by anyone. Well, AMD has it's own chipset out now, starting to ship in the second quater - I'll take a look whetever there is anything about OpenPIC available... Sander > > -- > Steve Passe | powered by > smp@csn.net | Symmetric MultiProcessor FreeBSD > >
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