Date: Wed, 16 Jul 1997 17:39:23 -0600 From: Steve Passe <smp@csn.net> To: ade@demon.net Cc: Chuck Robey <chuckr@Glue.umd.edu>, smp@FreeBSD.ORG Subject: Re: HEADS UP: EISA cards. Message-ID: <199707162339.RAA10636@Ilsa.StevesCafe.com> In-Reply-To: Your message of "Wed, 16 Jul 1997 23:48:18 BST." <E0wocrq-0000Tw-00@genghis.eng.demon.net>
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Hi, > >boards out there would be getting a little aged, and it seems fairly safe > >to exclude them from smp work. > > Bzzzt. Wrong. > > Micronics do dual (and quad) Pentium/PPro motherboards, which are > PCI/(E)ISA configured. > > Indeed, my personal SMP experimentation machine (though not my 'real' > SMP machines) have 3COM EISA cards in them for management interfaces > (the 'real' work going out through PCI cards). > > Fortunately, the 3c579 Vortex is bus-mastering, so would appear to be > unaffected by the suggested changes here (please correct me if > I'm wrong here -- when it comes to hardware, I'm more of a > Sun (so sue me :) person than PC). > > However, the point remains that until somebody figures out a totally > PCI-based motherboard (7-8 PCI slots), we *cannot* afford to completely > blow away EISA support, as you would seem to suggest. again, I'm NOT eliminating EISA hardware, just NON bus-mastering EISA cards that do DMA via the chipset DMA registers. So far no one has reported using such beasts... -- Steve Passe | powered by smp@csn.net | Symmetric MultiProcessor FreeBSD
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