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Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!munnari.OZ.AU!news.ecn.uoknor.edu!news.wildstar.net!cancer.vividnet.com!hunter.premier.net!news.mathworks.com!nntp.primenet.com!howland.erols.net!news1.erols.com!news From: Ken Bigelow <kbigelow@www.play-hookey.com> Newsgroups: comp.unix.bsd.freebsd.misc Subject: Re: FBSD and EISA machines Date: Thu, 26 Sep 1996 18:24:33 +0000 Organization: Erol's Internet Services Lines: 33 Message-ID: <324ACA61.1A8B@www.play-hookey.com> References: <324ac5e5.4422121@news.tiac.net> Reply-To: kbigelow@www.play-hookey.com NNTP-Posting-Host: kenjb05.play-hookey.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 3.0 (Win16; U) Margaret Tarbet wrote: > > I think that not-so-long-ago i started to read a discussion, or > maybe it was only a contention, that FBSD doesn't really take > advantage of EISA address space; that anything over 16Mb > is just as useless as under DOS. I wish i could go back and > finish reading it, but it seems to be gone from the list and it > is certainly gone from my (now-defunct) winnie. > > Can anyone (maybe from the hacker group) refresh my head > about this? It sounds fishy on the face of it, but if there's > anything to it, it'd be good to know since i favor Gang-of-Nine > machines. > I don't believe it. I am not up on the precise differences between EISA and ISA/VLB and ISA/PCI, etc. However, I'm running my site on an ISA/VLB motherboard with 36 MB RAM at this point, running a 486DX-50. I have other machines in my subnet running anywhere from 20MB to 36 MB, also on ISA/VLB motherboards. There is only one thing I've had to do: activate "bounce-buffers" for DMA, since most motherboard configurations won't allow DMA above 16 MB. All else runs fine this way. (Also note that the FreeBSD main site runs 512 MB. I very much doubt that only 16 MB is actually working! -- Ken Are you interested in | byte-sized education | http://www.play-hookey.com over the Internet? |