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Newsgroups: comp.bugs.2bsd Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!newshost.telstra.net!asstdc.scgt.oz.au!metro!metro!news.cs.su.oz.au!inferno.mpx.com.au!news.unimelb.EDU.AU!munnari.OZ.AU!news.ecn.uoknor.edu!news.cis.okstate.edu!newsfeed.ksu.ksu.edu!news.physics.uiowa.edu!math.ohio-state.edu!howland.reston.ans.net!newsfeed.internetmci.com!salliemae!europa.chnt.gtegsc.com!wlbr!sms From: sms@wlv.iipo.gtegsc.com (Steven M. Schultz) Subject: Re: Does 2BSD support NFS/NIS? Sender: news@wlbr.iipo.gtegsc.com (System Administrator) Organization: GTE Government Systems, Thousand Oaks CA USA Message-ID: <DovwH5.A3K@wlbr.iipo.gtegsc.com> References: <4j1l4k$su5@umbra.unr.edu> X-Nntp-Posting-Host: wlv.iipo.gtegsc.com Date: Tue, 26 Mar 1996 16:58:16 GMT Lines: 48 In article <4j1l4k$su5@umbra.unr.edu>, Louis N. Beleos <beleos@news.unr.edu> wrote: >Can NFS/NIS be added to 2.10BSD running on a PDP-11/84? Not 2.10.1 or 2.11? Wow. The initial release of 2.10 did break a lot of new ground (for a pdp-11 port) but was less than capable in some areas. With 2.10.1 the networking code moved out to super- visor mode and stability/useability increased greatly. 2.11 added long filenames and a bunch of other neat/nice stuff. >I hope that this question is appropriate. I'm a Unix/BSD newbie and have It's appropriate. I'd have chimed in sooner but I was busy trying to squish another 1.9kb of Data space out of some utilities. Yep - "kb", not MB. The last time the question was asked it became apparent that the asker had no idea what a PDP-11 was. It is not a 64 bit machine, it's not a 32 bit machine and it's not even a 16 bit machine with 32 bit addressing. It's a 16 bit machine with a (quasi) 17 bit addressing capability (on the more capable models such as the /84). The maximum _physical_ memory which can be placed on a PDP11 is 4MB. Most systems have less, with 1mb and 2mb configurations being quite common. It took a *lot* of work and jumping up and down on the suitcase (after overstuffing it of course) just to fit 4.3BSD and the networking code into a 16 bit machine. At the time 4BSD did not have NFS. Adding NFS to 4BSD essentially doubled the size of the kernel. Doubling the size of the system on a PDP11 would not be a pretty picture at all. A moderately large kernel (plus associated caches and networking) can weigh in at ~480kb. Double that and guess what happened to 1mb of memory? >been unable to locate an archive site or FAQ for this group. There's a couple FTP sites that keep the patches/updates for 2.11BSD but until recently everyone (automagically) "knew" what comp.bugs.2bsd was all about. Might be a good idea for me (or someone) to sit down and write a FAQ. Just have to get congress to pass a law adding an extra 8 hours into each day so the amount of 'copious free time' would go up :-) Steven Schultz sms@wlv.iipo.gtegsc.com sms@moe.2bsd.com