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- Newsgroups: vmsnet.pdp-11
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!rpi!usenet.coe.montana.edu!news.u.washington.edu!glia!wwonko
- From: wwonko@glia.biostr.washington.edu ()
- Subject: PDP-11/34 need UNIX (summary)
- Message-ID: <1992Sep10.205956.11576@u.washington.edu>
- Summary: summary of responses to reqiest for info.
- Keywords: UNIX PDP
- Sender: wwonko@glia.biostr.washington.edu
- Organization: Dept Biological Structure-University of Washington
- Date: Thu, 10 Sep 1992 20:59:56 GMT
- Lines: 79
-
- I requested information regarding running UNIX or BSD's Unix on a
- PDP 11/34. The response was not what I had expected.
-
- Several people sent responses; all of them were helpful, and I want
- to thank all the people who sent mail. Most said that 2.9BSD MIGHT
- do it, but it's hard to find and you need an AT&T source liscence.
- One message had several people mentioning a "Steven M. Schultz", and
- he sent a response that is concise and complete, so I'll post it here:
-
- >From: sms@WLV.IIPO.GTEGSC.COM (Steven M. Schultz)
- >Message-Id: <9209020609.AA02500@WLV.IIPO.GTEGSC.COM>
- >To: wwonko@glia.biostr.washington.edu
- >Subject: Re: PDP-11/34 needs UNIX
- >
- >Hello,
- >
- >> We reecently got a PDP 11/34. We now have it all up and running; however,
- >
- > My condolences ;-)
- >
- > A 11/44 would be _so_ much nicer (not to mention faster), and they
- > are pretty cheap (although not free, as i've heard the 34 is) these
- > days.
- >
- >> our OS is RSX 11M, and it's pretty lame. We'd like a UNIX for it - so we
- >
- > Yes, 11M is pretty lame - it has some nice features (11D or IAS
- > are a bit better, but still pretty "dead" feeling once a person
- > has worked on a Unix system).
- >
- > Bad news i'm afraid on the Unix front. The 34 doesn't have split
- > I/D or supervisor mode. THe last Unix(s) reported as being capable
- > of running on such a system was V7 and 2.9BSD (although i never
- > personally witnessed 2BSD running on a non split I/D machine, even
- > V7 required kernel overlays to fit for a non-trivial system). THe
- > other "bad news" is that the 34 only supports 248kb of physical
- > memory - a typical (well, for me anyways) 2.11BSD system takes
- > around 300kb to load (IP/TCP networking, disc quotas, etc).
- >
- > There _is_ Unix available (being distributed by the USENIX Association)
- > for the PDP-11, but 2.11BSD requires split I/D (too many programs
- > have grown over time, even the 'csh' is overlaid now) and supervisor
- > mode (the networking code - full 4.3BSD TCP/IP - runs in supervisor).
- > Reasonable cost of $200 assuming a Unix source license is handy.
- >
- > DEC dropped Ultrix-11 years ago, so 2.11BSD is the _only currently
- > distributed/maintained_ Unix around for the 11, and i've been too
- > busy to even try and squeeze it back into a non split I/D machine
- > (not to mention the 11/73 has split I/D and it's hard to turn it
- > off - especially on a development machine ;-)).
- >
- >> can have mail and news, reeally, but anything that could do those two
- >> things would be better than this.
- >
- > About all i can suggest is replacing the 34 with either a 44 (real
- > cheap - almost scrap cost) or a 73 (fairly expensive, the KDJ-11
- > Q-bus systems have really held their value - i paid almost $5400
- > for mine). Or, the 11/24 can be upgraded by a card (expensive)
- > from QED (outfit in Mass.).
- >
- > Or try to find a old copy of 2.9BSD - it's out of print though.
- >
- >> We have RK05J drives, and two 80MB DD11/80's. Is there a UNIX for this
- >> machine? (BSD?) Or is it a waste of our time to try? Any help would
- >
- > Well, some "good news" might be in order (but it definitely won't
- > ameliorate the earlier bad news) - there is a driver for the RK05
- > in 2.11BSD. Not knowing what type of controller is handling the
- > 80mb drives i can't guess if support is present for them.
- >
- > Steven M. Schultz
- > sms@wlv.iipo.gtegsc.com
-
- So, the 11/34 is basically stuck. One person (S. Scott Patterson)
- suggested: "You've got a front panel, hack away", and that's
- probably what we'll do.
-
- Thanks for the responses!
-
-