Re: PDP 11/34 Information

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Article #4007

#4007

From: Richard Bowles
Date: Tue, 28 May 1991 21:14

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hal@world.std.com (Harry A Levinson) writes:

>In article <SPA.91May24170642@alfa.fct.unl.pt> spa@fct.unl.pt (Salvador Pinto Abreu) writes:
>>
>>1Meg??? Are you sure it's an 11/34? I once ran such a beast (actually
>>an 11/34a) and as far as I remember, having an 18-bit UNIBUS, it would
>>only address 256Kb.
>>

>I believe ABLE or some other company once made an MMU/memory upgrade for
>the PDP 11/34 that allowed it to go beyond the 256Kb limit.

Yes, ABLE did make such a beast -- I believe they sold their
older product line to a spin off, though.  By the way, if the
machine in question has the ABLE board, O/S patches were required
to make it work (RSX or RSTS if my memory is correct)


>harry levinson
>hal@world.std.com

Richard Bowles  (former ABLE employee -- but a long time ago)
bowles@stsci.edu

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<4362@meaddata.meaddata.com> <bqt.674958483@cia.docs.uu.se> <SPA.91May24170642@alfa.fct.unl.pt> <1991May28.031247.20059@world.std.com>

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!asuvax!noao!stsci!bowles
From: bowles@stsci.EDU (Richard Bowles)
Newsgroups: comp.sys.dec
Subject: Re: PDP 11/34 Information
Message-ID: <bowles.675465269@ghost.stsci.edu>
Date: 28 May 91 21:14:29 GMT
References: <4362@meaddata.meaddata.com> <bqt.674958483@cia.docs.uu.se> <SPA.91May24170642@alfa.fct.unl.pt> <1991May28.031247.20059@world.std.com>
Organization: Space Telescope Science Institute, Baltimore, MD 21218
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