TUHS June 2006

tuhs@tuhs.org

41 participants
30 discussions

by norman＠nose.cita.utoronto.ca

I've assembled some notes from old manuals and other sources on the formats used for on-disk file systems through the Seventh Edition: http://www.cita.utoronto.ca/~norman/old-unix/old-fs.html Additional notes, comments on style, and whatnot are welcome. (It may be sensible to send anything in the last two categories directly to me, rather than to the whole list.)

2 years, 7 months

Re: [pups] bitsavers document

by Milo Velimirovic

> Message: 1 > Date: Wed, 14 Jun 2006 16:24:29 -0700 (PDT) > From: Martin Lovick <martin_lovick(a)yahoo.com> > Subject: [pups] bitsavers document > To: pups(a)minnie.tuhs.org > Message-ID: <20060614232429.78414.qmail(a)web36905.mail.mud.yahoo.com> > Content-Type: text/plain; charset=iso-8859-1 > > whilst looking around the bitsavers.org pdf archive, I > found a document called > PreliminaryUnixImplementationDocument_Jun72.pdf. > Having had a quick scan through, it contains a source > code listing and some commentary (lions i hear you > say). No, not Lions. The author is listed on the first page as one T. R. Bashkow. > The strange thing is that all of the source code > appears to be in assembler... yup. This would be an early pdp11 UNIX from the period before the rewrite in C. > > whats this about? It appears to be a listing of an assembly language version of an early UNIX kernel for the pdp11 in the pages labelled E*-*; the pages F*-* are a commentary; G*-* is a glossary of terms used; H*-* contains a description of each function in the kernel with complete details of each function. > > is it a comentary of PDP-7 unix? It's (Bell Labs flavor) pdp11 assembly language. > > regards > > Martin -- Milo Velimirović <milov(a)uwlax.edu> Unix Computer Network Administrator 608-785-6618 Office ITS Network Services 608-386-2817 Cell University of Wisconsin - La Crosse La Crosse, Wisconsin 54601 USA 43 48 48 N 91 13 53 W -- Unix: Where /etc/init is job #1.

18 years, 4 months

Re: [TUHS] weird problem with our Decwriter III terminal

by John Chung

I would start with the gears first. Stepper motor testing can be done by visual inpection by running through 1 character at a time. Mark each turn when moving to the next character. This requires diassembly of the casing and other visual blocking components. John --- tuhs-request(a)minnie.tuhs.org wrote: > Send TUHS mailing list submissions to > tuhs(a)minnie.tuhs.org > > To subscribe or unsubscribe via the World Wide Web, > visit > https://minnie.tuhs.org/mailman/listinfo/tuhs > or, via email, send a message with subject or body > 'help' to > tuhs-request(a)minnie.tuhs.org > > You can reach the person managing the list at > tuhs-owner(a)minnie.tuhs.org > > When replying, please edit your Subject line so it > is more specific > than "Re: Contents of TUHS digest..." > > > Today's Topics: > > 1. weird problem with our Decwriter III terminal > ... (asbesto) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Wed, 21 Jun 2006 09:38:10 +0000 > From: asbesto <asbesto(a)freaknet.org> > Subject: [TUHS] weird problem with our Decwriter III > terminal ... > To: tuhs(a)tuhs.org > Message-ID: <20060621093810.GA24010(a)freaknet.org> > Content-Type: text/plain; charset=us-ascii > > > Hi, > > maybe someone here can help us - our problem is that > the > decwriter terminal seem to "jump" in particular > positions > when printing > > we don't understand how to solve this problem - > maybe this is a > stepper motor problem, or another problem in > gears/transmission? > > the problem is evident in this image: > > http://dyne.org/museum/dec/terminals/la120/tn/dscn3488.jpg.html > > does someone have an idea about this problem? > tnx! > > :) > > -- > [ asbesto : IW9HGS : freaknet medialab : > radiocybernet : poetry ] > [ http://freaknet.org/asbesto > http://papuasia.org/radiocybernet ] > [ NON SCRIVERMI USANDO LETTERE ACCENTATE, NON > MANDARMI ALLEGATI ] > [ *I DELETE* EMAIL > 100K, ATTACHMENTS, HTML, > M$-WORD DOC, SPAM ] > > > > ------------------------------ > > _______________________________________________ > TUHS mailing list > TUHS(a)minnie.tuhs.org > https://minnie.tuhs.org/mailman/listinfo/tuhs > > > End of TUHS Digest, Vol 32, Issue 15 > ************************************ > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

18 years, 6 months

weird problem with our Decwriter III terminal ...

by asbesto

Hi, maybe someone here can help us - our problem is that the decwriter terminal seem to "jump" in particular positions when printing we don't understand how to solve this problem - maybe this is a stepper motor problem, or another problem in gears/transmission? the problem is evident in this image: http://dyne.org/museum/dec/terminals/la120/tn/dscn3488.jpg.html does someone have an idea about this problem? tnx! :) -- [ asbesto : IW9HGS : freaknet medialab : radiocybernet : poetry ] [ http://freaknet.org/asbesto http://papuasia.org/radiocybernet ] [ NON SCRIVERMI USANDO LETTERE ACCENTATE, NON MANDARMI ALLEGATI ] [ *I DELETE* EMAIL > 100K, ATTACHMENTS, HTML, M$-WORD DOC, SPAM ]

18 years, 6 months

[pups] Major/minor device numbers and device names for MSCP drives?

by Robert Armstrong

Probably this is documented somewhere, but I really need a pointer or a brief tutorial on the major/minor device numbers for mknod() and the device names for MSCP drives in 2.11bsd. If I have a really simple PDP with an RQDXn and one RDxx disk, then the device name is conventionally /dev/ra0x and the first partition, ra0a is (5,0), the second, ra0b, is (5,1), etc. Pretty easy. If I have two drives on my single RQDXn, then the second hard disk is /dev/ra1 and ra1a is (5,8), ra1b is (5,9), etc. I guess the offset of 8 must be the maximum number of partitions on a drive - OK, I'm still with you. But what if I have a second MSCP controller? Assuming that I've built the kernel to handle it and modified dtab to autoconfigure it, that is. What are the usual names and mknod() numbers for the drives on the second controller? Worse, what if the MSCP controller isn't a RQDX but is a real UDA/QDA ? Now the drives have their own MSCP unit numbers that can be anything from 0 to 250 - where does this figure in? Same question for TMSCP - what if I have more than one tape controller? This case is easier, though, since TMSCP controllers normally have only one drive associated with them. Thanks, Bob Armstrong

18 years, 6 months

Re: [TUHS] TUHS Digest, Vol 32, Issue 10

by lm＠bitmover.com

> The bandwidth of a mouse and menus is not very high. The bandwidth of a > keyboard is a lot higher. I've long thought that what we needed was control panel which operated on revision controlled flat files in /etc. So you could write scripts to do the automated stuff but you could point and click to do the stuff that you forgot how to do. -- --- Larry McVoy lm at bitmover.com http://www.bitkeeper.com

18 years, 6 months

[pups] bitsavers document

by Martin Lovick

whilst looking around the bitsavers.org pdf archive, I found a document called PreliminaryUnixImplementationDocument_Jun72.pdf. Having had a quick scan through, it contains a source code listing and some commentary (lions i hear you say). The strange thing is that all of the source code appears to be in assembler... whats this about? is it a comentary of PDP-7 unix? regards Martin __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

18 years, 6 months

[pups] bitsavers document

by Carl Lowenstein

On 6/15/06, Greg 'groggy' Lehey <grog(a)lemis.com> wrote: > On Wednesday, 14 June 2006 at 16:24:29 -0700, Martin Lovick wrote: > > whilst looking around the bitsavers.org pdf archive, I found a > > document called PreliminaryUnixImplementationDocument_Jun72.pdf. > > Can you give a full URL for this document? I've taken a brief look at > the list in http://bitsavers.org/pdf/, but nothing jumped out at me. < http://bitsavers.org/pdf/bellLabs/unix/PreliminaryUnixImplementationDocumen… > carl -- carl lowenstein marine physical lab u.c. san diego clowenst(a)ucsd.edu

18 years, 6 months

Re: [pups] bitsavers document

by dmr＠plan9.bell-labs.com

Martin Lovick remarked, > whilst looking around the bitsavers.org pdf archive, I > found a document called > PreliminaryUnixImplementationDocument_Jun72.pdf. > Having had a quick scan through, it contains a source > code listing and some commentary (lions i hear you > say). The strange thing is that all of the source code > appears to be in assembler... > whats this about? > is it a comentary of PDP-7 unix? It is a fairly early version, with commentary, of PDP-11 Unix (the kernel), indeed still in assembler. It is an interesting find, probably the earliest version yet unearthed. Kossow told me about it when he did (or got) the scan of the document. I can't remember receiving it at the time. It is clearly different from what we in the research group were running at the time--it has devices we didn't have, and I think by then we were on the 11/45. Dennis

18 years, 6 months

NY Times article on Bell Labs Holmdel closure

by Jerry Peek

This is a long New York Times article with a lot of detail. They say there'll be at least one public open house before it's demolished. I think you can now read a limited number of NY Times articles without subscribing (they seem to count how many you read -- maybe with a cookie). Here's the URL: http://www.nytimes.com/2006/06/14/realestate/commercial/14bell.html Jerry -- Jerry Peek, jpeek(a)jpeek.com, http://www.jpeek.com/

18 years, 6 months

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TUHS June 2006