TUHS September 2020

tuhs@tuhs.org

60 participants
63 discussions

by Warner Losh

Greetings, What's the canonical source for patches to 2.9BSD and 2.11BSD? I see we have 2.11BSD patch 469 dated last month in the archive. Where does it come from? Has anybody climbed the hill to import all the patches into a git repo? I've found some mirrors, but moe.2bsd.org has been down for me for ages... How does Warren keep things up to date? I also have a (maybe faulty) memory of a similar series of patches to 2.9BSD because it was the last BSD to support non-split I&D space machines. yet a quick google search turns up nothing other than a set of patches dated August 1985 (also in our archive) and some changes for variants of hardware (pro, mscp). Is that it? Warner

1 year, 7 months

Old UNIX file system formats

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, 6 months

H.J. Lu Bootable Root & Base System disks

by Grant Taylor

Is it okay for me to ask a question about Linux that's from '91~'92? Does anyone happen to have copies of H.J. Lu's Bootable Root and the associated Linux Base System disk images from the early '90s? I've managed to find a copy of 0.98.pl5-31 bootable root disk. But I can't find any base disks to go along with it. The files used to be on tsx-11.mit.edu:/pub/linux/GCC in rootdisk and basedisk subdirectories. Unfortunately all of the mirrors I'm finding of tsx-11 are newer, have the basedisk directories, but no image files there in. -- Grant. . . . unix || die

3 years, 5 months

Status of Net/2

by Warner Losh

What's the current status of net/2? I ask because I have a FreeBSD 1.1.5.1 CVS repo that I'd like to make available. Some of the files in it are encumbered, though, and the University of California has communicated that fact. But what does that actually mean now that V7 has been released and that's what the files were based on? Are they no longer encumbered? Warner

3 years, 6 months

Vint Cerf tests positive for COVID-19.

by Dan Cross

He announced it on Twitter. I'm sure we all wish him well and a speedy recovery. Note, his tweet says that he is recovering. https://twitter.com/vgcerf/status/1244636584508604417?s=20

3 years, 6 months

reviving a bit of WWB

by Doug McIlroy

I would like to revive Lorinda Cherry's "parts". Implicit in "revival" is dispelling the hundreds of warnings from gcc -Wpedantic -Wall -Wextra. Has anybody done this already? Doug

3 years, 9 months

GBACA

by Mary Ann Horton

The topic of GBACA (Get Back At Corporate America), the video game for the BLIT/5620, has come up on a Facebook group. Does anyone happen to have any details about it, source code, author, screen shots, ...? Thanks, Mary Ann

3 years, 9 months

Re: [TUHS] Fwd: Choice of Unix for 11/03 and 11/23+ Systems

by Paul Ruizendaal

> V6, as distributed, had no networking at all. There are two V6 systems with > networking in TUHS: > > https://minnie.tuhs.org//cgi-bin/utree.pl?file=SRI-NOSC <https://minnie.tuhs.org//cgi-bin/utree.pl?file=SRI-NOSC> > https://minnie.tuhs.org//cgi-bin/utree.pl?file=BBN-V6 <https://minnie.tuhs.org//cgi-bin/utree.pl?file=BBN-V6> > > The first is an 'NCP' Unix (unless unless you have an ARPANet); the second is > a fairly early TCP/IP from BBN (ditto, out of the box; although one could write > an Ethernet driver for it). I’ve also done a port of the BBN VAX stack to V6 (running on a TI990 clone), using a serial PPP interface to connect. Experimental, but may have the OP's interest: https://www.jslite.net/cgi-bin/9995/dir?ci=tip > There's also a fairly nice Internet-capable V6 (well, PWB1, actually) from MIT > which I keep meaning to upload; it includes SMTP, FTP, etc, etc. I also have > visions of porting an ARP I wrote to it, and bringing up an Ethernet driver > for the DEQNA/DELQA, but I've yet to get to any of that. I’d love to have a look at that and compare and contrast the approaches. I’m finding that BBN’s original design, with a separate kernel thread for the network stack, is elegant but difficult to tune: too much priority and it crowds out user processes, too little and the slow PPP line is not kept busy. I think I’m beginning to understand why CSRG (and later also BBN) moved to the interrupt driven structure of 4.2BSD: perhaps it was also difficult to tune for a VAX with ethernet.

3 years, 9 months

Re: [TUHS] Fwd: Choice of Unix for 11/03 and 11/23+ Systems

by jnc＠mercury.lcs.mit.edu

> From: Paul Riley > In the bootable images archive, there's the "Unknown V6" RL02 > image. I've tried that on SimH configured as an 11/23+ with 256kB of RAM > and it seems to work fine. Sorry, where's this archive? Somewhere in: https://www.tuhs.org/Archive/Distributions/Research/ I assume? From the description, that might be from the 'Shoppa disks'; didn't realize that was a /23 on those. > I would assume that Ethernet boards are available, but not supported on > V6. V6, as distributed, had no networking at all. There are two V6 systems with networking in TUHS: https://minnie.tuhs.org//cgi-bin/utree.pl?file=SRI-NOSC https://minnie.tuhs.org//cgi-bin/utree.pl?file=BBN-V6 The first is an 'NCP' Unix (unless unless you have an ARPANet); the second is a fairly early TCP/IP from BBN (ditto, out of the box; although one could write an Ethernet driver for it). There's also a fairly nice Internet-capable V6 (well, PWB1, actually) from MIT which I keep meaning to upload; it includes SMTP, FTP, etc, etc. I also have visions of porting an ARP I wrote to it, and bringing up an Ethernet driver for the DEQNA/DELQA, but I've yet to get to any of that. > it's hard to glean that wisdom from reading the manual. Yeah, DEC manuals went through a phase-change around about the time of the /23. Old DEC manuals are wonderful; stuffed to the gills with deep technical details. Suitable for engineers... Later, they turned into manuals for 'ordinary people' - 'plug cable C1 into plug P1'. Semi-useless; although one can often glean a few useful morsels if you trawl through the entire thing. That's why I've been doing PDP-11 pages on the CHWiki which attempt to cover a lot of technical detail, in a high technical content/size way. If you need something that's not there, let me know, and I'll get to adding it. Noel

3 years, 9 months

reboot(2) system call

by Warner Losh

I've done some research for a friend about when the reboot() system call was added, and how it related to the sync, sync, sync dance. https://bsdimp.blogspot.com/2020/07/when-unix-learned-to-reboot2.html may be of interest. Please do let me know if I've gotten something wrong... Warner

3 years, 9 months

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TUHS September 2020