TUHS September 2003

tuhs@tuhs.org

25 participants
23 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, 6 months

RE: [TUHS] Re: 4.3 BSD version in the Unix Archive

by msokolov＠ivan.Harhan.ORG

Markus Weber <jmbw(a)nather.com> wrote: > Stand/copy from tms(0,1) to ra(0,1) fails with a 'disk unlabeled' diagnostic > on a cold disk image. It should print the unlabeled diagnostic, but then proceed rather than fail. I just double-checked the standalone driver source, and it does provide a default label for RA82, as long as the MSCP controller actually returns RA82 as the MSCP disk ID. Does it give you an error message about disk type (some hex humber) not supported? If so, SIMH's MSCP emulation must be lacking in quality. > If only ra0 is > configured for simh, it takes the kernel a long time to decide that ra1, > ra2, and ra3 are offline. Having said that, I do not know how long this > takes on actual hardware. On real HW it takes no noticeable time. > the kernel (and > not simh) subsequently segfaults (trap type 8, code = c0000200, pc = > 8003fe16). Well, obviously this doesn't happen on real HW, since on real HW it works (I'm typing this message on a MicroVAX 3+ running 4.3BSD-Quasijarus). But I will grant the possibility that the kernel is not w/o fault either in that perhaps it's going south (dereferencing a garbage pointer and crashing) when the MSCP controller (in this case SIMH's poor emulation) is doing something it doesn't expect. If this is so, it should be fixed, since even w/o emulators (which I refuse to support on principle) real HW can be broken and return garbage on reg reads, and the kernel must handle it gracefully. I'll look into it. MS

21 years, 1 month

Re: 4.3 BSD version in the Unix Archive

by Joseph F. Young

From my experience, you need to have a recent release of SIMH in order to run 4.3BSD. A few months ago, I managed to build "working" Quasijarus and Reno disk images (Quasijarus appears to work fine for me, but Reno is as buggy as I remember it being on real hardware). I had to use Ultrix and Netbsd to do the bootstrap/install; I could not get the tape boot to work at all. Here's my SIMH ini file for Quasijarus: --------------------------------------------------------------------------------------------------------------- set cpu 32m set cpu conhalt set tto 7b set tti 7b at rom ka655.bin at nvr nvr.bin set rq0 ra82 at rq0 bsd43q_ra0.dsk set rq1 ra82 at rq1 /dev/null set rq2 ra82 at rq2 /dev/null set rq3 ra82 at rq3 /dev/null set tq0 locked at tq0 BSD43Q_TAPE.tap set dz 7b at -m dz0 4501 at xq eth0 set lpt dis set ts dis set rl dis boot cpu -------------------------------------------------------------------------------------------------------------- Here's an example boot log for Quasijarus under SIMH: >>>boot dua0 (BOOT/R5:0 DUA0 2.. -DUA0 1..0.. loading boot Boot : /vmunix 327204+103384+130352 start 0x23a8 4.3 BSD Quasijarus UNIX #0: Sat Oct 2 22:15:38 CDT 1999 msokolov@luthien:/usr/src/sys/GENERIC real mem = 33521664 SYSPTSIZE limits number of buffers to 80 avail mem = 31697920 using 80 buffers containing 655360 bytes of memory MicroVAX 3000, ucode rev 6 tmscp0 at uba0 csr 174500 vec 774, ipl 15 tms0 at tmscp0 slave 0 tms1 at tmscp0 slave 1 uda0 at uba0 csr 172150 vec 770, ipl 15 uda0: version 3 model 3 uda0: DMA burst size set to 4 ra0 at uda0 slave 0: RA82, size = 1216665 sectors ra1 at uda0 slave 1: no disk label: ra82, size = 1216665 sectors ra2 at uda0 slave 2: no disk label: ra82, size = 1216665 sectors ra3 at uda0 slave 3: no disk label: ra82, size = 1216665 sectors dz0 at uba0 csr 160100 vec 300, ipl 15 dz1 at uba0 csr 160110 vec 310, ipl 15 dz2 at uba0 csr 160120 vec 320, ipl 15 dz3 at uba0 csr 160130 vec 330, ipl 15 qe0 at uba0 csr 174440 vec 764, ipl 15 qe0: delqa, hardware address 08:00:2b:aa:bb:cc Changing root device to ra0a WARNING: clock gained 91 days -- CHECK AND RESET THE DATE! Automatic reboot in progress... Mon Sep 29 08:38:03 CDT 2003 /dev/ra0a: 669 files, 5242 used, 25429 free (37 frags, 3174 blocks, 0.1% fragmentation) /dev/rra0g: 12267 files, 71408 used, 376714 free (1634 frags, 46885 blocks, 0.4% fragmentation) Mon Sep 29 08:43:51 CDT 2003 checking quotas: done. starting system logger preserving editor files clearing /tmp standard daemons: update cron accounting. starting network daemons: routed named inetd printer. Sep 29 08:44:28 simh named[66]: /etc/named.boot: No such file or directory starting local daemons: sendmail. Mon Sep 29 08:44:52 CDT 2003 4.3 BSD UNIX (simh.localdomain) (console) login: ----------------------------------------------------------------------------------------------------------- Cheers, ---- Joseph Young jy99(a)swbell.net

21 years, 1 month

RE: [TUHS] Re: 4.3 BSD version in the Unix Archive

by msokolov＠ivan.Harhan.ORG

Markus Weber <jmbw(a)nather.com> wrote: > Clearly, stand boots. I'm hopeful that 4.3-Quasijarus0a will indeed run on > simh. Just be warned that I have heard from others that the kernel won't boot on SIMH due to sucky emulation. > For some follow-up questions... Standalone format supports hp and up disks, > but simh only emulates RL and RQ controllers - which means that the Ultrix > utilities to label a cold disk must be ported or recreated to the simh host > platform. Of course, it may well be that applying a hex editor to the disk > image will suffice. Arghh, why don't people just f-ing get it! Standalone format is what is known as low-level format in the PeeCee world (magnetic level stuff, certainly not needed on an emulator), and it has absolutely nothing to do with disk labeling. 4.3BSD-Quasijarus0[a] does not have standalone disklabel, but RA82 is known to the compiled-in tables and thus will work unlabeled. Also Ultrix' disk labels are not useful for 4.3BSD-Tahoe/Quasijarus, since the labels are stored in a different place in a different format. (Berkeley and DEC developed pack labels independently. BSD stores them in the boot block, Ultrix stores them in the root fs superblock, which has the disadvantage of requiring you to create some dummy root fs before you can write a label, even if you want a root fs of different size.) > Am I correct that Quasijarus supports RA82 disks (using the ra type) and the > TK50 tape (as a tms)? Yes. MS

21 years, 1 month

Any unix for MicroPDP-11?

by Matthew E Hoskins

Greetings all, and forgive me if this was answered prevously, but i didnt see it when i grepped the archive.. Are there any *nix versions in the archive that will run on a MicroPDP11 model 630QZ-AX? Currently it is running RSX-11 /w what looks like a seagate MFM/RLL type HDD. It has only dual floppy for removeable. But i might be able to get my hands on a TK50/70 and qbus adapter for it. Thanks. -Matt -- # Matthew E. Hoskins ############################################# # Information Systems Analyst /| / / / ~~/~~ # # University Information Systems / | / / / / # # New Jersey Institute of Technology / | / / / / / # # University Heights, Newark, NJ 07102 / |/ /___/ / / # # Ph: 973-596-5202 # Beep: pagematt(a)cobol.njit.edu # # Rm: 5400 GITC Building # Email: matt(a)njit.edu # ################################################################### "Any technology sufficiently advanced is indistinguishable from a perl script" "Anyone who considers arithmetical methods of producing random digits is, of course, in a state of sin -- John von Neumann"

21 years, 1 month

Re: [TUHS] Re: 4.3 BSD version in the Unix Archive

by msokolov＠ivan.Harhan.ORG

Warren Toomey <wkt(a)tuhs.org> wrote: > The 4.3BSD-Quasijarus dists were compressed with a compression format > that's not compatible with either gzip nor old compress(1). Michael > Sokolov should be able to send in some notes on the tools required. Yes, for political reasons I needed to make the 4.3BSD-Quasijarus compressor a version of compress, not gzip (can't have any GNU), but I wanted to have the higher compression ratio of deflation, so I created a new version of compress that supports deflation in addition to the original LZW algorith. You can find the new compress in components/compress.tar either on my FTP site or in Warren's archive in the 4BSD area. > > Is there a set of 4.3BSD-Tahoe Vax distribution files that's complete? > > Not that I know of. "4.3BSD-Tahoe Vax distribution" is an oxymoron. Berkeley released the Tahoe tape with Tahoe binaries, no VAX binaries. I was the one who compiled the Tahoe source for the VAX, and the result was 4.3BSD-Quasijarus0. OTOH, you may be referring to the fact that the Tahoe distribution in the archive is broken. Yes, it is. Unfortunately there was an unrecoverable tape read error. > > Finally, do you know of any 4.3BSD version that will install and run on > > simh? Quasijarus and Tahoe of the Unix Archive are broken for me and Reno > > doesn't boot stand. Admittedly, I haven't tried the vanilla version yet. > > Not that I know of. I'll cc this to the TUHS list and see if any other > people know the answer. This has come up time and again. SIMH's emulation of VAX is too poor. VAX is not an easy architecture to emulate. MS

21 years, 1 month

Re: 4.3 BSD version in the Unix Archive

by Warren Toomey

On Wed, Sep 24, 2003 at 11:12:54AM -0500, Markus Weber wrote: > Can you decompress the files in either of the two 4.3BSD-Quasijarus dists > (in /4BSD/Distributions)? If so, how? The oldest versions that I have date > back to a CD somebody cut me in mid-2000, and I can't decompress these files > no matter what. The 4.3BSD-Quasijarus dists were compressed with a compression format that's not compatible with either gzip nor old compress(1). Michael Sokolov should be able to send in some notes on the tools required. > Is there a set of 4.3BSD-Tahoe Vax distribution files that's complete? Not that I know of. > Finally, do you know of any 4.3BSD version that will install and run on > simh? Quasijarus and Tahoe of the Unix Archive are broken for me and Reno > doesn't boot stand. Admittedly, I haven't tried the vanilla version yet. Not that I know of. I'll cc this to the TUHS list and see if any other people know the answer. > If I manage to get a version of 4.3 working on simh, I'll offer a turnkey > system for download on my site. Yes, I'd appreciate that :-) Thanks, Warren

21 years, 1 month

ctcompare 1.2 is up

by Warren Toomey

Hi all, It's probably bad form to release a new version of a program 24 hours after the last version, but version 1.2 of my C comparison tool is now available at http://minnie.tuhs.org/Programs/Ctcompare. The speed has been vastly improved by using the Rabin-Karp string comparison algorithm, and thanks go to Roger Willcocks who pointed me at the algorithm. There are no other bug fixes, and I shouldn't bring out a new version for quite a while now. So if you have access to any restricted C source trees, maybe you can send me the ctf file of the tree so I can do some comparisons! Cheers, Warren

21 years, 1 month

Comparing UNIX/Linux Code

by Maciek Bieszczad

An interesting attempt at finding shared code: http://www.rickbradley.com/chron/20030619/ -- Maciek (macbiesz(a)optonline.net)

21 years, 1 month

Re: [TUHS] Lexical comparator

by Warren Toomey

On Thu, Sep 18, 2003 at 01:41:10PM +0300, Aharon Robbins wrote: > > If anybody has Unix kernel trees which they cannot divulge due to licensing > > restrictions, I'd appreciate you creating tokenised files of the kernel > > source and e-mailing them to me. > > Hmmm. Just between us chickens, given tokenized versions of an entire tree, > how hard would it be to recreate a functional kernel? Pretty damn hard. All identifiers, (variable names) are reduced to a single token. Actually, that's not true. The meaning of the names is removed an replaced with numeric identifiers that are unique to each file. Here's a tokenised portion of 32V (bio.c): 56: struct id10 * 57: id13 ( id14 , id15 ) 58: id16 id14 ; 59: id17 id15 ; 60: { 61: register struct id10 * id18 ; 62: 63: id18 = id19 ( id14 , id15 ) ; 64: if ( id18 ->id20 & id21 ) { 65: #ifdef id1 66: id9 . id5 ++ ; 67: #endif 68: return( id18 ) ; 69: } 70: id18 ->id20 |= id22 ; 71: id18 ->id23 = id24 ; 72: ( * id25 [ id26 ( id14 ) ] . id27 ) ( id18 ) ; 73: #ifdef id1 74: id9 . id3 ++ ; 75: #endif 76: id28 ( id18 ) ; 77: return( id18 ) ; 78: } Now go and check the actual source and work out which function it is! [ see http://minnie.tuhs.org/UnixTree/32VKern/usr/src/sys/sys/bio.c.html ] Warren

21 years, 1 month

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TUHS September 2003