test-drb June 2009

test-drb@ccmp.vtda.org

233 participants
404 discussions

by healyzh＠aracnet.com

It's been a long hard day of moving stuff today, but we made great progress. We *should* finish tomorrow, I sure hope so. Basically we have two 19" racks left, a cart, BA123, and a couple little items, and a bunch of empty boxes. There have been some nice "finds" as a result of this move. I learned today I still have my DECstation 5000/133 that I bought to run NetBSD, that was definitely a highlight of the day since I've been regretting getting rid of it! :-) I found I still have my DECserver 200/MC as well, which I also thought was long gone. I've also learned I have even more DEC spares than I thought I had, including 1-2 more BA23's than I realized. The really shocking thing is that it appears I might actually have good access to a majority of my collection when I'm done with this move. If things work as planned in setting up the garage, I hope to have a corner with several different systems I've not had room for in years setup. The real question will be, when will I ever find the time. Zane -- | Zane H. Healy | UNIX Systems Administrator | | healyzh at aracnet.com (primary) | OpenVMS Enthusiast | | MONK::HEALYZH (DECnet) | Classic Computer Collector | +----------------------------------+----------------------------+ | Empire of the Petal Throne and Traveller Role Playing, | | PDP-10 Emulation and Zane's Computer Museum. | | http://www.aracnet.com/~healyzh/ |

15 years, 1 month

Fw: Still Falling for Tetris, 25 Years After Its Birth

by alec＠sensi.org

http://thejakartaglobe.com/lifeandtimes/still-falling-for-tetris-25-years-a… http://news.google.com/news?pz=1&ned=us&hl=en&q=tetris P.S. I have the original TETRIS.SAV binary for the Elektronika-60 (a Soviet LSI-11 clone) for the RT-11. It works under SIMH. Unfortunately, I have NO good opensource VT-52 emulator to play. Original Tetris requires 0177 character to be BLOCK to draw. -- -=AV=-

15 years, 1 month

Interesting IBM 5150... or something

by chrism3667＠yahoo.com

it doesn't look all that muc like a 5150 probably because it isn't one. Durn looks just like a 5170 to me. I have the 5150 version. Don't know if it's tempest tested or not. Figured it was simply a loosely mil-spec, ruggedized, industrialized version for certain environments. There was a "compatible" CGA monitor (Terry Yager used to have one). Mine doesn't have a keyboard, so surely utilizing a vanilla k/b will render it "powerless". Or what have you. AAMOF, if anyone wants the thing, w/the rust that has accumulated due to being stored in a something less then sealed outdoor shed, it's their's for shipping. The power switch is also missing. I think the p/s is there though. You could strip it down and repaint it I guess :) --- On Thu, 6/11/09, Warren Wolfe <lists at databasics.us> wrote: > From: Warren Wolfe <lists at databasics.us> > Subject: Re: Interesting IBM 5150... or something > To: "On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > Date: Thursday, June 11, 2009, 5:55 PM > Brian Lanning wrote: > > I've never heard of this. Looks even more > tank-like than the 5150. > > Look at the backplane where the cables go in. > > > > http://cgi.ebay.com/Vintage-IBM-Tempest-Computer-for-Classified-work_W0QQit… > > > > Oh, for Pete's sake, a Tempest terminal, right when we're > talking about classified info. Just so you know, this > one is compromised by the insecure monitor (I think - it > should be MUCH bigger, and not plastic, if Tempest approved) > and the non-Tempest keyboard. "Tank-like" is a very > concise description. > > I worked for a company that made (CP/M capable) Tempest > terminals for the Burroughs TD-830 emulation market. > The government would not tell you what acceptable levels of > emissions were -- a company had to make a prototype, and > send it in for testing. A while (gov't time) later, > thumbs up or thumbs down. It often took many cycles to > get a good one. Once it was approved, they bought them > for HUGE prices. Quite a money-maker. > > > > Warren > >

15 years, 1 month

Move on, nothing to see here (was RE: the arrogance of youth [was RE: UNIX V7])

by IanK＠vulcan.com

Wow. "I don't read [anything]." I'm done with this. This is either troll bait or a truly sad psychopathology. --- Folks, let get on with things. Hey, we just got a restored PDP-8/TC08/TU56 booting OS/8! After calibrating the TC08, I turned off the system to put all the 'skins' back in place, fired it up... and it wouldn't boot After checking the obvious things, I decided to let the system warm up for fifteen minutes or so. Yep, it booted fine. Something tells me I need to look at the RC components in those one-shots and clock circuits, and probably replace some realllllllllly old capacitors. -- Ian ________________________________________ From: cctalk-bounces at classiccmp.org [cctalk-bounces at classiccmp.org] On Behalf Of Kirn Gill [segin2005 at gmail.com] Sent: Thursday, June 11, 2009 9:18 PM To: On-Topic and Off-Topic Posts Subject: Re: the arrogance of youth [was RE: UNIX V7] -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Rich Alderson wrote: > Simply because you don't hear about an OS in _Linux Journal_ does > not mean that it's dead, or even ailing. I don't read _Linux Journal_. Or _BusinessWeek_. Or any magazines. I occasionally glance at Slashdot if I'm desperate. It's quickly becoming a reorganizing 'digg' link aggregate. Otherwise, I just Google for nonsense terms. The news you find that way... -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkox1yoACgkQF9H43UytGibF1QCggHyvvhtqRSMJs0TBQ8pftPrR ReEAnj0b/Xrp1PvkoUdRbRBS6lxPWRvk =JXAz -----END PGP SIGNATURE-----

15 years, 1 month

fpga pdp's

by bqt＠softjar.se

Brad Parker <brad at heeltoe.com> wrote: > Eric Smith wrote: >> > Brad Parker wrote: >>> >> I did a "direct decode" pdp-11 in verilog recently just to see how >>> >> big it would be (and because I was frustrated with the pop-11 >>> >> project). It fits nicely & boots RT11 at 50mhz. >> > At that speed, surely it hasn't finished booting RT11 yet! > sorry, I don't get the joke. clock is 50mhz, or 20ns; each state is one > clock and on average > an instruction is 3 states. I calculated 10mips. it seems to boot much > faster than my 11/44 :-) > > what did I miss? That case matters. :-) m = milli M = Mega Johnny -- Johnny Billquist || "I'm on a bus || on a psychedelic trip email: bqt at softjar.se || Reading murder books pdp is alive! || tryin' to stay hip" - B. Idol

15 years, 1 month

PDP 11/73 on the Internet

by bqt＠softjar.se

Dave McGuire <mcguire at neurotica.com> wrote: > On Jun 11, 2009, at 7:32 AM, Johnny Billquist wrote: >> > Probably. I already have most of the TCP/IP stack running. :-) > > Under RSX? Really?? Yes. -------8<------ >set /host Host=MIM RSX-11M-PLUS V4.6 BL87mP >time 11:44:33 13-JUN-09 >ifc sho all Intf State Address Broadcast MTU ACP Line IF0: Run Madame.Update.UU.SE/24 130.238.19.255 1500 ETHACP UNA-0 IF1: Run Localhost/8 127.255.255.255 8128 >ifc sho arp Host MAC TTL Flg IF r1.n.it.UU.SE (130.238.19.254) 00-0B-BE-E8-A9-3F 1799 2 IF0: Tempo.Update.UU.SE (130.238.19.17) 00-80-C8-76-E5-3E 1783 2 IF0: UP.Update.UU.SE (130.238.19.210) 00-B0-D0-65-39-BE 1693 2 IF0: Wasabi.Update.UU.SE (130.238.19.170) 00-06-5B-FE-4D-3E 1686 2 IF0: Boomerang.Update.UU.SE (130.238.19.1) 00-06-5B-F2-44-1D 1543 2 IF0: Psilocybe.Update.UU.SE (130.238.19.25) 00-07-E9-40-02-76 1493 2 IF0: Prus.Update.UU.SE (130.238.19.50) 00-03-BA-06-37-7B 1452 2 IF0: Hygrocybe.Update.UU.SE (130.238.19.76) 00-80-C8-77-0C-76 1427 2 IF0: Mim.Update.UU.SE (130.238.19.211) 00-80-AD-41-CB-EB 1285 2 IF0: Amanita.Update.UU.SE (130.238.19.70) 00-90-27-5D-10-2D 937 2 IF0: Peppar.Update.UU.SE (130.238.19.172) 00-06-5B-6D-D7-19 854 2 IF0: Anis.Update.UU.SE (130.238.19.174) 00-06-5B-6D-D7-B3 840 2 IF0: Kanel.Update.UU.SE (130.238.19.171) 00-06-5B-68-92-78 838 2 IF0: Kummin.Update.UU.SE (130.238.19.173) 00-06-5B-6D-D8-79 823 2 IF0: Saffran.Update.UU.SE (130.238.19.176) 00-06-5B-68-92-58 819 2 IF0: Kardemumma.Update.UU.SE (130.238.19.177) 00-06-5B-6D-D8-2C 805 2 IF0: Humle.Update.UU.SE (130.238.19.179) 00-06-5B-6D-D7-B6 804 2 IF0: Basilika.Update.UU.SE (130.238.19.169) 00-06-5B-6D-D7-26 782 2 IF0: Oregano.Update.UU.SE (130.238.19.175) 00-06-5B-6D-D8-C5 774 2 IF0: >trt 74.125.77.99 Tracing route to 74.125.77.99, max 30 hops 1 r1.n.it.UU.SE (130.238.19.254) 0ms. 0ms. 20ms. 2 ? (130.238.6.237) 0ms. 0ms. 0ms. 3 ? (193.11.0.233) 0ms. 0ms. 0ms. 4 ? (130.242.82.197) 0ms. 0ms. 0ms. 5 ? (193.10.252.161) 0ms. 0ms. 20ms. 6 ? (193.10.252.86) 0ms. 0ms. 20ms. 7 ? (193.10.252.94) 0ms. 0ms. 20ms. 8 ? (193.10.68.42) 0ms. 0ms. 0ms. 9 ? (209.85.252.186) 20ms. 0ms. 0ms. 10 ? (209.85.254.153) 40ms. 20ms. 40ms. 11 ? (216.239.48.10) 20ms. 20ms. 40ms. 12 ? (209.85.248.182) 160ms. 40ms. 40ms. 13 ? (64.233.175.246) 20ms. 40ms. 40ms. 14 ? (72.14.239.197) 40ms. ? (72.14.239.199) 40ms. 20ms. 15 ? (209.85.255.106) 60ms. 40ms. ? (209.85.255.102) 40ms. 16 ? (74.125.77.99) 40ms. 40ms. 40ms. > -------8<------- Johnny -- Johnny Billquist || "I'm on a bus || on a psychedelic trip email: bqt at softjar.se || Reading murder books pdp is alive! || tryin' to stay hip" - B. Idol

15 years, 1 month

Nearly there with IBM 029 KeyPunch

by roger.holmes＠microspot.co.uk

> From: Brent Hilpert <hilpert at cs.ubc.ca> > > Roger Holmes wrote: >> >> The theory said to change the resonant frequency of my keypunch's >> ferro-resonant power regulator from 60Hz to 50Hz I should up the 15uF >> capacitor to 21.6 uF. Well I tried 21.5, and the voltage went up by >> ONE volt. Hmm, scratch head, at least it went in the right direction. >> Search around for AC capacitors and find one in a defunct large >> electric lawnmower. Its 30uF, I think about replacing the 15 with it >> but if an extra 6.5uF only gained one volt, and I need 6 then it >> seemed reasonable to combine it and try 45 uF. That gives me 46volts, >> only 2 volts short. I throw in the 6.5uF too and I get 47 volts. I >> try > > I had a niggling concern about this when the suggestion to change > the C was > first profferred. > I don't have a thorough enough understanding of the ferro-resonant > principle > to categorically say what the problem is but I can half-think of a few > possible issues: > > - Because the ferroresonance principle involves the inductor working > in the core saturation region, the standard resonance equation with > which you calculated the new C may not be applicable. (I see you got > the square of f proportion.) > > - If the changed LC relationship changes the circulating current > in the LC circuit then the core magnetic field will also be affected, > which would upset the rest of the transformer design targets. > > - Changing the C changes the resonant frequency in an LC circuit, > as you desire to accomplish. However, the Q factor of the resonant > circuit is dependant upon the ratio of L/C, so you have also changed > the Q factor. I'm less sure if this would matter, as the circuit > is operating at a well-fixed frequency. > > My remaining concern might be that even with the new C bringing the > V up, > the regulation function of the supply may have been lost if the > transformer > is no longer functioning in the regions it was designed to. Yes, but relays are unlikely to be damaged by a few volts too much. My concern is the current in the intermediate winding could damage itself. So far so good but I am charging a much larger capacitance for a slightly longer period so I would think the current would be higher. To get 48 volts I am going to have to add about another 6 uF, so about 48 F instead of 15, so very roughly three times the current, assuming (and its a big assumption I can't justify), that the voltage is the same.

15 years, 1 month

Available: 5.25 inch disk duplicator (1987), ACM/IEEE magazines ('70s+)

by tosteve＠yahoo.com

Please email Anneliese if interested: ------------------------------------- > My 5.25 inch floppy duplicating machine - > The Ventuno V5 - diskette autoloader.? > The documentation has a date of 9/24/1987.? > > It is in the original box from Ventuno and has never been > out of the box. > > I also have LOTS of old computer journals (ACM and > IEEE) and magazines - some going back to the 70s. > > Thanks, > Anneliese Gimpel <anneliese at gimpel.com> >

15 years, 1 month

Looking for Tandon TM-100 service manual (w/schematics & waveforms)

by jzg22＠drexel.edu

I'm looking for Tandon TM100 service manual w/schematics; one of my TM-100-2 drives in an IBM 5150 here started acting up (stepper motor is stuck at track 40 and won't decrement) and I'm trying to find a useful service manual to debug it. The two tm100 documentation/service pdfs I've seen are a scan of a staple-removed 21 page or so packet (this scan is missing pages 8, 9, 12, and 13) which has no schematics and is missing some pages; The other is 7 pages scanned from part of a larger document (100 pages or so), which looks like it would be useful if I had the whole thing. Neither of them are particularly helpful. Does a scan of the larger tm100 service manual exist? Does anyone have a paper copy I could borrow/copy/etc? -- Jonathan Gevaryahu jgevaryahu(@t)hotmail(d0t)com jzg22(@t)drexel(d0t)edu

15 years, 1 month

Looking for Tandon TM-100 service manual (w/schematics & waveforms)

by dm561＠torfree.net

Date: Fri, 12 Jun 2009 01:51:34 -0400 From: Jonathan Gevaryahu <jzg22 at drexel.edu> Subject: Looking for Tandon TM-100 service manual (w/schematics & waveforms) I'm looking for Tandon TM100 service manual w/schematics; <snip> Jonathan Gevaryahu jgevaryahu(@t)hotmail(d0t)com jzg22(@t)drexel(d0t)edu --------------- I have a paper version of the technical manual here, but I can't believe that there isn't a scanned one out there somewhere; if no one comes up with one and you really can't find one, PM me off-list. mike

15 years, 1 month

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test-drb June 2009