test-drb December 1999

test-drb@ccmp.vtda.org

186 participants
742 discussions

by cmcmanis＠mcmanis.com

Yet-another-VAX has been restored to almost operating condition :-) Thanks everyone on the backplane, I didn't have the emply slot it just looked like it shipped that way given the description in the Module Database book. I put in the minimum system (CPU, Memory, DELQA) and that booted, then I swapped out the CPU for a KA655 I had handy and used it to probe around. So far so good, then installed the Dilog drive card, that was recognized after I correctly oriented the 34pin cable (it was one of those "rainbow" cables and neither polarized nor marked vis-a-vis pin 1. That got me the drive to be visible, which, when I tried booting it, started loading VMS 5.4, and I foolishly told it what the date was and it explained that my license for VMS was expired. Not a problem with my handy dandy License PAK from DECUS, but then I tried to bring up the TK50 that I added to the system I disassembled enough to route the cable. Installed the M7546 and the TK50 Powered on and did a SHOW DEV and it showed up. Then I put in a TK50 cartridge, and got nothing but blink. -- Can't get the tape out (without disasembly) -- Now the show dev doesn't show the tape! (the card shows up but it hangs trying to talk to MUA0. (sigh) The ethernet works however. Next step will be to netboot it into VMS or NetBSD. Note to Eric Smith: You can't get the serial console to work with the VCB02, period. Its got a couple of 16MB cards in it so it is a pretty sweet machine at the moment. If I can't resuscitate the TK50 I'll put a TQK70 and TK70 in there instead. Its a much more reliable drive anyway. I'm also trying to construct a sort of qbus extender with a couple of Qbus slots on the outside for doing board testing. --Chuck

25 years

PDP-? Backplane

by a2k＠one.net

I'm a bit perplexed by this ad, mostly because I'm not a PDP person.. though I would very much like to be. On http://www.cadigital.com/enclosur.htm it reads: Digital Equiptment Q-bus BackPlane for PDP-8 $9 PDP 11/23 four slot dual height backplace, DEC model H9281, designed for use in all kinds of DEV Q-Bus systems. got me. But whatever it is, $9 sounds like a low price.. Kevin ------------------------------------------------------------------------------- "It's you isn't it? THE BASTARD OPERATOR FROM HELL!" "In the flesh, on the phone and in your account..." -- BOFH #3

25 years

Control Data tape cleaner attn: Eric Smith

by nerdware＠laidbak.com

Thanks to everyone who responded. It would appear that my friend does in fact have a tape cleaner. Next question: Does anyone need it? If so, email me off-list and I'll find out what he wants for it. Thanks. Paul Braun NerdWare -- The History of the PC and the Nerds who brought it to you. nerdware(a)laidbak.com www.laidbak.com/nerdware

25 years

Boot UNIX V7 disk images on Supnik's PDP-11 emulator?

by classiccmp＠mrynet.com

> I have hardly ANY docs, so if someone could point me in an appropriate > direction I'd be grateful. > > I'm trying to boot UNIX V7 off the disk images provided with Bob Supnik's > excellent PDP-11 emulator, running on my Ultra 5 under Solaris (compiled > with egcs/gcc): > > -rwxr-xr-x 1 mrbill other 222192 Dec 18 03:45 pdp11 > -rw-r--r-- 1 mrbill other 2048512 May 15 1998 unix_v7_rk.dsk > -rw-r--r-- 1 mrbill other 10485760 May 27 1998 unix_v7_rl.dsk > > bash-2.03$ ./pdp11 > > PDP-11 simulator V2.3d > sim> attach rl0 unix_v7_rl.dsk > sim> b rl0 > @ > > And thats as far as I get... anything just gives me back the @ > prompt (ODT?). > > Thanks for any help. > > Bill > > -- > Bill Bradford * mrbill(a)mrbill.net / http://www.mrbill.net > mrbill(a)sunhelp.org / http://www.sunhelp.org Following is a log of what to type at the "@" prompt: sim> b rl0 @r <---- Note: Once you make a typing mistake, you must restart. @boot e.g. It will ONLY return another @ for anything you type. @ <---- ^E typed to break to the simulator monitor Simulation stopped, PC: 157530 (BGE 157526) sim> b rl0 @boot <---- Start the boot program from the disk Boot : rl(0,0)unixnix <--- You may make corrections, etc, in this program unix not found : rl(0,0)unix mem = 205376 ... Hope that helps :) Regards, -Skots -- Scott G. Akmentins-Taylor InterNet: staylor(a)mrynet.com MRY Systems staylor(a)mrynet.lv (Skots Gregorijs Akmentins-Teilors -- just call me "Skots") ----- Labak miris neka sarkans -----

25 years

GridCase 3

by LFessen106＠aol.com

I recently came across a GRiDCase 3 laptop complete with MSDos 3.2 and Grid's own dos as well. This also came complete with 2 10 meg hard drives. My question is does anyone know of a way to disable the Grid-dos so that the computer automatically starts from the hard drive? I already know about pressing the "H" key at startup to accomplish this, but would like to have it start from "C" unattended since I am considering running a BBS for classic computer enthusiasts on this machine. Thanks for any help you may have to offer. -Linc.

25 years

H9278-A is this Q/CD or Q/Q

by CLASSICCMP＠trailing-edge.com

>The backplane is marked Micro-11 and H9278-A which is described as: > Q22 BUS BACKPLANE, 8 QUAD SLOTS > >Which sounds a whole lot like Q/CD all the way down to me. Anyone know for >sure? I'll be trying it out shortly so I may figure it out empirically. :-) You want to look at Micronote #5, "Q22 Compatible Options", for the straight scoop. If you want to look at it over the web, start at the Micronote index at http://metalab.unc.edu/pub/academic/computer-science/history/pdp-11/hardwar… In there you'll see the H9278 classified as Micro/PDP-11 H9278 4 X 3 Q22/CD and 4 X 5 Q22/Q22 Backplane In other words, this is your bog-standard BA23 backplane. The first three slots are CD, and the rest are serpentine. -- Tim Shoppa Email: shoppa(a)trailing-edge.com Trailing Edge Technology WWW: http://www.trailing-edge.com/ 7328 Bradley Blvd Voice: 301-767-5917 Bethesda, MD, USA 20817 Fax: 301-767-5927

25 years

H9278-A is this Q/CD or Q/Q

by dburrows＠netpath.net

See comments below. -----Original Message----- From: Chuck McManis <cmcmanis(a)mcmanis.com> To: Discussion re-collecting of classic computers <classiccmp(a)u.washington.edu> Date: Friday, December 17, 1999 9:01 PM Subject: H9278-A is this Q/CD or Q/Q >I'm trying to bring a Vaxstation 3200 back to life. It had been depopulated >but I've got all the boards. It is in a BA23 chassis. Now my previous >experience with uVAXen in BA23's was that the first 3 slots were Q/CD and >the rest were Q/Q with a serpentine bus. However trying to set up the >boards this way yielded some very strange results. Not the least of which >was no response by the disk controller. Caused by the blank in slot 2 >The other oddity was the dual hard drive control switches on the panel. The >chassis is marked: > VS31V-B2 >Which the module database lists as: > 650QV-A2,CLR,MS650-AA,VCB02,DELQA-M,CK-DELQA-YP,2 M9047,BC18Z-25,120V > >If I read this correctly, then the stock configuration on this box was: >1 KA660 ---------------- >2 clear >3 MS650-AA -------------Move up to 2 and insert grant here (M9047) on left side >4 VCB02 >5 VCB02 (4 plane) >6 VCB02 (4 plane) >7 DELQA M09047 >8 M9047 ??? Insert disk controller here. > >The backplane is marked Micro-11 and H9278-A which is described as: > Q22 BUS BACKPLANE, 8 QUAD SLOTS > >Which sounds a whole lot like Q/CD all the way down to me. Anyone know for >sure? I'll be trying it out shortly so I may figure it out empirically. :-) > Slot 1,2 and 3 have the grant on the left. The right side is reserved for memory interconnect. >I guess the real question is "Quad slot" code for "Q/CD" slot? No - Quad wide connector. Q/CD has the right side "reserved" like on a ba213. Q/Q is the serpentine section Dan > > >--Chuck >

25 years

H9278-A is this Q/CD or Q/Q

by cmcmanis＠mcmanis.com

I'm trying to bring a Vaxstation 3200 back to life. It had been depopulated but I've got all the boards. It is in a BA23 chassis. Now my previous experience with uVAXen in BA23's was that the first 3 slots were Q/CD and the rest were Q/Q with a serpentine bus. However trying to set up the boards this way yielded some very strange results. Not the least of which was no response by the disk controller. The other oddity was the dual hard drive control switches on the panel. The chassis is marked: VS31V-B2 Which the module database lists as: 650QV-A2,CLR,MS650-AA,VCB02,DELQA-M,CK-DELQA-YP,2 M9047,BC18Z-25,120V If I read this correctly, then the stock configuration on this box was: 1 KA660 ---------------- 2 clear 3 MS650-AA ------------- 4 VCB02 5 VCB02 (4 plane) 6 VCB02 (4 plane) 7 DELQA M09047 8 M9047 ??? The backplane is marked Micro-11 and H9278-A which is described as: Q22 BUS BACKPLANE, 8 QUAD SLOTS Which sounds a whole lot like Q/CD all the way down to me. Anyone know for sure? I'll be trying it out shortly so I may figure it out empirically. :-) I guess the real question is "Quad slot" code for "Q/CD" slot? --Chuck

25 years

PDP11

by nate＠nutopia.org

hi, I'm resurrecting a pdp-11/05 (hopefully) but I don't have anything in the way of docs. I was wondering if anyone could send me some info on a) the power connectors (I'm slowly trying to trace them around to make sure it's ok - I don't really trust a 25 year old power supply too much (-: ) and b) info about the current-loop interface. I'd like to convert it to ttl or rs/232 but I haven't been able to find any docs on the subject of current loops so all my info right now is speculation )-: thanks, -Nate Grady nate(a)logicprobe.org / nate(a)nutopia.org / nate(a)netsync.net (etc...) http://nate.nutopia.org "Diplomacy is the art of letting the other party have things your way." -- Daniele Vare "In the beginning the Universe was created. This has made a lot of people very angry and been widely regarded as a bad move." --Douglas Adams

25 years

PDP-8/L and TTY stuff (was Re: TTY and current loop questions)

by ethan_dicks＠yahoo.com

--- Tony Duell <ard(a)p850ug1.demon.co.uk> wrote: > > > Do you have the 3 grey books for the ASR33? Volume 1 of the maintenance > > > manual covers lubrication. > > > > If I do, it's long buried. BTW, are these 8.5"x11" paper or 11"x17" paper? What's the synopsis for the area around the > Well, the general idea is to clean and dry the type cylinder and the > hammer face... One thing that I did mention and I'll mention again is that my hammer face is not original - I stuck on a rubber sticky foot and I suspect that it is part of the problem. I read here recently that someone has had luck with carved pink pearl erasers, but I haven't tried that. Worst case is I can nab the printing mechanism out of my wire-service TTY, the one with the 110 baud data set (modem) built into the pedestal. It doesn't fix this one, but it does get me up and running more quickly. The other thing that sticks is the line-feed mechanism. I can see the pawl on the back side of the ratchet at the left of the main roller and it doesn't always spring back up. Presumably it's another lube job waiting to happen. Neither of these teletypes has been stripped down in the 13+ years that I've owned them. To make matters worse, neither one has been powered on in ten years. I haven't had time to work with my classic machines until this year. > However, if it's actually sticking, then either something is bent or the > old oil is gumming it up (probably the latter). In which case _I'd_ > dismantle the carriage totally, clean all the parts in a suitable > solvent, put it together and oil it. I can get for under $15 a disposable carburetor solvent bath-in-a-can at a local auto parts store. Presumably, this is a suitable solvent. The print mechanism should fit nicely for immersion. > I did my first teletype without the manuals, but unless you had a > misspent youth like me dismantling and reassmbling everything in sight, > I'd not recomend it... With the manuals it's not too hard if you're > generally OK with hand tools. I used to disassemble sewing machines as a youth. I never tried putting them back together, but I'm OK with hand tools. I just repaired the works of an upright piano that I was gifted with - its problem was dried and cracked glue joints on one key mechanism and the entire damping bar. Obviously, a teletype has more moving parts than a piano, but there is a superficial resemblence. > > How many types/grades of lubricants are there for a proper lube job on a > TTY? > > 2 AFAIK. One is an oil. It's a light-ish (SAE 10 or thereabouts) engine > oil. I normally use the lighter of the 2 oils recomended for my Myford > lathe, as it's about right and I have an oilcan of it anyway. But any > light machine oil (NOT WD40!!) is OK. Sewing machine oil? "Three-in-one" brand general-purpose oil? Am I on the right track here? > The other is a grease. Just general-purpose high melting point grease, > like you'd use on a car (Oooops, modern cars don't have grease points > :-(). Castrol LM or something like that. I also restore Volkswagens. I know what a grease fitting is and how to operate a grease gun. (As an aside, I just got a 1975 Microbus in operating shape for $300 - it needs some work in the fuel injection system, but otherwise OK). > If you can find the manuals, I can talk you through taking the carriage > out and apart (the manaul is not that clear in places). Without them it's > going to be more difficult, if only because of problems in refering to > parts (with the parts list I can use Teletype part numbers). Maybe someone will eventually scan a set it as was mentioned here. Alternatively, there is always the route of borrowing, xoxing and returning a set. I was looking at things again tonight... the -8/L is not 100%. I had to remove the PSU to fix the loose fuse holder - it wasn't just loose, the side lug had a cold joint on it. I had to remove the mains-in and mains-out sockets to get room for my tools, but all is well on that front now. The problem is that the machine does not correctly run the RIM loader. If I put a halt (7402) instruction in low core, location 0, say or even 20 and I run the RIM loader, after reading in one character, the CPU halts at that low core instruction. If I single step things, it does not wander off into low core. Another wierd symptom is that pressing the START switch increments the PC address, but only on the same page (i.e., 7777 becomes 7600) OTOH, some programs do work. I wrote a quick-n-dirty echo test. It works fine with my VT220... 0200 6032 KCC 0201 6031 KSF 0202 5201 JMP .-1 0203 6036 KRB 0204 6046 TLS 0205 6041 TSF 0206 5205 JMP .-1 0207 5200 JMP 0200 Nevertheless, the RIM loader fails if I put the CPU in RUN mode without the single-step switch thrown. Back to the drawings. Sigh. Thanks again for the good info. -ethan ===== Infinet has been sold. The domain is going away in February. Please send all replies to erd(a)iname.com __________________________________________________ Do You Yahoo!? Thousands of Stores. Millions of Products. All in one place. Yahoo! Shopping: http://shopping.yahoo.com

25 years

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test-drb December 1999