test-drb

test-drb@ccmp.vtda.org

101090 discussions

by jwsmail＠jwsss.com

When I got my first system running, S100, I had an Imsai 8080 with a Hayes 103 modem. I used it to log into multics and some BBS's at the time and record sessions and files and the like. I only had the usual 8" floppies, with eventually 1mb x 2 for storage. However, reason for mentioning was that there was a simple program which would auto answer on the Hayes modem and allow you to run things. One evening when my roommates and I had gone to dinner, a friend who was going to call at a certain time did so. However we had forgotten he was to call, and I had left the system up and connected to the phone. He called a couple of times and realized that we weren't around to pull the line, or call back, so he got his terminal up and running and left us a message on the screen for later. I sort of count it as the first sort of BBS type I ran. There was a program you could leave running which would challenge for a password, and then re-run when the modem lost signal, so you could have a low grade login that way. (password only). And one could take ones choice of files and xmodem them (which he did in future sessions). I logged into many BBS systems which weren't much more than this or a restricted menu program after you logged in. Some were nice with some presentation, and some were just (enter 1 to do ... 2 to do ... etc). Not much else really required if you want to get to very basics. With any BBS having more than just the floppies, login and messaging and more download options were the next level up. And after that there were various BBS software packages that had networks of like users that one could obtain. thanks Jim

8 years, 8 months

Eunice BSD on TK50

by silent700＠gmail.com

I have here a shipping box, a shrink-wrapped TK50 tape and various docs for Wollongong Group's "EUNICE BSD," which I take to be a BSD Unix-like environment for VMS. I can't find a copy of either the docs nor the bits online. I will take care of scanning the docs. I would like to send this tape to someone - Al K getting first shot if he's interested - who can image the TK50 cart and make it available to all. I have a spotty TKZ50 drive that I'd rather not risk this potentially valuable data to. The tape is marked: "EUNICE BSD Binary Distribution Relase # E-11575-IP. Users: UL" Hooray, unlimited license! Any takers? -j

8 years, 8 months

BBS software for the PDP 11

by lproven＠gmail.com

On 19 May 2017 at 13:36, Bill Gunshannon <bill.gunshannon at hotmail.com> wrote: > Nope. Take a trip to Amazon and look at just how much power this stuff > actually consumes. And, if you go back to the days when we started > running this stuff in our homes, compare the draw of a QBUS PDP-11 to > a TV with a picture tube, standard incandescent lights, a refridgerator, > window air conditioners, etc. Our toys draw much less power than most > people think. Heck, I have seen modern PC's (you know, the kind gamers > use) that draw more power and are frequently run 24/7. I wonder if this is one of those USA-vs-Rest-of-world differences. I think I have seen a running PDP-11 twice in my life, and it was the same one -- a machine I had to get exchanging files with Mac clients acting as terminal emulators, in about 1989 in my first job. It was already very old kit by then. I've no idea how much power they draw. Window air conditioners are another thing I've never seen, incandescent lights are now a rarity in Europe, hoarded by some old-timers -- i.e. older than me, at a hair under 50. I've never bought a new TV set with a CRT, either. In fact most of my CRT monitors over my whole home computing time period -- nearly 40y -- were cast-offs, hand-me-downs, or bought 2nd hand. I've bought a few 2nd hand LCD monitors now, because I like big ones. (Oo er missus, etc.) I'm currently running a 23" + a 24" on a 2011 Mac mini with a 1987 Apple Extended keyboard. All bought used. New kit is for suckers. So I don't look into power consumption -- used price is more important to me, TBH. Probably bad of me, but wotthehell archie wotthehell. -- Liam Proven ? Profile: https://about.me/liamproven Email: lproven at cix.co.uk ? Google Mail/Talk/Plus: lproven at gmail.com Twitter/Facebook/Flickr: lproven ? Skype/LinkedIn/AIM/Yahoo: liamproven UK: +44 7939-087884 ? ?R/WhatsApp/Telegram/Signal: +420 702 829 053

8 years, 8 months

BBS software for the PDP 11

by jnc＠mercury.lcs.mit.edu

> From: Christian Corti > I have a similar setup with our 11/34. .. It's not the fastest system, > and the kernel uses overlays like crazy ;-) ... I still have to add the > cache and FPP boards and see how that improves the performance. The cache should help some, but the FPP, probably not (unless you are running some application which actually does a lot of floating point). Noel

8 years, 8 months

BBS software for the PDP 11

by COURYHOUSE＠aol.com

we ran ours first on a hp-2000 then migrated to a hp-3000 final version had 100 boards on it email , multi user chat, poll and voting and much more. yep it kicked ass! The machines were used also as board test machines etc when needed and also some were used as sale of computer time to people tthat had developed an application and did not want to rewrite it for a pc. ... and I found they were better to just run rather than turn on and off.. but they drew power! and they generated heat. ... nothing like having a 10 platter 500 lb drive as a leg warmer next t o your desk. Ed# _www.smecc.org_ (http://www.smecc.org) In a message dated 5/18/2017 1:23:13 P.M. US Mountain Standard Time, cctalk at classiccmp.org writes: On Thu, 18 May 2017, allison via cctalk wrote: > Never forget, BBS were about storage and cheap which at that time were mostly > opposed (disks weren't cheap!). The amount of Ram and CPU were less > important > considering what had to be done. Often the modem and hard disk were as > costly > as the basic system and we didn't exceed 2400 baud till '85or later. Most > anything > could keep up with IO at under 4800 baud. > Here's what amounts to a canonnical(sp?) list of BBS programs for a number of different platforms: http://software.bbsdocumentary.com/ g. -- Proud owner of F-15C 80-0007 http://www.f15sim.com - The only one of its kind. http://www.diy-cockpits.org/coll - Go Collimated or Go Home. Some people collect things for a hobby. Geeks collect hobbies. ScarletDME - The red hot Data Management Environment A Multi-Value database for the masses, not the classes. http://scarlet.deltasoft.com - Get it _today_!

8 years, 8 months

AT&T Work Group System Voice Power voice processing boards for Unix PC 6300/7300 for sale

by sellam.ismail＠gmail.com

I have two of these available for sale. Details here: http://www.vcfed.org/forum/showthread.php?57816-AT-amp-T-Work-Group-System-… Thanks! Sellam

8 years, 8 months

BBS software for the PDP 11

by jnc＠mercury.lcs.mit.edu

> From: Chuck Guzis > Well, okay--but then let's be period-correct. The PDP-11 dates from > 1970, when, AFAIK, BBSes, if they existed, were far from what people > think they were. You're thinking of the -11/20, released in 1970. But that was only the first PDP-11 model; the -11/23 dates from 1979, and the last -11 model, the /93-/94, was released in 1990. Noel

8 years, 9 months

BBS software for the PDP 11

by tshoppa＠wmata.com

I know of several very different PDP-11 BBS's using very disparate architectures. Some were run on RT-11 or RSTS-11 entirely inside a BASIC program that managed every element of call answering, logging in, and disconnection. And others took advantage of TSX-11, RSX-11 and RSTS-11 login security and "captive accounts" that were either entirely menu-driven or had restricted command sets, with the menu options or command sets oriented strongly towards typical BBS functions. I know Billy Youdelman's TSX-11 BBS in LA was operating in the 1980's and 1990's and may have gone on longer than that. Tim N3QE

8 years, 9 months

BBS software for the PDP 11

by jnc＠mercury.lcs.mit.edu

> From: Systems Glitch > You need split I&D for 2.11BSD ISTR reading that the network code runs in Supervisor mode, so you need that to, technically (although all -11s CPUs with Supervisor also have I+D, and vice versa). Does the 2.9 include networking code? If so, it must use overlays like crazy on a 'small' machine (/40-/34/-/23)... Noel

8 years, 9 months

DCC-116 E / DATA GENERAL NOVA 2/10 / Nixdorf 620 - Restoring and restarting

by dce＠skynet.be

Hi guys ! My name is Dominique, 43 , from Belgium (I apologize in advance for my approximate English). I join this forum under the recommendations of Curious Marc. It seems there are people here who can help me to get back to life the venerable machine that I have just recovered. Some pictures of the beast : http://www.actingmachines.com/classiccmp_forum/overview01.jpg <http://www.zeltrax.com/classiccmp_forum/overview01.jpg> http://www.actingmachines.com/classiccmp_forum/terminal.jpg <http://www.zeltrax.com/classiccmp_forum/terminal.jpg> http://www.actingmachines.com/classiccmp_forum/comrack_closeup.jpg <http://www.zeltrax.com/classiccmp_forum/comrack_closeup.jpg> It is a "Nixdor 600 series" (Apparently a Nixdorf 620/35), upgraded several times until 1980, the CPU board is dated from this year. So I do not know exactly what machine it is today the equivalent. Anyway, the Nixdorf 620 is actually built by "Digital Computer Controls" and after some researches it seems that it is a "DCC-116 E", the 17 slot version of the "DCC-116" which Is a clone of the "Data General Nova 2/10". http://www.actingmachines.com/classiccmp_forum/DCC.jpg <http://www.zeltrax.com/classiccmp_forum/DCC.jpg> The machine has five Key-stations (ENTREX DATA/SCOPE), a Mag-tape Pertec 8840A - A Disk Cartridge Diablo Model 40 and a big line drum printer (Data Products model 2230), strange machine, there is a tape reader inside the printer. Here is the list of the boards I have with the references written on them and their position in the machine: *17 HEX 0 ? 15 ENTREX INC 62 00 01842 002 REV A* *16 HEX 16 30 31 ENTREX INC 62 00 01842 002 REV A** 15 OPTION 2 Empty** 14 OPTION 1 Empty** 13 PRINTER ENTREX INC SN598** 12 TAPE 556/800 BPI 2433 LFI 213** 11 TAPE 1600 BPI Empty** 10 DISK 2456 00 MP-Kontroller D44an620 6393500215 2456 7 0 1577** 09 COMMO Empty** 08 SCANNER Scanner BD 2431 NCAG 54147.1.15 2431 02394** 07 MEM 1609 0 7 02616** 06 MEM Empty** 05 MEM 1609 0 8 02367** 04 MEM 1615 01 9 5596** 03 TTY Empty** 02 DO NOT USE Empty** 01 C.P. 1509 05 4 04436* Concerning this I also ask a few questions: * What are the boards in slots 16 and 17 for? * I do not have a COM card, does that mean that I could not attempt a serial transmission (type rs232) with this actual setup ? * I have no idea how many kilobytes are present, apparently there are two core memory cards (8kb each? 16Kb each?), And non-core RAM board. I first solved a problem with the power supply of the disk pack (bad HF filter, short-circuited with the chassis, then it is also dead HF filter in the "multi-plug" of the chassis that start to burn, once these problems were solved, I cleaned the machine thoroughly, cleaning the heads of readings with isopropyl alcohol, I Not yet cleaned the disc himself which at first glance looks extremely clean, it has not left the machine for 30 years. http://www.actingmachines.com/classiccmp_forum/disckpack01.jpg <http://www.zeltrax.com/classiccmp_forum/disckpack01.jpg> I cleaned all the guides and the heads of the nine track tape Pertec 8840A. There was also a false contact in the ON-LINE button. I did a first cleanup. I think there is always a problem with the HI-DEN button used to set the magtape to 800BPI. It is currently ineffective, but I have a doubt about the contacts of the lamp socket). http://www.actingmachines.com/classiccmp_forum/ninetrack.jpg <http://www.zeltrax.com/classiccmp_forum/ninetrack.jpg> I then cleaned all the sockets and contacts at the boards of the computer (logic and PSU) http://www.actingmachines.com/classiccmp_forum/clean_contact.jpg <http://www.zeltrax.com/classiccmp_forum/clean_contact.jpg> Unfortunately, after a couple of hours, the "POWER FAIL" light has started to light up. The problem here is that I have no schematics, it is a modular power supply consisting of two elements: http://www.actingmachines.com/classiccmp_forum/psus.jpg <http://www.zeltrax.com/classiccmp_forum/psus.jpg> One seems to be dedicated to the 15 VDC regulated, the second module is in charge of the regulated 5VDC. Both elements have a "Power fail module". When the machine is completely populated I now observe that the + 5VDC collapses at +1,9VDC. Here what I measured out, you will also see what the boards of these power supply look like. http://www.actingmachines.com/classiccmp_forum/psu_module_1.jpg <http://www.zeltrax.com/classiccmp_forum/psu_module_1.jpg> http://www.actingmachines.com/classiccmp_forum/psu_module_2.jpg <http://www.zeltrax.com/classiccmp_forum/psu_module_2.jpg> Another thing I noted during my measurements, where I should (I think) measure 15V, I have 18V, looking at the documentation on the NOVA 2 (4 slots), I observed according to the diagrams below That there is 18V but before a zener diode and not at the level of connectors where there must be 15VDC, should I warn me ? Would the diode be dead ? I tried to join temporarily a secondary regulated power supply to reinforce the + 5VDC so as to be sure that the problem did not come from the logical part of the computer which checks these voltages and triggers the Power Fail status. By coupling this external regulated power supply, the computer restarts again, thus it is definitively the power supply (or the comparator component(s) of the power fail module) If I removes all the boards (printer, core memory, scanner, disk controller, etc.), the Power Fail light eventually goes out, I get again the 5VDC, so the power has become "too weak" to power the computer when it is fully populated. Despite the temporary (and dangerous) look of my assembly with secondary power supply, I could not stop myself and attempt a boot procedure via the Cold Start button of the machine from the Disk Pack, and it works! :-) http://www.zeltrax.com/classiccmp_forum/first_boot.jpg It seems that I still have problems with the magtape, I had errors trying to read a backup, but it may be simply because I still cannot get the machine in 800BPI because of the capricious buttons of the front panel. I also wrote a tape mark via a "WRITE TAPE MARK AND REWIND" function, the mark seems to be written but does not do the Rewind, however if I launch a REWIND only function, it executes the action appropriately. In short, still things to investigate on this side. Notes that the Operating system I used to make these tests is a very limited OS named DIDOS which was distributed by Nixdorf for his 620 Serie. As the machine is a clone of DG NOVA 2/10, I wonder if the computer is compatible with programs for the NOVA series of Data General? So I wonder if the DCC-116 was compatible with the software for NOVAs? The other questions I ask myself at this point are the ways to transfer softwares or bootable OS on this machine? I have no other disk pack on another system but I have a nine track tape TU81 + connected to a VAX 4000-605A under OpenVMS 6.2, and I can put this computer on my network. Do you think there's a way to make a bootable tape for my NOVA 2 clone with the Pertec 8840A from a VAX 4000 with a TU81+ ? Well, to continue, I have to repair this PSU, all information is welcome, schematics would be ideal of course. Finally, note that I am not a professional electronics technician, I fixed a lot of machines basic knowledge, intuition, researches, comparisons and logic, it is effective but full of limitations too, so forgive me in advance If I do not always understand the possible answers of electronics in "high engineering" mode ;-) As a bonus, the V1 of a small video mounted with a few clips captured during a session of my nocturnal repairs, during the first boot of the machine since 3 decades ! (on my music, yes, I'm also a composer ;-) ) https://youtu.be/5jWOUtLKRIU Thanks a lot to all in advance ;-) Dominique

8 years, 9 months

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test-drb