test-drb May 2013

test-drb@ccmp.vtda.org

213 participants
253 discussions

by fraveydank＠gmail.com

The long saga of making my recent KA655 acquisition work continues! It's been mostly smooth sailing since I got a decent Plextor drive, but there's one persistent problem. Under VMS 7.3, after a longish period of inactivity (I've seen it after a few hours, but I've not been able to narrow it down beyond that), it seems to just kind of go out to lunch. VMS is still *running*... if I have a Telnet session running MONITOR, the clock will still update and the activity meters still move (a little; they show very little activity, but that's expected since there's not a lot going on on the machine yet). But if I terminate MONITOR (it responds interactively to ctrl-C, etc) and try to run anything else (say, HELP), it stops responding. Other terminals are totally unresponsive. If I try to open a Telnet session, TCP connects but no other traffic happens. This also happens if I turn TCP/IP off. I'm running with 16 MB RAM, which should be enough for a machine that's not really running much yet, and if I were having memory issues I would expect things like existing MONITOR sessions to have serious problems. The only other correlation I can think of is that this seems to happen most when I've just installed a layered product, so it could have something to do with the CD still being mounted. On the other hand, I tend to leave the machine alone and unattended for long periods of time for product installs, so correlation is necessarily not very trustworthy here. I can still issue a break from the terminal and boot again >from the console firmware, so that still seems fine. If anyone has any idea what might be going on here, I'm all ears. - Dave

11 years

Airplane cockpit instruments, DEC PDP peripherals and other old computers on ebay, near Munich

by joerg.sigle＠jsigle.com

Hey guys. Here are some DEC drives, among other things. Obviously someone who selected interesting hardware and stored it rather carefully. I was considering the Apollo or even the Technostar, but it would be an effort for me just to get there. If anybody is closer or very interested, tell me, so I may not bid. The seller (acting on behalf of owner) wrote he gave the PDPs "in good hands :-)" (his own?), but his prices are not so low, and he says he is considering 350 EUR for 8 apollos with only one Monitor, two keyboads, mice, unknown condition, long storage... Just wanted to point you to the auctions, just in case. ebay auctions: 251267118551 251270611957 251268195362 251270185222 PDP RL02, some RL06 and 07 have apparently already ended. etc. pp. (Please look for other auctions of this seller, included completed ones.) I think it would definitely be very sad to let these machines go to scrap - would anybody second that? :-) Kind regards, Joerg

11 years

Downsizing - many systems available

by dave13＠dunfield.com

>> The collection can be seen at: www.classiccmp.org/dunfield >> >> [Keep trying if it says "service unavailable" - the classiccmp >> server seems to be having problems lately] >> >Most of the picture links appear broken. :( The links are not broken. The classiccmp server is broken. The photos don't work because you browser cannot access them - try enough times and you will usually see them (or go nuts trying). It's not just my site - the entire classiccmp server is having problems and has been for quite some time. Most of you don't see it because you access cctalk/tech via email, which gets done "in good old time", however I am not actively subscribed to the list any more (too mucn traffic), so I read the list via the web archives - depending on the time of day and phase of the moon, this can be damn near impossible. Many days I just give up. Makes the site pretty useless I agree - If anyone can provide a better host for the site I'm very interested, but for now I just don't have another place to put that much material - the alternative is probably going to be just taking it down as it really hasn't worked properly in weeks. Dave -- dave13 (at) Dave Dunfield dunfield System/Firmware development services: www.dunfield.com (dot) com Classic computers: http://www.classiccmp.org/dunfield

11 years

ios IBM 5170 hard disk with 47 user

by enrico.lazzerini＠email.it

I'm trying to install a hard drive IBM H3256-A3 (manual here <http://www.hgst.com/tech/techlib.nsf/techdocs/7BF937434F9F7BBC86256E9000734 60D/$file/oem3fspe.pdf> http://www.hgst.com/tech/techlib.nsf...e/oem3fspe.pdf ) in an IBM AT 286. I state that the motherboard 286 type 1 with a controller AB-862G SUPER MULTI I/O CARD and a pair of drive performs the correct boot of the dos 4.0 (with no hard disk connected and configured), and that the alone hard drive works and has been perfectly formatted in dos way on another P3 machine. I replaced the original U27 and U47 with the bios BIOS_5170_30APR89_AMI_D286-1277-043089-K0 (downloaded the AMI BIOS FOR 5170 at the bottom of this page <http://www.minuszerodegrees.net/bios/bios.htm> http://www.minuszerodegrees.net/bios/bios.htm) to have the option 47 user disk. Following the instructions given in the manual of the hard disk IBM H3256-A3 fields to be filled in bios are: cyl = 872, heads = 16, Wpcom = 65535, Lzone = 0, sect / trk = 36, obtaining a total capacity of 245.205 MB (=872x16x36x512/1048576). After turning on the machine, however, it stops and it does not proceed either boot from a floppy or even the keyboard responds any more. Instead without hard drive connected and / or configured the machine works perfectly. Thanks for any useful suggestion. Enrico

11 years

Multicians wonder what terminal this might be

by jws＠jwsss.com

Tom Vanvleck posted this question about a terminal. I would have just sent it to Richard, but figured someone else might recognize it also. I got mail from someone asking about a terminal he had salvaged. I added the photo to the "photos" section of the gorup: http://groups.yahoo.com/group/multicians/photos/album/1199215560/pic/list If you are not a member of that group, I put the photo here: https://www.dropbox.com/lightbox/home/Public/multicians-photo It appears to be a VIP terminal.. he wrote The only thing I've found on Google that remotely resembles it, is in a Multics brochure from 1977, page 4: http://archive.computerhistory.org/resources/text/Honeywell/Honeywell.Level…

11 years

Speaking of FPGAs...

by legalize＠xmission.com

This looks like an easy way to get started. <http://papilio.cc/index.php?n=Papilio.LogicStartMegaWing> <http://papilio.cc/uploads/Papilio/IntroToSpartanFPGABook.pdf> -- "The Direct3D Graphics Pipeline" free book <http://tinyurl.com/d3d-pipeline> The Computer Graphics Museum <http://computergraphicsmuseum.org> The Terminals Wiki <http://terminals.classiccmp.org> Legalize Adulthood! (my blog) <http://legalizeadulthood.wordpress.com>

11 years

Box of old books

by db＠db.net

I've put together a small box of old TTL books, computer references of all sorts that I simply do not want anymore. If someone really wants to collect old databooks instead of me sending this stuff out to pulp let me know. It would be easiest if someone local to me here in Ottawa could deal with it. The other alternative is for me to get it moved to Toronto for someone else to deal with it. - Diane -- - db at FreeBSD.org db at db.net http://www.db.net/~db

11 years

Apple IIe keyboard switches

by jules.richardson99＠gmail.com

I acquired an Apple IIe at the dump the other day (and a pair of IIgs machines, sans keyboards/mice - more on those later, probably). Something heavy has been dropped on the keyboard - there's no damage to the keytops (amazingly), but the keyboard PCB is cracked and the frame mounting points bent, and in testing switches around the damaged area I've found that the '=' key is permanently shorted (I assume it took the brunt of the impact from whatever-it-was, unless the switches in these machines are prone to decay and subsequent shorting). Anyway, is it just a case of desoldering the switch and prying it out of the metal frame, or is there more to it than that? I did try a little careful coaxing and it didn't want to move, but I don't want to try more force if it's the wrong approach. cheers Jules

11 years

RRD50 Cable documentation

by rick＠rickmurphy.net

I'm in the process of trying to resurrect a MicroVAX-II system. I have a RRD50 cd reader and the associated KRQ50 controller. What I'm missing is the cable between the cabinet kit and the drive. I've tried various incantations, including a AUI cable (DA15 to DA15) and what I think is a straight-through cable. I also hooked the cabinet kit DA15M direct to the drive with no success. In most cases the drive spins up but when I try to boot it, the red error LED on the drive blinks then it spins down. So, I've got to build a cable. Does anyone have documentation of the pinout of what I need to build? Thanks, -Rick

11 years

intel mds225 for sale

by tdk.knight＠gmail.com

one of the guys at my hackerspace has a intel mds 225 its power up to diag mode when the board is pulled from the back plane but when inserted the screen goes all fuzzed and crazy never been able to trouble shoot it gone over it with a meter pulled all cables boards out put them back in has pile of software and manuals and drawings to go with it and a prom rom programer reader and a another device of some sort http://www.flickr.com/photos/1ajs/6171038488/lightbox/ funds going to supporting a community hackerspace. if i was not broke i would just buy it myself to add to pegcity bits i can get a video of it powering up if anyone wants to see make offers o its located in winnipeg canada

11 years

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test-drb May 2013