- test-drb@ccmp.vtda.org - classiccmp.org

MicroPdp-11 H7864 power supply question.

by julianskidmore＠yahoo.com

Hi folks, I have a H7864 PSU for a pdp11 (Rev C1 or Rev-12) which blew up last friday. A friend and I found out that the only thing that had gone wrong was that a 0.47uF X2 Cap had failed, so I bought a replacement and I've soldered it on now. So, maybe the PSU will work! However, there's an internal lead called J11 with a funny socket on the end: It looks like this (if you view in fixed point) [Side view] [Front view] [Plugs into ] [Which looks like on the outside of the casing] +------+ _____ | : : | / 230 \ _____ | : : | > < __/\ | " " | | : : | \_____/ =======| / ------- +------+ \_/ \###/ The far end of the lead connects to a PCB where it says "+Fan 1-" Now I think that when I dismantled the PSU I unplugged it from the bottom two prongs of a 6 pronged plug of which the other side displays "230" through a glass panel on the outside of the casing. There are connections and a resistor across the other 4 prongs of that plug. I figure that the the 6-pronged plug is for selecting the mains voltage, which in my case is 230-250v as I'm in Europe, but what are the bottom two prongs for - how could they power the fan? I was pretty sure I needed to plug J11 in - and this is the only place I could find and it's a tight fit! However, when I dismantled the PSU for my microVax II I found that J11 isn't plugged in at all! So, I'm not sure what the correct connections are. My choices are: 1. It doesn't matter if it's plugged in or not (unlikely, since fan cooling is important). 2. It should be plugged in on the pdp11 AND the microVax, so I should plug it in on the MicroVax II too. It'll only go in one way, it'll collide with the PCB with the 0.47uF X1 cap if I try it upside down. 3. It shouldn't be plugged in either of the machines and so the microVax is correct and the pdp11 is wrong. 4. It should be plugged in the pdp11, but not the microVax. Note: the MicroVax has a later power supply, Rev E1 >from 1983. Sorry to be pedantic about all the connections, but advice would be helpful! -cheers from julz @P __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

18 years, 4 months

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INL0397-1

by eberhard.hewicker＠t-online.de

Hi Randy, I have come across your below posting. Can you offer INL0397-1 for a favourable price? I would need 20 ea. Can you offer TIL308 or TIL309? Mit freundlichem Gru? Eberhard Hewicker Obere Waldstra?e 3 56424 Mogendorf Deutschland Subject: replacement for TIL311 display From: cctech (at) classiccmp.org (Randy Gill) Message-id: <012701c30e56$5b3a4e70$c302010a (at) innocor.com> Date: 2003-01-03 17:00:23 _____ Hello; I just noticed your e-mail on the web. I wanted to inform you that Innocor manufactures a direct, drop-in replacement for the TIL311 (INL0397-1) featuring less power, brighter LEDs, lower cost and higher reliability. Pls find the link to our datasheet. If you have any requirements, pls let me know. Regards; Randy <http://www.innocor.com/documents/inl0397_v2_iss2.pdf> http://www.innocor.com/documents/inl0397_v2_iss2.pdf

18 years, 4 months

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OK, now this is impossible (11/23+ and RL02-RLV12 problem)

by tiggerlasv＠aim.com

Equally annoying -- I've had that problem before, but it was so long ago, I can't remember what the problem was. I have some suggestions. They are admittedly shots-in-the-dark. Some may not even seem logical, based on your symptoms, but it can't hurt to try them. . . Physically disconnect all but one drive. Make that unit "Drive 0", and try booting. (Don't forget to move your terminator over.) If it still gives you the problem, change out the drive select cap, and make it drive 1. Try again. Make sure all of the other drives are powered down and disconnected during the attempt. I seem to remember having either XXDP or RT11 wig-out, because of some quirk with the number of drives attached to the controller, and/or something flaky with the drive select caps. I also had some problem with boot errors when I had two adjacent drives in the rack. It turns out, I had the boot drive positioned half-way out of the rack on the sliders, and it was picking up noise from the drive above or below it.) I'd try "rolling your own" pack with SIMH, and VTServer. Boot XXDP under SIMH using 11/23 emulation with 512K, and make a new XXDP disk on an emulated RL02 pack. Then try transferring it to a blank RL02 with VTServer. NOTE: VTserver will blindly write to the disk, and completely ignores any BAD SECTOR information on the existing pack. So, if you're using a pack with bad spots, it's going to write data over the bad areas, and you'll wind up with an unreliable pack. I hope this helps. . . . T

18 years, 4 months

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Some information on Micron Optic Rams

by nanoman＠stny.rr.com

Jane, If you are interested. As a student (several decades ago) I developed several 64K and 512K DRAM cameras. I used TI and Intel DRAMs (at the time I was unaware of the Micron opticRAM). In its day, I thought this was pretty cool. The DRAM was attached via tether to my computer and I varied the refresh rate to get gray scale. Assembly language is a beautiful thing (or a nightmare). Of course the real trick was to remove the ceramic package lid and polyimide protective "goop" to reveal the chip die imaging surface (without damaging the die). Anyway, I have attached the covers of Mircro IS32 and IS256 information that I readily found. I believe I may still have the MicronEye Camera and Manual, as well as other information. If you would like copies of this information let me know. I will be out of town for a week or so (and I will have to recall where I have stuff the other information). Why are you interested in the OpticRam? Enjoy, Jim

18 years, 4 months

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Seeking Xceed Color30 card

by dgriffi＠cs.csubak.edu

I'm trying to find a Micron Xceed Color30 card and Greyscale30 card for a Mac SE/30. What I'm trying to do is enable 8-bit greyscale on the internal monitor. I've seen brief references to a clone of this sort of thing, but nothing more. -- David Griffith dgriffi at cs.csubak.edu

18 years, 4 months

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Safety precautions. Was: Help with ICL power supply faul

by roger.holmes＠microspot.co.uk

On 11 Apr, 2008, at 18:00, cctalk-request at classiccmp.org wrote: > > Message: 12 > Date: Fri, 11 Apr 2008 09:31:49 -0700 > From: "Chuck Guzis" <cclist at sydex.com> > > Those with big iron with high-current line-side requirements are > advised to use the "one hand in a rear pocket" technique when poking > around in a PSU. Good idea, thanks for that. Last time I poked around in one of my 1301's PSUs it was seven feet up in the air and I jiggled the stabiliser rack and the -22.6v, quarter inch bus bar touched the frame, showering me with sparks and burning a notch into the angle iron frame :-) Its not just AC that's dangerous on big iron. Over the years I've been bitten many times by 240v and no ill effects but I get very careful when near the three phase 440v supply, or near car H.T. leads or any thermionic valves, especially CRTs. Roger Holmes.

18 years, 4 months

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IS32 Optic RAM Datasheet and Steve Ciarcia's Micro D-CAM Artical

by rdawson16＠hotmail.com

Thanks Dave! What a trip down memory lane (pun intended) I worked for Micron in the Imaging Group until July, when the whole camera / cell phone market had a meltdown. The imaging group was spun off as a separate company, and we were to move from Boise Idaho to San Jose. Needles to say, most of us in my group that built new silicon test probe and DUT cards left. Like sure, are you going to double our salary to afford to live in San Jose? And leave beautiful Idaho? Micron Imaging is now Aptina: http://www.aptina.com/ You might get to see our last project filming the athletes at the Beijing Olympics. We built a ultra high resolution imager as a technology demo, Ultra HD resolution, 16x HD, 4k x 4k resolution. Its also very high framerate, 1K frames per second. I did the data pipes to stream the video off of the part, 16 750MHz LVDS differential pairs.... Randy > From: dave06a at dunfield.com > To: cctalk at classiccmp.org > Date: Fri, 11 Apr 2008 07:47:00 -0500 > CC: jwallis at fbiacademy.edu > Subject: Re: IS32 Optic RAM Datasheet and Steve Ciarcia's Micro D-CAM Artical > > > Mr. Dunfield, > > > > In a 2004 posting you indicated that you had a copy of the Micron Technology IS32 OpticRAM data > > sheet. Have you ever scanned the document? Would it be possible to obtain a copy? > > > > Your assistance would be appreciated. > > Jane Wallis > > I have placed the IS32 and Micro D-CAM articals at: > > http://www.dunfield.com/pub/index.htm > > I will leave them there for a few days - please download asap. > > -- > dave06a (at) Dave Dunfield > dunfield (dot) Firmware development services & tools: www.dunfield.com > com Collector of vintage computing equipment: > http://www.classiccmp.org/dunfield/index.html _________________________________________________________________ Get in touch in an instant. Get Windows Live Messenger now. http://www.windowslive.com/messenger/overview.html?ocid=TXT_TAGLM_WL_Refres…

18 years, 4 months

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Help with ICL power supply fault (Farnell SMPS)

by cclist＠sydex.com

On 11 Apr 2008 at 2:53, Tony wrote > The right way to do it, of course, is to use an isolating transformer, but > not everybody has one of those in the workshop. This is something that anyone who owns a screwdriver and a soldering iron should have if one intends to go poking around in the "guts" of powered equipment. Fortunately, it's easy for us in the US and Canada (and Japan) where mains power is 120v. Just about anything with a transformer in the PSU (still pretty common in audiophile gear, as are large electrolytics) has been constructed with a "universal" 100/120/220/240 transformer, meaning that there's usually a split primary, so one primary winding can be used as input and other, as output. (the other windings can be left NC). Those in 220/240 volt-land can use two transformers of the same secondary voltage connected back-to-back as an isolation method. Another option is to scavenge a transformer from a UPS--it's very common that the same transformer is used to charge the batteries and as an inverter output, meaning that there are often two sets of line- voltage windings present. I have a box with a large scavenged UPS transformer and a Variac for my workbench--and its own 5 amp fuse. Not only do I get isolation, but I can adjust the output voltage--and I don't have to rely on tripping the 20A distribution panel breaker when something goes wrong. This is particularly important with some of the old hobbyist gear-- IIRC, the MITS Altair ran a couple of bare PCB traces at line voltage to the front-panel power switch. Those with big iron with high-current line-side requirements are advised to use the "one hand in a rear pocket" technique when poking around in a PSU. Cheers, Chuck

18 years, 4 months

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Fwd: [roys-tech-chat] Building replacement for TTL counter DM8552 (National Semiconductor)

by rtellason＠verizon.net

Have any of you guys ever heard of this chip? It's new to me... ---------- Forwarded Message ---------- Subject: [roys-tech-chat] Building replacement for TTL counter DM8552 (National Semiconductor) Date: Thursday 10 April 2008 08:58 From: "Michel" <itloiiw at yahoo.com> To: roys-tech-chat at yahoogroups.com Hello all, I am trying to repair a Systron Donner Frequency Counter model 6254 that does not count well. This counter is build with "simple" TTL chips only. (I have no manual nor schematic). The culprit (found by swapping chips) is a TTL chip from NS : DM8552 It is a decade counter with latches and tri-state outputs. Since I did not find any source for replacement chip, I have thought to build some equivalent circuit with maybe 74LS160 and 74LS393. My problem is that I have no datasheet except pinout for DM8552 (found there http://www.datasheetarchive.com/pdf/1215336.pdf ). Does anybody have more information about it ? Many thanks in advance, Michel Grenoble - France. ------------------------------------ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/roys-tech-chat/ ------------------------------------------------------- -- Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this section of space, ?a critter that can be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters" - Information is more dangerous than cannon to a society ruled by lies. --James M Dakin

18 years, 4 months

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eric's read9144 program

by aek＠bitsavers.org

here http://svn.brouhaha.com/viewvc/read9144/ There is a known problem with it dealing with HP backup tapes that have end of file set on the first block, but it knows how to talk CS80 through the linux library.

18 years, 4 months

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PC <-> HPIB <-> CS80 stuff ; was HP-IB drive simulator

by aek＠bitsavers.org

> I also took another look at the Linux-HPIB project and > see that it has been rekindled. Unfortunately, I was not able to get a good > build on my system. It's probably an incompatability in the kernel... I would suggest looking at this more seriously. Eric Smith wrote a program using this to do block level reads of 914x tapes a few years ago.

18 years, 4 months

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HP-IB drive simulator

by dbetz＠xlisper.com

Has anyone invented a way to use a PC (or Linux or a Mac) to emulate an HP-IB drive for the purposes of providing mass storage to an HP85 or HP87 computer? I know such a thing exists for emulating Atari drives on a PC. Has anyone done anything similar for HP-IB?

18 years, 4 months

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Bringing up an older Mac

by dgriffi＠cs.csubak.edu

I've just brought up a Mac SE/30 with fresh disks and noticed that the monitor occasionally gets wavy or shudders. How should I proceed in fixing this? For those interested: Apple has all sorts of old stuff at http://www.info.apple.com/support/oldersoftwarelist.html You'll need the Linux version of Stuffit from ftp://ftp.allume.com/pub/archive/linux/StuffIt/stuffit520.611linux-i386.tgz. Unstuff the file you get from Apple, the Unstuff the .data file. Then make the disk like this: dd if=System\ Startup of=/dev/fd0 bs=84 skip=1 -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

18 years, 4 months

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Hitachi HN27C1024HG-85

by adamgolas＠earthlink.net

You've written me that you have HN27c1025HG-85 but I am looking for HN27c1024HG-85. If you have what I am looking for please let me know the price. Thank you, Adam Golas

18 years, 4 months

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IS32 Optic RAM Datasheet and Steve Ciarcia's Micro D-CAM Artical

by jwallis＠fbiacademy.edu

Mr. Dunfield, In a 2004 posting you indicated that you had a copy of the Micron Technology IS32 OpticRAM data sheet. Have you ever scanned the document? Would it be possible to obtain a copy? Your assistance would be appreciated. Jane Wallis

18 years, 4 months

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Help with ICL power supply fault (Farnell SMPS)

by pcoghlan+cctech＠vms.eurokom.ie

> >One way to achieve isolation is to get a couple of filament transformers that >are of similar voltage ratings and use them both, tying both low-voltage >windings together and using one primary as the output. I'd think that they >wouldn't need to be particularly hefty if you're not going to load the supply >much. > Another approach I keep meaning to try out, also for small loads, is a bathroom shaver outlet isolating transformer. Many, like the one in my junk box, also have the advantage of providing a choice of output voltages so that equipment designed for the other side of the Atlantic only can also be tested. (I last thought of this approach just after I blew the input fuse in a small SMPSU after somehow managing to confuse myself about which were the input rectifiers and which were the output rectifiers. But it was too late then so I didn't bother...) One thing that puts me off though is that I vaguely remember reading a report from someone who had a SMPSU that behaved even more bizarrely than these things usually do when it was powered through a less than ideal isolating transformer. Regards, Peter.

18 years, 4 months

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Fwd: [comp.sys.sgi.hardwar...] Power Challenge XL available

by Arno_1983＠gmx.de

Richard <legalize at xmission.com> wrote: > This message has been forwarded from Usenet. To reply to the > original author, use the email address from the forwarded message. > > Date: Wed, 9 Apr 2008 00:39:44 -0700 (PDT) > Groups: comp.sys.sgi.hardware,comp.sys.sgi.admin > From: "fischerc at itam.cas.cz" <fischerc at itam.cas.cz> > Org: http://groups.google.com > Subject: Power Challenge XL available > ======== > Hi everybody > We have a rather big piece of HW: SGI Power Challenge XL (6 x R8000 at 75 > MHz, 1G ram, a few 2-4Gb SCSI discs) available here in Prague (CZ, > EU). > The computer was cleanly shut down on May 5, 2004 and since that time > was not touched. We intend to scrap it now. If anybody wants to have > some spare parts or even the complete beast, let me know within 1-2 > months. > I regret to say, that this was the last SGI machine we have here. > > Anyway, I would like to express my thanks to the SGI admin comunity > for all the help I've received in past years. > > Sincerely yours, > Cyril F. Hey, Prague - we have relatives there! Unfortunately the machine seems to be a bit too big to fit into a Volkswagen Golf Variant, else we could have offered to rescue it on our next visit there. If somebody feels like it's road trip time for this baby and an appointment can be made, I'm volunteering as a loading and handling assistant! There are stacks of testimonials from satisfied customers ;-) So long, Arno -- Arno Kletzander Student Assistant // Studentische Hilfskraft Informatik Sammlung Erlangen www.iser.uni-erlangen.de Psst! Geheimtipp: Online Games kostenlos spielen bei den GMX Free Games! http://games.entertainment.gmx.net/de/entertainment/games/free

18 years, 4 months

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DM8552

by aek＠bitsavers.org

http://bitsavers.org/pdf/national/_dataSheets/DM8552.pdf

18 years, 4 months

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DM8552

by aek＠bitsavers.org

> Someone on the list could go to Halted, get a copy, and scan it for him. I scanned the entire data book last week. I'll see about getting it on line.

18 years, 4 months

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Compaq Portable 1 for sale - between Boise and San Diego

by tosteve＠yahoo.com

Contact Joe if interested: lather222 at hotmail.com Original Compaq Portable I for sale for $??.??. It boots to green cursor, but no floppies available to verify. Joe is in Boise Idaho, but will be DRIVING to San Diego and Los Angeles area via Las Vegas in early June. Price unknown, but around $50 probably acceptable. Contact him if interested: lather222 at hotmail.com __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

18 years, 4 months

1
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Help with ICL power supply fault (Farnell SMPS)

by john_a_s2004＠hotmail.com

Hi, I've started to setch the output circuitry, not 100% accutarely as my meter shows all the transformer windings as 0 ohm, so I have some points that measure 0 ohm to ground which may be ground or maybe a transformer output. Thanks Tony for your reply, quote below. Tony wrote: >John wrote> >> I have an ICL PC2 CP/M box (like this: >> http://www.old-computers.com/museum/computer.asp?c=752) which has a >> faulty PSU, I am hoping someone here can advise me. >> >> The PSU is a Farnell N100/F4190 SMPS, looks like a high quality unit >> with nice screw terminals for mains in and DC out. >> > When fired up with 240V AC and a dummy load the output voltages are: >> >> 12V output=1.1V >> 5V output=2.3V >> -12V output=-5.9V > >The first thing that 'bothers' me is that the 12V output is lower than >the 5V one. If this was a simple regulation fault, I'd expect all outputs >to track. > >Do you know which output the crowbar operates on (not which one triggers >it, but which one it shorts out?). Now I have some of the output circuit, I have found their is an SCR (2N6400) connected as follows: Anode - to +12V output Cathode - to ground Gate - to a resistor divider, which inturn is connected via a diode (assumed to be a zenner) to the +5V output. With the power off I have tried applying +5V to the +12V output, and this drew 250mA - ie around 20 ohm. most of this current turned out to be going through the SCR, as when I removed the SCR the current reduced to around 20mA. I think the SCR has been damaged, it is showing 80ohm between gate and cathode with the meter either way round (I think this should be a diode!). I guess the SCR must have taken the brut of the 80W or so of excess power taken by the PSU when I was testing it earlier. I'll buy a couple of replacements. > It's not uncommon for that to be >something other than the main output (simply becuase it's easier to pull >down), it's possible there's a crowbar thryistor on the 12V output, and >that that's firing. Exactly right - thanks for the tip. >I assume this thing doesn't have external sense inoputs for the main >output, or if it dows you've conencted them to said output. No sense inputs. >I think it's reasonable to asusme the chopper is working (otherwise you'd >get no outputs at all). Does it seem to be running continuously, or do >you get the 'tweet tweet tweet' of a PSU that's starting, detecting a >fault, shutting down, and repearing? > >Are tyhe otuptus steady at those votlages? I find an analogue meter best >for this, you can see the needle twitch if the PSU is starting and >shutting down. When I tested it earlier I applied power for around 5 seconds at a time, outut voltages were fairly stable. Next thing I'll look at is the feedback circuit from the +5V output via some resistors and what might be a FET into an opto-isolator to a circuit on the hot side involving a compartor, transistors, resistors and diodes. This looks fairly complicated (to me, probably a piece of cake for Tony!). Pity there isn't a nice IC controller like on the HP-85 PSU :-) Regards, John _________________________________________________________________ Get Hotmail on your mobile. Text MSN to 63463 now! http://mobile.uk.msn.com/pc/mail.aspx

18 years, 4 months

3
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Seeking Xceed Color30 card

by trag＠io.com

> Date: Thu, 10 Apr 2008 10:16:50 -0400 > From: "Curtis H. Wilbar Jr." <rescue at hawkmountain.net> > David Griffith wrote: >> I'm trying to find a Micron Xceed Color30 card and Greyscale30 card for >> a >> Mac SE/30. > If anyone finds a stash of these... count me in :-) Heh. Typically, $300 - $500 on the rare occasions when they do show up on Ebay. I want one too...but not that much. I don't remember the exact URL, but google on Gamba SE/30 to get to a page with much discussion about this card. There are also a number of threads about it in the forums at 68kmla.net (68K Macintosh Liberation Army; rescuers of old, abandoned and unwanted 68K based Macintoshes). Some other discussion at applefritter.com's forums. The book the poster on the other related thread is probably thinking about is Larry Pina's "Macintosh Repair and Upgrade Secrets", which Tony probably disapproves of. :-) Pina discusses and recommends replacement of components based on the items which, in his experience, most often lead to certain symptoms. He does not discuss doing an actual probe and diagnosis to determine the failed component, which is why I good naturedly refer to Tony's disapproval. There are a couple of later variants on the above book, such as "Macintosh II Repair and Upgrade Secrets", "Mac Classic and SE: Repair and Upgrade Secrets", etc. These sometimes go for ridiculous sums on Ebay as well, but are often available at Amazon or other used book sites for very reasonable prices. At the moment "The Dead Mac Scrolls" are starting at over $100 on Amazon, but if the past is a guide, it will show up for under $20 if you wait around a while. Jeff Walther

18 years, 4 months

2
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RL01/02 vs. RK06/07 terminators?

by mcguire＠neurotica.com

My dusty memory tells me that RL01/02 terminators are different >from RK06/07 terminators. Can anyone here confirm? Thanks, -Dave -- Dave McGuire Port Charlotte, FL

18 years, 4 months

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HP Portable Vectra CS Model 20

by charlene＠dontmissyourlife.com

Via Google, I just found a two-year-old post of yours (http://www.classiccmp.org/pipermail/cctalk/2005-December/208439.html), which was in response to a four-years'-previous post about an HP Portable Vectra. You said you collect them. Well, I just unearthed my old one from the back of a closet. Interested in buying it? I see one listed on e-Bay for $499.99 OBO. I'm certainly not looking for that much! Charlene

18 years, 4 months

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Help Wanted Picking Items from NASA

by rdawson16＠hotmail.com

Manned Maneuvering Unit, the 'rocket backpack' - the first machine man flew untethered in space. http://www.lockheedmartin.com/aboutus/history/MannedManeuveringUnit.html Randy > To: cctalk at classiccmp.org > From: legalize at xmission.com > Date: Thu, 10 Apr 2008 00:54:20 -0600 > Subject: Re: Help Wanted Picking Items from NASA > > > In article <BLU145-W335578ED914932815E5125BAEC0 at phx.gbl>, > Randy Dawson <rdawson16 at hotmail.com> writes: > > > GO PICK UP THE MMU > > For those of us not infected by TLA-itis, what's MMU? > -- > "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download > <http://www.xmission.com/~legalize/book/download/index.html> > > Legalize Adulthood! <http://blogs.xmission.com/legalize/> _________________________________________________________________ Going green? See the top 12 foods to eat organic. http://green.msn.com/galleries/photos/photos.aspx?gid=164&ocid=T003MSN51N16…

18 years, 4 months

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Help Wanted Picking Items from NASA

by jrkeys＠concentric.net

Good Day I have been given a chance to submit a wish list to NASA for artifacts for the museum I started here in Houston and wanted suggestions from the list of items you would want to see on display from NASA's past. Please email me off list or you can share your input with the list. Thanks John

18 years, 4 months

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single transistor projects?

by jhawes＠hawestv.com

Rufus Turner wrote a fabulous book on single-transistor projects. I reviewed the book for Amazon. See... http://www.amazon.com/125-One-Transistor-Projects-Rufus-Turner/dp/0830695370 You have to be careful with early transistor projects. Most of the transistors are germanium. After making circuit changes, you can build these circuits with modern, silicon parts. At minimum, the silicon transistors require changes to the bias circuits. (Sometimes, you'll need to make other changes, too.) For help with the changes, refer to my page at... http://www.hawestv.com/transistorize/germanium1.htm Equivalents to some early semiconductor types are unavailable today. (Or available only as used, or new-old stock parts). Such semiconductors include tunnel diodes, unijunction transistors and most early FETs. Redesigning circuits with these parts could be rather difficult. James T. Hawes

18 years, 4 months

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Two recent vintage computer sightings in movies

by roger.holmes＠microspot.co.uk

On 9 Apr, 2008, at 18:00, cctalk-request at classiccmp.org wrote: > > On Tue, 8 Apr 2008, Sellam Ismail wrote: > >> Right now I'm watching TV (hotel cable) and George Carlin is on >> (AWESOME!!) and in his set there's an original Macintosh (or it >> could be a >> 512 or Plus) in the background. I don't know the name of this set. >> >> Isn't someone maintaining a list of these somewhere? > > It would be an interesting (and time consuming) project. I've > done > something similar with appearances of the SAGE computer equipment: > > http://sturgeon.css.psu.edu/~mloewen/Q7/ > > Stan Brewer has a page for the Burroughs B-205 (mostly the > console), > with a list of appearances on screen: > > http://www.angelfire.com/scifi/B205/index.html Mike Milsom has a page for some of the appearances of ICT 1301 consoles: http://milsom.mysite.orange.co.uk/1301/1301f.htm We are always on the look out for more, but we already have Doctor Who, James Bond and Blake's Seven appearances.

18 years, 4 months

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Two recent vintage computer sightings in movies

by tiggerlasv＠aim.com

While it's not a movie, if you watch carefully on the Star Trek: Next Generation pilot episode "Encounter at Farpoint", you'll see what appears to be a VT100 sitting on a pedestal on the bridge. . . an interesting prop. ;-) T

18 years, 4 months

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Fwd: [comp.sys.sgi.hardwar...] Power Challenge XL available

by legalize＠xmission.com

This message has been forwarded from Usenet. To reply to the original author, use the email address from the forwarded message. Date: Wed, 9 Apr 2008 00:39:44 -0700 (PDT) Groups: comp.sys.sgi.hardware,comp.sys.sgi.admin From: "fischerc at itam.cas.cz" <fischerc at itam.cas.cz> Org: http://groups.google.com Subject: Power Challenge XL available Id: <5df4658f-99e8-43a5-b318-153140a98ba1 at k13g2000hse.googlegroups.c om> ======== Hi everybody We have a rather big piece of HW: SGI Power Challenge XL (6 x R8000 at 75 MHz, 1G ram, a few 2-4Gb SCSI discs) available here in Prague (CZ, EU). The computer was cleanly shut down on May 5, 2004 and since that time was not touched. We intend to scrap it now. If anybody wants to have some spare parts or even the complete beast, let me know within 1-2 months. I regret to say, that this was the last SGI machine we have here. Anyway, I would like to express my thanks to the SGI admin comunity for all the help I've received in past years. Sincerely yours, Cyril F.

18 years, 4 months

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HP-1000 HP-IB / GP-IB IEEE-488.2, etc

by Tim＠Rikers.org

HP-IB, GP-IB and IEEE-488.2 seem to refer to the same more-or-less compatible bus architecture. http://en.wikipedia.org/wiki/IEEE_488 I'm hoping to get GP-IB storage setup on my HP-1000 systems eventually. I've picked up: HP 59310-60101 "BUS INPUT/OUTPUT INTERFACE" - low speed GP-IB card HP-9122C - dual 3.5" GP-IB floppy drive (Thanx Stan!) However I don't have the cable to wire from one to the other. The drive has a standard IEEE-488 connector: http://en.wikipedia.org/wiki/Image:IEEE-488-Stecker2.jpg But the controller has a 50 pin card edge connector. Anyone have a spare cable? I've been looking at some GB-IB software tools: * http://www.hp9845.net/9845/projects/hpdrive/ emulates GP-IB drives on win32 * http://www.hp9845.net/9845/projects/hpdir/ read and write to some GP-IB media and filesystems from win32 * http://linux-gpib.sourceforge.net/ Linux GP-IB drivers and libraries. This does NOT include drive emulation or access, but it aimed at sensors and other devices that speak GB-IP Not all drives use the same protocol over GB-IP. Bitsavers has documents that cover the AMIGO and CS/80 command sets: * http://www.bitsavers.org/pdf/hp/disc/ Lots of drive docs including: * http://www.bitsavers.org/pdf/hp/disc/subset80_Jul83.pdf SS/80 and by reference some of CS/80 I do not currently have a GP-IB interface for a PC. The National Instruments PCI-GPIB cards seems popular on eBay. There are also USB-GPIB converters from NI and others. The ISA or SBus cards go for less, but then I need to find a machine with one of these slots. :) I understand that HP-7920 and HP-7925 drives were AMIGO flavor GP-IB drives. Perhaps the HP-7905 and HP-7906 as well? I'm not quite sure where the GP-IP buss comes in the picture. There is normally a contoller (13037-60028) interface between the drives and the host computer interface (02640-90042?) I presume that the bus on one side of the 13037 is IEEE-488 but I'm not sure which. Can the 026xx cards directly attach to GB-IP drives? How does the shared storage through a 13037 controller work? are they all just IDs on GB-IB? Any insight appreciated. Any hardware donations greatly appreciated. :) -- Tim Riker - http://Rikers.org/ - TimR at Debian.org Embedded Linux Technologist - http://eLinux.org/ BZFlag maintainer - http://BZFlag.org/ - for fun!

18 years, 4 months

5
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Polymorphic System88 disk

by cclist＠sydex.com

> Date: Tue, 8 Apr 2008 05:59:37 -0700 > From: dwight elvey Will all respect for your efforts, Dwight, at least you knew the origin of the diskette and had a faint idea of what might be on them. You haven't lived until someone shoots you a bunch of diskettes with everything being unknown--the modulation technique, the code representation, the data rate or track spacing or byte width, much less the file system. Your Polymorphics floppies sound a lot like a bunch of diskettes I got in recently from a manufacturer's in-house PCB stuffing robot. The format appears to be a "roll your own". It's hard to say which is the most fun--diskettes discovered to be GCR where you have no idea of what the group size is, nor what the groups correspond to. Or diskettes written on something like a typewriter where the code's not ASCII, nor does A immediately precede B--and you have nothing that says "this is a printout of what's on the diskette". Hint: You start with a statistical analysis of the pulse stream and go from there. For me, it's a lot of fun, ferreting out things by bits and pieces until the big picture emerges. Cheers, Chuck

18 years, 4 months

3
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The Unix Haters' Handbook

by cclist＠sydex.com

> Date: Mon, 07 Apr 2008 14:04:01 -0400 > From: Sridhar Ayengar > That's bull. There are ways to make grep output something like "No > matches" without breaking a pipeline that uses it. I suggest that > perhaps those who say "They're the kind of thing people who don't use or > understand pipes will say." are the ones who truly don't understand pipes. If anything, my issue with the evolution of *nix is that the original philosophy of "write a bunch of simple tools and hook 'em together via pipes" seems to have been deprecated in the almost 30 years since I began using Unix. There seems to be a trend of proliferating options. Quick, who can recite from memory all of the switches and their meanings for GNU tar? I can't. Who can understand the tar man pages? Who knows it to be accurate for the particular incarnation of tar that they're using? Cheers, Chuck

18 years, 4 months

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Free to a good home - IBM PS/2 stuff

by ddsnyder＠zoominternet.net

Somethings a miss here... resending... On Mon 04/ 7/08 7:36 PM , "Daniel Snyder" sent: To all, I am unloading all of my PS/2 gear, most of the systems may be too heavy to ship, but will part out. I'm out of space and my real interests have always been DEC, almost 30 years now. This is by all means not a complete list, I will continue this list as I uncover more. All has been stored indoors in a dry and heated area. 2 - Model 25's B&W (ISA) 2 - Model 30's (ISA) 1 - Model 65 tower (MCA) 1 - Model 80 tower (MCA) 1 - Model 50 desktop (MCA) memory modules, video, esdi drives, scsi drives, some good working floppies. I have most if not all of the config disks and copies on cd. I think the 80 has a worm drive and colorado/maynard? QIC tape, spare motherboards for the 50, 60, 70 and 80. Would really prefer local pickup (or relay or within 100 miles) That's all for now Dan Snyder Butler, PA 16001

18 years, 4 months

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FS: QBUS boards, 4K memory boards, Sharp PC-3000 items

by julianskidmore＠yahoo.com

Hi Ed, I've been trying to use my BA23-based microPDP11/73 recently. I got as far as installing RT11 and Fig-Forth :-) , but then the power supply blew a cap so everything has been mothballed since Friday! > DEC "A/D FOR 1103 5012094E-P2" My guess is that the A/D won't work if it's for an 11/03 > DEC "4 CHANNEL D/A A6001 5012107 DP4" But the D/A sounds interesting! > DEC "PROG REAL TIME CLOCK M7952 5012108B" As does the RTC. > DEC "M9060 5017109" load board As does the Load board - I guess that board is there to simulate loading on a PSU so you can test the PSU? Obviously I'm happy to pay for the postage, in fact is sounds like good value! -cheers from julz @P ____________________________________________________________________________________ You rock. That's why Blockbuster's offering you one month of Blockbuster Total Access, No Cost. http://tc.deals.yahoo.com/tc/blockbuster/text5.com

18 years, 4 months

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Help with ICL power supply fault (Farnell SMPS)

by RodSmallwood＠mail.ediconsulting.co.uk

I can't be of much help re PSU . However I do know the machine. RAIR were a customer of mine and I saw the first one ever built. RAIR was run by two guy's called Mark Potts and David Fogden. Mark went to the States and I have no idea what happened to Dave. Rod -----Original Message----- From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org] On Behalf Of John S Sent: 08 April 2008 12:22 To: cctalk at classiccmp.org Subject: Help with ICL power supply fault (Farnell SMPS) Hi, I have an ICL PC2 CP/M box (like this: http://www.old-computers.com/museum/computer.asp?c=752) which has a faulty PSU, I am hoping someone here can advise me. The PSU is a Farnell N100/F4190 SMPS, looks like a high quality unit with nice screw terminals for mains in and DC out. When fired up with 240V AC and a dummy load the output voltages are: 12V output=1.1V 5V output=2.3V -12V output=-5.9V The other worrying thing is it is also drawing 100W power (measured with a one of those plug in mains meters from Maplin), whilst the dummy load is around 20W (split between +12V and +5V). I've checked all the capacitors with multimeter and ESR meter, and all seem fine, and none are bulging or obviously overheating, DC resistance on each of the output connections to ground is around 60 ohm. I couldn't find a short so I don't know where all the power is going to, I suspect there is some protection circuit kicking in? I don't have a circuit diagram, so my first plea does any one have one please? The circuit has few ICs, and mostly transistors. There is a CA339E quad comparator chip, and a IL201 opto isolator (I'll try and check these), but no nice single IC controller. My current strategy is to apply +5V to the comparator chip and apply voltages to the output to try and see some feedback, and also apply 50V DC to the input in the hope this is enough to start up the oscillator (I think this is a small group of transistors, resistors and small capacitors near a small torial transformer, which then feeds to the main conversion transformer). Any suggestions gratefully received, Thanks, John _________________________________________________________________ Get Hotmail on your mobile. Text MSN to 63463 now! http://mobile.uk.msn.com/pc/mail.aspx

18 years, 4 months

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HP-21xx assembly

by Tim＠Rikers.org

Is there a pdf version of jeff's asmref.html? mirror: http://rikers.org/hp2100/jeff/asmref/index.html with some edits: http://rikers.org/hp2100/asmref.html I've been fixing obvious errors, but I'm not sure if the errors were >from OCR or in the original. Also I don't have the diagrams in there >from the original docs. I'm looking for docs on the REL tape format(s) to add support to asm21.pl The relocatable library docs don't seem to cover the tape format itself, just the calling convention etc. http://bitsavers.org/pdf/hp/21xx/02116-91780_RelocatableSubroutines_Oct1973… Pointers appreciated. :) -- Tim Riker - http://Rikers.org/ - TimR at Debian.org Embedded Linux Technologist - http://eLinux.org/ BZFlag maintainer - http://BZFlag.org/ - for fun!

18 years, 4 months

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Sun keyboards available

by mcguire＠neurotica.com

A friend in Maryland has 13 (yes thirteen) Sun type 5 keyboards that need to find a new home. He is asking $10 plus the cost of DHL ground shipping for the lot. He needs them gone by Thursday 4/10 or they'll hit the trash. Email me for his contact information. -Dave -- Dave McGuire Port Charlotte, FL

18 years, 4 months

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VCF/Midwest - Just 3 weeks away

by pat＠computer-refuge.org

In case you hadn't noticed yet, this year's Midwest VCF is just under 3 weeks away - April 26 and 27. We still are working on getting exhibitors and speakers for the event - drop me a line if you're interested in either. Sign up to exhibit soon! Vince Briel will be at the event this year, doing a Micro-KIM and Replica One workshop. More details at: http://www.vintage.org/2008/midwest/ Pat -- Purdue University Research Computing --- http://www.rcac.purdue.edu/ The Computer Refuge --- http://computer-refuge.org

18 years, 4 months

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VT14 engr drws

by aek＠bitsavers.org

they are part of the GT40 drawing set http://bitsavers.org/pdf/dec/graphics/GT40_EngrDrws.pdf

18 years, 4 months

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VR14 Engineering Drawings?

by ohh＠panix.com

Hey, all: Does somebody out there know of a set of DEC VR14 engineering drawings they could point me to online? Thanks! -O.-

18 years, 4 months

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advent sources?

by bqt＠softjar.se

"Zane H. Healy" <healyzh at aracnet.com> skrev: >> trolling through some old mit backups... >> >> I found a copy of "advent" fortran source from 1979. Is that interesting >> to anyone? It looks more complex than the Crowther sources but I have >> no idea. >> >> I also found a file with PDP-6 Space war sources. Anyone interested? >> It mentions a "340" display. It's an ITS "ar" file which I think would >> be easy to pull apart back into ascii files. >> >> -brad > > Any chance of a copy of DND in there? Especially for RSTS/E or RT-11? I'm > aware of what is at http://members.tripod.com/~rancourt/default.htm I have atleast ADVENT compiled and running under RSX. Should work fine under RSTS/E as well. Just check on MIM::SYS$GAMES: 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

18 years, 4 months

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RSX-11M sysgen

by mcguire＠neurotica.com

Hey folks. Super dumb question here. I'm trying to run a sysgen of RSX-11M v4.2, and when I try to boot the new executive at the end of the sysgen run, it drops into XDT saying "MISSING EXECUTIVE COMMON (S)". I've run through it three times, and I've made absolutely certain that I've said "Y" to the "Executive Common" question (#6 under Executive Options). The most annoying thing about this is that I'm sure I ran into this the last time I did an RSX-11M sysgen, in 1986, and solved it...but for the life of me I can't figure it out this time. Can anyone shed some light on this? Thanks, -Dave -- Dave McGuire Port Charlotte, FL

18 years, 4 months

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cctalk Digest, Vol 56, Issue 8

by cclist＠sydex.com

On 7 Apr 2008 at 12:00, cctalk-request at classiccmp.org wrote: > Date: Sun, 6 Apr 2008 14:45:24 -0400 > From: "James Fogg" > It might be easier to go to a metal shop, autobody shop or > Heating/Ventilating/Air Conditioning shop. Any shop like that can make > panels to your exact size in a few minutes (aluminum works best). You can > have a body shop paint them (wait until they are spraying your color > anyways or it gets expensive) or you can use spray paint cans. Any music store dealing with pro road gear will have tons of 19" rack accessories, including blank panels. They also carry the hard-to- find cage nuts, trays, fans, ventilation panels, etc. etc. Cheers, Chuck

18 years, 4 months

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WTD: Sun 501-1443 framebuffer?

by silvercreekvalley＠yahoo.com

Hi, Looking for a 501-1443 or similar framebuffer to fit a Sun 3/80. This uses the P4 bus. Its not the same as a 3/60 cg4 framebuffer unfortunately - I think the main difference is the position of the video sockets, but there may be others... Good price paid, or can trade for other items (Sun or DEC). Cheers Ian. ____________________________________________________________________________________ You rock. That's why Blockbuster's offering you one month of Blockbuster Total Access, No Cost. http://tc.deals.yahoo.com/tc/blockbuster/text5.com

18 years, 4 months

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PDP 11 owners in Canberra, Australia

by doug＠stillhq.com

It is now official... Having now got my RL01 drive in my PDP-11/34 to seek, and read a sector full of zeros, I would love to know if there are any PDP 11 users in Canberra, who would be able to load up a bootable RT11 image onto a RL01 disk pack. Heck, anybody within a couple of hundred km would also be cool.. Having known data on a disk pack would be very handy. Thanks, Doug

18 years, 4 months

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19" rack blanking panels

by James＠jdfogg.com

> Looking for various parts to complete a 19" rack > of various vintage servers :) In particular I'd > like to get some blanking plates (any size) in > black if possible, cable tidies, and empty 1U/2U > or larger server boxes. > > Anything considered - I'm in the UK It might be easier to go to a metal shop, autobody shop or Heating/Ventilating/Air Conditioning shop. Any shop like that can make panels to your exact size in a few minutes (aluminum works best). You can have a body shop paint them (wait until they are spraying your color anyways or it gets expensive) or you can use spray paint cans.

18 years, 4 months

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FS: QBUS boards, 4K memory boards, Sharp PC-3000 items

by listmailgoeshere＠gmail.com

Hi list, I have the following for sale: 1) 4 * QBUS board: DEC "A/D FOR 1103 5012094E-P2" DEC "4 CHANNEL D/A A6001 5012107 DP4" DEC "PROG REAL TIME CLOCK M7952 5012108B" DEC "M9060 5017109" load board 2) 2 boards marked "4K MEMORY BOARD FOR 118 NICOLET INSTRUMENT CORP 000-7488-04 10/14/75" Each one contains 40 ICs marked "TMS 4060JL BP7901" and then 15 chips' worth of 74-series logic. One of these boards seems to have been used for spares or something, as it's missing all its resistors, capacitors and one of the TTL ICs. The connector on these is an 86-way 0.1" edge connector. 3) The original box and manual, plus original Sharp (still boxed) Laplink cable, for a Sharp PC-3000. There is a PC-3000 *in* the box, and you can have that too, but it's got a smashed screen. Probably still works other than that, no promises though. There's also the (likely unobtainium these days) adaptor from the PC-3000's mini-serial port to an actual DE9 connector. Please make an offer by private mail if you want any of this. I'll ship anywhere, but you pay the shipping. Items are located in West Yorkshire, UK. Ed.

18 years, 4 months

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19" rack blanking panels

by silvercreekvalley＠yahoo.com

Hi Austin, That would be great. Thanks. The blanking panels and other 19" rack bits seem quite pricey, especially if you need a lot of them which you typically do when building up a rack. All the best Ian. ____________________________________________________________________________________ You rock. That's why Blockbuster's offering you one month of Blockbuster Total Access, No Cost. http://tc.deals.yahoo.com/tc/blockbuster/text5.com

18 years, 4 months

1
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19" rack blanking panels

by silvercreekvalley＠yahoo.com

Hi, Looking for various parts to complete a 19" rack of various vintage servers :) In particular I'd like to get some blanking plates (any size) in black if possible, cable tidies, and empty 1U/2U or larger server boxes. Anything considered - I'm in the UK Many thanks Ian. ____________________________________________________________________________________ You rock. That's why Blockbuster's offering you one month of Blockbuster Total Access, No Cost. http://tc.deals.yahoo.com/tc/blockbuster/text5.com

18 years, 4 months

2
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WANTED: Victor 9000 keyboard

by tosteve＠yahoo.com

I received a Victor 9000 with monitor and lots of software, but no keyboard. If someone has one to spare, I'd appreciate it! Now, what can I do with all of these extra software copies? Steve. --------------------------------- You rock. That's why Blockbuster's offering you one month of Blockbuster Total Access, No Cost.

18 years, 4 months

1
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PDP-8 "Dumprest" experience?

by hachti＠hachti.de

Hi folks, I am just beginning to use Dave Gesswein's DumpRest from ftp://ftp.pdp8online.com/software/dumprest/. I successfully restored TD8-E DECtapes with it. That enabled me to install OS/8 on RK05 etc. I also (roughly) integrated the dumprest utilities into OS/8 (I can start them and they reboot OS/8 back to the monitor). And they now use a separate high speed rs232 port to connect to my PC (as my kermit does). When I use restrk05, I always get a checksum error. I just have read one RK05 disk - three times. What I get is always the same checksum error printout with the same checksum. And the generated files are identical as well. I can also successfully run them in SIMH. So what's wrong? Does anybody has a clue? Is that a known problem? Best wishes, Philipp :-)

18 years, 4 months

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HPIB Tape Drive Interface Protocol

by steerex＠ccvn.com

Hey, I have an ancient copy of the HPIB protocol specifications for 1/2 tape drives. I was going to send it to bitsavers for archival and re-distribution but, due to the number of errors and unreadability of the doc, I decided to go ahead and make the obvious editorial changes. I have placed a HTML version of the first draft at: http://www.steerex.com/hpib/7980_protocol At this time, there are a couple of sub-sections that are still missing. I'll add them in the coming days. I'll also be adding meaningful content, programming examples, tutorials, and HPIB pointers in the near future. Hope someone finds this stuff useful. See ya, Steve Robertson steerex [at] ccvn [dot] com

18 years, 4 months

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Looking for specific PDP-8 MAINDECs

by hachti＠hachti.de

Hi Folks, I have recently indexed my collection of PDP-8 software listings etc. You can find the list here: http://pdp8.hachti.de?docs I cannot find binaries for the following listings: Product Code: MAINDEC-08-DHKMC-A-D Product Name: PDP-8E Extended Memory Address Test (EA8E) Date Created: April 1975 Maintainer : Diagnostic Group Author : Vernon Frey, D.Macomber Product Code: MAINDEC-12-D8CD-D Product Name: KW12A Clock Test Date Created: December 1, 1971 Maintainer : Diagnostic Group Author : Raymond Shoop Product Code: MAINDEC-12-D8LA Product Name: A.I.P Instruction Test 1 Date Created: June 1, 1971 Maintainer : Diagnostic Group Author : Raymond Shoop Product Code: MAINDEC-08-DHRKC-E-D Product Name: RK8E Data Reliability Test Date Created: April 15, 1975 Maintainer : Diagnostic Group Author : John Vrobel Product Code: MAINDEC-8E-D8AB-D(D) Product Name: DK8E Clocks Diagnostic Date Created: June 1, 1971 Maintainer : Diagnostic Programming Group Author : John Vrobel Product Code: MAINDEC-8E-D6CA-D Product Name: VC8-E Display Diagnostic Date Created: June 21, 1971 Maintainer : Diagnostic Ggroup Author : Patrick Coyne Replaces : MAINDEC-8E-D3AB Product Name: TD8E DECTape Diagnostic Date Created: November 1, 1972 Maintainer : Diagnostic Group Author : E.Steinberger/B.Hansen Product Code: DEC-08-LHAA-D Product Name: "HELP" Loader Date Created: April 1, 1967 Maintainer : Software Services Group Product Code: Digital-8-5-U-Sym Product Name: Binary Punch (ASR33 or 75A) Date Created: March 1, 1965 Product Code: MAINDEC-08-D4A0-D Product Name: PDP-8, 8/I Memory Parity Checkerboard Date Created: May 14, 1968 Maintainer : Diagnostics Group If anybody has one or more of them, please send it to me! But please be aware that I am looking for the *exact* versions :-) Many thanks and best wishes, Philipp :-)

18 years, 4 months

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3rd party HP-IB drives, Bering 7320SC Econopac (Ebay 180230181732)

by rdbrown＠pacific.net.au

Bering 7320SC Econopac Hard Drive Item number: 180230181732 The drive isn't mentioned in their current (2005) Econopac list. and a non-HP-IB paper tape reader/punch. GNT 4604 READER PUNCH CNC - TAPE READER WITH MANUAL. Item number: 120241325099 3rd party HP-IB => SCSI et al disk hardware - I wonder if any of them would consider releasing their code for the HP-IB emulation under an Open Source, Hobbyist or Non-compete license. I wonder too whether they have HP-IB device protocol manuals that could be scanned for bitsavers. Looks like Bering may do Amigo, SS-80, CS-80 http://www.bering.com/home.htm (web page not recently updated, still in ylwbook.addresses.com phone book) Bering Technology, Inc. 1400 Dell Ave., Ste. B Campbell, CA 95008-6620 USA I think these guys are selling SS-80 9122 etc devices http://www.isa-j.co.jp/english/product/HP/HPIB_SCSI/ CS-80 drives targeting HP-1000 & HP-3000 systems (still in online phone book) http://www.reactivedata.com/2-LegacyDiskAndTapeEmulators/leghp1000.htm

18 years, 4 months

1
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Research Unix v9, v10

by slawmaster＠gmail.com

I've been thinking about some of the later versions of Research Unix, such as v9 and v10. If I could track down install tapes/disks, would I be able to run it on my VAXstation 4000-60? It seems that post-v7 didn't spread very far, so I guess I won't be too surprised if nobody knows :( John -- Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn

18 years, 4 months

5
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Suns available in Germany

by Arno_1983＠gmx.de

Hello fellow collectors, University is about to clean out storage space and there are a few older Sun workstations which will probably get their tickets: 4x SPARCstation 10 2x SPARCstation 20 5x Ultra 5 (both sBus and UPA versions) 2x Ultra 10 (or so) I did peek inside and didn't find anything particularly exciting (e.g. matched processors or unusual boards) so I suppose they will not warrant shipping and would have to be picked up at Erlangen University, southern Germany. Some do have memory and disks installed, others were robbed. So long, Arno -- Arno Kletzander Student Assistant // Studentische Hilfskraft Informatik Sammlung Erlangen www.iser.uni-erlangen.de Psst! Geheimtipp: Online Games kostenlos spielen bei den GMX Free Games! http://games.entertainment.gmx.net/de/entertainment/games/free

18 years, 4 months

1
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Apple ADB mouse optical conversion

by dgriffi＠cs.csubak.edu

Does anyone here have any ideas on how one would go about converting a ball-type Apple ADB mouse into an optical one? -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

18 years, 4 months

1
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Dilog DQ132 question

by tiggerlasv＠aim.com

I guess my first question would be - If you're running on an 11/83 under RSTS/E, why WOULDN'T you want to use 22-bit addressing? Surely you're not "wasting" a perfectly good 11/83 on V6C or V7.0 ? ;-) But, to answer your question - My interpretation is that you can: Use 22-bit addressing, in which case RSTS/E (V8.0 and above) will see the controller as a TSV05, and will use 22-bit addressing to access memory above 256K (when applicable). You'll note that if you do a HAR LIST under RSTS/E V8.0 or above, it will flag this drive as "extended features enabled", indicating that it can use the full 22-bit address range. or Set 18-bit addressing, in which case RSTS/E (V7.0) will see the controller as a TS11, which will ONLY be able to access 256K of memory without modification to the device driver. (V8.0 and above might (properly) recognize it as a TSV05 either way, however, the "extended features" will be disabled, and it will only be able to access 256K of memory.) If I left anything out, I'm sure someone will chime in. . . . Tim

18 years, 4 months

5
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PDP 11 RL11/01 Address confusion.

by bqt＠softjar.se

"Tim Shoppa" <tshoppa at wmata.com> skrev: > Johnny writes: > >> The PDP-11 CPU is a 16-bit machine, so all code will always just deal >> with 16-bit values. >> >> The PDP-11 can have different buses, with different behaviours, but >> basically we can divide them into three groups. >> 16-bit bus >> 18-bit bus >> 22-bit bus >> >> Machines with a simple 16-bit bus is almost nonexistant, but there was >> some early Q-bus CPUs with a pure 16-bit address range, I seem to remember. >> >> 18-bit means all Unibus machines, as well as some Q-bus machines. >> >> 22-bit means most Q-bus machines. > > Obviously written from a 11M+ user's perspective. Ignore all those puny Unibus and Q-bus machines without MMU, will you? But they still run RT-11 just fine! Guilty as charged on the 11M+ part. :-) However, I think I covered machines without MMUs as well, I just didn't spell it out. Without MMUs are the same as machines with the MMU disabled. The one thing that differs is who puts out the extra bits on the address bus if there are more than 16 address bits, when you don't have an MMU. The CPU do, in those machines. Oh well. And I thought I'd done a real proper job. :-) 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

18 years, 5 months

1
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microvax 3800 available in NE ohio

by vax9000＠gmail.com

Hello people, I am dumping my small collection. If anybody is interested and is able to pick it up, you are welcome to get it. I do not ship or store. It was a complete microvax 3800 (upgraded to 3900) but I took the KA655 to fix my barebone 3900. You get the computer with RA7? DISK, DSSI disk controller, memory, ethernet card, tape card and tape drive. Plug in a KA655 and it is ready to go. vax9000 ----------------------------------------------------------------------------- Ever watched "American Beauty"?

18 years, 5 months

2
2
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LA180 doc finally all scanned

by mouse＠Rodents.Montreal.QC.CA

Some time ago (two months? I forget) someone sent me the "LA180 DECprinter I Maintenance Manual" to scan. Thanks to the good offices of our very own Dave Dunfield, the 8?x11 pages were easy. I finally went through the foldout pages, scanning them with my flatbed. What I have not done: (1) where two scans were necessary to cover a whole page (which was true of most of the foldout pages), I have not merged the two scans into a single image file; (2) I have not interfiled them into the PDF, largely because I've never bothered to create/find PDF building/busting tools (the only PDF-aware software I have at hand is ghostscript). However, the information is all there. See ftp.rodents.montreal.qc.ca:/mouse/docs/DEC/LA180/ - the .pdf is the 8?x11 scans; the scan.%03d.bz2 files are the scans of the foldout pages. I think the pages are in order - that is, if page N is before page M, all scans of page N have lower numbers than any scan of page M. Anyone who cares to is welcome to pick them up and put them somewhere more appropriate, like bitsavers - I suspect anyone doing that would want to do the things I mentioned above I didn't do, but, well, that calls for a Princess Bride quote.[%] Most of my scans were 300dpi 1bpp line-art scans. Two pages came out quite horrible when done that way; those I scanned as greyscale - you can identify them by the file sizes (scan numbers 003/004 and 022/023, as it happens). Some small number of my scans (two, I think) actually fit on an 8?x11 page, just sideways. Those scans have been rotated so they're right-ways-up when the image file is viewed the usual way. My scans are bzip2ed PBM (for the 1bpp) or PGM (for the greyscale) files. If someone needs something else, like TIFF or GIF, let me know and I'll see what I can do. Unfortunately the FTP daemon I'm running, while it supports conversion on request, does not grok *removing* suffixes to generate requested files. If you need bunzip2ed versions for some reason, let me know and I'll see what I can do. I still have the dead-tree version, so if you find anything that needs rescanning or any such, it's not out of the question. [%] "As you wiiiiiiiish!" /~\ The ASCII der Mouse \ / Ribbon Campaign X Against HTML mouse at rodents.montreal.qc.ca / \ Email! 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B

18 years, 5 months

1
0
0 0

Dilog DQ132 question

by mcguire＠neurotica.com

Hey folks. I'm trying to get an Overland Data OD3610 drive working with a Dilog DQ132 controller in a PDP-11/83 running RSTS/E. The DQ132 manual documents dipswitch S8 as enabling 22-bit addressing, and it defaults to disabled. Here's the relevant paragraph from the manual: ------------- Switch S8 selects between 18- and 22-bit addressing. Only the TSV05 software handler supports 22-bit addressing on the Q Bus. The TS11/TU80 handler may require modifications to support 22-bit addressing on the Q Bus. Default value is S8 ON, selecting 18-bit main memory addressing. ------------- So am I to assume that it can be used as a TS11 in a 22-bit system, and the driver uses bounce buffers? Any idea? Thanks, -Dave -- Dave McGuire Port Charlotte, FL

18 years, 5 months

1
0
0 0

Looking for a M8330 or a couple of SN74194's

by RodSmallwood＠mail.ediconsulting.co.uk

Hi Its not test gear that's the problem its access to the board. My Tek 465 will trigger on single pulses with no problem. However whilst it's recommended that the the first CPU board (the 8330) be in slot 2 (The front panel is in No1) its not mandatory. So I can move the boards back a bit and get to the front of the 8330. Manual I have, (very good) Schematics also (Awful) so bad I may even redraw at least the 8330. I have an A0 HP plotter so its easy to do drawings. Rod -----Original Message----- From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org] On Behalf Of Tony Duell Sent: 31 March 2008 22:52 To: cctalk at classiccmp.org Subject: Re: Looking for a M8330 or a couple of SN74194's > > > Not only did Cricklewood have them, but they arrived Saturday morning. I'm even luckier in that I live near enough to Cricklewood Electronics that I can pop over there and pick the chips up the same day ;-) > That effected a partial fix. > The timing generator is a string of four bit shift registers clocked > with 20Mhz. OK. > Various combinations of their outputs are used to set and reset > bistables made out of cross coupled 7440's. > As the problem I'm fixing is you can't load memory, which is a one > shot operation, its slow old work. I don;t know what test gear you have, but I find a simple logic probe to be more use than a 'scope for this sort of problem. The former can easily detect narrow pulses that are difficult, if not impossible, to see on a non-storage 'scope. Of course an 'Advanded Logic Probe' as HP called the LogicDart is even nicer, but... Do you have the maintenance manual? Not the printset (schematics), but the book which is a low-level circuit description? It's well worth reading!. I would have thought it wouldn't be too hard to keep on hitting the DEP key and seeing what, if any Omnius signals are generated. And then totrace back the missing one(s). [...] > I also return all systems to working order. Apart from a couple of > VT420's with ticking SMPSU's everything I have restored runs. (Three Any reason you';ve not fixed those? Ticking SMPSUs are often quite simple to fix, maybe just dried-up capacitors. -tony

18 years, 5 months

3
3
0 0

What is a FINO? Need about Vff.

by pichotjm＠free.fr

Hi, Pls, have a look at this description of Signetics 25000 series 9046 XN component: http://pichotjm.free.fr/humr/2.html Can you explain me, what is Vff? Is it a good idea to decrease this voltage in order to increase reliability? But what will happen with our 50 Hz european supply? I need help... (please, answer with simple english) JM Pichot

18 years, 5 months

4
4
0 0

Looking for a M8330 or a couple of SN74194's

by RodSmallwood＠mail.ediconsulting.co.uk

Not only did Cricklewood have them, but they arrived Saturday morning. That effected a partial fix. The timing generator is a string of four bit shift registers clocked with 20Mhz. Various combinations of their outputs are used to set and reset bistables made out of cross coupled 7440's. As the problem I'm fixing is you can't load memory, which is a one shot operation, its slow old work. A spare 8330 would confirm if that's where the problem is and I expect would speed up the repair on the current one. I'll continue with fixing it and keep an eye open for a spare. Getting one from the US would be an option. I also return all systems to working order. Apart from a couple of VT420's with ticking SMPSU's everything I have restored runs. (Three VAX's, Two alphas, a Rainbow 100+, DECMateII, Pro350, Pro380, a DS3100, a VS3100 and assorted LA printers and VT terminals) Rod -----Original Message----- From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org] On Behalf Of Tony Duell Sent: 28 March 2008 22:52 To: cctalk at classiccmp.org Subject: Re: Looking for a M8330 or a couple of SN74194's > > Hi Tony > I agree that the concept of originality is important in what we do. > The system I have is original in the sense that all the parts are from > the right era. However the current configuration is not that as stated > on the factory label. You could also say that any item with a If this is the machine I think it is, I know not only the chap you got it from, but also the owner before that. IIRC, it originally had a TU56 (single drive versiun, and no I don't mean a TU55) which is currently on my desk, hooked up to my PDP8/e. And the RX8/e is not original. If you look at one of the CPU logic boards, you'll see one of the chips (I forget what) has been replaced. I did that over 10 years ago to cure a problem with the top 4 data lines in some operation or other. The TU56 was 'payment' for that repair... > date of later than the manufacturing date and not the result of a > repair or upgrade is not original. True, and some museums, alas, take it that way, and refuse to instal replacement parts to keep their machines going, even if said parts are contemporarty with the machine. Personally, I like all my classics to run. However, I also like to use as few spares as possible. If your clock generator was missing, or physically cracked in half, or... then I would agree you need an M8330 board. But if you can get your old one to run again, even by using more modern parts (I would have no problems fitting LS chips if they would work electrically, for example), then I'd rather keep the spare board for somebody who really did need it. > > Thanks for the tip re Cricklewood I will contact them. They may only have LS or something like that. As I said, I needed some 7495s, a rather oscure shift register chip that I couldn't find anywhere. They had 74LS95, which worked fine in my HP9820. OK, not original, but at least I can use the machine again. -tony

18 years, 5 months

3
3
0 0

PDP 11 RL11/01 Address confusion.

by tshoppa＠wmata.com

Johnny writes: > The PDP-11 CPU is a 16-bit machine, so all code will always just deal > with 16-bit values. > > The PDP-11 can have different buses, with different behaviours, but > basically we can divide them into three groups. > 16-bit bus > 18-bit bus > 22-bit bus > > Machines with a simple 16-bit bus is almost nonexistant, but there was > some early Q-bus CPUs with a pure 16-bit address range, I seem to remember. > > 18-bit means all Unibus machines, as well as some Q-bus machines. > > 22-bit means most Q-bus machines. Obviously written from a 11M+ user's perspective. Ignore all those puny Unibus and Q-bus machines without MMU, will you? But they still run RT-11 just fine! Lots of Unibus and Q-bus and not-anything-bus-11's all do quite fine with 16 bit address spaces. While the Unibus electrically has 18 address bits from the get-go, the Unibus 11's without memory management (or without the memory management option) don't use the last two. Even "later" Unibus CPU's like the 11/04 still came without MMU (and it was not an option, either!) Obviously "early" and "later" are taken to be Lasnerian. Tim.

18 years, 5 months

1
0
0 0

Looking for a M8330 or a couple of SN74194's

by RodSmallwood＠mail.ediconsulting.co.uk

I don't suppose you still have the old M8330 do you? Rod -----Original Message----- From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org] On Behalf Of Charles H Dickman Sent: 02 April 2008 02:01 To: On-Topic and Off-Topic Posts Subject: Re: Looking for a M8330 or a couple of SN74194's Tony Duell wrote: > DEC scheamtics have the odd error on them (I've heard it claimed said > errors are deliberate, either to stop the machine being copied, or as > copyright traps on the diagrams themselves). They're also somewhat > unconventionally drawn (flip-flops may appear to have 4 outputs!), but > I've got used to them. I must say that if I need to re-draw a > sechematic, I use pen and paper, not a CAD system... > A year and a half ago I was playing with a PDP-8/e and trying to get an EAE working with it. I ended up needing a later version M8330. My original boards were rev 1 and the EAE didn't work until about rev 3. The drawings I found online were WAY different than the boards I had. For the EAE, it looked like there were some serious timing issues, so the later board revisions were quite significant. So, if your boards don't match the drawing rev, don't expect there to be a match. -chuck

18 years, 5 months

1
0
0 0

Looking for a M8330 or a couple of SN74194's

by RodSmallwood＠mail.ediconsulting.co.uk

Hi Having worked for DEC for a number of years I'm used to the odd logic symbols. They do explain them in the manual. I don't use a CAD system but something much more useful. Visio. Define a DEC logic symbol once, add connection points in the right places, drop as many copies as you need, join connection points and print on A0 paper. Modify drawing as much as you like and print a new copy each time. Iv'e moved the boards back a bit and as soon as I get a few mins I'll see if I can spot why it won't write to memory. Rod -----Original Message----- From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org] On Behalf Of Tony Duell Sent: 01 April 2008 20:31 To: cctalk at classiccmp.org Subject: Re: Looking for a M8330 or a couple of SN74194's > > Hi > Its not test gear that's the problem its access to the board. My Tek > 465 will trigger on single pulses with no problem. > However whilst it's recommended that the the first CPU board (the > 8330) be in slot 2 (The front panel is in No1) its not mandatory. So I > can move the boards back a bit and get to the front of the 8330. All Omnius slots are the same, and in an 8/e backplane, AFAIK all slots are plain Omnibus. The only time the top connectors are used on the M8330 is if you have the EAE board set installed, I think. If you do, take it out for the moment (you don't need it when trying to sort out a timing generator problem). You can then put the M8330 in whatever slot you want. An extender board is useful, but by no means essential :-). Another trick that's worked for me in the past if I can't re-arrange the boards and don't have an extneder is to solder a hnadful of wires to useful testpoints on the board and put it back in the cardcage. Then probee the free ends of the wires (make sure they don't short to anything!). Normally 2 or 3 iterations of doing that will get me to the faulty chip. > > Manual I have, (very good) Schematics also (Awful) so bad I may even > redraw at least the 8330. I have an A0 HP plotter so its easy to do > drawings. DEC scheamtics have the odd error on them (I've heard it claimed said errors are deliberate, either to stop the machine being copied, or as copyright traps on the diagrams themselves). They're also somewhat unconventionally drawn (flip-flops may appear to have 4 outputs!), but I've got used to them. I must say that if I need to re-draw a sechematic, I use pen and paper, not a CAD system... -tony

18 years, 5 months

1
0
0 0

What is a FINO? Need about Vff.

by pcoghlan+cctech＠vms.eurokom.ie

pichotjm <pichotjm at free.fr> wrote: > >Pls, have a look at this description of Signetics 25000 series 9046 XN >component: http://pichotjm.free.fr/humr/2.html It is not always necessary to go to the expense of buying a 25000 series chip. I found some WOM in my Dec Alphaserver 1000A recently. I'm not interested in this bleeding-edge stuff (besides its too new to be on-topic here) so I have now replaced it with some ordinary memory. I wonder if I could get a good price for the WOM on ebay? >Can you explain me, what is Vff? Is it a good idea to decrease this voltage >in order to increase reliability? 6.3Vac is a common voltage for valve (tube) filaments. Given that the 25000 series is implemented in VLSI (Vacuum large scale integration), I suspect Vff is the supply to the filaments for the integrated valves on the WOM chip. Decreasing Vff should reduce power dissipation and improve the lifetime of the chip. However, it may also result in poorer noise immunity. Either that or Vff is the reference voltage used by the flip-flops and decreasing it will unbalance the chip by creating an excess of flops over flips. >But what will happen with our 50 Hz european supply? Typically, these things are designed for the American market with no thought given to widely used standards in other parts of the world. I suspect we will have to use motor-generator sets to power this type of circuit. Solid state frequency converters will not be suitable for the critical power requirements here. >I need help... > >(please, answer with simple english) > >JM Pichot > Regards, Peter.

18 years, 5 months

1
0
0 0

Adding a 3rd floppy to an old PC SCSI controller

by cclist＠sydex.com

Dwight asked: > Pardon me for asking but are you sure the chip can provide > enough drive? Most floppies expect to terminal with about > 150 Ohms. That is more than an unbuffered output of most > chips are designed for. > Just asking? Good point--but the datasheet states right in the opening remarks that it can be connected directly to the disk drive with its own internal 48 ma buffered output and schmitt inputs. The datahseet's easy to find on the web--several places have it. Here, for example: http://www.tranzistoare.ro/datasheets2/36/366021_1.pdf I like the DP8473--unlike the Intel 82077AA and later chips, it still knows how to do FM correctly--and will even write 128 byte sectored MFM, which is something that Intel was ever able to do. Don Maslin and I worked through a pile of FDC chips before we found this one. I think there was a Future Domain card (1680?) that brought all 4 floppy drives out to 2 headers--and I certainly could have added one to do that myself for 4 drives, but 3 on one cable was the easiest. Cheers, Chuck

18 years, 5 months

2
1
0 0

PDP 11 RL11/01 Address confusion.

by doug＠stillhq.com

Hi Everybody I was reading some doco last night (specifically the DEC RL11/01 Disk Subsystem Training Handout), and I am confused. (That is nothing new...) In the "Subsystem commands section", the addresses specified for DAR and CSR are 774404, and 774400 respectively, but in the back of the document, under the 'toggle in programs' section, the DAR and CSR are shown as being at 174404 and 174400 respectively. Hmmm. I see three possibilities: 1. I have (re) discovered a documentation error - I wonder if DEC, no, HP, no Compaq, would be happy for me to submit an amendment :-) 2. The hardware throws away the upper bits so both references are correct. Hmmm Possibly not :-) 3. There is some other stuff happening that I missed... If anybody could shed some light on this I would appreciate it. The background to the problem is that I can not convince my shiny, wonderful, (and noisy) DL01 to perform the seek test - Me thinks there is a problem.... Doug

18 years, 5 months

9
11
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Looking for a M8330 or a couple of SN74194's

by RodSmallwood＠mail.ediconsulting.co.uk

Oh I forgot.. The 420's .. I have not done anything because a) It only happened last week b) I cant find any drawings. Rod -----Original Message----- From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org] On Behalf Of Tony Duell Sent: 31 March 2008 22:52 To: cctalk at classiccmp.org Subject: Re: Looking for a M8330 or a couple of SN74194's > > > Not only did Cricklewood have them, but they arrived Saturday morning. I'm even luckier in that I live near enough to Cricklewood Electronics that I can pop over there and pick the chips up the same day ;-) > That effected a partial fix. > The timing generator is a string of four bit shift registers clocked > with 20Mhz. OK. > Various combinations of their outputs are used to set and reset > bistables made out of cross coupled 7440's. > As the problem I'm fixing is you can't load memory, which is a one > shot operation, its slow old work. I don;t know what test gear you have, but I find a simple logic probe to be more use than a 'scope for this sort of problem. The former can easily detect narrow pulses that are difficult, if not impossible, to see on a non-storage 'scope. Of course an 'Advanded Logic Probe' as HP called the LogicDart is even nicer, but... Do you have the maintenance manual? Not the printset (schematics), but the book which is a low-level circuit description? It's well worth reading!. I would have thought it wouldn't be too hard to keep on hitting the DEP key and seeing what, if any Omnius signals are generated. And then totrace back the missing one(s). [...] > I also return all systems to working order. Apart from a couple of > VT420's with ticking SMPSU's everything I have restored runs. (Three Any reason you';ve not fixed those? Ticking SMPSUs are often quite simple to fix, maybe just dried-up capacitors. -tony

18 years, 5 months

2
1
0 0

Adding a 3rd floppy to an old PC SCSI controller

by cclist＠sydex.com

> Date: Tue, 1 Apr 2008 10:47:25 +0200 (CEST) > From: Christian Corti > The 8473 directly supports four drives, so you can do the "trick" a second > time for a fourth drive. And even some motherboard Super I/O chips have > support for four drives, the outputs are simply not used. My needs and the number of spare conductors on the cable simultaneously gave out with 3 drives. Somewhere in my collection I've got a controller (may not even be SCSI; could be ESDI or MFM/RLL) that had a jumperable option to drive 4 floppies from a single cable by using the drive select jumpers and a common motor control line. The two downside issues are that your drives have to have 4 drive selects (or you had to be clever with your cable twists) and when one motor comes on, they all do. Better to use two headers and two cables, IMOHO. Cheers, Chuck

18 years, 5 months

1
0
0 0

What is this? "DAMIUS"?

by jplist2007＠kiwigeek.com

Was waffling through the 'Worst Wiring' site this morning: http://www.darkroastedblend.com/2008/03/disturbing-wiring-part-3.html And the second to last picture is this: http://lh5.google.ca/abramsv/R-8VzPXRjMI/AAAAAAAANCE/jx8JYx24UY0/s800/20701… Is this a real machine? It might have nothing to do with computing at all, there's an awful lot of pot dial looking things on it. I'm still curious. Thanks all; - JP

18 years, 5 months

4
3
0 0

PDP 11 RL11/01 Address confusion.

by bqt＠softjar.se

Doug Jackson - pesonal email <doug at stillhq.com> wrote: > Hi Everybody > > I was reading some doco last night (specifically the DEC RL11/01 Disk > Subsystem Training Handout), and I am confused. > > (That is nothing new...) > > In the "Subsystem commands section", the addresses specified for DAR and > CSR are 774404, and 774400 respectively, but in the back of the > document, under the 'toggle in programs' section, the DAR and CSR are > shown as being at 174404 and 174400 respectively. > > Hmmm. I see three possibilities: > > 1. I have (re) discovered a documentation error - I wonder if DEC, no, > HP, no Compaq, would be happy for me to submit an amendment :-) > > 2. The hardware throws away the upper bits so both references are > correct. Hmmm Possibly not :-) > > 3. There is some other stuff happening that I missed... > > If anybody could shed some light on this I would appreciate it. The > background to the problem is that I can not convince my shiny, > wonderful, (and noisy) DL01 to perform the seek test - Me thinks there > is a problem.... People have already convered most of this, and essentially got all the details down. I'll just make a few comments, which relates to several answers. And maybe clarify things in a bit more technical detail. The PDP-11 CPU is a 16-bit machine, so all code will always just deal with 16-bit values. The PDP-11 can have different buses, with different behaviours, but basically we can divide them into three groups. 16-bit bus 18-bit bus 22-bit bus Machines with a simple 16-bit bus is almost nonexistant, but there was some early Q-bus CPUs with a pure 16-bit address range, I seem to remember. 18-bit means all Unibus machines, as well as some Q-bus machines. 22-bit means most Q-bus machines. When the PDP-11 sits on anything but a 16-bit bus, it must use tricks to somehow actually utilize the extra address bits. This is done at several places, and in several ways. The most important component here is the MMU. When you enable the MMU, you can select wether you want 18-bit or 22-bit addressing (assuming you have a 22-bit capable machine). With MMU turned off, addresses are directly physical. The MMU will simply just extend the physical address 160000-177777 to 760000-777777 if we have an 18-bit bus, and 17760000-17777777 of we have a 22-bit bus. If you enable the MMU in 18-bit mode, the MMU will start using the APR registers to relocate your addressing. All your addresses in the PDP-11 will be virtual addresses, which combined with the APR values will form physical addresses. If this is on a 22-bit capable machine, the MMU will now detect if you are addressing physical 760000-777777, and extend those addresses to physical 17760000-17777777, same as when you play in 16-bit mode, except for which physical addresses it remaps. In 22-bit mode, the MMU will use your virtual address in combination with the APR value to create a physical 22-bit address, and be happy. So, to answer another persons comment. A 11/70 can be run in either 18-bit addressing or 22-bit addressing. Also, since a Unibus is always 18-bit, any Unibus device will work fine in an 11/70, even though it has 22-bit addressing (the same is true of the 11/44, 11/24, 11/84 and 11/94, by the way). If the 11/70 is run in 18-bit mode, DMA from Unibus will directly address memory and everything will be just fine. Now, the really tricky part is how to deal with DMA on a Unibus machine, where devices doing DMA only can put out 18-bit addresses, while the MMU is using 22-bit addressing. When 22-bit addressing is enabled, there are two PDP-11 designs. From a normal users point of view, the difference is irrelevant. For OS programmers, it do make a difference, however. 11/70: all DMA addressing will actually be directed to a 124KW area addressed at 17000000-17760000. Notice how this is physically directly before the I/O page. These addresses cannot hold any memory. Instead, this area of memory is virtual, and subjected to a new remapping by the Unibus Map, if enabled. This remapped address in turn, is always on the memory bus. So the Unibus Map is only a mapping between 17000000-17760000 and the memory bus. This also means that on an 11/70, you can access addresses in the I/O page, on the memory bus, but you have to go through the Unibus Map. And this is needed, if you want to access the CSRs of the memory boxes, which don't sit on the Unibus at all. Note that the Unibus Map don't have anything to do with the I/O page addressing. That is done by the MMU as a part of forming the physical address. The MMU will then forward the address to either the memory, Unibus Map, or Unibus, depending on which physical address it is. The Unibus will, however, always forward DMA transfers to the Unibus map, which will convert it into a physical address, and always pass it on to the memory bus. (As a parethesis the RH70 massbus controllers in the 11/70 generate 22-bit addresses straight away, and sends them directly to the memory bus.) 11/84 and 11/94: With the 11/84 and 11/94, DEC removed the concept that the physical addresses 17000000-17760000 are remapped by the Unibus map. Instead they placed the Unibus map between the Unibus and the CPU bus. And all physical addresses on the CPU bus stay physical, and either address memory, or the I/O page. When the access is to the I/O page, the Unibus Map also relays the access back out on the Unibus, so both things on the CPU bus and the Unibus can respond. I haven't checked, but I believe that the 11/24 and 11/44 are a mix of the two above. They reserve the memory area like the 11/70, but the Unibus map works somewhat like the 11/84 and 11/94. But I/O page access don't do through it, and I think that the memory CSRs are visible on the Unibus instead. (Maybe this would be a third variation, but I'm a bit uncertain at this point on exactly how they work.) The only thing remaining are the pure 22-bit machines, which are most Q-bus machines. They don't have a Unibus map. Instead all devices can address the whole memory directly with DMA, and can run as is. This is where the RLV11 and similar devices runs into a small problem. These controllers are actually designed for 18-bit Q-bus machines. But the only thing that happens is that the high address bits are left cleared always when they do DMA, so they can do DMA just fine in 22-bit machines, with the limitation that they can only do DMA to the low 128KW of memory. That's why the bounce buffers are needed for these. Johnny

18 years, 5 months

1
0
0 0

AC adapter for Dayna PORT SCSI/Link-T

by kelly＠catcorner.org

Does anyone know the specs for the wall wart for one of these? I have seen 2 different ones, and would like some clarification. I've seen 9V DC center positive and 12V DC center positive. Thanks for any help, Kelly

18 years, 5 months

1
0
0 0

Adding a 3rd floppy to an old PC SCSI controller

by cclist＠sydex.com

The other day, I noted that both the DTC 3280 and the UltraStor 14N SCSI controllers have an option to add a 3rd floppy drive to the common floppy cable. Essentially, they place the motor control on pin 4 and drive select on pin 6 for the extra drive. It's not hard to make up a cable (Ultrastor supplied one with their kits) and a simple DOS driver provides access to the third diskette. I have a couple of drivers, if anyone's interested. But I wanted to use a Future Domain 1670 controller in this case. It uses the same FDC (National DP8473), but doesn't bring the motor and drive select out to the floppy connector. So, for 5 minutes of time, and a couple of lengths of wire wrap wire and a hot soldering iron, all one need do is strap pin 4 of the floppy connect to pin 1 of the 8473 and pin 6 of the floppy connector to pin 42 of the 8473. Works great. Wish I would have thought of this trick when the controller was new 15 years ago. Cheers, Chuck

18 years, 5 months

3
2
0 0

Future Domain TMC 1670 BIOS

by cclist＠sydex.com

Anyone have one of these ISA SCSI controllers out there with a version 3.4 or 3.5 BIOS? I'm looking to upgrade the old BIOS on my card and would appreciate a data snapshot of the ROM. Thanks, Chuck

18 years, 5 months

1
0
0 0

PDP11-04 available in Cleveland, Ohio, USA for $100

by vax9000＠gmail.com

This machine is not mine, which has been mine for a while. Somebody bought it but left it in my basement for the last two years. I can't store it for him any more, but his email stopped working and I can not find him. I sell it with the price he bought it from me, in case that he comes to me for it in the future. You are expected to pick it up. Otherwise you must arrange shipment. vax, 9000

18 years, 5 months

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Neat find (in my own junk bin!) - NS 8073

by doug＠stillhq.com

Hi I saw a message on the classic computer list in 2003 from Ethan saying that he had a RB5X robot controller with a 8073 SC/MP controller on it. The thread degenerated into a general car discussion from what I have been able to determine. Today, I received my INS8060 and INS8073 CPU chips from Unicorn - The 8060's are easy, I have been able to find tons of doco, and will be producing a couple of SC/MP blinken lights and swiches systems (but not with 2012 ram chips ;-) ) shortly - That's the easy bit. I am very interested in the INS8073 (with Tiny Basic onboard), and have so far come across a PDF of the 807x (8070/8072), as another spare time consuming system - My questions are; 1) Has anybody got a reference implementation for the 8073 - I suspect that it involves a 4Mhz xtal, and a RS232 line driver/receiver connected to SA (as RXD) and F1 (as TXD) - that can be breadboarded easily, but the real secret is what address will it be expecting the external 6164 ram to provide the 8k of massive storage... 2) Did anybody end up reverse engineering the RB5X board - in the words of a somebody wiser than me -- "That'l do in a pinch" 3) Does anybody have the basic reference guide that indicates the allowed word lists for this part? Thanks, Doug Jackson

18 years, 5 months

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Caetron and Farallon

by steve＠radiorobots.com

Anyone have a pile of lit from either of these? Thanks, Steve

18 years, 5 months

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A simple request?

by tsw-cc＠johana.com

Lots of people mention devices (of all types) that are in some state of transfer (for sale, for a good home, need help in moving, etc.). While I appreciate all of these informative descriptions, I am loathe to respond since I don't know if I could be of any help due to distance. I would like to recommend that those requesting assistance mention their locale. We here in the USA have these nice devices called ZIP codes which are quite helpful. In other parts of the world, similar postal codes exist, and along with a country would indicate to the casual reader (like me) as to what level of participation they could achieve. Basically I don't have a need to respond to a request for assistance for moving a large piece of equipment that is 3000 miles from my home. Thanks. ____________________________________________________________________________________ OMG, Sweet deal for Yahoo! users/friends:Get A Month of Blockbuster Total Access, No Cost. W00t http://tc.deals.yahoo.com/tc/blockbuster/text2.com

18 years, 5 months

2
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NEC APC cctalk Digest, Vol 55, Issue 49

by trebor72＠execpc.com

cctalk-request at classiccmp.org wrote: > ------------------------------ > > Message: 4 > Date: Sat, 29 Mar 2008 08:53:04 -0700 (PDT) > From: Chris M <chrism3667 at yahoo.com> > Subject: Re: Anyone got a NEC APC > To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> > Message-ID: <492893.16798.qm at web65503.mail.ac4.yahoo.com> > Content-Type: text/plain; charset=iso-8859-1 > > I have 2. > snipped Don't think my > disks are worth a lot either, haven't managed to boot > off any of them. This too is a bummer, because one of > my units has a rare card along with a set of 5 1/4" > drives (external) and the driver software is on one of > them. Butler Flats Associates was the vendor. > > --- "Robert J. Stevens" <trebor72 at execpc.com> GOOD E-MAIL wrote: >> got my NEC APC running If you want to send me them [send your address to above E-Mail] and they are 8" I can test them. Then I can send you a couple back if they Don't boot to test your machine with or else Make Bootable copies of yours to send back with your originals. If they boot on my Machines then you'll know where the problem lies. I've got both CP/M-86 and MS-Dos 2.0 that boot up both of my Machines. Bob

18 years, 5 months

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Need a good home (currently in Arnhem, Netherlands)

by hofmanwb＠versatel.nl

I would like to part from - a Compaq 286/SLT luggable - an LA75 (Dec) printer - an LA50 printer - 4 x RL02 drives - 2 x RL01 drives - 2 x PDP11/24, but one is a mess - 20 + RL02 disks Wim

18 years, 5 months

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End of restoration of the early French computer SEREL ODP-505 (germanium CPU)

by pichotjm＠free.fr

| > ECN: Engineering change notice. Indicates revision of PCB.| | Thanks, I did not realise you had already translated it to English.| >| > The ODP-505 is a pure binary machine, not designed for arithmetics,| > statistical purposes or BCD computations.It is a real time (!!!) | > computer.| > Get some datas (voltages, frequencies, switch states, motor speed,| > temperature...) compare to thresholds or values, and speed up / | > slow down| > motor, or move a cadmium bar (?) in a nuclear reactor...| | I see. The Elliott machines were the same (but not the ICT1301), | keeping the gun of a tank level and aimed in the right direction, | accepting data from gyros and inertial sensors and tracking the | position and orientation of an aircraft or ship, cross checking with | compasses and other navigational systems, analysing sonar data and | tracking enemy submarines etc. I think we are right. I never worked with this machine, so i do expectations (with my good knowlegde of micro-processing) | By the time of the 920ATC we even used | a special real time programming language called Coral66, based on | Algol60 syntax but with cut down semantics to give highly efficient | run times. Before that everything was done in assembler (called | S.I.R.) or machine code.I have no information about software. I don't know if they had even an assembleror if they do the job with a pencil and a rubber. (as i explain in my IBM 650 section)Have a look there: http://pichotjm.free.fr/IBM650/fileUS.html| >> | The architecture of your machine reminds me of the first machine I| >> | was allowed to operate. It was an 18 bit binary machine, it had | >> 8k of| >> | memory built in, expandable with external modules and was made | >> by the| >> | Airborne Computing Division (ACD) of Elliotts, it was an Elliott | >> 920B| >> | and was a compact, flyable version of the commercial Elliott 903.| >> | There had been an earlier model 920A which I think would have been| >> | Germanium and was roughly the size and shape of a carpenters work| >> | bench. This may have been contemporary with your earlier machine I| >> | think. Unfortunately I never saw one in the flesh, but there was a| >> | bench in the computer room which I found out later, was the empty| >> | chassis of a 920A. Behind the bench was a large panel full of| >> | electrical 'chocolate strip' connectors where the analogue and| >> | digital input and output signals of the 920A could be connected up.| >> | Apparently some of the analogue outputs had been connected up to an| >> | oscilloscope to provide a visual display unit, though it used a | >> fair| >> | bit of processor time to keep it refreshed, even with the long| >> | persistence phosphor of an oscilloscope. The panel had been covered| >> | with board with pegs to hold mylar paper tapes and until the day it| >> | was scrapped I had not seen what was behind it.| | > Very interesting!There are some video connector in the earlier | > machine and| > the Serel companywas specialized in high tech video solutions.| | Possible application for computers in video back then were | superimposing images and standards conversion and just possibly | titling and graphics.You seem to have not browsed completly my website. I show about 200 beautiful photos describing these kinds of applications. We did superimposing images and standards conversion for ship, nuclear plants,helicopters test, meteo ... have a look there http://pichotjm.free.fr/Techno73/Techno73.htmlI have not translated the pages (need time) but if you click on every linksyou will see these beautiful pictures i have taken in the 'Le Bourget' aeronautic international fair in 1973.I have no returns about these publishings, so i am not very encoraged to translate them... If you want I will try to take time.I just verify it's translated! http://pichotjm.free.fr/Techno73/Techno73US.html(probably badly, but sufficient) | > I have read| > somewhere in docs, thatthis computer have a screen output...| | If it has two or preferably three digital to analogue converters then | a vector display is fairly easy, but maybe it was more complex than | that, and you only need one digital to analogue converter for a | raster display, provided you have enough CPU power to both drive the | display in real time and do any processing required as well.| | I should explain what I said about two or three A/D converter, you | have one to drive the X plate and one for the Y, ideally one for the | brightness (Z), but with a fast enough converter, you can deflect the | beam so fast so it will not mark the screen significantly and so no | need to turn the beam off before moving to the next item to be | displayed.I have a picture of the display terminal for the earlier one: http://pichotjm.free.fr/Serel/Notices/Serel%20computer%20dept/img_3673.html… following english page indicates 'Oscilloscopic characters display' | > I have found,| > last week a small notice describing microprogramming on| > ODP-505.http://pichotjm.free.fr/Serel/ODP505/MicroProgrammation/ | > MicroProgrammation.html(doc| > found in photomultiplier doc!)I have found commercial document | > describing| > displays and analog memories...I don't know the date... (1970?) I | > have to| > study these documents...| | I had a look but my understanding of French is terrible, and | technical details in French are even more difficult.Do you know how I am tired after a translation to publish in english? ...| >> I have a| >> earlier machine from the same company SEREL, named OA-1001. Built in| >> 1959/1960.I need to restore it. It lays on the floor (horizontal| >> position)... The blue one| >> here:http://pichotjm.free.fr/Serel/Photos/Photos.htmlI will start| >> restoring| >> next month (with the Sun!)| >| > | What is involved in the restoration? Do you intend to make it work,| > | this would be very hard without the schematics.| | | > As you know, i am alone,| > here. I want to make an esthetic restoration:Photos and notes, | > dismantle,| > photos and notes, wash, dry, fix the rust, protect with Rustol, | > photos an| > reassemble. I hope to be capable to do that... may be one year, may be| > two...| | As I understand it, that is what the big museums call preservation. | There has been a lot of discussion of the relative merits of | preservation and restoration. Restoration is what they call it when | we return a computer to running condition, preferably so it can be | demonstrated. There is some truth that restoring a computer always | destroys some of the original and that preservation is, to the | purist, a better thing to do. I know... but i can use a bad english word... It's why i precised esthetic!| As I have two 1301s, I have the luxury | of being able to restore one and preserve the other, but restoration | is a lot more enjoyable to me.May be, but i know the time needed. And I have many projects for the future.I don't used to watch back. I prefer future [i intend to live in! ;-) ]I do a lot of program in television, compression, splitting, ECC, FTP, transmission...(I have a son living in the USA, so he can watch french TV in broadcast quality... chutt!)| The other thing of course is simulation. This can be done at various | levels, simple simulation of the instruction set, more complex | simulation at gate level and in theory the ultimate would be to have | a 3D model of the computer you could walk around and inspect the | inside of, and attach a virtual oscilloscope to and watch the | analogue signal levels and be able to do hardware patches and have | simulated hardware faults and diagnose and repair them whilst the | lights and switches all worked like the real thing and the sounds and | 3D models of the peripherals would also be like the real thing. Maybe | I'd leave out the sound of a card deck being mangled and thrown into | the air by the card reader though.Yes i know all these kinds of technics... and can do the work (not 3D)It would probably be better to spend his time in creating a special software to do reverse engineering, (and more exciting for me) with a mixt of taking photos, and piloting schematics and routing simultaneously...| >| > May be some reverse engineering to get 2 or 3 schematics. (need one | > week for| > a board! I have 2 boards in process...)JM Pichot| | Good, Yes, but i have no courage to finish the task...| are you able to identify the function of each type of board | (such as 'And' gate, Flip-Flop etc)Probably, with the help of my lectures of the sixties...| If not I could perhaps compare with my 1301 schematics and see if | they have any similarities. How difficult is it to identify the power | supply connections?For the small computer, i have to analyse schematics (to be done!)For the earlier, cables are preserved and connected. I have power supplies, so it is allways possible to trace wires... (not really exciting!)| Are you planning on doing schematics for the board interconnections? Not today! or this year. First i plan to preserve the machine and publishphotos.| I imagine this would be very difficult, so probably best not to try.There is no national interest, today, in France, to preserve or studyold machines... It's a huge task. I can not do that... alone.So i will wait (or my sons..) that French speak, make meetings, makereports, ask for money... may be in 20 years. Museums are for paintings, ceramics, statues...I have to be more positive!!!By the way, if you are not still fed up, i spent last days in publishingan analysis about a display terminal designed in 1969, which use 32 TV delay lines as memory! Have a look there: http://pichotjm.free.fr/DisplayDL/DisplayDLus.htmlNote. I have not a perfect english, so i can misuse words. I never intend to be agressive, unpolite or to hurt any body. I wish you a good evening.Jean-Marie PICHOT

18 years, 5 months

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Looking for a M8330 or a couple of SN74194's

by cclist＠sydex.com

Dwight wrote: > I expect that someday, the supply will run dry. There are a few > parts that are already getting hard to find. 74S38 are one of them. > The ones that are really bad are the custom parts. The ROM chip > for the KIM is a good example. > I have a board that is waiting for a bus inteface chip. I watch > but don't have a lot of hope. One can still find UV-201 tubes/valves for sale. I expect to be fertilizer by the time that the world's source of TTL runs dry. But even now, SMT and programmable logic has progressed far enough that some sort of accommodation can be made if one wants to mount components on DIP-sized PCBs. The problems that I see are with the very special-purpose chips whose function and pinout aren't well understood. If you know what should be in a ROM, for example, there should be no problem cobbling something up that will work. The problem arises when you don't know what the contents are--and the ROM goes bad. Cheers, Chuck

18 years, 5 months

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Free microvax 3800 available in Cleveland Ohio, USA

by vax9000＠gmail.com

Hello people, I am dumping my small collection. If anybody is interested and is able to pick it up, you are welcome to get it. I do not ship or store. It was a complete microvax 3800 (upgraded to 3900) but I took the KA655 to fix my barebone 3900. You get the computer with RA7? DISK, DSSI disk controller, memory, ethernet card, tape card and tape drive. Plug in a KA655 and it is ready to go. If nobody is willing to take it, I will take it apart and sell the components to cover my time. vax9000

18 years, 5 months

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pdp-8/l switch handles?

by brad＠heeltoe.com

I'm sure this has been hashed over 100 times, but I'm curious (and please set me straight - or laugh!) If I wanted to find 4-5 of the nice plastic "switch handles" used on the front panel of a PDP-8/L, is there any hope of finding them? I'm only missing about 5 (I think). I know someone was making them from scratch, but is that the only way? Does anyone have a handful they's like to sell? (I need to figure out which colors I need, I know) go ahead, chuckle away, but i had to ask... -brad

18 years, 5 months

1
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NEC APC III

by cclist＠sydex.com

> --- Vaughan Karin Sage <vwsage at adam.com.au> wrote: > > Hi, I have an old NEC H03 APC III that has the > inbuilt twin 8"floppies & colour screen. I have > blown the High Tension transformer on the board to > the left of the VDU. Wondering if anyone has parts > for this old beastie. I used it to run EZCAM for > 2axis CNC machining & would love to get it going > again. The APC was part of the NEC PC98 series of machines, which are fairly compatible from the first (1980s) to the last (ca. 2000) members of the series. Technically, a better platform than the IBM PC series and marketed under varioius export model numbers, such as N5220. But sill the venerable PC 9801 under the badge. PC 98 was hugely popular in Japan, holding the majority of the market for the 80s and much of the 1990s. A note to one of the Japanese PC98 user groups should get you what you need. Members of this family are still in use for various industrial uses; lots of manufacturers, such as Mitubishi used them as controllers for their iron (I see a LOT of Mitsubishi EDM disks here). I'd expect to see a higher prevalence of PC 9801 series gear in Oz than in the USA, for example, simply due to geographic proximity. Failing rehabilitation of your old system, there are several decent 9801 emulators that run under Windoze that you might try to get your software running. Cheers, Chuck

18 years, 5 months

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cashtrac.exe ???

by belray1＠aol.com

Hi, I just say your message from 2004 about cashtrac. ?I have been using this great program for over twenty years and I would love to make it work with XP but I have no idea how to do it. ?When you say 95 dos box, what do you mean? ?Is there some way I can make my xp program work like 95 dos? If you have time to respond please do so to; Belray1 at aol.com and put cashtrac in the subject line so I do not spam your response. Thanks,? Gary Fetter

18 years, 5 months

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Plan 9, GNOT, 5620 terminals

by jeffj＠panix.com

> Date: Fri, 28 Mar 2008 02:56:51 -0400 > From: "John Floren" <slawmaster at gmail.com> > Subject: Re: Research Unix v9, v10 > To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> > Message-ID: > <7d3530220803272356j78f3f724ne5f10c37d32cb587 at mail.gmail.com> > I already have VMS on my Alpha and the VAX; if I can't get Research > Unix on the VAX, I'll stay with VMS. The later additions to Research > Unix evolved in some interesting directions which eventually led to > Plan 9, the OS I develop for at work. Are you also using Inferno and Limbo? The last I knew, Rob Pike was still active with Plan 9. Can't you ask him directly since any Plan 9 user ought to be a "close personal friend of ..." :-) Or is all that gone with the Alcatel merger? I never got to touch Plan 9 http://en.wikipedia.org/wiki/Plan_9_from_Bell_Labs It was ramping up just as AT&T IS was ramping down. I adored the names of all the BAD movies and the mascot: http://en.wikipedia.org/wiki/Glenda,_the_Plan_9_Bunny Glenda is the mascot of the distributed operating system Plan 9 from Bell Labs. It was drawn by Renee French ... As Plan 9 is named after the Ed Wood film Plan 9 from Outer Space, Glenda is named after Wood's film Glen or Glenda. I was curious about the "Aleph" language but that was dropped long ago. I agree for the need to better express parallelism in programming instead of just inlines and libraries for threads. > I'd love to find a Blit (AT&T/Teletype model 5620) terminal > and a VAX capable of running v10; that was a brilliant system. In the late 80s while working on Unix developement at AT&T IS (information systems), the porting base for SVR4.0 was a 3b2/400 (desktop size) and the 5620. But later terminals were better. Citing http://www.brouhaha.com/~eric/retrocomputing/att/5620/5620_faq.html The successor to the 5620 was the 630 which came out 1987. The processor changed back to the Motorola 68000 which the developers had wanted all along. Most of the 630 monitors were amber, although white and green monitors were also available. The monitors had a non-interlaced 1024x1024 pixels and did not have slow phosphors. A second RS232 port was included with optional SSI (3270 connectivity) and 512K RAM cards. In 1989 new firmware for the 630 came out and the name was changed to the 730. This firmware supported 3 RS232 ports, LAN cards, built-in 4014 emulator, and enhanced PF-keys. Options to the 730 included the SSI card (which added the 3rd RS-232 port), ISO and TCP LAN cards, and an X-cartridge. The LAN cards supported from 512K to 4Meg of RAM. In 1990, the 730+ came out with a faster 68000, more EPROM space and RAM was moved from the LAN card to the main controller. In 1991, ISDN connectivity was provided to AT&T Bell Labs. Meanwhile, AT&T research came out with a totally new motherboard controller card using the 630 monitor with totally new software (Plan 9) and called it a GNOT. It had a Motorola 68030 as the main processor. What I'm trying to say is that the newer terminals ought to be more desirable since they use parts that you can probably still get and emulate. The 5620 was based on the AT&T WE32000 CPU, which was fun to use at the time (the heart of the companion 3b2) but I fear there's no support for it anymore. A friend has a 5620 but not the games and toolkits (since TOAD is gone: the AT&T toolchest of unsupported software). The windowing software used the "layers" serial line protocol which will also be hard to re-create. Sigh: it was fun running programs that downloaded into the terminal (cip: drawing program for PIC, GEBACA: Get Back At Corporate America: a game where you shoot corporate logos, the clock-of-all-nations with builtin printer driver and keyboard lock ...) If you succeeded in crashing the 5620's monitor, you got a mushroom shaped cloud with the panic message. I still have some of the red dome 5620 bus-mice because they were truly the most comfy mice ever made. I suddenly have renewed interest in making a USB adapter for it. I found the 5620 web page from: http://fixunix.com/plan9/241581-9fans-blit-gnot-portrait-monitors.html > John > Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn ^^^^^^^^^ If u cn rd ths u cn gt a gd jb in hll ?

18 years, 5 months

3
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Looking for a M8330 or a couple of SN74194's

by RodSmallwood＠mail.ediconsulting.co.uk

Hello All As I said before my PDP-8/e partly failed insofar as it would not load data into memory. I rewound my personal memory back thirty plus years and did a lot of relearning about how pre microprocessor systems worked. Toggling the Add Load switch puts the address on the bus and triggers the time state generator to cycle. In the correct time slot the address is set in the memory ready for the data. Setting the Switch Register with the data and toggling the DEP key should write data from the SR to the pre set memory location via the bus in another time slot. The time states are generated by a string of SN74194 shift registers and the slot for the data is not being decoded. It looks like the '194 is at fault. Now I need either a couple of 74194's or an M8330 board. Rod Smallwood TheDECcollector

18 years, 5 months

6
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GRIDSCAN

by cclist＠sydex.com

I was cleaning some bookshelves in my office and discovered a 3.5" DS2D diskette with the diagnostic program GRIDSCAN (for early-ish Grid laptops). If anyone wants it, I've posted a self-extracting diskette image at: http://www.sydex.com/temp/gridscan.exe I'll leave it up for a week or so. Thanks, Chuck

18 years, 5 months

1
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NEC H03 APC III

by vwsage＠adam.com.au

Hi, I have an old NEC H03 APC III that has the inbuilt twin 8"floppies & colour screen. I have blown the High Tension transformer on the board to the left of the VDU. Wondering if anyone has parts for this old beastie. I used it to run EZCAM for 2axis CNC machining & would love to get it going again.

18 years, 5 months

2
1
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Anyone got a NEC APC

by trebor72＠execpc.com

I got my NEC APC running and was able to create a floppy that boots with Seattle Dos 2.0 on it. Most of the Programs seem to run. But if they don't then I overlay them with the ones from my MS-DOS 2.0. Strangly the dates on both Systems are really close; Late 1982 for the MS-DOS and early 1983 for SCP-DOS Got to figure out how to put a Boot for my CompuPro 816 on a floppy so I can boot to Dos on the CompuPro I may need a replacement 8" drive for one of my Two APC's TIA Bob in Wisconsin

18 years, 5 months

2
1
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S100 archive?

by jfoust＠threedee.com

Does anyone recognize this archive as a mirror of other spots? http://maben.homeip.net:8217/static//S100/index.html It seems to be connected to majzel.com, registered to a Agata Majzel, Flat 22, 27 Hereford Road, London W2 4TQ. - John -- No virus found in this outgoing message. Checked by AVG. Version: 7.5.518 / Virus Database: 269.21.7/1327 - Release Date: 3/12/2008 1:27 PM

18 years, 5 months

2
1
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Plan 9, GNOT, 5620 terminals

by blstuart＠bellsouth.net

From: Jeff Jonas <jeffj at panix.com> > > From: "John Floren" <slawmaster at gmail.com> > > > I already have VMS on my Alpha and the VAX; if I can't get Research > > Unix on the VAX, I'll stay with VMS. The later additions to Research > > Unix evolved in some interesting directions which eventually led to > > Plan 9, the OS I develop for at work. > > Are you also using Inferno and Limbo? > The last I knew, Rob Pike was still active with Plan 9. > Can't you ask him directly since any Plan 9 user > ought to be a "close personal friend of ..." :-) > Or is all that gone with the Alcatel merger? You might want to check out the 9fans mailing list. There also one for inferno, though you'll see some inferno discussion on 9fans too. You can get to them at: 9fans-request at 9fans.net (used to be 9fans-request at cse.psu.edu) inferno-list-request at vitanuova.com As to the people, Rob, and some of the others, are at Google now. They still frequent the list, but aren't actively involved anymore. On the other hand, there are several who are still involved as well as a small, but strong community. And no, we're not all close personal friends. In fact, I haven't even met any of them. Before his retirement, Dennis was on the list and he would probably have a pretty good idea if any of the 8th-10th editions were still around. At least in the fall, he still had his office at BellLabs but I don't know if his email address there still works. BLS

18 years, 5 months

1
0
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MMC Replay and RR-Net for C-64

by healyzh＠aracnet.com

The following eBay seller has a few MMC Replay's and RR-Net's available for the Commodore 64. http://stores.ebay.com/Reds-Retro-Computing-Extravaganza I've not dealt with this seller before, but I just finished ordering mine from him, so should hopefully have it sometime next week. I'm excited to get it, as the new MMC Replay (the MMC64 and Retro Replay carts combined into one) allows mounting of D64 and D71 images. Not quite as good of a solution as the 1541-III would be, since it won't allow you to use a REU, but I don't own a REU anyway. If you're like me and had wanted to get the MMC64 and Retro Replay, but had never managed to get one, the MMC Replay looks to be a pleasant surprise. It has new features, and is supposed to be more compatible with the C64 and C128's. More details and the manual can be found here. http://www.vesalia.de/e_mmcreplay.htm 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/ |

18 years, 5 months

5
11
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Anyone collect Compugraphic equipment?

by wendywally＠msn.com

HI, I see your posting from over a year ago. My dad has a Compugraphic Editwriter from 1978? that he wants to sell or a very nominal price. Do you have any idea where I can start looking for an interested party? Thanks Wendy

18 years, 5 months

1
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