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

by jnc＠mercury.lcs.mit.edu

> From: Allison > FYI this is the same problem designers hit with DRAMS back 40 years ago. This didn't ring (pun not intended) a bell for me; can you say a bit more? > From: Chuck Guzis > I'll offer a suggestion that if your SD card *must* be a significant > distance from its host Like I said, this is a pre-prototype; on the production units, there will be _no_ cable. The SD socket will be about 1-2" from the FPGA. > From: Dwight Kelvey > this behavior on my PDP-8/e where a 7474 flip flop chip was bad. The > input looked great and the output was "half baked" There's no chip at all on the driving end of the line (just that 470K resistor); we see this with the SD card _unplugged_. And we see the exact same thing on several lines. I'm still not clear, from the discussion, how exactly that nice 'square-wave' interference is happening - could it be capacitative crosstalk? (I'd have thought capacitative cross-talk would be inverted - driving a positive voltage on one 'side' of the 'capacitor' would, I would think, induce an oppposing voltage on the other. But I'm clearly no EE! :-) Noel

8 years, 11 months

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Anyone want a Sun T-shirt?

by cclist＠sydex.com

It's what, 27 years old... Trying to de-junk my clothes closet, I ran across an XL t-shirt bearing, on the front, a image of a ladybug with a red circle and bar across is and the legend "Getting out the last bugs". On the back, it has the Sun logo and "SunStruck 4.1.89 (Wanda)". It's in decent condition and probably dates from the time my wife worked at Sun, even though she had nothing to do with the project in question. Anyone want it? Pay for first-class mail (I'll stuff it into an envelope) and it's yours. Otherwise, it goes to Goodwill. --Chuck

8 years, 11 months

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Cross-talk square-wave?

by jnc＠mercury.lcs.mit.edu

Hi, a question about generic analog stuff. In the process of getting SD cards to work, Dave is seeing square-wave noise on a line. (1V of square wave, with pulses about 400ns long, running at 375kHz.) The line runs through a flat cable of modest length, along with other signal-carrying lines. (No, we were not smart, and didn't put ground lines between each pair of signal lines!) Could cross-talk cause this kind of noise? We would have thought that you'd only get spikes, associated with the rising and trailing edges of a signal in a parallel wire, not a whole square-wave. During the constant-current period in the middle of the pulse, there shouldn't be any cross-talk? Is there some mechanism I/we don't understand that could do that? (My guess is there's a leakage path in the circuitry on one end or the other, not cross-talk in the cable, but...) Thanks! Noel

8 years, 11 months

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Wyse keyboards and their variants

by sales＠elecplus.com

Wyse, Link, etc. Does anyone still use these on actual terminals? I have some guys coming to scrounge on Saturday, and they want them for is to desolder the switches. If you need some for actual use, please let me know the exact model you want so it does not get parted out. Cindy Croxton Electronics Plus

8 years, 11 months

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Floating point routines for the 6809

by spc＠conman.org

Some time ago I came across the MC6839 ROM which contains floating point routines for the 6809. The documentation that came with it stated: Written for Motorola by Joel Boney, 1980 Released into the public domain by Motorola in 1988 Docs and apps for Tandy Color Computer by Rich Kottke, 1989 What I haven't been able to find is the actual *source code* to the module. Is it available anywhere? I've been playing around the the MC6839 on an emulator but having the source would clear up some issues I've been having with the code. -spc

8 years, 11 months

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QIX game on PDP-11

by henk.gooijen＠hotmail.com

Hi PDP-11 game players ? I found that the famous QIX game was ported to the PDP-11 !! See http://imgur.com/a/gtPfh Back in the days, I spend quite a few Guilders on this addictive game. Does anybody have a lead to the software? That would be awesome! Thanks, Henk

8 years, 11 months

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Cross-talk square-wave?

by jnc＠mercury.lcs.mit.edu

> From: Eugene (W2HX) > I am still not convinced it is coupling at all. ... I just don't think > you can get square waves from square waves. ... > it is even harder to believe one could successfully couple a square > wave onto such a transmission line unless the signal is actually being > asserted on the line at a low impedance ... > Looking at this picture ... this shows exactly what I would expect to > see with cross talk the little glitches on the CS line that correspond > to edges on the clock signal. Exactly. That sort of cross-talk we understand (and have seen before). But a square wave? How can that be? That was the motivation for my original post. It's not super-critical to understand, because like I said, this is on a pre-prototype, and the actual unit will be arranged nothing like this (no cable, etc, etc), so we're just going to fix this with whatever kludge makes it go away, so we can focus on the things we really do need to work on. But we'd still like to understand what is happening here, and how. Could cross-talk (of whatever form, inductive or capacitive) do this, or does this more or less have to be signal leakage (on the board at one end, or the other) somehow? Noel

8 years, 11 months

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Model 28 Teletypes in Edmonton, Alberta

by rlloken＠telus.net

On Wed, 29 Mar 2017, W2HX wrote: > I might have missed it, but did you offer this on the greenkeys list (or > would you like me to forward it?) they are tty enthusiasts. Eugene No, I have never been a member of the green keys list and there is no point in joining now. Punt the message to the green keys list if you can. I still have (because they are small and portable) a set of model 28 service manuals, a keyboard assembly, a print mechanism (a carriage assembly?), a box of unperforated five level tape rolls, and a few unused but quite elderly ribbons if anybody has a use for them. -- Richard Loken VE6BSV : "...underneath those tuques we wear, Athabasca, Alberta Canada : our heads are naked!" ** rlloken at telus.net ** : - Arthur Black

8 years, 11 months

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Model 28 Teletypes in Edmonton, Alberta

by rlloken＠telus.net

So, my ex-wife sent my Model 28 RO and Model 28 ASR (along with a Conn vacuum tube electronic organ) to the landfill yesterday. I am told by my son that they went to the Eco Station Reuse Area at either the Ambleside or kennedale Eco Station. So, in the unlikely event that somebody wanting a 28 tty and within travelling distance of Edmonton, Alberta reads this, those items are reported to be there for taking. Oh, and bring a truck and a very strong friend. -- Richard Loken VE6BSV : "...underneath those tuques we wear, Athabasca, Alberta Canada : our heads are naked!" ** rlloken at telus.net ** : - Arthur Black

8 years, 11 months

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Apple 1, Commodore 65, Enigma Machine, Inventor of C++

by cctalk＠snarc.net

"What do an Apple 1, Commodore 65, Enigma Machine, and the inventor of C++ all have in common?" "They all be at VCF East this weekend." You should go, too. ________________________________ Evan Koblentz, director Vintage Computer Federation a 501(c)3 educational non-profit evan at vcfed.org (646) 546-9999 www.vcfed.org facebook.com/vcfederation twitter.com/vcfederation

8 years, 11 months

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Cross-talk square-wave?

by jnc＠mercury.lcs.mit.edu

> From: Dwight Kelvey > Is there any load resistance at the end of the line? Yes, 270K to ground (i.e. pretty large). How does that have an effect on whether cross-talk can create a square wave? Sorry, I'm not understanding. Noel

8 years, 11 months

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Cross-talk square-wave?

by jnc＠mercury.lcs.mit.edu

I should mention that this is a pre-prototype; the final thing won't have a cable at all; so this isn't a fundamental issue with the design (if it is cross-talk). And the SD card isn't even plugged in when we see this - if it is cross-talk, it has to be some other signal carried in the cable. We're just trying to figure out how cross-talk can possibly produce an induced square-wave. Noel

8 years, 11 months

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PSU protection with resettable polyfuse

by binarydinosaurs＠gmail.com

Hi folks, The PSU for my Executel 8085 system is an Astec AC8151-01 40W 5A unit that puts out +5/+12/-12V. A while back somone suggested using an ATX PSU in its place which TBH I'd forgotten about untl I saw a breakout board that you plug a 20 or 24 pin ATX supply into and it terminates each rail in whatever you choose to solder in. ukp8, rude not to :) My only worry is an ATX PSU is capable of putting out a lot more than 5A if it goes wrong so I'd like to protect each rail with an appropriate fuse. Any downsides to resettable polyfuses? Cheers, -- adrian/witchy Owner of Binary Dinosaurs, the UK's biggest home computer collection? www.binarydinosaurs.co.uk

8 years, 11 months

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pile of gear for sale (DEC, Sun, PC, ephemera, v.35 cables, etc etc)

by akb+lists.cctalk＠mirror.to

I have about four or five hundred things I'm ready to stop owning. I'm in Boston. If anyone wants a number of objects, I could deliver to VCF East this weekend. Inventory list at: http://threefingered.com/2017_inventory_3.html I have someone interested in getting all of the TK-50s, OSF/1 and Digital Unix CDs, and some of the VME boards, so those things might not be available. Contact me at decruft @ mirror.to please. Items I'd especially like to find good homes for are the DECNIS cables and the Adak ISDN box, anyone interested in those items is welcome to them for cost of postage and a good story about why you want it.

8 years, 11 months

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Acclaim Entertainment Indy (with data, emails, etc) on eBay

by mj＠mjturner.net

Hi, I came across this on eBay today: www.ebay.com/itm/162446083760 To quote from the listing: Own a piece of gaming history! This Indy workstation was once owned by Acclaim Entertainment, the legendary game publisher, and was liquidated at Acclaim's bankruptcy sale in 2004. It sat untouched in a Brooklyn warehouse for more than a decade before being recovered last year. This Indy, "pup," was used for internal Acclaim business operations at its headquarters in Glen Cove, NY. It features user account information and internal company files for a number of Acclaim employees: Andy Skalka: More than a hundred e-mail messages about Acclaim IT operations (see photos) Danielle Papsidero: More than five hundred e-mail messages (see photos) Rob Zimmelman: Image sequence for Dragonheart game combat EVa motion capture editing software (unlicensed) BioMotion motion capture editing software (unlicensed) Motion captured animation data (Dreamworks, baseball, Batman, etc.) Licenses: various expired and/or inactive licenses for Nichimen N-World and BioMotionEditor No affiliation with the seller, but it sounds like an interesting piece of history. Price is $199 BIN. Cheers, MJ -- Michael-John Turner * mj at mjturner.net * http://mjturner.net/

8 years, 11 months

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PDP-11/20 in Iowa (x3)

by jnc＠mercury.lcs.mit.edu

> From: Philipp Hachtmann > The 11/20 is the simplest 11 as far as I know. 'Simplest' in what sense? They certainly aren't the easiest ones to understand, with all that random control logic! The -11/04 is far easier to understand (for me, at least; YMMV). > From: Ethan Dicks > Was there ever a quad MOS memory board for the 11/20? I'm pretty sure there was never a UNIBUS quad memory card from DEC. > if anyone knows where to get a crate of 110V Boxer fans for around > $5/each, let me know New ones (not exactly the same as the originals, but the right size in the X/Y directions, if not identical in the Z, and 110V, with the same kind of power connector) are available on eBait for around $10 each. Look for "120mm 110V fan". Noel

8 years, 11 months

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Introducing the UUCP/Usenet Project

by wkt＠tuhs.org

Hi all, as part of the upcoming 50th anniversary of Unix in mid-2019, a bunch of people are working to rebuild the mid-1980s uucp/Usenet network using (real/simulated) period-accurate systems. To make things easier, we are simulating the dialup lines too. Details of the (nearly) turnkey software to do this is at: https://github.com/DoctorWkt/4bsd-uucp A map of what nodes we have so far is at: https://raw.githubusercontent.com/DoctorWkt/4bsd-uucp/4.3BSD/uucp.png If you are interested in participating, email me back. Cheers, Warren

8 years, 11 months

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Not Getting Emails

by robert.jarratt＠ntlworld.com

I have not had any emails from cctalk for 2 or 3 weeks. I went to my subscription details and saw that emails were disabled for me. I re-enabled them a few days ago but I still have not received any new emails. I can see that there is traffic by looking at the archives, and if I am not getting emails I hope to at least see this one appear in the archive and hopefully read replies there too. Is it just me? Regards Rob

8 years, 11 months

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PDP-11/20 in Iowa (x3)

by pbirkel＠gmail.com

http://www.vcfed.org/forum/showthread.php?56897-Came-across-three-PDP-11-20- units-today Need some lovin'. Not near enough to here . -----

8 years, 11 months

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Microdata and Decision Data haul from usual site

by jwsmail＠jwsss.com

I was able to get hold of a lot of boards which had been pulled from two Decision Data's and a Western Dynex 2400 RPM 10mb (probably) drive. The Dynex drive is similar to the RL02 and in fact was configurable to look like one in one of the options. Microdata would have used 24 sector packs vs. the 12 sector packs used by DEC, however. One of the CPUs is a pretty ordinary Data / Control set made by Microdata but with most of the etch and silkscreen modified to have Decision data info. I'm going to check with my Microdata people and see if anyone recalls if this was done by Microdata, or by DD themselves. There is a nice find however, a 2901 CPU 16 bit system cpu set and memory. It also runs in the 130 pin Microdata 1600 backplane, which makes it interesting. I'd love to get information and drawings as much as might be around for this set. May be donating most of it to add to my 1600 system @ the CHM, as there are boards here which I didn't have examples of to donate at the time. Will check with them after I fondle the boards for a while. It's cool to have an additional example of a possible Microdata 1600 type CPU, as this is one of my collecting areas. I'll be adding in titles and comments on the photos later, but here are photos of the boards for now. http://jim-st.blogspot.com/2017/03/microdata-decision-data-and-western.html Thanks Jim

8 years, 11 months

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Fwd: 50% DISCOUNT WEBSITE MANUAL & PARTS, ONE WEEK ONLY

by aek＠bitsavers.org

FYI -------- Forwarded Message -------- Subject: 50% DISCOUNT WEBSITE MANUAL & PARTS, ONE WEEK ONLY Date: Mon, 27 Mar 2017 06:53:02 -0700 From: Tucker Electronics Company <jtucker at tucker.com> To: aek at bitsavers.org 50% DISCOUNT WEBSITE MANUALS & PARTS, ONE WEEK ONLY Thanks for your purchases of manuals and parts last week and previously. We have slashed the selling price of most manuals on eBay by 50-75% in recent months. Our two websites www.etestmanuals.com <http://na02.mypinpointe.com/link.php?M=48182615&N=48220&L=22673&F=H> and www.etestparts.com <http://na02.mypinpointe.com/link.php?M=48182615&N=48220&L=22672&F=H> have many more listings than our eBay site ( teoutlet). Unfortunately, we have not been able to update pricing and shipping costs on these sites. These manuals and parts were purchased when we had a large repair and calibration lab. Many are one of a kind and subject to prior sale. We have over 43000 different listings on www.etestmanuals.com <http://na02.mypinpointe.com/link.php?M=48182615&N=48220&L=22673&F=H>. We have over 12,000 different listings on www.etestparts.com <http://na02.mypinpointe.com/link.php?M=48182615&N=48220&L=22672&F=H>. THE 50% DISCOUNT APPLIES TO ALL ITEMS LISTED ON THESE TWO SITES THAT ARE AVAILABLE STILL. The promotion will run from March 27th to April 1st. All items are subject to prior sale. We want to encourage you to buy especially the next two months. If you are most comfortable buying on eBay ( our site is teoutlet), please continue to do so. On US sales, we can make consolidated shipping quotes as needed. We are very motivated to sell although there are limits to what we can do on eBay. On our two websites listed above, we encourage you to make a list and contact us at jtucker at tucker.com <mailto:jtucker at tucker.com> regarding consolidated prices and shipping costs. Our websites can be used to look equipment up, but not to take advantage of the 50% discount prices this week. We can send you PayPal invoices for any purchases not done on eBay. In all cases you have the buyer protection of PayPal. We can also take Credit Cards. Our phone number is 2143488800. We do prefer email to jtucker at tucker.com <mailto:jtucker at tucker.com> as most questions about manuals require research and can?t be handled by a phone call. Please keep in mind that quantities are limited on the majority of listings and everything is subject to prior sale. SOME EQUIPMENT PROMOTIONS FOR THIS WEEK ONLY: 3 each Agilent-HP 6031A Power Supplies, 0-20V, 0-120A, 1000 watts with manual These have been TESTED and are on eBay at $750 regular price. $550 each this week only by direct purchase. 3 each Tektronix P5205 High Voltage Differential Probes with All Accessories. Regularly listed on eBay at $550. Price for this week only of $350 each by direct purchase. Electro Scientific Industries DT72A Standard Decade Transformer. Regular price of $750. Priced to sell this week for $550. Thanks again for your business and we look forward to hearing from you soon. Jim Tucker Tucker Electronics Company 11448 Pagemill Road Dallas, TX 75243 jtucker at tucker.com <mailto:jtucker at tucker.com> 2143488800 ------------------------------------------------------------------------------------------------------------------------ Sent by Tucker Electronics Company | 11448 Pagemill Road, Dallas, TX 75243 Sent to: "aek at bitsavers.org" | You are subscribed to "Websites sale list" Change your preferences / opt out <http://na02.mypinpointe.com/unsubscribe.php?M=48182615&C=e6e8ac0e5788770207…> www.pinpointe.com <http://na02.mypinpointe.com/link.php?M=48182615&N=48220&L=39695&F=H>

8 years, 11 months

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STC 2920 tapedrive schematics

by kspt.tor＠gmail.com

On 24 March 2017 at 18:40, Camiel Vanderhoeven via cctech <cctech at classiccmp.org> wrote: > Does anyone have schematics for an STC (StorageTek) 2920 reel-to-reel > tapedrive?[..] That drive was discussed on the list some time ago. All the docs should be available on bitsavers by now, although I don't remember if it's under 'stc' or 'storagetek' or both.

8 years, 11 months

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[VideoMagia] Reparando um Vectrex

by kspt.tor＠gmail.com

On 24 March 2017 at 16:34, Alexandre Souza via cctalk <cctalk at classiccmp.org> wrote: > Well...there is some description in english, google translate is a very > useful tool and the post has a pertinent video. I cannot view it as spam. > Anyway...sorry for bothering :) > > Enviado do meu Tele-Movel > > On Mar 24, 2017 12:25 PM, "Paul Koning" <paulkoning at comcast.net> wrote: > >> It sure has the signature of spam. A link to some random place, without >> explanation of what it is, text in Portuguese when the list uses English... Your spam-o-meter isn't accurate.. mine didn't trigger. It isn't spam, so it's clearly functional. Subject is 'Reparando um Vectrex', which hardly needs any additional translation. Body said 'New post on blog'. Blog looks good. Poster is Alexandre, old-timer on the list. All items ticked OK, all good.

8 years, 11 months

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MC68K's on DEUNA's

by jnc＠mercury.lcs.mit.edu

> From: Bill Gunshannon > I doubt Motorolla was in the business of custom making different size > chips, even for DEC. So, that triggered a question in my mind: why was DEC using the 68K on this board, anyway? They had plenty of in-house chips the could have used, e.g. the J11. The MC68000 had only a 16-bit bus, so it's not that dissimilar in capabilities. Why buy out? Did Motorola offer them a price they couldn't resist, or what? Noel

8 years, 11 months

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Wanted: AT&T 3B2 Ethernet Card ROM images

by lists＠loomcom.com

I'm trying to track down ROM images from AT&T 3B2 expansion cards. I've started with the EPORTS serial card, which I have. What I'd love to find is the ROM from the NI Ethernet card. Not all ROMs were socketed. Freqently they were soldered, so I know that getting these probably won't be easy. If I had an NI card of my own I'd desolder the ROMs, but alas, I do not. If you have these ROMs, are willing to image them, or -- and this is a real long shot -- if you're willing to let me borrow a card for a while, I'd greatly appreciate hearing from you. Best Wishes, -Seth -- Seth Morabito web at loomcom.com

8 years, 11 months

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booting os/8

by w2hx＠w2hx.com

Hi folks, I have a PDP-8/e that I've been working on. I have completed construction of AK6DN's RX01/02 emulator. I got to the step tonight where I was trying to boot an OS/8 disk image and nothing was happening. I realized that I do not have the bootstrap diode board in my 8/e so begin the bootstrap triggered by the "SW" switch. Does anyone have the program I can toggle in for the bootloader? What I found is somewhat confusing. Here is a discussion on this topic. https://groups.google.com/forum/#!searchin/alt.sys.pdp8/RX01$20boot|sort:re… It seems one fellow was attempting to edit/improve the bootloader of another fellow. I was wondering if anyone has distilled this into something simple. At the moment, I care only about booting from RX01-Disk0. Any pointers greatly appreciated. Thanks Eugene W2HX

8 years, 11 months

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For Sale: STM Pied Piper "Portable Computer"

by sellam.ismail＠gmail.com

I have for sale this fine STM Pied Piper, Z80 CP/M machine from Canada circa 1983. Please see details here: http://www.vcfed.org/forum/showthread.php?56872-STM-Pied-Piper-Portable-Com… Thanks! Sellam

8 years, 11 months

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Re: Extracting files off “unknown” 8 inch disks. Any thoughts…

by barythrin＠gmail.com

For the record, I and I'm sure lots of others look forward to this blog of experience. -------- Original message --------From: Terry Stewart via cctalk <cctalk at classiccmp.org> One other question regarding using this MS-DOS 486 to run an 8 inch floppu

8 years, 11 months

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MC68K's on DEUNA's

by jnc＠mercury.lcs.mit.edu

So all the DEUNA's I've seen have L10 (ceramic package, 10Mhz) 68K's in them. Has anyone tried using anything else, and did it work? I _assume_ an x12 would work, but until someone has acutally tried it... The Pxx's (plastic packaging) might not work - according to the datasheet, they are 2mm wider than the ceramics (why, I have no idea - it probably means they aren't interchangeable, which makes no sense at all to me). Noel

8 years, 11 months

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GImix Ghost Video Board

by vintagecomputer＠bettercomputing.net

No.. mine has a 2513 character generator.. the one in the ad uses ram based character generation. ?Based on IC dates my board looks like mid to late 70s.. a fair bit earlier than that one. Sent from my Samsung device -------- Original message -------- From: dave.g4ugm at gmail.com Date: 2017-03-24 2:16 AM (GMT-08:00) To: 'Brad H' <vintagecomputer at bettercomputing.net>, "'General Discussion: On-Topic and Off-Topic Posts'" <cctalk at classiccmp.org> Subject: RE: GImix Ghost Video Board Is it one that's in the catalogue here:- http://bitsavers.trailing-edge.com/pdf/gimix/Gimix_Catalog_Jun82.pdf Dave > -----Original Message----- > From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Brad H via > cctalk > Sent: 23 March 2017 23:58 > To: 'General Discussion: On-Topic and Off-Topic Posts' > <cctalk at classiccmp.org> > Subject: GImix Ghost Video Board > > Hoping someone might be able to help me on this. > > > > I got a Gimix Ghost SS50 video board today and was trying to find a manual. > I'm sure these were used in Gimix's own ghost systems but the very limited > info I've come across out there suggests they may have worked with any > SS50 system.? It basically provides a direct composite video feed out from the > computer, I assume bypassing the need for a terminal.? I plugged it in and > fired it up on my SWTPC 6800 and it is working - I think - it generates a full > screen of readable random characters.? However it does not put up anything > from the computer - that still goes out via terminal.? I'm assuming Ghost > systems were wired up somehow to use this.. I'm hoping to find a manual > that explains how.? I don't see a keyboard interface for it anywhere so maybe > this went along as a complete Ghost system with hardware I don't have. > > > > Thanks if you have anything! > >

8 years, 11 months

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MC68K's on DEUNA's

by jnc＠mercury.lcs.mit.edu

> From: Bill Gunshannon > Considering that I have never seen any sockets that were 2mm different > in width ... I really can't imagine any CPU not fitting. I think you're right. I took another look at the drawing, and I'd been looking at the package width dimension: there's also a separate pin-pin distance (horizontal), and that _is_ the same for plastic and ceramic. Ooops! Sorry. Noel

8 years, 11 months

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MC68K's on DEUNA's

by jnc＠mercury.lcs.mit.edu

> From: John Wilson > I think this is DELUA? Yes, that's right - sorry! > I'm getting old ... could have it wrong. No, _I_'m the one who's getting old! (But in this case, that's not it - I always get the names of those two mixed up!) > I'd be inclined to just try it. I hadn't bought anything yet... :-) In particular, there's a source of really cheap P12's, but if the 2mm width difference means the Pxx's won't fit, no use paying good money for them, right? > the definitely-fried CPU (right?) that's in there now? The definitely-missing CPU that's not in there now, actually! ;-) Noel

8 years, 11 months

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STC 2920 tapedrive schematics

by camiel.vanderhoeven＠vmssoftware.com

Does anyone have schematics for an STC (StorageTek) 2920 reel-to-reel tapedrive? I?m trying to solve a tape-loading issue that seems to be power-supply related, and some schematics would be very handy right now? Camiel.

8 years, 11 months

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Looking to rehome an Atari ST Colour monitor

by bulk＠blit.ca

Hi folks, I have an Atari colour monitor for the ST series of computers that I'm looking to rehome. Model number is SC 1224, Version 2. I've never attempted to power it up and have no idea if it works. It's free to a good home, provided I don't have to put in a lot of effort. (I'm currently in the middle of packing for a move; I have very little spare time or energy.) I'm in the Toronto area. If anyone wants it, let me know. --Chris -- Chris Reuter http://www.blit.ca "Oh God Lem, you're using science for no good. We took an *oath* we would try to do that less." --Better Off Ted

8 years, 11 months

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More interesting (?) stuff from my attic

by bill.gunshannon＠hotmail.com

I have a couple more items for the auction block. Real, original, in good shape: DECWRITER III - LA120 OPERATOR REFERENCE CARD DIGITAL Alpha Architecture Handbook - Special Announbcement Edition - February 1992 - PRELIMINARY INMOS Limited occam 2 Reference Manual (ISBN: 0-13-629312-3 Prentice Hall) Any of them should fit in a USPS Flat Rate Envelope so figure less than $10 postage. bill

8 years, 11 months

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GImix Ghost Video Board

by vintagecomputer＠bettercomputing.net

Hoping someone might be able to help me on this. I got a Gimix Ghost SS50 video board today and was trying to find a manual. I'm sure these were used in Gimix's own ghost systems but the very limited info I've come across out there suggests they may have worked with any SS50 system. It basically provides a direct composite video feed out from the computer, I assume bypassing the need for a terminal. I plugged it in and fired it up on my SWTPC 6800 and it is working - I think - it generates a full screen of readable random characters. However it does not put up anything from the computer - that still goes out via terminal. I'm assuming Ghost systems were wired up somehow to use this.. I'm hoping to find a manual that explains how. I don't see a keyboard interface for it anywhere so maybe this went along as a complete Ghost system with hardware I don't have. Thanks if you have anything!

8 years, 11 months

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Re: Extracting files off “unknown” 8 inch disks. Any thoughts…

by cctalk＠ibm51xx.net

Chuck, Are these dumb adapters that just convert 34 to 50 or do they so more then that? Thanks. -Ali -------- Original message -------- From: Chuck Guzis via cctalk <cctalk at classiccmp.org> Date: 3/23/17 1:59 PM (GMT-08:00) To: cctalk at classiccmp.org Subject: Re: Extracting files off ?unknown? 8 inch disks. Any thoughts? On 03/23/2017 01:32 PM, Mike Stein via cctalk wrote: > I was just going to suggest the same thing, but I see you (Tez) are > going the FDADAP route; more convenient for sure. > > But the majority of the 34- and 50-pin signals actually line up 1 to >? 1 when aligned pin 34 to pin 50; as a matter of fact I have a system > that uses the same 34-pin cable to connect to both, with just a > jumper or two to select 5 or 8" (the index signal is one IIRC). I've still got a couple of the Microsolutions "adapter cards" with 50- and 34-pin headers.?? They work in reverse as well. --Chuck

8 years, 11 months

3
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eBay: PDP-11/70 backplane?

by jnc＠mercury.lcs.mit.edu

> From: Pontus Pihlgren > The 11/70 backplane is wirewrapped. Oh, right you are! I don't know where my brain has fled to these days! It's actually an MJ11 (-11/70 core memory) backplane (I checked the part number - plus someone pointed out that you can see "MJ11" written somewhere). Noel

8 years, 11 months

3
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Extracting files off “unknown” 8 inch disks. Any thoughts…

by terry＠webweavers.co.nz

Hi, I?ve posted this to the VCF too?apologies for cross-posting. I?d be grateful for any guidance or comments anyone could give me on this problem. Guys in the building next door to me (a Science lab) have found some 8 inch floppy disks. They want to see what?s on them, or at least to archive them. They have no idea what machine these disks were used with, or the software was used to write the files. They may be CP/M, or some other format entirely. I?ve got little experience with 8 inch drives or disk formats. However I have got a bare 8 inch floppy drive (a Mitsubishi M2896-63 Half Height 8inch DSDD), and also a CP/M computer with 8 inch drives (A Panasonic JD-850M). I?m thinking it might be an interesting challenge/project to see if I can read these disks and get files off. However, I imagine given all the unknowns it won?t be easy?perhaps even impossible I see two possible approaches. One is to wire up the 8 inch drive to an MS-DOS machine. I?ll have to build/get a PSU for the drive so it can supply the necessary 24 Volts required. I?ll also have to make up a special drive cable. That info is available. In fact, Chuck gave me some tips a year or so ago. However, once I?ve got the drive successfully wired up, I then need to somehow analysis the disks to see what format they are in. Does anyone know of any software that will do this? I?m aware of disk22, for reading KNOWN CP/M formats but is there anything out there that will analyse a disk from scratch? Search the web has thrown up a few possibilies (MMCPC, Cpmtools) but I haven?t explored them at all. The second approach is to use the Panasonic JD-850M, and find a CP/M program that will analyse an ?unknown? 8 inch disk and read files from said disks into the CP/M environment. I?d somehow get the program into one of my Panasonic 8 inch disks (just how, I?ll need to figure out). I?d also need to figure out how to get the files out of that environment also. Anyway, has anyone else faced this kind of challenge and what are your thoughts? I don?t want to start unless I at least have some chance of success. I?m not hopeful. The more I read the more you seem to need real forensic skills and something like Kyroflux that works at low-level. Thanks Terry (Tez)

8 years, 11 months

7
17
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Seeking schematics/maintenance prints for DMB32/T1012 and H3033 distribution panel

by ethan.dicks＠gmail.com

Hi, All, With all the recent chatter on the VAX8200 on the simh list, I was motivated to dust mine off and do a little digging. I finally took the plunge and got a DMB32 (right now, all I have are the 4 built-in console ports) but while it was easy enough to find the 8.5"x11"-format user guide and technical manual which describe registers and installation and problem diagnosis, I also want the internal cable pinouts and schematics. I know it's harder to find post-Unibus-era C-sized prints since DEC stopped shipping printsets with every order, so I have to ask, does anyone have any schematics for either the T1012 module, the H3033 I/O bulkhead board, or both? I can likely quickly recreate the schematic for the H3033, it's 10 D-shell connectors (8x DB, 1x DC, 1xDD) and 6 30-pin ribbon cable connectors. Lots of signals, but lots of repetition. The D-shell pinouts are in the documenation I already have. The 30-pin connectors/BI fingers are not. But if the schematics are already available, I don't have to buzz one out. http://manx-docs.org/collections/antonio/dec/dmb32ug1.pdf http://manx-docs.org/collections/antonio/dec/dmb32td1.pdf ftp://bitsavers.informatik.uni-stuttgart.de/pdf/dec/vax/vaxbi/EY-5554E-SG-0002_VAXBI_Adapters_Student_Guide_Feb87.pdf Thanks for any new docs. -ethan

8 years, 11 months

1
0
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eBay: PDP-11/70 backplane?

by jnc＠mercury.lcs.mit.edu

This: http://www.ebay.com/itm/252820125010 looks like it might be an -11/70 backplane, but I'm too lazy to look up the part number. Noel

8 years, 11 months

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Re: Extracting files off “unknown” 8 inch disks. Any thoughts…

by terry＠webweavers.co.nz

>For what it's worth, unless you're intent on *writing* 8" single-density >floppies on the PC, the interconnect between the 8" drive 50-conductor >cable and the PC 34-conductor one is pretty straightforward. You don't >need a FDADAP board for that, although it's very convenient. Yes, and I'm all for convenience given that reading these things will be a challenge enough. I've ordered an FDADAP board and also an FDDC power converter. http://www.dbit.com/fddc.html http://www.dbit.com/fdadap.html Now I just has to wait a week or two for them to arrive! Terry (Tez)

8 years, 11 months

1
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Any faithful VT100 Emulators?

by barythrin＠gmail.com

This had kept the prices on that model a bit higher. The serial port while smaller is easy to hack a cable for most connections you need. I guess it's not that way for the other models? I hear it very often for the lx-200 pretty exclusively. -------- Original message --------From: Robert Feldman via cctalk <cctalk at classiccmp.org> Date: 3/23/17 11:20 AM (GMT-06:00) To: cctalk at classiccmp.org Subject: Re: Any faithful VT100 Emulators? Warren Toomey wrote: > are there any _good_ VT100 terminal emulators Another alternative is to get a used HP LX 200 palmtop computer. Its DataComm program has a good VT100 mode. Bob

8 years, 11 months

1
0
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Z-8000 something on eBay

by seefriek＠gmail.com

I don't have any idea what this is but it appears to have Z-8000 CPU+MMU chips. Perhaps an Onyx or S8000 CPU card? I know some folks here are in to that sort of thing. http://www.ebay.com/itm/NOS-Vintage-DSC-MP-4-EPC-Rev-D-K-Expansion-Board-Ca… KJ

8 years, 11 months

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Any faithful VT100 Emulators?

by r_a_feldman＠hotmail.com

Warren Toomey wrote: > are there any _good_ VT100 terminal emulators Another alternative is to get a used HP LX 200 palmtop computer. Its DataComm program has a good VT100 mode. Bob

8 years, 11 months

1
0
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what a beautiful and amazing place

by steve＠stephenmerrony.co.uk

Dear friend! We've visited a really cozy and beautiful place, I'm sure you'll love it too, check it out http://display.504-n-park.com/bdbc Thx, steve

8 years, 11 months

3
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Sun E10000 Historical Enquiry

by seefriek＠gmail.com

> Heck, I'd be fascinated to talk to anyone who purchased > the machines during their lifespan (1997-2001) and could tell me what you > used them for. Not the e10k, but Cingular Wireless used clustered e15k's as Oracle database engines. Dozens of them. Very impressive performance. KJ

8 years, 11 months

1
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Any faithful VT100 Emulators?

by kspt.tor＠gmail.com

On 22 March 2017 at 02:02, Warren Toomey via cctalk <cctalk at classiccmp.org> wrote: > Which raises the question, are there any _good_ VT100 terminal > emulators, especially for Linux? For any other platforms? xterm never gives me any problems. But the default terminal emulators of Gnome or KDE have some issues in my experience. xterm is always buried in the system somewhere though, and it works. I use it e.g. for accessing my old minicomputer which has a VT100 setting.

8 years, 11 months

5
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Any faithful VT100 Emulators?

by jwest＠classiccmp.org

Ethan wrote... ----- I'm following this thread because I too want a decent terminal emulator that works with a variety of vintage text editors (that seems to be the torture test) but for Linux or OS X. Putty seems to be a repeat suggestion but it's not for my platforms. ------ The most faithful vt100 emulation I've seen myself (not that I've done a big study or anything) is SecureCRT from Van Dyke. It is a commercial product, but about the only commercial product I've decided is worth the cost. I use it daily and pay for upgrades and new releases gladly. I do know that they came out with a version for OSX a while back. I expect that to be robust. There is a version for Linux, never tried that as I'm a FreeBSD zealot. There is also an iphone/ipad app by secureCRT and I've used it in a few pinches but never on a classic system. And the company has actually heard of VMS ;) Their support is off-the-charts. On more than one occasion I've emailed them asking for this or that... and several times I've seen it implemented on the next release. They actively listen and implement. If the linux and OSX and app versions are as good as the windows one... it's worth a shot. J

8 years, 11 months

1
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Any faithful VT100 Emulators?

by wkt＠tuhs.org

OK, so I don't have a real VT100, so I'm accessing an old 4.3BSD system with xterm and LXTerminal terminal emulators on Linux. Last night, for a laugh, I ran vttest from the 1980s and the terminal emulators performed woefully. Which raises the question, are there any _good_ VT100 terminal emulators, especially for Linux? For any other platforms? Cheers, Warren

8 years, 11 months

7
6
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VCF East - 10 days away!

by cctalk＠snarc.net

Friendly reminder that Vintage Computer Festival East XII is only 10 days away! March 31-April 2 in New Jersey. Two hands-on exhibit halls, a dozen tech talks, three keynotes, consignment sale, and you can visit the year-round Vintage Computer Federation museum while you're here. All the details are here: http://vcfed.org/wp/festivals/vintage-computer-festival-east/ ________________________________ Evan Koblentz, director Vintage Computer Federation a 501(c)3 educational non-profit evan at vcfed.org (646) 546-9999 www.vcfed.org facebook.com/vcfederation twitter.com/vcfederation

8 years, 11 months

1
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Suggestions why SCSI 80 drive w/ SCSI2 (50) adapter will not spin up ?

by pete＠petelancashire.com

Host is a HP 9000/382 Copied the orig drive using a linux box, adaptec 2940N and good old dd Then swapped drives, a unused 9 GB 80 pin with a Chinese 80 to 50 adapter. Did have to issue a spin up command and then copied the data to this drive again with dd. Powered all off, added a motor start jumper to the adapter and put it on the 9000/382. Motor will not start, added a jumper right on the drive, no spin. so .. any ideas what I'm doing wrong, or just try a different drive ? -pete

8 years, 11 months

4
6
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Timesharing/multiuser BASIC for MC68K

by jzatar2＠illinois.edu

I just wanted to share a little project I've been working on, it's an adaptation of Lee Davison's EhBASIC to become a timeshared multiuser BASIC. There's still a bit more to do, but here's a video of it in operation: https://youtu.be/SAJpHiBPMcQ In that video, it's only running 3 sessions (I had no convenient 4th terminal) but it's capable of running 4. It is a very very simple preemptive multitasking 'kernel' providing I/O services and performing periodic context switches for the instances of the interpreter. It only runs a fixed number of processes, and all the process memory is statically allocated. EhBASIC lends itself well to this, the code is position independent by design, and the memory range is passed in. Everything is dereferenced relative to the 'start of memory' pointer. This means no need for an MMU or relocation. I'm hoping to set this up at VCF MW in September, running 4 terminals. More info on the hardware I'm using is available here: https://hackaday.io/project/6150-beckman-du600-reverse-engineering Pictures: https://www.dropbox.com/sh/uw6cjqigk2sdwdy/AAAwP55aelyzrYeP1HVUDdMqa?dl=0 And another software project I'm working on as well (a ROM monitor program): https://github.com/jzatarski/Joe-Mon

8 years, 11 months

4
3
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MUMPS in the news

by tshoppa＠wmata.com

http://www.politico.com/agenda/story/2017/03/vista-computer-history-va-cons…

8 years, 11 months

2
1
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Introducing the UUCP/Usenet Project

by wkt＠tuhs.org

Camiel wrote: > What would the requirements for the system be? How often would it need to > be online? I added an answer here: https://github.com/DoctorWkt/4bsd-uucp#joining-the-growing-uucp-network For central sites (like decvax) that had a lot of connectivity, you will be expected to run them continuously. For edge sites which only dial in to one other site to exchange news and e-mail, you can run them whenever you want. It's mostly simulated sites right now, but I'd love to see some real systems come up and connect in. Not sure how to connect the simulated sites (using TCP for the dialup links) and the real sites. Cheers, Warren

8 years, 11 months

1
0
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TRS-80 Model 1 Expansion Interface question?

by wheagy＠gmail.com

I have a clean, and somewhat functional expansion interface that I just tested over the weekend. Without the EI connected, the model 1 reports ~16K RAM and with the EI the model 1 reports ~48K, so the RAM seems OK. But, the FD1771 IC, for some reason, was removed from an otherwise apparently functional EI. http://imgur.com/a/3NzOh Is there any reason why this chip would be removed? I see a number of them on ebay for around $25. The expansion interface hardware manual indicates it is an FD1771B-01, but the service manual indicates a couple possibilities....FD1771 A/B -01 -11. Any considerations to look for here? Thanks, Win

8 years, 11 months

5
5
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Looking for article: microprogrammed DIY TTL calculator

by jacek.greniger＠gmail.com

Hi, Two years ago I've found scans in PDF with the article (dated 197?, I don't remember) describing DIY TTL-based calculator. This was microprogrammed machine (if I remember correctly microproprogram was "stored" in the diode array). It has LED display and possiblity to calculate square root. Definitely not talking about EDUC-8 computer from 1975. I think this calculator was published a little bit earlier. Unfortunately I'm no longer able to find it. Does anyone associate the name of that magazine? Regards, Jacek

8 years, 11 months

3
2
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Pair of Twiggys

by jnc＠mercury.lcs.mit.edu

> From: geneb >> When people decided Steve Jobs had become a god? > Right about the time that whole "computer for the rest of us" started... Yes, of course: nobody had thought of a cheap personal computer before him. (Which reminds me, does the CHM have a Datapoint 2200? If not, we really out to try to round one up for them.) Or even a personal computer. (Ditto for the LINC.) Although I suppose you might have been talking about the software. I mean, without that whole display/windows/menu/mouse thing he invented, to allow ordinary people to use a computer, where would we be? Look, I fully admit that Steve Jobs was a _very_ sharp person who had a _tremendous_ influence. (Every time I hear someone saying marketing people are useless - first up against the wall, etc - I reply 'No, only bad ones - which is a lot of them. The very best ones, like Steve Jobs, are worth their weight in triple-refined iridium. A _good_ marketing person can tell you what customers _want_. A _truly great_ one can tell you what they _need_, but don't yet even realize they do.') However, the people (and there are quite a few of them) who have gone way off the deep edge, and have turned him (and Apple) into some sort of overblown cult, just don't have a balanced perspective. There are plenty of people out there who deserve at least as much credit for the information society we now live in, who are almost totally unknown to the population at large; starting (probably) with Licklider. Noel

8 years, 11 months

13
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Looking for cassete basic rom code

by alexandre.tabajara＠gmail.com

Dear friends Is it allowed to request a ROM code? I lost my XT BASIC ROMS, can someone send me the code so I can burn it and replace on my XT? Thanks! Alexandre ---

8 years, 11 months

5
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Looking for cassete basic rom code

by billdegnan＠gmail.com

On Mar 19, 2017 12:47 PM, "Adam Sampson via cctalk" <cctalk at classiccmp.org> wrote: > > Alexandre Souza via cctalk <cctalk at classiccmp.org> writes: > > > I lost my XT BASIC ROMS, can someone send me the code so I can burn it > > and replace on my XT? > > minuszerodegrees.net has several versions of the XT ROM images, along > with lots of other useful service information for PC/XT/AT machines: > > http://www.minuszerodegrees.net/bios/bios.htm > > -- > Adam Sampson <ats at offog.org> <http://offog.org/> Has anyone made a ROM that runs BASIC and allows use of the disk drive to save on an IBM PC? This always bugged me that if you forgot to insert your dos disk before the computer powered up that one could not enter a basic command to tell the system to boot up from the drive without ctrl-alt-delete and wait....or to boot from the b drive, etc. Bill Degnan twitter: billdeg vintagecomputer.net

8 years, 11 months

2
2
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Dore' on FreeBSD today

by tingox＠gmail.com

FWIW, Dore'[1] doesn't compile out of the box on FreeBSD 10.3-stable: tingo at kg-core1$ uname -a FreeBSD kg-core1.kg4.no 10.3-STABLE FreeBSD 10.3-STABLE #0 r310083: Wed Dec 14 21:00:13 CET 2016 root at kg-core1.kg4.no:/usr/obj/usr/src/sys/GENERIC amd64 Result tingo at kg-core1$ make -f Makefile.ini World Building Release 6.1 of Dore. I hope you checked the configuration parameters in ./config/cf to see if you need to pass BOOTSTRAPCFLAGS. Sun Mar 19 22:31:44 CET 2017 cd ./config/imake; make -f Makefile.ini BOOTSTRAPCFLAGS="" clean; make -f Makefile.ini BOOTSTRAPCFLAGS="" rm -f ccimake imake.o imake rm -f *.CKP *.ln *.BAK *.bak *.o core errs ,* *~ *.a tags TAGS make.log \#* making imake with BOOTSTRAPCFLAGS= cc -o ccimake -O -I../../include ccimake.c ccimake.c:42:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int] main() ^~~~ ccimake.c:44:2: warning: implicit declaration of function 'write' is invalid in C99 [-Wimplicit-function-declaration] write(1, imake_ccflags, sizeof(imake_ccflags) - 1); ^ ccimake.c:45:2: warning: implicitly declaring library function 'exit' with type 'void (int) __attribute__((noreturn))' exit(0); ^ ccimake.c:45:2: note: please include the header <stdlib.h> or explicitly provide a declaration for 'exit' 3 warnings generated. cc -c -O -I../../include `./ccimake` imake.c imake.c:265:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int] main(argc, argv) ^~~~ imake.c:274:2: warning: implicit declaration of function 'init' is invalid in C99 [-Wimplicit-function-declaration] init(); ^ imake.c:275:2: warning: implicit declaration of function 'SetOpts' is invalid in C99 [-Wimplicit-function-declaration] SetOpts(argc, argv); ^ imake.c:278:2: warning: implicit declaration of function 'CheckImakefileC' is invalid in C99 [-Wimplicit-function-declaration] CheckImakefileC(ImakefileC); ^ imake.c:285:2: warning: implicit declaration of function 'AddMakeArg' is invalid in C99 [-Wimplicit-function-declaration] AddMakeArg("-f"); ^ imake.c:296:2: warning: implicit declaration of function 'cppit' is invalid in C99 [-Wimplicit-function-declaration] cppit(cleanedImakefile, Template, ImakefileC, tmpfd, tmpMakefile); ^ imake.c:300:4: warning: implicit declaration of function 'showit' is invalid in C99 [-Wimplicit-function-declaration] showit(tmpfd); ^ imake.c:302:3: warning: implicit declaration of function 'makeit' is invalid in C99 [-Wimplicit-function-declaration] makeit(); ^ imake.c:303:2: warning: implicit declaration of function 'wrapup' is invalid in C99 [-Wimplicit-function-declaration] wrapup(); ^ imake.c:307:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int] showit(fd) ^~~~~~ imake.c:315:3: warning: implicit declaration of function 'writetmpfile' is invalid in C99 [-Wimplicit-function-declaration] writetmpfile(stdout, buf, red, "stdout"); ^ imake.c:318:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ imake.c:320:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int] wrapup() ^~~~~~ imake.c:328:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ imake.c:345:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int] init() ^~~~ imake.c:361:8: warning: using the result of an assignment as a condition without parentheses [-Wparentheses] if (p = getenv("IMAKEINCLUDE")) { ~~^~~~~~~~~~~~~~~~~~~~~~~~ imake.c:361:8: note: place parentheses around the assignment to silence this warning if (p = getenv("IMAKEINCLUDE")) { ^ ( ) imake.c:361:8: note: use '==' to turn this assignment into an equality comparison if (p = getenv("IMAKEINCLUDE")) { ^ == imake.c:365:3: warning: implicit declaration of function 'AddCppArg' is invalid in C99 [-Wimplicit-function-declaration] AddCppArg(p); ^ imake.c:372:8: warning: using the result of an assignment as a condition without parentheses [-Wparentheses] if (p = getenv("IMAKECPP")) ~~^~~~~~~~~~~~~~~~~~~~ imake.c:372:8: note: place parentheses around the assignment to silence this warning if (p = getenv("IMAKECPP")) ^ ( ) imake.c:372:8: note: use '==' to turn this assignment into an equality comparison if (p = getenv("IMAKECPP")) ^ == imake.c:374:8: warning: using the result of an assignment as a condition without parentheses [-Wparentheses] if (p = getenv("IMAKEMAKE")) ~~^~~~~~~~~~~~~~~~~~~~~ imake.c:374:8: note: place parentheses around the assignment to silence this warning if (p = getenv("IMAKEMAKE")) ^ ( ) imake.c:374:8: note: use '==' to turn this assignment into an equality comparison if (p = getenv("IMAKEMAKE")) ^ == imake.c:379:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ imake.c:381:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int] AddMakeArg(arg) ^~~~~~~~~~ imake.c:389:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ imake.c:391:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int] AddCppArg(arg) ^~~~~~~~~ imake.c:399:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ imake.c:401:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int] SetOpts(argc, argv) ^~~~~~~ imake.c:479:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ imake.c:505:14: warning: cast to 'char *' from smaller integer type 'int' [-Wint-to-pointer-cast] LogFatal(s, (char *)i); ^ imake.c:527:27: warning: implicitly declaring library function 'strerror' with type 'char *(int)' fprintf(stderr, "%s: ", strerror(errno)); ^ imake.c:527:27: note: please include the header <string.h> or explicitly provide a declaration for 'strerror' imake.c:538:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int] showargs(argv) ^~~~~~~~ imake.c:544:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ imake.c:550:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int] CheckImakefileC(masterc) ^~~~~~~~~~~~~~~ imake.c:561:8: warning: implicitly declaring library function 'strncmp' with type 'int (const char *, const char *, unsigned long)' strncmp(mkcbuf, TmplDef, sizeof(TmplDef)-1)) || ^ imake.c:561:8: note: please include the header <string.h> or explicitly provide a declaration for 'strncmp' imake.c:573:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ imake.c:575:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int] cppit(imakefile, template, masterc, outfd, outfname) ^~~~~ imake.c:626:2: warning: implicit declaration of function 'CleanCppOutput' is invalid in C99 [-Wimplicit-function-declaration] CleanCppOutput(outfd, outfname); ^ imake.c:627:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ imake.c:629:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int] makeit() ^~~~~~ imake.c:662:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ imake.c:706:7: warning: implicitly declaring library function 'strcmp' with type 'int (const char *, const char *)' if (strcmp(ptoken, "define") && ^ imake.c:706:7: note: please include the header <string.h> or explicitly provide a declaration for 'strcmp' imake.c:747:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int] CleanCppOutput(tmpfd, tmpfname) ^~~~~~~~~~~~~~ imake.c:754:14: warning: using the result of an assignment as a condition without parentheses [-Wparentheses] while(input = ReadLine(tmpfd, tmpfname)) { ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~ imake.c:754:14: note: place parentheses around the assignment to silence this warning while(input = ReadLine(tmpfd, tmpfname)) { ^ ( ) imake.c:754:14: note: use '==' to turn this assignment into an equality comparison while(input = ReadLine(tmpfd, tmpfname)) { ^ == imake.c:755:7: warning: implicit declaration of function 'isempty' is invalid in C99 [-Wimplicit-function-declaration] if (isempty(input)) { ^ imake.c:762:31: warning: implicitly declaring library function 'strlen' with type 'unsigned long (const char *)' writetmpfile(tmpfd, input, strlen(input), tmpfname); ^ imake.c:762:31: note: please include the header <string.h> or explicitly provide a declaration for 'strlen' imake.c:775:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ imake.c:782:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int] isempty(line) ^~~~~~~ imake.c:819:7: warning: implicitly declaring library function 'strcpy' with type 'char *(char *, const char *)' strcpy(pend+1, pend+5); ^ imake.c:819:7: note: please include the header <string.h> or explicitly provide a declaration for 'strcpy' imake.c:915:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int] writetmpfile(fd, buf, cnt, fname) ^~~~~~~~~~~~ imake.c:923:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ 48 warnings generated. cc -o imake imake.o imake.o: In function `main': imake.c:(.text+0xb2): warning: warning: mktemp() possibly used unsafely; consider using mkstemp() rm -f Makefile.bak; mv Makefile Makefile.bak mv: rename Makefile to Makefile.bak: No such file or directory *** Error code 1 (ignored) ./config/imake/imake -I./config/cf -DTOPDIR=. -DCURDIR=. ./config/imake/imake: No such file or directory: Cannot exec /usr/libexec/cpp. Stop. ./config/imake/imake: Exit code 1. Stop. *** Error code 1 Stop. make: stopped in /zs/tingo/work/Dore-6.01 No, I haven't tried digging out the old FreeBSD port files from the archives yet. References: 1) https://www.ibiblio.org/pub/packages/development/graphics/Dore/ -- Regards, Torfinn Ingolfsen

8 years, 11 months

2
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Looking for windows 1.x for HP-150 touchscreen Also looking for Touchscre...

by COURYHOUSE＠aol.com

Yepper ...sure... I know that... But.... we need the physical artifact or at lest the box and a real manual to lay in the display. remember 90 percent of what I have to do here is for .... the visual! thnx Ed# In a message dated 3/20/2017 2:55:35 A.M. US Mountain Standard Time, cc at informatik.uni-stuttgart.de writes: On Mon, 20 Mar 2017, Ed wrote: > Looking for windows 1.x for HP-150 touchscreen Also looking for Look at the obvious hpmuseum.net site, it's there. Christian

8 years, 11 months

1
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Looking for windows 1.x for HP-150 touchscreen Also looking for Touchscreen II

by COURYHOUSE＠aol.com

Looking for windows 1.x for HP-150 touchscreen Also looking for Touchscreen II drop me a line offlist. Thanks Ed Sharpe archivist for SMECC In a message dated 3/20/2017 1:06:35 A.M. US Mountain Standard Time, cctalk at classiccmp.org writes: Probably you wanna say "original retail package" :) 2017-03-19 21:54 GMT-03:00 Sellam Ismail via cctalk <cctalk at classiccmp.org>: > I have for sale a complete copy of Windows 1.0 (release 1.01) in the > original retail pricing. Please check out my ad on the VCF forums for > complete info: > > http://www.vcfed.org/forum/showthread.php?56814-Microsoft-Windows-1-0-in- > original-retail-packaging-complete > > Thanks! > > Sellam >

8 years, 11 months

2
1
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FS: Microsoft Windows 1.0 in original retail package

by sellam.ismail＠gmail.com

I have for sale a complete copy of Windows 1.0 (release 1.01) in the original retail pricing. Please check out my ad on the VCF forums for complete info: http://www.vcfed.org/forum/showthread.php?56814-Microsoft-Windows-1-0-in-or… Thanks! Sellam

8 years, 11 months

2
1
0 0

LGP-30 Update

by coryheisterkamp＠gmail.com

Hey guys, figured it was time for an update on the LGP-30 resuscitation. Some further detective work found a leaky 1500uF cap in one of the B+ supplies which was causing the 'surging' issue on the scope. For good measure I replaced all six 1500 and 3000uF caps even though ripple was low. Better safe than sorry and if it means pulling that chassis and its covers again, all the better. I attempted to weigh it on my shipping scale, but it only registers to 100 lbs and the indicator flew right past that. There had been a small thermal event in the AC junction box that the twist lock connector mounts to, and I suspect it occurred pre-60's refurb. It's not too surprising as the wiring on the computer side is aluminum and the feed is copper. The box needed replacing but was a unique Hubbell variation of a std 4" box with special ears. I couldn't find anything even close to that at any of the supply houses online, probably because it violates today's conductor fill rules (it's only 1" deep but the socket consumes most of that depth and 75% of the area). I eventually settled on drilling/tapping a standard box and cleaned up the wiring. The sequencer unit is now working correctly after I found an NOS relay to R&R contacts with. The blower is still steady and quiet with its new bearings, and no issues (knock on wood) with the drum after greasing the end bearing, belt and 'tightening' up the tolerances on the timing and short register heads. Some good news- I now have three horizontal lines on the scope, rock solid and where they should be. I can get the occasional pattern for Instruction contents, but Order and Accumulator still aren't reading/writing/displaying. All in good time. http://radar58.com/LGP30/wp-content/uploads/2017/03/lgp.jpg Even better news is that the three timing tracks appear to be intact on the drum and the supporting hardware is working. http://radar58.com/LGP30/wp-content/uploads/2017/03/scope-e1489957963176.jpg (1, 2 and 3 correspond to S1, S2 and S3) Now to investigate those short registers... -Cory

8 years, 11 months

4
3
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FS: Ampro Little Board P5x, Pro-Log M900 PROM Programmer, Documation D150 Card Reader

by sellam.ismail＠gmail.com

8 years, 11 months

1
0
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FS: Heathkit ES-400 analog computer front panel

by sellam.ismail＠gmail.com

I have for sale a Heathkit ES-400 front panel (only). Please check out my ad on the VCF forums for full details: http://www.vcfed.org/forum/showthread.php?56811-Heathkit-ES-400-Analog-Comp… Thanks! Sellam

8 years, 11 months

1
0
0 0

8085 RESET

by witchy＠binarydinosaurs.co.uk

Hi folks, 8085-based phone system weirdness continues and I'm beginning to wonder if the PSU rails are all coming up in time for RESET to go high - given there's 4116 DRAMs in there isn't there supposed to be a proper power up order? While I look at using a 20-pin ATX PSU to run this machine temporarily I need a safe way to reset the CPU rather than constantly power cycling. The RESET line comes from an ICL7611 op-amp via an MC14081B through pins 1-4 of a 74LS04 and I need to pull it low for longer than 3 clock cycles. I wish I had a schematic to show! Cheers, -- Adrian/Witchy Binary Dinosaurs creator/curator Www.binarydinosaurs.co.uk - the UK's biggest private home computer collection?

8 years, 11 months

2
3
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LINCtape/DECtape Head Alignment

by michael.99.thompson＠gmail.com

> > Date: Sat, 18 Mar 2017 21:46:21 -0500 > From: Jay Jaeger <cube1 at charter.net> > Subject: Re: LINCtape/DECtape Head Alignment > > Curious: How are you measuring the signal from the head? Do you have > an honest to gosh differential probe, or are you using some other > technique? (If you have a differential probe, then the TU56 manual > indicates that you should see 10mv-12mv (the addition of the two paired > heads together), so as a first guess I am guessing you are looking at > the coils one at a time. > > The reason I ask is that the TU56 that I use most often has gotten a bit > cranky over the years. Generally I can read and write, but I do > typically see some errors - unacceptably many, and it *seems* that the > longer the machine is on, it seems the more mark track errors I get when > running the ZTCC?? diagnostic (test 3). > > I don't have a differential probe, and the A-B math function on my Rigol > DS2072 scope is not anywhere near fast enough (though maybe a firmware > patch which I have downloaded will help, but I doubt it will help > because their is a lot of HF noise on the signals when measuring > voltages this low). However, if I apply a 50KHz low pass filter on the > signal on the scope, then sometimes I can see a 5mv per coil signal > using an ordinary probe. I say sometimes because the scope seems to > have some firmware problems so it isn't consistent in its behavior. (I > have downloaded a firmware update that *might* help). > > I don't really doubt my heads at this point - certainly nothing is open > - I can measure each coil at about 1.5 ohms (3.0 ohms across both), but > it is something I would like to make sure I know how to do. > > Also, have you degaussed your heads? If so, how? I ask because some of > my symptoms could point that way (I have yet, for example, to test with > a tape, have it get worse, then go back with the machine "cold" and see > if it gets better - and if it doesn't, that could point to demagnetized > heads.) > > Thanks. > > JRJ > We used the procedure in the TU56 maintenance manual, and used two G888 modules to make the equivalent of the G500 described in the manual. The G888 modules really cleanup the high frequency noise mixed with the head signals. -- Michael Thompson

8 years, 11 months

2
1
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Extracting data from DEC VAX tape recordings

by will.pearse＠usu.edu

Hello, I'm sorry to bother you, but I was hoping you might be able to help me with a problem I'm having getting hold of some scientific data that's currently stored on DEC VAX magnetic tape. A colleague of mine carried out some ecological fieldwork ~30 years ago, and her results are stored on eight magnetic tapes (two of 7" diameter, one 8.5", and five 10.25"). The data would be incredibly useful to look at, as the study was looking at how restored mines changes over time (the study is somewhat described here; https://www.jstor.org/stable/20038221?seq=1#page_scan_tab_contents). If we could get these original data, we could compare how the mine is now with how it was then, which would be phenomenally useful to conservation biologists trying to conserve and restore damaged ecosystems. Do any of you have any ideas as to how I might get the data off this tape? I live and work in Utah (USA), but I would be willing to travel a little ways if it meant getting the things read off into a computer! Thanks again for your time, Will Pearse --- Need a phylogeny? Try phyloGenerator: original<http://willpearse.github.io/phyloGenerator/> or new version<http://willpearse.github.io/phyloGenerator2/> Measuring phylogenetic structure? Try install.packages('pez') Will Pearse<http://www.willpearse.com/> Assistant Professor of Biology, Utah State University Office: +1-435-797-0831 Skype: will.pearse

8 years, 11 months

3
2
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CF cards as storage - wear leveling

by jules.richardson99＠gmail.com

I just bought an IDE-CF adapter the other day with the intention of replacing the spinning rust in my disk imaging system (which is some early/mid-90s 80486-based thing). However, the CF entry on Wikipedia says: "Most CompactFlash flash-memory devices limit wear on blocks by varying the physical location to which a block is written. When using CompactFlash in ATA mode to take the place of the hard disk drive, wear leveling becomes critical because low-numbered blocks contain tables whose contents change frequently. Current CompactFlash cards spread the wear-leveling across the entire drive. The more advanced CompactFlash cards will move data that rarely changes to ensure all blocks wear evenly." ... I'm a little wary about the way it says "most CF cards", implying that there are some out there which don't do any wear-leveling at all. So, the obvious question: is there a way of knowing which cards are going to be good and which are useless as IDE replacements? Maybe by age, capacity, manufacturer? I'd prefer not to invest time into setting software up only to find that the card fails in a matter of weeks. cheers Jules

8 years, 11 months

6
5
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LINCtape/DECtape Head Alignment

by michael.99.thompson＠gmail.com

The RICM is working on the skew adjustment on a TU56 tape drive on a PDP-12. We only see a 5mV signal from the head, so when we flip the tape over we will only see 1mV. This is below the capabilities of my 'scope. The DEC skew adjustment procedure talks about using a DEC amplifier to boost the head signal to several volts. We are planning to make an equivalent amplifier using a modern Op-amp. It would be really convenient to have one of the Amphenol 133-022-03 connectors from a G851 Relay module on our amplifier so it would plug directly into the head cable. Does anyone have a DEC G851 module that we could remove the connector from? -- Michael Thompson

8 years, 11 months

3
2
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User group magazine scans for an orphan computer model

by terry＠webweavers.co.nz

I've been scanning some user group newsletters. Reading them today reveals just how important they were for orphan machines home computers like the EACA Colour Genie. Even if you're not interested in that model, they are worth a look as they do reflect the "user club" scene of the day. I'm assuming New Zealand was much the same as anywhere else in this regard. Somewhat quaint, they reflect a bygone era. http://www.classic-computers.org.nz/blog/2017-03-18-eaca-colour-genie-auckl… Terry (Tez)

8 years, 11 months

2
1
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FTGH Large amount of DEC/Misc Classic computer hardware

by COURYHOUSE＠aol.com

The New "CC Anonymous" Survey Form!! 20 QUESTIONS Assessment for Compulsive Hoarding & Cluttering 1. Are some living areas in your home cluttered? Y/N 2. Do you have trouble controlling urges to acquire things? Y/N 3. Does the clutter in your home prevent you from using some of your living space? Y/N 4. Do you have trouble controlling your urges to save things? Y/N 5. Do you have trouble walking through areas of your house because of clutter? Y/N 6. Do you have trouble throwing away or discarding things? Y/N 7. Do you experience distress throwing away or discarding possessions? Y/N 8. Do you feel distressed or uncomfortable when you can not acquire something you want? Y/N 9. Does the clutter in your home interfere with your social, work or everyday functioning? Y/N 10. Do you have strong urges to buy or acquire free things for which you have no immediate use? Y/N 11. Does the clutter in your home causes you distress? Y/N 12. Do you have strong urges to save things you know you may never use? Y/N 13. Do you feel upset/distressed about your acquiring habits? Y/N 14. Do you feel unable to control the clutter in your home? Y/N 15. Has compulsive buying resulted in financial difficulties? Y/N 16. Do you often avoid trying to discard possessions because it is too stressful or time consuming? Y/N 17. Do you often decide to keep things you do not need and have little space for? Y/N 18. Does the clutter in your home prevent you from inviting people to visit? Y/N 19. Do you often buy or acquire for free things for which you have no immediate use or need? Y/N 20. Do you often feel unable to discard a possession or possessions you would like to get rid of? Y/N Most hoarders will answer "yes" to at least 7 of these questions. In a message dated 3/18/2017 5:23:28 P.M. US Mountain Standard Time, cctalk at classiccmp.org writes: -------- Original message --------From: jim stephens via cctalk <cctalk at classiccmp.org> On 3/17/2017 9:01 PM, Peter C. Wallace via cctalk wrote: >>also significant pressure from SO to >> "get rid of that junk" >So far noone that matters has said anything >that dumb to me. It happens when your XYL gets the rank of Spousal Officer.

8 years, 11 months

2
1
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FTGH Large amount of DEC/Misc Classic computer hardware

by barythrin＠gmail.com

-------- Original message --------From: jim stephens via cctalk <cctalk at classiccmp.org> On 3/17/2017 9:01 PM, Peter C. Wallace via cctalk wrote: >>also significant pressure from SO to >> "get rid of that junk" >So far noone that matters has said anything >that dumb to me. It happens when your XYL gets the rank of Spousal Officer.

8 years, 11 months

1
0
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DEC items

by useddec＠gmail.com

Hi Peter, Sounds like a nice collection. Which PDP11s do you have? Thanks, Paul

8 years, 11 months

4
3
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Unix type OS things

by sales＠elecplus.com

You guys want me to list these? Manuals, software, Tandy Xenix 6000 binder with 8" floppies and manual? Some old (but sealed IBM 8" floppies for I don't recall what (not blanks). Cindy Croxton

8 years, 11 months

2
1
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AC magnetic field strengths

by aek＠bitsavers.org

I bought an AlphaLabs GM-2 Gaussmeter for another project, and measured the AC magnetic field strength touching these devices yesterday, since I really didn't have any idea beyond order of magnitude what they might be Handheld tape head demagnetizer: 40 Gauss GC Elec 9317 CRT degausing coil: 70 Gauss Audiolab TD-3 desktop bulk eraser: 1000 Gauss Inmac 7180 or RS 44-233A handheld bulk tape erasers: 2000 Gauss also the DC field of a 1/4" button super magnet like on the backs of clip on badges is about 3000 Gauss

8 years, 11 months

4
4
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I hate the new mail system

by cclist＠sydex.com

On 02/28/2017 05:21 PM, Jon Auringer wrote: > > Chuck, > > I had the same display issue. Uncheck "Show only display name for > people in my address book" under Tools-Options-Display-Advanced. Jon, Thanks for the hint! I'm using the Linux version of Thunderbird, so the setting isn't under "Tools"; it took me a bit of searching to find it. In the *nix version, it appears to be under Edit->Preferences->Display. That seems to have fixed things. Thanks again, Chuck

8 years, 11 months

22
50
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HP 9000/382 Questions

by w9gb＠icloud.com

Just threw out all of my HP/UX v9 training manuals from that era, last year. Reliable machine for the era when Intel 80386/80486 were the top processors. greg Sent from iPad Air

8 years, 11 months

1
0
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sealed packets of DOS 6.22 and Win 3.1

by sales＠elecplus.com

If anybody wants them: https://www.elecshopper.com/dos-6-22-and-windows-3-1-on-3-5-inch-floppy-disk ettes.html Cindy Croxton

8 years, 11 months

1
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I hate the new mail system

by kspt.tor＠gmail.com

On 17 March 2017 at 14:43, Philipp Hachtmann via cctalk <cctalk at classiccmp.org> wrote: > > > On 03/16/2017 10:07 PM, Mike Stein via cctalk wrote: >> >> I'm pretty confident that every member of the list appreciates the >> time, effort and whatever else you and certain others have >> contributed to keep this list humming as well as it almost always >> does; > > Full ack, of course! > > But the new addressing scheme still sucks, sorry. I still maintain that the change solved every issue I've had, reading with gmail. No more posts ending up in the spam folder unless I configured 'never send to spam' (which has its own issues), no more of the weekly or bi-weekly automatic de-registrations, and addressing (when replying) at the same level of difficulty as before (i.e. not much, just edit out what's not needed).

8 years, 11 months

4
3
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HP 9000/382 Questions

by pete＠petelancashire.com

Hello from a newbie to the list I've just acquired 2 HP 382's with expanders. Have not had the time to look inside them yet. End goal is to set one up as an instrument controller i.e. using the built in GPIB and potentially a 2nd GPIB card. One thing I do not have is a display, keyboard and mouse. A few question Is there a PS/2 or USB (yea long shot) adapter for the HPIL interface ? Does someone have a keyboard/mouse they a not beholding to, or know where there maybe one ? Once I get the opened up and take an inventory, anything I should look out for be trying to power one of them up ? Can one boot to a terminal on the RS-232 port. Until I find a kbd/mouse ? What would be optimum version of HP-UX to run on them ? -pete

8 years, 11 months

7
17
0 0

VCF Europe

by g4ugm＠outlook.com

Folks, Rod has spurred me on to pay a visit to VCF Europe. I wonder if any one else on the list is going. If so any thoughts on Hotels? I will probably only manage the Saturday! Dave

8 years, 11 months

2
1
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Looking for an Intel SRM

by camiel.vanderhoeven＠vmssoftware.com

Here?s a long shot, about as long as they get. I received an Intel iPSC/860 supercomputer, but it?s lacking the Intel SRM (System Resource Manager), without which the system is a boat anchor. The SRM is an Intel 386 desktop machine, with a SYP301 motherboard and a plugin card to connect it to the iPSC/860. There?s a cable coming from the iPSC with a 25-pin D connector, which I believe is the connection to the SRM. It?s not a regular serial port, but a bidirectional 2.6MByte per second connection. The interface card likely uses a bunch of Xilinx chips (the interface cards on the iPSC node boards do). I have not been able to find a picture of what the box looks like on the outside, so I have no idea. So, I?m looking for one of these, preferably one the owner would be willing to part with :-) Camiel

8 years, 11 months

2
1
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DEC frontpanel switch replica!

by hachti＠hachti.de

Hi folks, this might be quite interesting for the folks that miss front panel switch handles! As some of you might know I'm currently working (a bit) on a new batch of Omnibus USB boards. And I have announced that there will be a kind of handle for the boards this time... I went to my neighbour and showed him some bits and pieces. He has a nice little workshop for concrete artwork (https://www.fritzundfranz.com/) and spent a lot of time into perfecting his moulding skills. I gave him a pdp8/e yellow switch handle with broken axle (usual problem) to try what can be done. Today I came home and he gave me the piece saying that he was unable to replicate it. I took it (a bit frustrated) and stated that he has somehow ruined the surface... Haha! It was the replica! He told me that this was a first "fast" shot including a "rough" approximation of the colour. I was stunned! Here you can see pictures. Even the defects of the original have been replicated. https://www.dropbox.com/sh/sih4qrrw4o3zgbh/AACf7kY7MbGDLt5FYJgfI4kDa?dl=0 He told me that it was a bit difficult to get the holes at the side right. I think that it would be no problem if they'd be more shallow or even gone. * His material is less translucent than the original. Won't probably change. So a perfectionist could spot the difference. * He states that he can hit colors even better! (Think of the special colors!!!) * The axle stubs would be omitted and made of steel (something I already plan for repair of that weakest point) * He is able to produce flawless finish (remember: it's a raw prototype!) This is not my business. I told him that I'd ask around if there would be serious interest. He is not in vintage computing and does not work for free. So one piece would probably cost around 5-15 EUR each, depending on demand, color etc. Please give some feedback! Philipp :-)

8 years, 11 months

8
9
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Ardent Titan

by camiel.vanderhoeven＠vmssoftware.com

Last Friday, I finally received a shipment of 1980's minisupercomputers >from the US that I've been working on since September. One of the systems is an Ardent Titan, which to my knowledge was the first (mini-) supercomputer to come with an integrated high-end graphics subsystem (1280x1024 at 60Hz, hardware spheres, antialiasing, and cast shadows). After careful checking, I powered it on yesterday, and got as far as trying to boot it; unfortunately, the harddisk does not contain the OS, but I'm trying to get access to an installation tape. There's a full writeup about my efforts this weekend on my website: http://www.vaxbarn.com/index.php/42-repair/576-ardent-titan-power-on A description with some pictures of the Ardent can be found here: http://www.vaxbarn.com/index.php/other-bits/565-ardent-titan Uncrating pictures are here: http://www.vaxbarn.com/index.php/41-acquisitions/575-supercomputers-have-ar rived Anyone who knows anything about these machines, please contact me! Also, if you have access to installation tapes, manuals, brochures, anything related to these systems, please let me know. Kind regards, Camiel Vanderhoeven

8 years, 11 months

5
5
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Old Honeywell uPAC parts looking for a new home

by tpisek＠pobox.com

The uPAC modules have been claimed.

8 years, 11 months

3
2
0 0

Delay Lines (Was: Univac I memory tank)

by rickb＠bensene.com

Dwight wrote: > The Olivetti used a piece of wire for the delay line. The Programma 101 indeed used a delay line. Such delay lines use magnetostrictive means to push a torque pulse into one end of the wire, as well as detect a torque twist at the other end of the wire. Magnetostrictive materials are typically a metal alloy that lengthens or shortens depending on the polarity of an external magnetic field, and will also generate a small magnetic field if stretched or compressed. In a magnetostrictive delay line thin strips of magnetostrictive metal are attached to opposite points tangential to the circumference of the end of a nickel-alloy(typically) wire. These strips, for whatever reason, are typically called "tapes". Each tape has a small coil of magnet wire surrounding it, wound oppositely around each tape, such that when a short current pulse is sent into the coils, one tape momentarily lengthens, and the other tape contracts, causing a slight but sharp twisting torque to be applied to the wire. This acts to transmit a pulse of energy into the wire. The torque twist mechanically travels through the wire to the other end, where it causes one tape to lengthen slightly, and the other to compress slightly, which induces a small current pulse into the coils around the tapes, which can be amplified to match the electrical characteristics of the original pulse. Sending a current pulse through the coils in one direction causes the twist to occur clockwise, and the pulse going the other direction induces a counter-clockwise twist, allowing ones and zeros to be pushed into the wire as clockwise or counter-clockwise torque twists. The amount of time that elapses (delay) from the pulse being injected to being received at the other end of the wire is based on the metallurgy of the wire, and its length. The wire is capable of remembering some number of torque twists as bits, with a clockwise torque, for example, representing a one, and a counter-clockwise twist representing a zero. The wire was typically arranged in a spiral inside a metal housing. Silicone or rubber supports supported the wire without attenuating the torque pulses in the wire. In some cases, there were "taps" along the length of the wire that used the same transducer method to pick off bits at different delay periods. The use of such delay line technology in calculators arose out of the need to store a moderate number of bits to represent the working registers of the calculator. At the time, magnetic core memory was still quite expensive, integrated circuit technology was in its infancy and too expensive to use for mass storage in a calculator, and it was generally cost and size prohibitive to store the bits required in discrete transistor flip flop storage registers (though a few very early electronic calculators did use this method). Given that delay line technology had been used with success on computers (though the Univac I delay lines were very different than magnetostrictive delay lines), they were a low cost, relatively simple way to provide the small amount of storage required for an electronic calculator. A prime example of the use of magnetostrictive delay lines in a computer was the Packard Bell 250, a low-cost "personal" computer introduced in the early 1960's. The bit-serial nature of the delay line was ideal for a calculator, since a bit serial architecture is coincident with the most efficient way to make an electronic calculator, where raw speed is not a requirement, and minimizing the component count saves money. The serial nature of the delay line means that if a specific bit is needed, the logic must wait around for the bit to arrive at the end of the delay line. This slows down the operation of the device, but in the case of a calculator, where results are subject to human perception, 10s to 100's of milliseconds is well within the acceptable time for a calculation to occur. > I forget what the Dielh Combitron used but I know it used a two delay lines. One was for registers and the other was for lookup tables that loaded at turn on time from a metal tape ( as I recall ). The Diehl Combitron did use two separate delay lines, one for the registers(as well as learn-mode program storage) as mentioned, but the other one wasn't really for lookup tables, but instead stored the operating microcode that made the machine run. The microcode was indeed loaded from a punched metal tape at power-on time. The ingenious design of the Combitron was done by Dr. Stanley Frankel, a nuclear physicist who was deeply involved in the mathematical modeling that made the atom and hydrogen bombs possible. After the Manhattan project ended, he was involved in the design of quite a few computers and calculators. Notable computers that he designed were the Librascope-General Precision LGP-30, the aforementioned Packard Bell 250, and some design work on early General Electric computers. He also designed the Smith Corona/Marchant Cogito 240 (and follow-on Cogito 240SR) electronic calculator, as well as the Diehl Combitron. Many calculator companies used magnetostrictive delay line technology for storage in their earlier calculators, before the time that integrated circuits took over the storage duties. They included Friden(Singer) (all of their in-house designed machines used delay lines, e.g., 130, 132, 115x, 116x), Canon(which made machines for Monroe), Wyle Laboratories (WS-02 and Busicom 202, 207 and 2017), Olivetti (Programma 101 & follow-ons), Sony(early Sobax), Victor(1400-series), Monroe(EPIC 2000/3000, 820/820A), Diehl(which made machines for SCM and Victor), and Olympia. -Rick -- Rick Bensene The Old Calculator Museum http://oldcalculatormuseum.com

8 years, 11 months

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Pair of Twiggys

by jnc＠mercury.lcs.mit.edu

> From: Zane Healy > Good grief! When did Lisa stuff get so expensive? When people decided Steve Jobs had become a god? Noel

8 years, 11 months

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Oki 3305 disk drives

by wrm＠dW.co.za

Hi all OK, following up on my own post here. >I have a couple of Oki 3305BU 1/3 height 5 1/4" drives. > >On startup the motor spins and the heads load, but the heads don't >move. Also, my BIOS tells me I have a drive failure. > >On taking them apart for a bit of a lube I noticed they have EPROM >8748s inside. Could this be the problem, EPROMs lost data? This would >be a first for me, I have EPROMs from the seventies which are still fine. I caused (I have people working for me who are really good at this) the 8748 to be removed from the one PCB. Reading it in my Expro gives me sort-of random results. Looks like some bits are high, some are low, and some float all over the place. No two reads return the same data, but some bytes are constant over two or three reads and other bytes are constant over two or three other reads. Is this the way an EPROM would fail? Seems reasonable to me. Anyway, I guess I'm SOL unless I can find a working drive. As far as I can tell these were used in the Heath / Zenith 170/170 luggables, also in the Morrow Pivot maybe. Tony would probably just rewrite the firmware. It's only 1024 bytes, how hard can it be? :-) Seriously, I am thinking of reading each byte say 100 times, averaging that, and then sticking the whole thing through a disassembler. But it seems a bit of a mammoth task. W

8 years, 11 months

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Pair of Twiggys

by barythrin＠gmail.com

This statement is hurting my brain. I was never an Apple (company) user or fan but personally felt the Apple product line was hacker friendly before the Apple II c threatened to void your warranty if opened, then the Mac seemed to follow similar unfriendly EULAS. But then again I wouldn't have guess GUI would win the UI war either when it was so great to type exactly what you needed with minimal system resources. Admittedly my opinions seem to only satisfy myself ;-) You prefer Apple and expansions or Mac II? -------- Original message --------From: TeoZ via cctalk <cctalk at classiccmp.org> Date: 3/14/17 5:49 PM (GMT-06:00) To: geneb <geneb at deltasoft.com>, "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Subject: Re: Pair of Twiggys Jobs had to get fired for Apple to recall the expansion capabilities of the Apple II days and start making the Mac II series.

8 years, 11 months

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Pair of Twiggys

by barythrin＠gmail.com

-------- Original message --------From: Glen Slick via cctalk<cctalk at classiccmp.org> wrote: >> >> www.ebay.com/itm/122383386508 >> >> still a few hours to go, hovering at $20K > > >And the answer is $32,100.52 (plus $20.95 >shipping) Ugh.. they always get ya on the shipping.

8 years, 11 months

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Pair of Twiggys

by aek＠bitsavers.org

www.ebay.com/itm/122383386508 still a few hours to go, hovering at $20K

8 years, 11 months

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Pair of Twiggys

by vintagecomputer＠bettercomputing.net

I don't know if I'd pay $25k for Twiggys but I understand the impulse. ?The problem is, what happens when the novelty wears off? ?I also wonder what the long term value is as generations that experienced these things pass on to those who've never known a day withot a smartphone. That's a worry for another day though. ?For now.. I'm thinking about grabbing a shovel and going digging for Twiggy gold at a certain dump in Logan. Sent from my Samsung device

8 years, 11 months

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Photography, was Re: Pair of Twiggys

by kylevowen＠gmail.com

On Mar 14, 2017 5:24 PM, "Fred Cisin via cctalk" <cctalk at classiccmp.org> wrote: Ah, out of touch on that, as well! "But, you can do ANYTHING with Photoshop!" Yeah. right. Want a stabilization processor? Most of a ragged Beseler 45, plus a dichroic head that I never got around to rebuilding and mating? Movie film daylight developing tank? (motorized back-and-forth reel to reel 16mm, 35mm, but not large diameter reels) Fujinon desktop holography camera? (needs new laser tube) bellows for 35mm? tilt and shift? (I am keeping my Hama/Kenlock/Spiratone for now, but getting rid of the rest) Selling my Linhof and Tachihara soon. Just got through setting up a darkroom in my upstairs bathroom. Did some developing years ago, but it's nice getting back into it. Looking at doing some wet plate work next, but I haven't found a cheap source of ether yet. Kyle

8 years, 11 months

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Pair of Twiggys

by jnc＠mercury.lcs.mit.edu

> From: geneb > I'm going to assume you're being sarcastic. :) With a steam-shovel... :-) >> that whole display/windows/menu/mouse thing he copied from Xerox > Fixed that for ya. :) Well, technically, as you probably know, the mouse came from Engelbart (well, his group; I'm not sure who the individual was); and the display, I'm honestly not sure of. I know the Knight TV system at the AI Lab was a very early bit-mapped display, but I don't know where the idea first appeared. (There were of course influential earlier display systems, such as the one on SAGE, althoug those were of course all stroke-based systems, given the limited memory of the period.) Windows and menus are AFAIK from PARC, but maybe there are antecedents I don't know of. > Bah, he was an ego-driven trinket salesman. His trinkets quit being any > good after the IIgs. :) Now I'm not sure how serious _you_ are being! :-) As to the first, there is some truth to it, but like many (all) humans, he was complex... Hard to say what else he would have done, could he have gone on; perhaps not so much (he was getting up there, and people do slow down), but I suspect his early death was a serious loss (in terms of further advances). Noel

8 years, 11 months

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Pair of Twiggys

by jnc＠mercury.lcs.mit.edu

> From: geneb > I'm going to assume you're being sarcastic. :) With a steam-shovel... :-) >> that whole display/windows/menu/mouse thing he copied from Xerox > Fixed that for ya. :) Well, technically, as you probably know, the mouse came from Engelbart (well, his group; I'm not sure who the individual was); and the display, I'm honestly not sure of. I know the Knight TV system at the AI Lab was a very early bit-mapped display, but I don't know where the idea first appeared. (There were of course influential earlier display systems, such as the one on SAGE, althoug those were of course all stroke-based systems, given the limited memory of the period.) Windows and menus are AFAIK from PARC, but maybe there are antecedents I don't know of. > Bah, he was an ego-driven trinket salesman. His trinkets quit being any > good after the IIgs. :) Now I'm not sure how serious _you_ are being! :-) As to the first, there is some truth to it, but like many (all) humans, he was complex... Noel

8 years, 11 months

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Looking to re-home some NeXT hardware

by COURYHOUSE＠aol.com

Hi CHris - We wanted one cleaner! for the exterior view. also 2 are good. one can be showed set up and another one for people to peek inside. OK did that with pair of Altairs which due to conditions worked out well had pristine looking Altair with replaced power supply and mother board ... blah right? but left closed for exterior view in display looks great. had 2ed one nasty out side and front pane front... not so nice l but inside it has the correct orig. wimpy power supply and the little linked together mother board segments with 100 jumper wires holding each together... this MADE A GREAT INTERIOR display. Ed# _www.smecc.org_ (http://www.smecc.org) In a message dated 3/14/2017 12:08:45 P.M. US Mountain Standard Time, cmhanson at eschatologist.net writes: On Mar 12, 2017, at 7:26 PM, Ed via cctalk <cctalk at classiccmp.org> wrote: > > OK anyone else have a cube out there that is cosmetically decent? does > not need to be internally complete? > > Ours is a bit of a beater for the display What?s wrong with yours that you can?t clean it up for a non-operational display? -- Chirs

8 years, 11 months

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Looking to re-home some NeXT hardware

by COURYHOUSE＠aol.com

OK anyone else have a cube out there that is cosmetically decent? does not need to be internally complete? Ours is a bit of a beater for the display thanks Ed Sharpe archivist for smecc In a message dated 3/12/2017 7:18:42 P.M. US Mountain Standard Time, santo.nucifora at gmail.com writes: On Sun, Mar 12, 2017 at 10:13 PM, <COURYHOUSE at aol.com> wrote: ok can you spare the cube? Ed# _www.smecc.org_ (http://www.smecc.org/) No. As I noted, I haven't even booted it up yet to try it. I will be keeping that, one of the mono NeXTstations (the one for parts ) and passing on a NeXTstation to a fellow collector. I appreciate the interest but it hasn't even warmed up yet from the cold :) Santo

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