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

by mattislind＠gmail.com

I have what I believe is an unused RA60 head #4. At least the surface looks very clean. Someone has written "RA60 04" on the side of the box. On the top there is handwritten 70-18661-04. https://i.imgur.com/RNK0FOTl.jpg I could use a RL02 or RL01 head as a trade if someone is interested. /Mattis

7 years, 6 months

2
1
0 0

Cleaning out again

by jnc＠mercury.lcs.mit.edu

> From: Mark Tapley > I'm interested in one of the DECServers but Bill says it's big > enough to be in the "pick up only" pile. ... drop it at a Pak/n/Ship or > equivalent to get it headed my way. PakMail will go pick stuff up. If several people get together, they could make only one trip to Bill's, which might reduce the cost. Noel

7 years, 6 months

1
0
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Cleaning out again

by bill.gunshannon＠hotmail.com

Anybody interested in a pair of Tseng Labs ULTRARAM boards? I assume they were expansions for the Tseng Labs Video Cards but, if nothing else, they are loading with 4164's. bill

7 years, 6 months

3
4
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Heathkit H9 schematics wanted

by harten＠injectstar.de

Hi to all! I'm looking for a good scan of the Heathkit H9 schematics. A set of photos, if the document is to large for scanning, would also work for me. Regards Rolf

7 years, 6 months

1
0
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IBM 3270 MCA card available

by mattislind＠gmail.com

I have some kind of IBM 3270 MCA board available for the cost of shipping >from Sweden. IBM P/N 26F0191. Have no way of testing it, but it was pulled >from an otherwise working machine. https://i.imgur.com/jBBDrcnl.jpg /Mattis

7 years, 6 months

2
1
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Rayethon Computer AN/FYK9 CMI Store 33

by justin.keogh＠v6y.net

Anyone know more about this? So far I have only found references to Rayethon Computers in old trade mags. http://v6y.net/IMG_20180912_170812.jpg The rack is as stout as it gets. BTW if anyone wants a nice RXO2 (auction ending in 6 hours), bidding starts at $1: https://www.ebay.com/itm/202440567768 Cheers! -Justin

7 years, 6 months

10
16
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SPACEWAR! Switch Boxes for a PDP-12

by anders＠abc80.net

> Date: Mon, 24 Sep 2018 12:26:57 -0600 > From: Eric Smith <spacewar at gmail.com> > To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> > Subject: Re: SPACEWAR! Switch Boxes for a PDP-12 > Message-ID: > <CAFrGgTS=XdctKw6G_FjddnLc6H=gpgf5JizV9zRXY4C0qhoYyg at mail.gmail.com> > Content-Type: text/plain; charset="UTF-8" > > On Mon, Sep 24, 2018 at 11:23 AM, Robert Feldman via cctalk < > cctalk at classiccmp.org> wrote: > >> >that is what the PDP-1 at CHM has been using for over 10 years >> >> https://na.suzohapp.com/products/pushbuttons/58-9166-L > > > Ken Sumrall built the Spacewar control boxes used at the museum, with some > suggestions from me. We originally intended these to be temporary, and to > build nicer control boxes later. Since they were intended to be used by > restoration team members, and possibly museum guests, we wanted them to be > reliable rather than authentic, and specifically did NOT want these > temporary boxes to themselves become historical artifacts. We chose > inexpensive but robust arcade pushbuttons. They can take a beating, and in > the event that the microswitch does break or wear out, it can easily be > replaced, though the complete button assembly with microswitch is not > expensive. The boxes are particle board. We used DE-9 connectors. On the > PDP-1, hyperspace is invoked by the CW and CCW rotate controls being > activated simultaneously, so the hyperspace button is wired via series > diodes to both rotate buttons. > > After we built them, Steve Russell pointed out to us that although these > boxes don't look like at all like the originals, they actually are > authentic, in the sense that like the originals, these boxes were quickly > knocked together rather than carefully planned, and are functional rather > than pretty. > > We positioned the individual buttons based on the layout used on one of > the > Atari coinop games, "Space Duel" IIRC, on the because Atari had done a > good > job of laying them out to be easy to use. > > I'm not trying to discourage anyone from trying to make replicas of the > original Spacewar control boxes, but aside from some grainy photos and a > brief description, not much detail about them is actually known. > > We do not know what controls were used when PDP-1 Spacewar was > demonstrated > at the Computer Museum in Boston. We don't think they had the original > control boxes. Possibly they might have just used the PDP-1 console > switches, which is quite inconvenient and increases wear on those > switches. When we restored the PDP-1, we discovered that some of the > console switches were flaky, and upon inspection, that they appeared to > have been replaced multiple times, with suboptimal craftsmanship. > I like the ideas with the diodes for hyperspace, I'll steal that right away!

7 years, 6 months

1
0
0 0

Rayethon Computer AN/FYK9 CMI Store 33

by gerardcjat＠free.fr

@ Chuck, I know you know about the FST1 computer ( 24 bit ). Do you know that there is ( now ?? ) a bit of documentation about it on Bytesavers ?? in .... PDF/Fairchild/Sentry ....

7 years, 6 months

2
1
0 0

Fall cleaning - 9-track drives available

by bobalan＠sbcglobal.net

I have four 9-track tape drives, and a dirty DEC rack, that I need to get rid of. Two of the drives are HP 7970B's. One has the door unattached. Then there's a Kennedy 9100 800/1600 bpi drive. Very heavy.? As found, none tested by me. Just don't have time to play with them. Last is a CDC drive complete with an AST clone PC with an Overland Data controller and software. This was running a few years ago but has not been used since. Has Media Master format conversion software also. There's also a smallish DEC rack. Could use the top painted but otherwise not too bad. Includes four sets of rack slides. All are located in Santa Cruz, CA and need to be gone soon, I need the room in my hangar. Come get them! Photos here: http://dvq.com/fall_cleaning/ -- Vintage computers and electronics www.dvq.com www.tekmuseum.com www.decmuseum.org

7 years, 6 months

5
10
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SPACEWAR! Switch Boxes for a PDP-12 (Bob Rosenbloom)

by michael.99.thompson＠gmail.com

> > From: Bob Rosenbloom <bobalan at sbcglobal.net> > Subject: Re: SPACEWAR! Switch Boxes for a PDP-12 > > How about these? They look close, but are still a bit expensive. > > > https://www.ebay.com/itm/VINTAGE-SWITCHCRAFT-60312DL-MOMENTARY-SWITCH/25358… > > Bob > I bought 5x of them. They are the locking style that we don't want, but I think that we can bend the angled part to make them momentary. Thanks for the help! -- Michael Thompson

7 years, 6 months

1
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SPACEWAR! Switch Boxes for a PDP-12

by r_a_feldman＠hotmail.com

>Message: 13 >Date: Sun, 23 Sep 2018 10:53:20 -0700 >From: Al Kossow <aek at bitsavers.org> > >On 9/23/18 7:46 AM, Michael Thompson via cctech wrote: >> Before we cave >> in and buy some modern C&K toggle switches > >ugh > >use black arcade pushbuttons > >that is what the PDP-1 at CHM has been using for over 10 years https://na.suzohapp.com/products/pushbuttons/58-9166-L Bob [http://na.suzohapp.com/images/50/58-9166-L.png]<https://na.suzohapp.com/products/pushbuttons/58-9166-L> Black Pushbutton w/ .187 Horizontal Microswitch - 58-9166-L<https://na.suzohapp.com/products/pushbuttons/58-9166-L> Black Pushbutton w/ .187 Horizontal Microswitch na.suzohapp.com

7 years, 6 months

2
1
0 0

DEC backplanes on eBay

by jnc＠mercury.lcs.mit.edu

Anyone recognize these: https://www.ebay.com/itm/183446161463 They've got a fair amount of wire-wrap, so I'd think 70's-80's. Noel

7 years, 6 months

2
1
0 0

Floating point math in FORTRAN IV on PDP-8

by kylevowen＠gmail.com

At VCF MW this past weekend, I was playing around with an FPP8/A stuffed into a PDP-8/M with a fan removed. This hex-wide two-board set will happily work in a quad-wide backplane, as it needs no signals that an 8/A would otherwise provide. I wanted to benchmark the FPP8/A with the software emulation that FORTRAN IV supposedly does. Mind you, I also don't have an EAE in mine, so software emulation for integer multiplication/division would also be used. I tried running a simple program to print some natural logs and square roots, which ran quite well with the FPP8/A in place. Without the FPP8/A...all of the results were wrong. Significantly. Negative numbers in many cases. No clear pattern as to what it's doing. Would anyone be able to try my program on some other real hardware (or another emulator) to verify? With and without EAE would also be desirable. I'm not sure how to disable the EAE in SIMH, else I'd try that too. Here's what SIMH looks like with my program: PDP-8 simulator V4.0-0 Current git commit id: d35b8725 sim> at rk0 disk2.fortran.rk05 sim> b rk .TYPE FLOAT.FT DO 50 I=1,100 F = FLOAT(I) G = SQRT(F) H = ALOG(F) WRITE(4,100) F,G,H 50 CONTINUE 100 FORMAT(' ',F12.6,F12.6,F12.6) END .R F4 *FLOAT/G$ 1.000002 1.000002 0.000000 2.000002 1.414215 0.693147 3.000002 1.732053 1.098614 4.000002 2.000002 1.386296 5.000002 2.236070 1.609439 [snip] 98.000001 9.899495 4.584968 99.000000 9.949874 4.595121 100.000023 10.000008 4.605171 . Much appreciated, Kyle

7 years, 6 months

5
8
0 0

DEC H744 +5 supply

by jnc＠mercury.lcs.mit.edu

> From: Brent Hilpert > Your conceptualisation around the role of electrons is perhaps a > little off. Well, I'm not taking into effect things like the velocity of electrons passing around the circuit (more current, with the same number of electrons, effectively), etc, but I value the 'electron-based-view' since it led me to understand the issue of EI conversion (something I don't recall having seen called out explicitly - e.g. it's not in that DEC tech manual). (Speaking of reducing the number of electrons: I recall a physicist - don't recall who - who jokingly suggested the reason they are all identical is that there is only _one_ - it travel forward in time an an electron, goes back as a positron; rinse, repeat! :-) > You don't need 'more' electrons to generate a higher current, you just > need to 'expend them' more quickly, using words like 'more' and > 'expend' loosely Right, particularly since what's really happening (e.g. during the L discharge phase) is that electrons are being 'borrowed' from the shells in the atoms of the conductor, run around the circuit, and then returning from whence they came. > Capacitors very much play a role in supplying current to the load. > Both the L & C play a role as energy reservoirs. Right, but the C doesn't play a _direct_ role in the EI conversion, the way the L does? (Or maybe it does - the voltage across the C could I guess play a role in mobilizing electrons in the circuit?) >>> The transformer is nonetheless much smaller than it would be in a >>> straight linear regulator design because the secondary current it has >>> to supply is several factors lower than for a comparable linear reg. >> That's because of the higher efficiency of this circuit .. ? > primarily it's because it's still a higher voltage by several multiples > ... and thus the current that the transformer secondary has to deal > with is the same factor lower .. meaning less copper for the secondary > and less iron for the core. Ah. Interesting tradeoff! So it seems like they probably picked the intermediate voltage to be as high as they could (to reduce the transformer cost), modulo the cost/availablility of transistors for the switching... > I haven't seen/read this TofOp. Here: http://www.bitsavers.org/pdf/dec/pdp11/1140/1140_SystemManual.pdf if you're (still) interested; the H744 starts on pg 6-10 (pg 112 of the PDF). Noel

7 years, 6 months

1
0
0 0

Floating point math in FORTRAN IV on PDP-8

by engwalljonathanthereal＠gmail.com

Maybe you don't want to fix your program. On September 19, 2018, at 5:46 PM, Michael Zahorik via cctalk <cctalk at classiccmp.org> wrote: Kyle, I have not run my machine since March. Summer is car season. But I thought that maybe I could run this little program quickly. My PDP8E started up, loaded the RIM and SERIAL DISK then OS/8 ran. Everything looked good, BUT...... something is wrong with my FORTRAN 4. Programs seem to compile, but I can't even run a simple test program that prints out whatever I enter from the TTY. Something has gone south. Anyway, I'm not familiar with the command FLOAT(). Do I have to have floating point hardware to use this? Well.... either there is something wrong with my machine or more likely with my FORTRAN software or even more likely operator error (me). So many times after a long summer I have to re learn most of what I learned last winter. Kinda of like when I was in school after summer vacation. ?Mike Zahorik (414) 254-6768 From: Kyle Owen via cctalk <cctalk at classiccmp.org> To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org> Sent: Wednesday, September 19, 2018 5:43 PM Subject: Floating point math in FORTRAN IV on PDP-8 At VCF MW this past weekend, I was playing around with an FPP8/A stuffed into a PDP-8/M with a fan removed. This hex-wide two-board set will happily work in a quad-wide backplane, as it needs no signals that an 8/A would otherwise provide. I wanted to benchmark the FPP8/A with the software emulation that FORTRAN IV supposedly does. Mind you, I also don't have an EAE in mine, so software emulation for integer multiplication/division would also be used. I tried running a simple program to print some natural logs and square roots, which ran quite well with the FPP8/A in place. Without the FPP8/A...all of the results were wrong. Significantly. Negative numbers in many cases. No clear pattern as to what it's doing. Would anyone be able to try my program on some other real hardware (or another emulator) to verify? With and without EAE would also be desirable. I'm not sure how to disable the EAE in SIMH, else I'd try that too. Here's what SIMH looks like with my program: PDP-8 simulator V4.0-0 Current? ? ? ? git commit id: d35b8725 sim> at rk0 disk2.fortran.rk05 sim> b rk .TYPE FLOAT.FT ? ? ? DO 50 I=1,100 ? ? ? F = FLOAT(I) ? ? ? G = SQRT(F) ? ? ? H = ALOG(F) ? ? ? WRITE(4,100) F,G,H 50? ? CONTINUE 100? FORMAT(' ',F12.6,F12.6,F12.6) ? ? ? END .R F4 *FLOAT/G$ ? ? 1.000002? ? 1.000002? ? 0.000000 ? ? 2.000002? ? 1.414215? ? 0.693147 ? ? 3.000002? ? 1.732053? ? 1.098614 ? ? 4.000002? ? 2.000002? ? 1.386296 ? ? 5.000002? ? 2.236070? ? 1.609439 [snip] ? 98.000001? ? 9.899495? ? 4.584968 ? 99.000000? ? 9.949874? ? 4.595121 ? 100.000023? 10.000008? ? 4.605171 . Much appreciated, Kyle

7 years, 6 months

1
0
0 0

DEC H744 +5 supply

by jnc＠mercury.lcs.mit.edu

> From: Brent Hilpert > In typical "down-converters" there are additional current paths in the > supply, paralleling the input path, that can provide the 'additional' > electron flow rate. ... the whole rationale of a switching supply is to > use time (varying switching periods) and temporary energy storage to > change that EI relationship from input to output without energy loss. So, two more questions (if you have the time): I can see that there's a nice synergy between the switching concept and the buck converter (since the switch does exactly what the buck converter needs, in terms of turning the input current off and on), _but_ - are there switching supplies that operate the way I described (up-convert the frequency, then use a transformer to get directly to more or less the right voltage)? I.e. without needing to use a buck converter to do the conversion from low current at higher voltage to higher current at lower voltage? (Although I guess the coil for the buck might be cheaper than the transformer - even though the use of a high frequency would reduce the size of the latter - making the buck approach superior.) To put it another way, there's no _necessary_ connection between the switching concept, and the buck converter is there? Does that mean it is in theory possible to stick a buck converter on the output of a linear supply to do the V1I1-> V2I2 conversion? (Although I know it's probably a stupid design, because you'd still need some sort of switcher for the buck converter, so the linear supply would be basically pointless.) > If the heatsinks seem huge compared to modern day supplies, that's more > likely the result of technology improvements - faster devices, and > moving from bipolar switching transistors to mosfets. Bipolar > transistors have a near-fixed voltage drop which can't be reduced Right, I knew bipolars had the fixed drop, but I hadn't made the connection to that being the cause of the large amount of heat needing to be dumped. Useful enlightenment! > If you supply a link & location to a schematic I'll take a look Here: http://ana-3.lcs.mit.edu/~jnc/tech/pdp11/jpg/H744.tif http://ana-3.lcs.mit.edu/~jnc/tech/pdp11/jpg/H744.jpg Thanks to everyone for taking the time and energy to reply! Noel

7 years, 6 months

3
3
0 0

looking for out-of-print computer book

by billr＠giantstepsmts.com

Hi folks, I am trying to find an out-of-print tech book for a research project I'm doing. The book is called Porting Macintosh Applications to Windows 95 and NT by Greg Stone, dated December 1996, ISBN 0471118516, published by Wiley. It's listed on Amazon but not available; I've searched on <http://usedbooksearch.net/> usedbooksearch.net and even WorldCat, with no luck. Wondering if anyone has any ideas how I could find a copy? Figure someone on this list could point me in the right direction. Would love any help. Thanks, * Bill. Bill Rosenblatt GiantSteps Media Technology Strategies 157 Columbus Ave., Suite 409 New York, NY 10023 (212) 956-1045 Skype: billrosenblatt Twitter: @copyrightandtec Blog: https://copyrightandtechnology.com/ LinkedIn: https://www.linkedin.com/in/billrosenblatt/ Forbes: https://www.forbes.com/sites/billrosenblatt/

7 years, 6 months

7
6
0 0

SPACEWAR! Switch Boxes for a PDP-12

by michael.99.thompson＠gmail.com

Visitors to the RICM like to play SPACEWAR! in the PDP-12. Unfortunately using the console switches is uncomfortable, not intuitive, and is tough on the switches. We would like to recreate the switch boxes used on the PDP-1 to make playing a better experience. We modified the source <http://www.ricomputermuseum.org/Home/equipment/dec-pdp-12/dec-pdp-12-source…> >from D.E. WREGE <http://www.pdp8.net/pdp8cgi/os8_html/SPCWR3.PA?act=file;fn=images/jby/jbyos…> to use the LINC SXL instruction to read the PDP-12 GPIO signals, and prototyped two switch boxes using recycled toggle switches. This works great, so now we need to make better switch boxes. This CHM article shows what we want to recreate. <http://www.computerhistory.org/pdp-1/a87ddd9510aeebf6485c47a35f8a26aa/> This article shows a sketch of the switch boxes. <http://thedoteaters.com/?attachment_id=6416> A generous donor made these boxes for us. <https://scontent.fbos1-1.fna.fbcdn.net/v/t1.0-9/37971884_2342940525721951_2…> The lever switches are turning our to be difficult to find at a reasonable price. We found some NOS SwitchCraft lever switches that looked like the sketch and the PDP-1 pictures and were a reasonable price, but our order was rejected because they only had one in stock. eBay has Mossman and SwitchCraft, but they are either very expensive (more than $50 each), or they only have one available. The switches that we are looking for need to be SPDT, three-position, non-locking, center off. (If the switches have more than one pole we can remove the extra poles to keep the operational force low.) Before we cave in and buy some modern C&K toggle switches, does anyone have a source for Mossman or SwitchCraft switches at a reasonable price? -- Michael Thompson

7 years, 6 months

5
5
0 0

DEC H744 +5 supply

by jnc＠mercury.lcs.mit.edu

> From: Brent Hilpert > With the given 20-30VAC input (do I have that right?) Yup. > A glance at the schematic ... you might think it's just a linear > regulator And the writeup in the maint manual gives that impression too, which didn't help! (Hence my assumtion that it was acting in the way a plain linear regulator might, in terms energy efficiency.) > Diode D5 provides the current path for L1 to supply energy to the load > when the source is switched off. Right. What is the role of the pair of big caps, C8/C9. Is that just to filter ripple, or do they play a role in the provision of current when the supply is switched off (by Q2)? (My guess would be only the former, since unlike the energy stored in L1, which can be used provide electrons when Q2 is off, capacitors only store electrons, so they can't play much of a role in the conversion of V1I1 to V2I2, which requires 'creation' of more electrons when I2>I1. Oh, reading the maint manual, when Q2 is on, they store some of the current coming through L1. So I guess they have a peripheral role in the overall operation.) > The subtle thing about designs like this is where does the switching > oscillation come from?, as there is no obvious oscillator present. The maint manual does cover that. It more or less says that as the output voltage rises through 5.05V, the voltage regulator turns off Q2, and as it falls through 4.95, it turns it back on. (Presumably when the whole works is first turned on, the output voltage is less than 4.95V, so Q2 stays on until it gets to the turn-off voltage.) Q7 is part of the over-current sensing, it says. > the switching is taking place after the transformer rather than > straight off the mains, this allows the switcher design to be simpler > and get away with using much lower voltage semiconductors. Ah, I was wondering about why they did it that way. > The transformer is nonetheless much smaller than it would be in a > straight linear regulator design because the secondary current it has > to supply is several factors lower than for a comparable linear reg. That's because of the higher efficiency of this circuit, as opposed to a straight linear regulator, which would need more mains power in to produce an equivalent power out? > Q5 is functioning as a common-base stage in the driver chain ... > It is not part of the +15V supply to the 723, that is provided by > R2, zener D2, C2. I was confused by the maint manual, which says "D2 is used with Q5 and R2 to provide +15V to E1". > There are a thousand configurations for power supplies possible > depending on what needs to be accomplished ... It's useful to keep in > mind that regulation and EI conversion are different objectives but > they can be achieved either separately or in concert. Got it. > bipolars have a fixed MINIMUM drop, which can be used in a switching > supply to as much advantage as possible with bipolars, but have a > varying drop in a linear regulator Right. OK, I think I've got a decent grip on all this now - although I still wouldn't want to try and _repair_ one... :-) Noel

7 years, 6 months

2
1
0 0

SPACEWAR! Switch Boxes for a PDP-12

by anders＠abc80.net

> Date: Sun, 23 Sep 2018 10:46:48 -0400 > From: Michael Thompson <michael.99.thompson at gmail.com> > To: cctech <cctech at classiccmp.org> > Subject: SPACEWAR! Switch Boxes for a PDP-12 > Message-ID: > <CAH1BU=_4OVdEjGgMMcbyLZS9-aDCXp0sZxh1SiEJrtsuWu96Pw at mail.gmail.com> > Content-Type: text/plain; charset="UTF-8" > > Visitors to the RICM like to play SPACEWAR! in the PDP-12. Unfortunately > using the console switches is uncomfortable, not intuitive, and is tough > on > the switches. We would like to recreate the switch boxes used on the PDP-1 > to make playing a better experience. > > We modified the source > <http://www.ricomputermuseum.org/Home/equipment/dec-pdp-12/dec-pdp-12-source…> > from D.E. WREGE > <http://www.pdp8.net/pdp8cgi/os8_html/SPCWR3.PA?act=file;fn=images/jby/jbyos…> > to use the LINC SXL instruction to read the PDP-12 GPIO signals, and > prototyped two switch boxes using recycled toggle switches. This works > great, so now we need to make better switch boxes. > > This CHM article shows what we want to recreate. > <http://www.computerhistory.org/pdp-1/a87ddd9510aeebf6485c47a35f8a26aa/> > This article shows a sketch of the switch boxes. > <http://thedoteaters.com/?attachment_id=6416> > A generous donor made these boxes for us. > <https://scontent.fbos1-1.fna.fbcdn.net/v/t1.0-9/37971884_2342940525721951_2…> > > The lever switches are turning our to be difficult to find at a reasonable > price. We found some NOS SwitchCraft lever switches that looked like the > sketch and the PDP-1 pictures and were a reasonable price, but our order > was rejected because they only had one in stock. eBay has Mossman and > SwitchCraft, but they are either very expensive (more than $50 each), or > they only have one available. > > The switches that we are looking for need to be SPDT, three-position, > non-locking, center off. (If the switches have more than one pole we can > remove the extra poles to keep the operational force low.) Before we cave > in and buy some modern C&K toggle switches, does anyone have a source for > Mossman or SwitchCraft switches at a reasonable price? > > -- > Michael Thompson Michel, I did just what you did for being able to play Spacewar! on my PDP-8a (I have KK8E with EAE, VC8E and the DK8E real time clock). But since the frontpanel doesn't have proper switches for the switch register I had to build game hand controls. I built them just like those that can be spotted in the video from CHM: https://www.youtube.com/watch?v=1EWQYAfuMYw but smaller. I just used ordinary arcade style buttons and connected them to the digital inputs on the DKC8A board and modified the source code for that. Those hand controls have two switches for rotate left/right, one for fire and one for acceleration. The last one is for hyper speed but that is triggered by pressing left/right switches at the same time. I intended to fix this so it should be triggered by the last button but never came to it. Unfortunately I haven't written on my page https://www.pdp-9.net/pdp-8a on this yet... /Anders

7 years, 6 months

1
0
0 0

HP CPU32 Emulation Adapter

by jzatar2＠illinois.edu

Hello everyone, This is a longshot, but I was wondering if anybody has or knows someone who might have a very specific HP part. It's the HP E3417A, a PQFP132 PGA interposer for some HP emulation/debug preprocessor stuff for CPU32 (among other 132 pin QFP). Basically I came into an HP logic analyzer with a full preprocessor setup for 160 pin QFP CPU32 procs. 16700A with emulator option, E2480A preprocessor for CPU32, and a 160 pin QFP elastomeric socket with the flex cable. But, I've got one of these: https://hackaday.io/project/6150-beckman-du600-reverse-engineering That board has a 132 pin QFP, but with the right adapter, it should be supported by the hardware I've got here. Thanks, Joe Zatarski

7 years, 6 months

2
4
0 0

Looking for a TURBOchannel Extender Cable

by robert.jarratt＠ntlworld.com

I have finally fixed the PSU of my TURBOchannel Extender (https://robs-old-computers.com/2018/09/23/h7826-power-supply-repaired/). Which means that now I would like to connect it to my DECstation 5000/240. I need the relevant extender cable, which I believe to be a BC12N or a 17-03335-01. I asked on this list about a year ago if anyone has such a cable and thought I would try asking again. I have found a 100-pin SCSI cable that mechanically fits, but I don't know if that has the correct pin assignments. I am aware of a site in the UK which lists this cable (http://refurb.icc4it.co.uk/parts/legacy/dec/17-03335-01) but it looks like one of those sites that speculatively lists things without necessarily stocking them, and it is likely to charge business prices anyway. So, two questions: 1. Could the 100-pin SCSI cable do the job? 2. Anyone have a genuine cable going spare (ideally in the UK). Regards Rob

7 years, 6 months

1
0
0 0

Manual for Documation TM200 punched card reader

by guykd＠optusnet.com.au

Hi Mike, At 10:18 PM 22/09/2018 -0400, you wrote: > From outward appearences, it looks to be the same as the Wang 2244A, and >the Wang Model 2200 Systems Mainteance Manual confirms that it is a TM200: > >http://www.wang2200.org/docs/system/2200_SystemsMaintenanceManual(redone).0… What an excellent list this is. Who else would have spotted that? > A reference manual and data sheet are available on the Wang 2200 site: > >http://www.wang2200.org/docs/peripheral/2234A_2244A_CardReaderRefManual.700… >https://www.wang2200.org/docs/datasheet/2244A_CardReader_DataSheet.700-3524… Lots of interesting information on card coding and usage, thanks. Heh. Every single time I hear the name Wang, I'm reminded of the legendary time Wang showed up at an Australian computer trade show, with their staff all wearing badges that said "WANG CARES" You have to say it with an Aussie accent and know the local idiom to understand why it's side-splittingly funny. > > No schematics, though. There's the rub. Fingers crossed Al Kossow can find that original copy. Regards, Guy

7 years, 6 months

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Advice requested on proper disposal of Seagate ST3000DM001 disk drives

by jnc＠mercury.lcs.mit.edu

> From: Alexandre Souza > What about a nuclear bomb? OK, if we're going to start being _really_ silly..... drop them into a singularity! :-) The best part is that you'll get to watch them being ripped apart and destroyed by tidal forces _forever_ (since time dilation means that as they go over the event horizon, their local time seems to stop compared to ours). Noel

7 years, 6 months

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VCFMW

by jwest＠classiccmp.org

Once again. Silent700 put together an incredible show for the Midwest computer festival in Elk Grove. Every room that was rented was almost overflowing most of the show, so I suspect attendance was great. I heard a lot of good feedback on the speakers and presentations, and I also noticed that the auction pile was bigger than each previous year. I'm not sure which exhibit was my favorite, could be Pat's AVLVAX or Mikes HP3000 - but I also seem to have spent more time than usual at all the C64, A2+, and TRS80 machines. Maybe I'll take a detour to the 8-bitters in my collection for the near term, we'll see! In addition to the show, there were multiple parties and some late nights spent hanging out with the folks I mostly get to see once a year so friendships were renewed and such! Midwest is definitely a really fun show, I strongly encourage anyone who hasn't been to come out next year. Silent700 and helpers (mike et. Al.). thank you so much for your untiring devotion to making Midwest such a great show. J

7 years, 6 months

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ISO Moto Exorciser and EXORterm docs

by aek＠bitsavers.org

I spent some time this weekend documenting the hardware of these and dumping some more MDOS floppies. We had one copy of the MDOS manual which replaced the poor copy I had in bitsavers.org/components/motorola/6800/exorciser. It would be nice to find more/better docs, esp docs on the EXORterm 150 or 155. The terminal has a keytronics kb .ca 1978, of course all the foam was crumbled.

7 years, 6 months

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Barnett Instruments AN/URM-105C Multimeter

by charles.unix.pro＠gmail.com

I spotted a vintage multimeter in an antique shop in Startup WA for $24. Didn't have a chance to test it, but it looks in good condition under the cover. https://photos.app.goo.gl/sTQF8g7jXx2TMKqCA If someone wants it, I would be happy to acquire and ship it at cost. -- Charles

7 years, 6 months

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Manual for Documation TM200 punched card reader

by guykd＠optusnet.com.au

Thanks for the link. So far I'd only tried google, assuming anything relevant on bitsavers would show up. It didn't, which is interesting. My search was only very brief though. I'd been doing an initial eval on the reader in the evening, then read the post about Mr Hollerith's house. So hadn't yet done any serious searching. The unit was made in April 1977. Someone else mentions the TM200 is not the same as the M200, so I have some reading to do. Regards, Guy At 09:52 AM 22/09/2018 -0500, you wrote: >On Sat, Sep 22, 2018 at 9:39 AM Guy Dunphy via cctalk <cctalk at classiccmp.org> >wrote: > >> By coincidence, today I started evaluation of a punched/optical card >> reader. >> Model TM200, made by Documation Inc. >> >> Naturally I have zero information on it so far. >> Does anyone know where I'd find a service manual or schematics? >> > >Did you check Bitsavers already? > >http://bitsavers.org/pdf/documation/ > >Thanks, > >Kyle >

7 years, 6 months

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SMD disk needed

by dseagrav＠lunar-tokyo.net

Does anyone within driving distance of central Illinois have a SMD drive I can borrow for awhile until I can get some kind of SMD emulator working? Anything 450 MB or bigger will do. I need one for the Lambda.

7 years, 6 months

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solaris toolchains

by aek＠bitsavers.org

this info isn't jumping out at me what was the last bootstrapped toolchain (gcc et al) that works on Solaris 2.6? http://jupiterrise.com/tgcware/sunos5.6_sparc/stable/ ??

7 years, 6 months

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Fall cleaning - 9-track drives available

by guykd＠optusnet.com.au

Too far? Road trip? I'm crying here (Sydney Australia.) I have a couple of HP 7970B's (and the sevice manual) though not yet running. But I have no 1600 bpi drives. Oh well... Guy At 01:43 PM 22/09/2018 +0000, you wrote: >I could use a small rack but I think Santa Cruz, CA is a bit too far for >a road trip from NEPA.?? :-)???? (I really regret giving all my racks but one away!!) > > >bill > > >On 09/21/2018 10:44 PM, Bob Rosenbloom via cctalk wrote: >> I have four 9-track tape drives, and a dirty DEC rack, that I need to >> get rid of. >> >> Two of the drives are HP 7970B's. One has the door unattached. Then >> there's a Kennedy 9100 800/1600 bpi drive. >> Very heavy.?? As found, none tested by me. Just don't have time to play >> with them. >> >> Last is a CDC drive complete with an AST clone PC with an Overland >> Data controller and software. This >> was running a few years ago but has not been used since. Has Media >> Master format conversion software also. >> >> There's also a smallish DEC rack. Could use the top painted but >> otherwise not too bad. Includes four sets of rack >> slides. >> >> All are located in Santa Cruz, CA and need to be gone soon, I need the >> room in my hangar. Come get them! >> >> Photos here: http://dvq.com/fall_cleaning/ >> > >

7 years, 6 months

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DEC H744 +5 supply

by jnc＠mercury.lcs.mit.edu

> From: Mattis Lind > The H744 is a buck converter. You can read about buck converters here: > https://en.wikipedia.org/wiki/Buck_converter Wow, that was incredibly hard to read; no clear and simple explanation of the basic concept of how it works, before getting into the details! If I understand it correctly, it stores part of the incoming energy of a block of current in the field around the inductor; later, switches change state to create a loop that includes the inductor, and it uses the stored energy to cause electrons to flow around the new (temporary, because of the switch) circuit. Is that about right? The H744 manual doesn't really talk much about that aspect of the circuit's operation (at least in terms of 'we use this trick to get all the energy out of the incoming current flow'); it just describes the stuff around the coil as "an LC filter". It says "This type circuit is basically only an averaging device", which I wouldn't say is really on point - that would describe my (incorrect) prior description as well as the correct one. And just to make it even more confusing, it says "most of the input voltage is absorbed across the emitter-collector of Q5", but I looked, and Q5 is tiny, and I eventually figured out that that only applies to the +15V needed to run the voltage regulator. Noel

7 years, 6 months

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Advice requested on proper disposal of Seagate ST3000DM001 disk drives

by spacewar＠gmail.com

Anyone have advice on making thermite? Ingredients, sources, proportions? The internet seems to think that just using aluminum powder with ferric oxide is relatively hard to ignite, and that some manganese dioxide would help with that. Without spending too much time shopping, it looks like I can get: * aluminum powder, 5 micron, 2 lb for $34 * ferric oxide, 10 lb for $27 * manganese dioxide, 1 lb for $39

7 years, 6 months

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DEC H744 +5 supply

by jnc＠mercury.lcs.mit.edu

Oh, one thing I forgot to include: > a lot of the incoming power in that 30V AC has to be thrown away, in > producing +5V. So, if my understanding is correct, the 'switching' H744 really isn't much better than a classic linear supply. It still wastes a very large amount of the input power, and it still has a massively heavy transformer in it. Yes? So I wonder what exactly the advantage was in going to the switching approach? Yes, it keeps the output voltage steadier then a pure linear supply could - but I'll bet there are analog approaches that can do the same. (They'd need something that can produce a steady reference voltage, but the switching approach needs, and has, the same thing.) Maybe the main output transistors are happier being full-on or full-off, or something like that? Noel

7 years, 6 months

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Advice requested on proper disposal of Seagate ST3000DM001 disk drives

by jnc＠mercury.lcs.mit.edu

> From: Eric Smith > That's way too good for these *&#$ing ST3000DM001 drives, and won't > provide anywhere near enough sense of satisfaction. https://www.youtube.com/watch?v=Gxm_qpKh7Jw 'Nuff said. Noel

7 years, 6 months

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DEC H744 +5 supply

by jnc＠mercury.lcs.mit.edu

So there's something about the H744 I'm not sure I understand; hopefully those with more analog-fu will set me straight if I'm confused. This supply runs off 20-30V AC. It takes the input AC, rectifies it, and runs it through a cap to filter out the ripple. What's next is that it's an early switching supply; i.e. the electronics inside switches that newly-created main DC off and on very quickly to keep the output voltage at around +5V. However... My understanding is that, without using a transformer (which creates an independent circuit loop - more below), there's no way to increase the _amperage_ out of circuit over what's fed into it: since amps are electrons/second, the electrons/second out more or less have to equal electrons/second in, since one can't easily 'create' electrons - at least, in normal electonic gear! (Transformers, by creating a whole new circuit loop, can 'create' more electrons/second in the new loop; since they tie the 'out' of the new circuit back to its 'in', they can recirculate the 'extra' electrons.) And to the extent that the output is at lower voltage, the energy differential has to be dumped; hence the huge heat sinks - a lot of the incoming power in that 30V AC has to be thrown away, in producing +5V. Right? My (possibly confused) understanding is that later switching supplies take the incoming 60Hz wall AC, transform it to a higher frequency, run _that_ through a transformer (which can be a lot smaller, since it's at a higher frequency, and the higher the frequency, the smaller the transformer you can use - hence the use of high frequency AC in airplanes, to allow use of smaller - and thus lighter - transformers). That then turns out a massive amount of amps in the output loop (since with a transformer, energy out is roughly energy in, modulo resistive losses; and with constant power, if V goes down, I goes up). So the losses are a lot lower - N amps at 110V in produce ~20N amps out at +5V. (Well, depending on all the losses, ~20.) And the whole works is a lot lighter, to boot. Did this programmer get all that analog stuff correctly? Thanks! Noel

7 years, 6 months

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GE2149G206 Bit slice CPU??

by holm＠freibergnet.de

Hi all, I've got an VME Bus sized CPU or GPU Board out of ebay a while before, it is equipped with 4 pcs of AM29203 Slices and an AM2910A Sequencer. It sems to be a german Product. The Sticker on one of the DIN 96 Connectors states: GE2149G206 WNr. 10488 Grund- Baugruppe Does anyone know what it is or where is it coming from? Kind Regards, Holm -- Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe, Freiberger Stra?e 42, 09600 Obersch?na, USt-Id: DE253710583 info at tsht.de Fax +49 3731 74200 Tel +49 3731 74222 Mobil: 0172 8790 741

7 years, 6 months

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HP 2000 /2100 emulator ?

by pete＠petelancashire.com

I will soon have a teletype model 35 all cleaned up and running Why like is some suggestions for something I can put in the base and emulate an HP 2000 or even in modern 2100 my goal is nothing serious I'd love to be able to do HP basic and find the version of Star Trek I think that was the name of the game just show I can demonstrate the friends how cool these machines were. If I could have my dream come true the emulator would be on a little SBC running Linux t Or even a simple OS that upon being powered up it would display login or was that log on on the teletype pretty much having the coat hard-coated but still having an area for saving files. Thanks and thanks for all the previous assistance members of this group of this list have given me

7 years, 6 months

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Advice requested on proper disposal of Seagate ST3000DM001 disk drives

by cym224＠gmail.com

On 20 September 2018 at 23:20, Eric Smith via cctalk <cctalk at classiccmp.org> wrote: > Anyone have advice on making thermite? Ingredients, sources, proportions? > NIST SP 800-88 Rev. 1? There is some milspec about sanding the platters that actually specified what grit to use but I do not remember the title. N.

7 years, 6 months

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Floating point math in FORTRAN IV on PDP-8

by engwalljonathanthereal＠gmail.com

My SIMH resists anything but Adventure, I am working through a Fortran IV. I think you break from the loop and confuse the machine using i. That with some error checking: .TYPE FLOAT.FT ????? DO 50 X=1,100 ????? F = FLOAT(X) ????? G = SQRT(F) IF (G) (11,11,90) 11 WRITE(4,75) G 75 FORMAT(H 5,ERROR) 90?? H = ALOG(F) ????? WRITE(4,99) F,G,H 99?? FORMAT(' ',E12.6,E12.6,E12.6) 50??? CONTINUE WRITE(4,100) F,G,H 100?? FORMAT(' ',E12.6,E12.6,E12.6) ????? END My for fortran IV book and I are the same age,LoL Jonathan Engwall engwalljonathanthereal at gmail.com On September 19, 2018, at 11:10 PM, mark--- via cctalk <cctalk at classiccmp.org> wrote: Hi Kyle Just out of interest I ran this on VAX Fortran (Compaq Fortran 77 6.6-201) and I think got the results expected: $ type for004.dat 1.000000 1.000000 0.000000 2.000000 1.414214 0.693147 3.000000 1.732051 1.098612 4.000000 2.000000 1.386294 5.000000 2.236068 1.609438 ... 98.000000 9.899495 4.584968 99.000000 9.949874 4.595120 100.000000 10.000000 4.605170 However, I am no Fortran expert! Regards, Mark. -----Original Message----- From: cctalk <cctalk-bounces at classiccmp.org> On Behalf Of Kyle Owen via cctalk Sent: Wednesday, September 19, 2018 11:44 PM To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org> Subject: Floating point math in FORTRAN IV on PDP-8 At VCF MW this past weekend, I was playing around with an FPP8/A stuffed into a PDP-8/M with a fan removed. This hex-wide two-board set will happily work in a quad-wide backplane, as it needs no signals that an 8/A would otherwise provide. I wanted to benchmark the FPP8/A with the software emulation that FORTRAN IV supposedly does. Mind you, I also don't have an EAE in mine, so software emulation for integer multiplication/division would also be used. I tried running a simple program to print some natural logs and square roots, which ran quite well with the FPP8/A in place. Without the FPP8/A...all of the results were wrong. Significantly. Negative numbers in many cases. No clear pattern as to what it's doing. Would anyone be able to try my program on some other real hardware (or another emulator) to verify? With and without EAE would also be desirable. I'm not sure how to disable the EAE in SIMH, else I'd try that too. Here's what SIMH looks like with my program: PDP-8 simulator V4.0-0 Current git commit id: d35b8725 sim> at rk0 disk2.fortran.rk05 sim> b rk .TYPE FLOAT.FT DO 50 I=1,100 F = FLOAT(I) G = SQRT(F) H = ALOG(F) WRITE(4,100) F,G,H 50 CONTINUE 100 FORMAT(' ',F12.6,F12.6,F12.6) END .R F4 *FLOAT/G$ 1.000002 1.000002 0.000000 2.000002 1.414215 0.693147 3.000002 1.732053 1.098614 4.000002 2.000002 1.386296 5.000002 2.236070 1.609439 [snip] 98.000001 9.899495 4.584968 99.000000 9.949874 4.595121 100.000023 10.000008 4.605171 . Much appreciated, Kyle

7 years, 6 months

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In search of microchannel P390 card...

by ian.finder＠gmail.com

If you have a lead on one, please ping me off-list. I have a very specific project I'm trying to accomplish. thanks

7 years, 6 months

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ISO 70's and 80's coax and twinax terminal docs/brochures

by evanlinwood＠hotmail.com

> I've started to more aggressively archive material on old IBM and compatible coax and twinax I'm not sure if this helps - they seem like they may be in the disposal chain though, might possibly be able to grab manuals if they come up? http://www.a1usedcomputers.com.au/shop/prodList.asp?idCategory=256

7 years, 6 months

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Looking for two DEC H445 power bricks for PDP 11/40 project

by jnc＠mercury.lcs.mit.edu

> From: Pierre Gebhardt > As I don't have core memory modules available, I thought of using MS11 > memory, which, according to my research, seems to be an option for > 11/40 systems. Err, which kind of MS11? There are lots of different ones: http://gunkies.org/wiki/MS11 and they don't all work in every UNIBUS PDP-11! Your options are the -E/-J group, and the -L, but the latter are a bit hard to find, and expensive. (There may be non-DEC equivalents, but I don't know about them.) They all need a MUD backplane such as the DD11-C or DD11-D. (IIRC, the -M has a 'UNIBUS' jumper, but the card uses non-standard voltages on the backplane; 12V instead of 15V, IIRC.) > Does that mean that a single H745 regulator might be sufficient for my > needs? If you're not using a lot of MM11-L, you would definitely only need one H745, no matter what configuration you have. (Note that if you have an old machine/harness, there's a jumper you have to add if you have only a single H745; see the second paragraph on page 6-18 of DEC-11-H40SA-B-D.) Noel

7 years, 6 months

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Apple LaserWriter paper trays

by ball.of.john＠gmail.com

With VCF: PNW six months away I want to try and get something together to make a presence. I am not aware of anyone demonstrating an entire fleet of Apple machines in a configuration as advertised as "The Macintosh Office" at any recent point in history so I thought I should dedicate a table or two to that. A quick inventory tells me I can totally get multiple compact macs, a Macintosh XL, an IBM XT and a netbooting Apple IIe going with a set of common office programs and networked together with a server running Appleshare so that people can play with the software and try a few games over the network. The key component however is I need to get a LaserWriter working and networked as well so people who play with MacPaint for example can print their art out. I have access to four or five printers, of which one will come up reliably and make a presentable attempt of dispensing toner and not leafing roller sludge everywhere however while I can find cassette trays for holding paper I cannot find the two brown paper trays that attached to either side of the printer. I see quite a few on google that are also missing the trays. Would calling them uncommon be correct or might someone have a set they would be willing to part with? -John

7 years, 6 months

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The Ultimate Apollo Guidance Computer Talk

by lproven＠gmail.com

Amazingly detailed 1hr talk about the Apollo Guidance Computer. It's stunning how much they got into mid-1960s technology: 1 MHz hand-made processor, 1 k of RAM, 4 k of ROM, and bank-switching, with a fault-tolerant multitasking OS with an interpreted metalanguage. Absolutely stunning. https://media.ccc.de/v/34c3-9064-the_ultimate_apollo_guidance_computer_talk -- Liam Proven - Profile: https://about.me/liamproven Email: lproven at cix.co.uk - Google Mail/Hangouts/Plus: lproven at gmail.com Twitter/Facebook/Flickr: lproven - Skype/LinkedIn: liamproven UK: +44 7939-087884 - ?R (+ WhatsApp/Telegram/Signal): +420 702 829 053

7 years, 6 months

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ISO 70's and 80's coax and twinax terminal docs/brochures

by aek＠bitsavers.org

I've started to more aggressively archive material on old IBM and compatible coax and twinax terminals and was wondering if anyone has documentation scanned or squirreled away that I don't already have on bitsavers. Most of these have been scrapped by now, and surviving keyboards for them are going for the high hundreds of dollars now, even from companies like Telex or Memorex. I started surveying what we have in the CHM collection and about half of them have no keyboards :-( This is a drag. Terminals from the PC era forward seem to be in a little better state since many appear to have adopted some flavor of 5 pin DIN interface. There are some new pictures of a few Telex coax terminals up now under http://bitsavers.org/pdf/telex/terminal and I started trying to restore a 276-12 with integrated establishment controller that I'm going to have to find a keyboard for. Maybe Cindy knows of someone who has some more old Telex Microswitch keyboards.

7 years, 6 months

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Looking for two DEC H445 power bricks for PDP 11/40 project

by jnc＠mercury.lcs.mit.edu

> From: Henk Gooijen > As far as I know, the 11/40 uses only one H745. Depends on what kind of memory it has. If MF11-L, it has two H745's; if MM11-U, it has an H745 and an H754. (The harness has two different connectors for the 5th 'brick', so it can handle either kind. At least, that's the situation on the later machines [serial numbers above 6000]; early production /40's only support the MF11-L, and you have to use special add-on harnesses to support an MF11-U in them; see DEC-11-H40SA-B-D, Chapter 6 for the details.) Noel

7 years, 6 months

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The Ultimate Apollo Guidance Computer Talk

by jnc＠mercury.lcs.mit.edu

> From: Cory Heisterkamp > I can also highly recommend the book 'Digital Apollo' Yes, it's quite good. Two other good books about the AGC are: Eldon Hall, "Journey to the Moon" which is by a guy who was one of the managers on the project. The book is anything but a 'management history', though (unlike too many 'technical histories', like the Smith/Redmond Whirlwind history, which I was just looking at). The book is a _technical_ history - the engineering is front and center, and management decisions are on the periphery, for background. There's also: Hugh Blair-Smith, "Left Brains for the Right Stuff" which is by someone who was an engineer on the project - he did work on the CPU architecture, and also some software. The book is a mix of personal experiences, and an overall history of the moon race. Noel

7 years, 6 months

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I finally got to see a LMI Lambda in real life...

by dseagrav＠lunar-tokyo.net

Two of them in fact, and a CADR - In my garage, no less! The Lambdas are in bad shape, and the CADR is in very bad shape and missing its console and disk. It?s going to take awhile to get them cleaned up and see how viable they are. On the plus side, I got a some spares and debugging equipment, and I have a working PDP-11 to debug the CADR with if it gets that far, so there?s a good chance I should be able to get at least one working. I?ll post more as things develop.

7 years, 6 months

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SAGE memory plane

by aek＠bitsavers.org

ebay https://www.ebay.com/itm/232927847019 https://secretsofcoldwarradar.omeka.net/exhibits/show/cold-war-radar-techno… can someone identify exactly what this box was called, when it was deployed, and what training manual they are referring to? we have a couple http://www.computerhistory.org/collections/catalog/102633198 and they keep getting mis-identified.

7 years, 7 months

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favor at vcfmw

by aek＠bitsavers.org

If Paul brings some Dilog qbus boards, could someone look for a DQ614 for me? I've been trying to find out if he has one, and haven't been able to do it.

7 years, 7 months

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Looking for two DEC H445 power bricks for PDP 11/40 project

by jnc＠mercury.lcs.mit.edu

> From: Pierre Gebhardt > two H745 bricks (delivering -15V) which are still missing. I'd be very > happy, if anybody could consider parting with one or two. Location is > in Germany. There should be some on eBait; mildly expensive, but if you get them from the US, the shipping is going to be a fair amount anyway... Noel

7 years, 7 months

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VT100 emulation

by seefriek＠gmail.com

From: Al Kossow <aek at bitsavers.org> > > a 7" android tablet based on the wondermedia wm8650 SOC > ... > these things are so old they've disappeared from the market > Well...not 7", but there is this: https://blackberrymobile.com/product/blackberry-key2/ KJ

7 years, 7 months

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Looking for two DEC H445 power bricks for PDP 11/40 project

by p.gebhardt＠ymail.com

Hello list, last year, I was able to obtain a BA11-F chassis for my PDP 11/40 build-up project. The power supply to run a system in basic configuration is complete except for two H745 bricks (delivering -15V) which are still missing. I'd be very happy, if anybody could consider parting with one or two. Location is in Germany. Please contact me off-list. Thanks a lot in advance for anybody of you helping me to work towards a running my first very classic PDP-11! Best regards,Pierre ------------------------------------------------------------------------------- Pierre's collection of classic computers moved to: http://www.digitalheritage.de

7 years, 7 months

3
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cctalk Digest, Vol 48, Issue 17

by technoid6502＠gmail.com

I recall the SAGE was an integrated system of control for Interceptors. It began in the 1950's and became fully operational with the F106 fighter interceptor aircraft. It could control an entire intercept from wheels up to flare on landing. I never thought I'd SEE a chunk of the system. Thanks! I think it stood for Semi-Automatic Ground Environment, or some such. What kind of cores does it use? I once saw a board of Ruby Rod core memory at a junkyard. Very beautiful. Jeff

7 years, 7 months

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Looking for two DEC H445 power bricks for PDP 11/40 project

by jnc＠mercury.lcs.mit.edu

> From: Pierre Gebhardt > There are indeed some DEC power brick models on epay, but none > regarding the H745. Here is one: https://www.ebay.com/itm/270303423286 but it is _really_ pricey. I have dealt with them before, they put high prices on things; try offering them a reasonable amount and see if they take it. Also, you could try contacting this guy: https://www.ebay.com/usr/patrick-j He has a lot of 'brick's listed, just not an H745, but he has a ton of stuff (I 'picked' his warehouse, it's enormous), and maybe he just forgot to re-list it when it expired, or something? Noel

7 years, 7 months

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SPARC Solaris 1.1.2 running in MAME

by aek＠bitsavers.org

on a simulated SPARCstation 1 https://forums.bannister.org/ubbthreads.php?ubb=showflat&Number=113948#Post…

7 years, 7 months

1
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Further Lisp Machine Developments

by jnc＠mercury.lcs.mit.edu

> From: Daniel Seagraves > I spun up a blog for posting the ongoing status of things; Cool! Thanks! Very interesting... How many cards came with the CADR? My memory is dim, are there just memory and I/O cards, or was the disk controller on a separate card from other I/O? I wonder how many physical CADRs are left in the world? Anyone have a list? Noel

7 years, 7 months

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Free: flash cards / SRAM cards (PC Card, PCMCIA cards)

by sieler＠allegro.com

These have been claimed, and two people are in line behind the first person. thanks. Stan

7 years, 7 months

1
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ISO Tandy 1000 EX 360k floppy drive

by drlegendre＠gmail.com

Folks, Trying my luck again. Looking for an external floppy drive for a Tandy 1000 EX XT clone.. They can be recognised by their white case and 30-pin female card edge connector cable. Please let me know if you have or know of one. Been looking for many years. Thanks, Bill On Sep 14, 2018 11:27 PM, "John Klos via cctalk" <cctalk at classiccmp.org> wrote: Hi, list, I've lurked here a bit but haven't posted much yet. I'm now working on a system that I think people here might know something about. Can anyone here tell me whether the CPU modules from an AlphaServer ES45 will work in an AlphaServer DS25? According to Wikipedia, they're both EV68CB CPUs. Some sites (including HP's QuickSpecs) list the 1.25 GHz ES45 CPU card as containing 16 megs of cache, but some places list the 1.25 GHz card with just 8 megs, like the 1 GHz card. If I could find a 1.25 GHz CPU card with 16 megs of cache, and if it'd work, I think it'd be a worthwhile upgrade to my DS25. Thoughts? Thanks, John

7 years, 7 months

5
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Free: flash cards / SRAM cards (PC Card, PCMCIA cards)

by sieler＠allegro.com

Free for pickup in Cupertino (or, pay for packing/shipping via PayPal): Some PC Card memory/flash-drive cards... not tested (Oddly, my 2016 Mac Pro Laptop has no PC Card slot! :) (no, really, I don't recall getting a chance to test them when I bought them over the last 10+ years, either, sorry!) 5 items: PMC SRAM Card 2 MB P/N SM002M-NN (needs CR2325 battery, no sign of corrosion) Fujitsu 64KByte SRAM Memory Card (ICMC v4.0) Intel FLASH Series 2 10 MByte Memory Card (1993) Simple Technologies (new in box) FLASH Storage ATA-800MB Type I PCMCIA P/N STI-ATAFL/800 Simple Technologies (new in box) FLASH Storage ATA-800MB Type I PCMCIA P/N STI-ATAFL/800 First one to ask, via offline email to sieler at allegro.com, gets them. As usual, I'll notify the first couple of responders personally. thanks, Stan

7 years, 7 months

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I finally got to see a LMI Lambda in real life...

by jnc＠mercury.lcs.mit.edu

> From: Daniel Seagraves > Two of them in fact, and a CADR - In my garage, no less! Neat! Can you say anything about how they came to you? > and I have a working PDP-11 to debug the CADR with Was that part of the package, or did you already have it? Noel

7 years, 7 months

1
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Cossor DIDS 400 needs saving ( Paris )

by jos.dreesen＠greenmail.ch

This link from fr.comp.ordinosaures is interesting http://f6aoj.ao-journal.com/crbst_752.html Would be a shame if this really ancient videoterminal goes to waste. As an aside : what a beautiful name the french have for there old computers : "ordinosaures" Jos

7 years, 7 months

5
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Free: IDE Flashdrive 3.5"

by sieler＠allegro.com

Hi, Still cleaning my storage/office ... I have a new-looking 3.5" solid state drive for free, pickup in Cupertino (or pay for packing/shipping via PayPal). SanDisk 3.5" Flashdrive 20 MB (IDE) model: SB35B-20 (possibly unused; in anti-static bag, seal unbroken) thanks, Stan

7 years, 7 months

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Free: IBM Travelstar 8E External Hard Drive

by sieler＠allegro.com

Free (pickup in Cupertino, or pay for packing/shipping via PayPal). IBM Travelstar 8E External Hard Drive. New in box. Includes the PCMCIA card and cable. Model: DTZN-0810SP Capacity: 8,100 MByte Note: as sold new by IBM, including the instruction sheet which says: power is provided by the PC Card, no A/C adapter is needed, and that you should ignore the green power switch on the box. First offline *email* to sieler at allegro.com gets it. thanks, Stan

7 years, 7 months

1
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AlphaServer CPU compatibility question

by john＠ziaspace.com

Hi, list, I've lurked here a bit but haven't posted much yet. I'm now working on a system that I think people here might know something about. Can anyone here tell me whether the CPU modules from an AlphaServer ES45 will work in an AlphaServer DS25? According to Wikipedia, they're both EV68CB CPUs. Some sites (including HP's QuickSpecs) list the 1.25 GHz ES45 CPU card as containing 16 megs of cache, but some places list the 1.25 GHz card with just 8 megs, like the 1 GHz card. If I could find a 1.25 GHz CPU card with 16 megs of cache, and if it'd work, I think it'd be a worthwhile upgrade to my DS25. Thoughts? Thanks, John

7 years, 7 months

1
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wanted: Cromemco Cyclops drop me note offlist thanks Ed# www.smecc.org

by couryhouse＠aol.com

wanted: Cromemco Cyclops drop me? ?note offlist? thanks? Ed#? www.smecc.org

7 years, 7 months

1
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HP 9845A Computer

by peterbrown10＠hotmail.com

I'd be interested too if the machine is in Europe ... Peter ________________________________ From: cctalk <cctalk-bounces at classiccmp.org> on behalf of cctalk-request at classiccmp.org <cctalk-request at classiccmp.org> Sent: 14 September 2018 17:00 To: cctalk at classiccmp.org Subject: cctalk Digest, Vol 48, Issue 14 Send cctalk mailing list submissions to cctalk at classiccmp.org To subscribe or unsubscribe via the World Wide Web, visit https://eur02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.classi… or, via email, send a message with subject or body 'help' to cctalk-request at classiccmp.org You can reach the person managing the list at cctalk-owner at classiccmp.org When replying, please edit your Subject line so it is more specific than "Re: Contents of cctalk digest..."

7 years, 7 months

2
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HP 9845A Computer

by marlenekleinoh＠gmail.com

Hi! We have an HP 9845A computer (1977) in working condition. Can we post it on your site? Thank you, Marlene

7 years, 7 months

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HP 9845A Computer

by Richard.Sheppard＠telus.com

My comment was going to be "you just did :>)" Richard Sheppard

7 years, 7 months

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Unknown US manufacturer - try again

by peter＠vanpeborgh.eu

Guys, See these photos: https://scontent.flhr2-2.fna.fbcdn.net/v/t1.0-9/35682272_10216634445119982_2 53889771863015424_n.jpg?_nc_cat=0&oh=74459af2e9232dd433046b2a9d43dedd&oe=5BC F55A0 and https://scontent.flhr2-2.fna.fbcdn.net/v/t1.0-9/36244235_10216691120256825_4 287682979926376448_n.jpg?_nc_cat=0&oh=e8ab72feb9eb1cf311c7ef0546318e44&oe=5C 1358C6 The photos are of a board I recently obtained for my collection. I've not, to date, been able to discover who the manufacturers were. It almost certainly US, The chips are week 27 of 1970, NAND gates. Can anyone help? Many thanks, peter || | | | | | | | | Peter Van Peborgh 62 St Mary's Rise Writhlington Radstock Somerset BA3 3PD UK 01761 439 234 || | | | | | | | |

7 years, 7 months

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Unknown US manufacturer - victory!

by peter＠vanpeborgh.eu

Many thanks to all for the detective work. The page 3-34 mentioned is in a Lawrence Livermore course manual on Fundamentals of Digital Sytems Training. I love you all and will try to test you again soon. peter || | | | | | | | | Peter Van Peborgh 62 St Mary's Rise Writhlington Radstock Somerset BA3 3PD UK 01761 439 234 || | | | | | | | |

7 years, 7 months

1
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HP 2000 / 2100 emulator

by pete＠petelancashire.com

Here's what I'd like to do. I have both a teletype 33 and 35. What would be fun is the foot in the pedestal a emulator that lets me pretend I am logging into a 2000 or 2100 and I can do basic and save files. One of those files being what I think was called to Star Wars or something like that. Basically replay my youth on a 35 which I had access to before 33.

7 years, 7 months

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Kennedy 9610 Available at VCFMW.

by useddec＠gmail.com

Please contact me off list. Thanks, Paul

7 years, 7 months

1
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Apollo, TEK

by useddec＠gmail.com

Apollo motherboard dated 1988 013034 Apollo 008231 memory board Apollo 0121173-001 with daughter board high res color display board Tektronix 46UTXGC1006 3 button mouse, Logictech # is 119-18098-00 Can ship or drop off at VCRMW. I'm starting to get organized!!! Thanks, Paul

7 years, 7 months

1
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Portable terminals

by r_a_feldman＠hotmail.com

>Message: 18 >Date: Sun, 9 Sep 2018 14:23:13 +0200 >From: Carlo Pisani <carlojpisani at gmail.com> >To: technoid6502 at gmail.com, cctalk at classiccmp.org >Subject: Re: Portable terminals > >we (at http://www.downthebunker.xyz<http://www.downthebunker.xyz/>) are developing a project that is >a portable vt100 in laptop shape. > >done with modern components, essentially it's an FPGA + LVDS circuit >to drive the LCD >the chassis will be manufactured by laser-cutting plastic planes, then >assembled with glue. > >it's not yet a public project since it's a personal team internal >work, but maybe ... > >anyway, the firmware is barebone, with a simple OS that runs directly the VT100 >Il giorno dom 9 set 2018 alle ore 08:25 Jeffrey S. Worley via cctalk ?<cctalk at classiccmp.org> ha scritto: >> >> Data General made a nifty and flexible terminal called "Walkabout". It >> had 32kb of internal memory one could use to take notes on the move. It >> ran on a 12volt wall wart which charged an onboard nicad battery. <snip> If you want a small, portable, battery-powered terminal, get an HPLX palmtop (95, 100 or 200). Runs for weeks or months on two AA batteries. The HPLX palmtops have a VT100 emulation. I have not had a need to use it, but Tony has and perhaps can comment on its fidelity to the real thing. Bob

7 years, 7 months

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AlphaWindows - Protocol Information?

by Martin.Hepperle＠MH-AeroTools.de

Brian, thank you very much for the scans. The scan is very nice and the document looks very interesting. I would like to make some experiments to learn how the system works, but first I have to obtain the missing keyboard for my HP 700 terminal. Just replaced the line filter capacitors to avoid the WIMA-RIFA-sound-n-smell (TM). I have also read out the EPROMs with the operating system and sent them to bitsavers if they want to archive them. Martin (Germany) > -----Original Message----- > ... > 3. Re: AlphaWindows - Protocol Information? (Brian L. Stuart) > ... > ------------------------------ > > Message: 3 > Date: Mon, 10 Sep 2018 18:06:59 +0000 (UTC) > From: "Brian L. Stuart" <blstuart at bellsouth.net> > To: <cctalk at classiccmp.org>, Al Kossow <aek at bitsavers.org> > Subject: Re: AlphaWindows - Protocol Information? > Message-ID: <651900294.1493946.1536602819815 at mail.yahoo.com> > Content-Type: text/plain; charset=UTF-8 > > On Wed, 9/5/18, Al Kossow via cctalk <cctalk at classiccmp.org> wrote: > > Martin and I thank you! > > Al and Martin, > I've run the standard though our fancy copier > at the office and had it scan at 400dpi, bilevel > directly to PDF. A quick look with xpdf seems > to be a pretty decent scan. I've put it up here: > > http://cs.drexel.edu/~bls96/alphawindows.pdf > > I also had a sales slick from ADDS for their > 4000/AWT terminal that supported AlphaWindows. > I went ahead and scanned that one in color: > > http://cs.drexel.edu/~bls96/adds_4000awt.pdf > > Hope that helps, > BLS > > > ------------------------------

7 years, 7 months

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VT100 emulation

by lproven＠gmail.com

On Mon, 10 Sep 2018 at 19:35, Ali <cctalk at ibm51xx.net> wrote: > > > > Anything that runs a more up to date version of Android? > > > > Sure. The Gemini. > > > > https://www.planetcom.co.uk/ > > > > I have one. It's a lovely little device and quite well-made. I am not > > sure how robust it will be long-term. > > That is a nice device. I wonder if it is available in the US. Do you know if they keep the OS up to date? Yes, it's available worldwide. I backed the kickstarter in January and got mine in July. I think they have now caught up with the backlog and are available at retail. I still have not received my peripherals yet, though -- nobody has. But the company is doing OK and discussing a 2nd model. They plan to update Android but so far there's only been one update. It's currently on Android 7.1. I'm hoping for 8 with Project Treble. The retro angle is that it's a licensed successor model to the late-1990s Psion Series 5 and 5MX. It has the same keyboard, licensed >from Psion. The modern machine is thinner and does not have a removable battery (sadly). It also runs Debian Linux and Jolla Sailfish. -- Liam Proven - Profile: https://about.me/liamproven Email: lproven at cix.co.uk - Google Mail/Hangouts/Plus: lproven at gmail.com Twitter/Facebook/Flickr: lproven - Skype/LinkedIn: liamproven UK: +44 7939-087884 - ?R (+ WhatsApp/Telegram/Signal): +420 702 829 053

7 years, 7 months

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Beehive terminals

by jhj＠trnsz.com

The Beehive ATL-008 might be an obscure terminal today, but it holds a special place in my heart as the first hardware terminal I used extensively, and was advanced (for 1982), supporting user programming in C. It's an advanced ANSI/VT102 terminal. It was based on the 68008 and had quite the nice interface, and extensions like soft keys. There is a TerminalWiki entry at https://terminals-wiki.org/wiki/index.php/Beehive_ATL-008 and Bitsavers has the manuals at http://www.bitsavers.org/pdf/beehive/. A somewhat defining feature of this terminal was that the cursor control keys was on left hand side of the keyboard, which many found better optimized for data entry tasks. The Beehive 3270 terminal was also quite advanced. I was wondering if anyone might have one of these terminals - or at least the ROM from one, so it might be possible to pursue emulation? Is there anyone who is into rescuing and preserving the firmware from the terminals of the past? -- Jeffrey H. Johnson jhj at trnsz.com https://ban.ai/multics

7 years, 7 months

2
2
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WTB: 64K cache SIMM (72-pin)

by spectre＠floodgap.com

Trying to restore an Alpha Micro ColdFire-based system, and it's missing its cache SIMM. It works without it, but it sure would be nice. AM doesn't have much info on it but it appears to be a 72-pin 64KB SIMM (unknown speed), same keying as 72-pin RAM SIMMs. I doubt this is a custom part and ISTR that PCs of around that time used something similar. If you've got something like this mouldering in your parts drawer, please advise. Thanks! -- ------------------------------------ personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com -- Heisenberg may have been here. ---------------------------------------------

7 years, 7 months

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AlphaWindows - Protocol Information?

by blstuart＠bellsouth.net

On Wed, 9/5/18, Al Kossow via cctalk <cctalk at classiccmp.org> wrote: > Martin and I thank you! Al and Martin, I've run the standard though our fancy copier at the office and had it scan at 400dpi, bilevel directly to PDF. A quick look with xpdf seems to be a pretty decent scan. I've put it up here: http://cs.drexel.edu/~bls96/alphawindows.pdf I also had a sales slick from ADDS for their 4000/AWT terminal that supported AlphaWindows. I went ahead and scanned that one in color: http://cs.drexel.edu/~bls96/adds_4000awt.pdf Hope that helps, BLS

7 years, 7 months

1
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RK07's , controller, packs at VCFMW

by useddec＠gmail.com

If anyone is interested, I have 2 RK07 drives, controller and packs I can bring to VCFMW. Would prefer to sell as a package, but will consider breaking up. Any reasonable offer. Thanks, Paul

7 years, 7 months

1
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SETASI UNI-BUS Cache?

by useddec＠gmail.com

Is anyone familiar with this? It looks like a M9202, but has logic on both boards. Maybe memory management? Thanks, Paul

7 years, 7 months

1
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OT(?): A word processor for handwriting

by rtomek＠ceti.pl

Perhaps something of interest for people here: http://www.styluslabs.com/ (source: https://news.ycombinator.com/item?id=17858641 ) I was a bit mixed about this until I read that single written page had 1.4 mbytes - after that I finally understood this "writing tool" is worse than Word ever was (or is it?). So it is going to catch up with people (or some derivation of idea). So now I am destined to... defending MS Word? -- Regards, Tomasz Rola -- ** A C programmer asked whether computer had Buddha's nature. ** ** As the answer, master did "rm -rif" on the programmer's home ** ** directory. And then the C programmer became enlightened... ** ** ** ** Tomasz Rola mailto:tomasz_rola at bigfoot.com **

7 years, 7 months

1
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Portable terminals

by technoid6502＠gmail.com

Data General made a nifty and flexible terminal called "Walkabout". It had 32kb of internal memory one could use to take notes on the move. It ran on a 12volt wall wart which charged an onboard nicad battery. The lcd screen is not backlit but it was useable in most any light. The sliders on the face note-book-like machine controlled contrast and darkness. I used one as the head unit for my Data General MV4000/DC. The battery is likely dead on any you'll find, but it is easily accessible by a sliding cover on the side which when removed reveals a pack you can unplug and replace without tools. It supported a fair list of emulations selectable on-screen including vt220 and vt100 plus various proprietary 'Dasher' emulations. The keyboard is better than most modern-day notebooks, it is VERY light- weight and pretty sturdy. Here's a link to a photo. http://www.digibarn.com/collections/systems/dg-walkabout/DSC06218.JPG Jeffrey S. Worley

7 years, 7 months

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VCFMW - Zilog PDS8000 Model 20, NCR 1102-6000

by marvin＠west.net

I have a Zilog PDS8000 Model 20 with some disks and manuals. It has not been powered up since I first got it some 20 or so years ago (total guess.) It was previously owned by a software developer. The boot disks are still in the 8" drives :). The NCR 1102-6000 is another one that I picked up years ago (who knows how many) and it has not been powered up in the time I've had it. Includes keyboard and original disks/manuals. Has two cartridges... one looks like a parallel printer and the other I didn't pull out (memory?). These are things I won't bring unless they are sold before I bring them. The operating condition is totally unknown. So if there is any interest, please let me know with offer. My plan is to leave for Chicago on Tuesday.

7 years, 7 months

1
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VT100 emulation

by ullbeking＠andrewnesbit.org

Hello all, The current discussion about why VT100?s are so popular got me to rethinking a related topic. I?ve been thinking about this in the back of my mind for quite some time. First, what is the most faithful emulation software that runs on *nix systems? Or is it the case that if you are running, say, GNU/Linux in console mode, or xterm on X11, that you can get a fine emulator simply by having an accurate terminfo entry? Second, does there exist anything like a ?VT100 operating system?, that emulates the VT100 directly on the bare metal of the machine? In this case you?d use the external serial port to connect to the target machine. One example use case I have in mind here is connecting a serial cable to a server?s BMC serial port for maintenance purposes, if it supports the VT100 protocol, in crash cart scenarios. Is it possible to do something like this by using the server?s PS/2 keyboard port and VGA monitor port? So, essentially a KVM without the ?M?? Is there some obvious constraint that I?ve missed? Kind regards, Andrew Sent from my mobile phone

7 years, 7 months

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Teletype mod 40 PSU

by cclist＠sydex.com

On 09/08/2018 08:10 PM, Ed Sharpe wrote: > Yepper?? the? material that holds all together... > ? > I? remember? back in the? first? year in? Computer? Biz? we? came across > one of these and it was? fun? to watch it? run self? test.... fast!?? > sold it to someone that had one and interfaced it already... > ? > Always? wanted? later? a combo? for museum? display of the? CRT and the? > Printer... There is a great? glossy that? shows up on ebay? time to time > that was a press photo of a gal? with the combo at a desk... It's a bit surprising to see how few pieces of old peripherals have survived. Sometime around 1985, we had a VAX 11/750 driving two CDC (MPI) big 1500 (IIRC) LPM printers. I don't know whatever became of them, but we couldn't have been an isolated instance. It seems that more CPUs have survived than the accompanying peripherals. This, in spite of installations with oceans of disk and tape drives, for example. --Chuck

7 years, 7 months

1
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Teletype mod 40 PSU

by useddec＠gmail.com

I have a teletype 40PSU101 I can drop off at VCFMW or mail, but is is a bit heavy. If you have any interest, please contact me off list. Thanks, Paul

7 years, 7 months

4
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PDP11/15

by useddec＠gmail.com

If anyone has serious interest in one, please contact mo off list.. I can bring it to VCFMW. Thanks, Paul

7 years, 7 months

1
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HP 260

by sieler＠allegro.com

Hi, I have an HP 260 that I'd like to find a new home for. I'm currently thinking of taking it to the ham radio / antique-computer swapmeet (ASVARO, held at Fry's Sunnyvale, CA, tomorrow morning). Thought I'd mention it here in case someone was interested in it. For those unfamiliar with it, it's small enough to fit in a Contico. https://www.facebook.com/hp260hp250preservationProject has a photo (in a cabinet with a disk drive) on the far left. www.hp260.net has some info about them. Stan (Cupertino, CA, USA)

7 years, 7 months

2
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VT100s

by mark＠matlockfamily.com

One terminal system I haven?t seen mentioned is the VT LAN40. I bought one new in the box about a year ago from Keyways ($400) and have found it to be very useful although it is not contemporary with most of the DEC systems we discuss. It needs a flat screen monitor, but can have multiple windows that allow cut and paste between between serial ports and it can talk LAT, CTERM, Telnet on its ethernet port. It has a mouse and does a great VT340 emulation. The unit can Mounted vertically and take very little bench space, but as has been mentioned before the keyboard is a typical VT420 sized keyboard. It has a history buffer so has many of the advantages of a good software emulator but is very accurate in the emulation. It gives me a single screen and keyboard that I can use to simultaneously work with my RSX11M+ (via LAT), the RT-11 MINC via serial and the two VAXes and any RPi?s running linux. The CPU is a little slow but response is acceptable. The ROMs in it might have bit a good starting point for reverse engineering. I think Keyways has a number of them and believe he will sell to hobbyists at the lower price above. I found this description at https://vt100.net/dec/vt_history VT LAN40 In February 1995, Digital announced the VT LAN40, a colour windowing network terminal. This device was a diskless PC, containing Windows 3.1 in ROM, and supporting up to eight terminal sessions over LAT, DECnet, TCP/IP or serial line, using TD/SMP. The system box and mouse had a suggested list price of $890. It connected to standard PC keyboards and monitors. Mark

7 years, 7 months

1
0
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Oddball Terminals (Was: Re: VT100's)

by jnc＠mercury.lcs.mit.edu

> From: Al Kossow > I just put up some pictures of the vt02, 05 Those useable for the CHWiki (with credit, of course)? Oddly enough, I just did the article on the VT05 about a week ago! Noel

7 years, 7 months

1
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LSSM - Large IBM haul

by jnc＠mercury.lcs.mit.edu

> From: Anders Nelson > Their latest comments on Facebook mention they're about halfway there. Yeah, but I was wanting to know how things had gone since that posting (although I haven't looked to see if there's any update). As of last night, they'd made significant progress past what was in the posting, but still had a ways to go. I've just sent in a chunk, so I think I have the standing to appeal for others to help, too! :-) It's a really worthwhile cause - there aren't that many System/370's left in the world! (I know, I know, not as cool at the /360, but still important.) Here's the URL again: https://www.facebook.com/503408869821526/posts/1084448565050884/ with the details of the appeal. (You don't need to be a FaceAche member to read it; I'm not, and it came up OK for me.) Noel

7 years, 7 months

1
0
0 0

VT100's

by jnc＠mercury.lcs.mit.edu

> From: Paul Koning > inside are a whole pile of boards, all single-sided etch with many > hundreds of jumpers to compensate for not being two-sided. Not cheap, > presumably If memory serves, didn't the VT52 also have single-sided boards with a whole bunch of jumper wires? Something relatively common, anyway, if not the VT52 - I clearly remember the masses of jumpers on something, and Tech Sq had scads of VT52's (to the point where VT100's were not that common when they did show up, we were already full up). Presumably, with automated placing machines, the jumpers were cheaper than a large double-sided board (the VT52's boards were huge)? I'm assuming _someone_ did the math (including the amortization of the placing machine, which would take longer to complete such a board). > From: Al Kossow > The biggest hardware innovation was smooth vertical scrolling > ... > I've never liked the feature IIRC, we generally turned it off because it couldn't keep up at 9600 baud. Noel

7 years, 7 months

2
1
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VCFMW DEC VTs, LAs

by useddec＠gmail.com

Is anyone interested in any DEC VT50, VT52(ONE WITH PRINTER), VT78, any of the VT100 family, or any other video terminals or monitors or parts? LA35, LA36, LA120, any other printer or parts? Anything else? If asked, I will try to bring. Thanks, Paul

7 years, 7 months

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VT100's

by tshoppa＠wmata.com

Zane, are you talking about the VT100 specifically, or the whole VT1xx line? My gut feeling is that the VT100 was at most 20% of the production in the whole VT1xx line. The internal expandability of the VT100 was a cool idea, but overall sales of VT101, VT102, VT131, and VT132 have to dwarf the original VT100. Then there's the VT103 and VT180 which are more than just terminals but still in the family. I should go through my old pictures from the 1990's. At one point I had an entire garage filled with hundreds of VT1xx's. Tim N3QE

7 years, 7 months

1
0
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VCFMW - looking for a BC80D-5K (DECMATE) disk cable/OS8 disks (RX02)

by billdegnan＠gmail.com

I have asked Paul Anderson to see if he has a BC80D-5K cable for a DECMATE VT278 (same as VT78) to RX02 pedestal twin drive. I am also looking for the OS/8 disks. I am pretty sure my VT278 works, I have some spare parts too, just need the cable and the disks hopefully to have a working OS/8 system. SO - If Paul has no cable/disks and if anyone going to VCF MW looking to make a deal for these items, please contact me through my site, https://www.vintagecomputer.net/contact.cfm Thanks Billl

7 years, 7 months

1
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Weird and ancient IBM offline memory devices

by peter＠vanpeborgh.eu

Vintage techie guys and girls, Second attempt - hope springs eternal. Do any of you know where I could get hold of IBM 3850 Mass storage and IBM 2321 Data cell media? 1960s-1970s. See: https://en.wikipedia.org/wiki/IBM_3850 https://en.wikipedia.org/wiki/IBM_2321_Data_Cell If you do, I would like to get hold of one of each. Many thanks, Peter

7 years, 7 months

1
0
0 0

Newcastle Connection Sources?

by holger.veit＠iais.fraunhofer.de

Hi, for some research on ancient Unix, I am interesting in finding the source code (tape, etc.) of the so-called "Newcastle connection", aka "UNIXes of the World Unite!" . See, for instance, https://pdfs.semanticscholar.org/13f8/6c18fa780031d76b80f359d6670f9f3debdc.… or ftp://ftp.informatik.uni-stuttgart.de/pub/cm/pcs/NewcastleConnectionR1.0_1983.pdf for details. There are a few more papers which I know as well. Does someone have the source tape or pointers to it? THX in advance -- Holger

7 years, 7 months

1
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HP 9885M Flexible Disk Drive available

by k7kt＠yahoo.com

Hi Mark ! Ran across your 2016 note at ( http://www.classiccmp.org/pipermail/cctalk/2016-July/025530.html ) while looking for info on the HP9885M Disk Drive. I have one of these old drives in what appears to be near mint condition. I can't fully test it, don't have any disks, but it powers up without any magic smoke leaking out. LEDs lit up, capstan drive is working, belt is in pristine condition, ventilation fan is working, boards are powered. Certainly looks like it's ready to go. I've carried the thing all over the country as I've moved between jobs, intending to use the chassis in construction of a different electronic device. It has spent a lot of time in closets. I don't have an HP9825A or HP9845 computer and I'm getting too old to acquire such toys. If you have interest, I would like for someone who understands and appreciates such things to have it. I can share pictures. It would be a shame to disassemble such a well-built old beast. Please let me know. Have a great week! Ernie K7KT at yahoo.com

7 years, 7 months

2
1
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Free: DDS-1 tapes, unused (new-old stock)

by sieler＠allegro.com

The DDS cleaning tapes have been claimed. I may have more unused cleaning tapes in storage, but I won't know for a few months. If I find any, I'll post. Stan

7 years, 7 months

2
1
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What platform can run m68k COFF binaries?

by blstuart＠bellsouth.net

On Wed, 9/5/18, Ethan Dicks via cctalk <cctalk at classiccmp.org> wrote: > The part that puzzles me is the collection of object files and > binaries in the directory above that.? 'file' tells me that they are > "m68k COFF" files.? From what I've read so far, COFF binaries are from > System V Release 2-4.? What I can't reconcile is what they might have > been compiled on.? Is it possible these were made for A/UX?? The > relevant file dates (late-1988 through mid-1989) do overlap > availability of A/UX version 1. I'm pretty sure the AT&T UNIX PC (7300/3b1) used COFF. I remember messing around with it when porting an old version of gcc to the machine. At that time, GNU was playing around with something called robotusin (COFF medicine). BLS

7 years, 7 months

1
0
0 0

VMS Mosaic 4.2

by spectre＠floodgap.com

I'm worried that VMS Mosaic 4.2 is lost since WVNET's VAX systems are no longer operational, and it was stored on their FTP server (not somewhere that the Wayback Machine got to). I only have an old version of 3.6 and a diff of 4.2. Does anyone have the original copy of 4.2? It was named MOSAIC4_2.ZIP. What I've got is here: gopher://gopher.floodgap.com/1/gopher/clients/vms/ -- ------------------------------------ personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com -- The world is coming to an end. Log off now. --------------------------------

7 years, 7 months

7
9
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AlphaWindows - Protocol Information?

by Martin.Hepperle＠MH-AeroTools.de

In the 1990s a computer terminal standard "AlphaWindows" was proposed by the Display Industry Association (DIA). Sort of X-Windows for the poor. A few terminals appeared which supported multiple text windows following the this standard. Some limited global facts can be found in Wikipedia. I learned that for example the TeleVideo 995 and 9089 or the HP 700/70 terminals supported AlphaWindows. Obviously there were several implementation levels like: (1) Basic AlphaWindow (2) Mouse Operations (3) Decorations (4) AlphaWindow Credits Flow Control Unfortunately I cannot find any information on the protocol resp. escape sequences and the DIA is long gone. Does anyone have a manual with escape sequences for one of the terminals mentioned? Or other material describing this protocol? Note that other terminals of the similar types (e.g. HP 700/71) do not support this feature. Martin

7 years, 7 months

3
3
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LSSM - Large IBM haul

by jnc＠mercury.lcs.mit.edu

> From: Anders Nelson > https://www.facebook.com/503408869821526/posts/1084448565050884/ This is an incredibly cool thing, and my hat is off to the LSSM for undertaking this. How's the fund-raising going? If money is still needed, I'll head off to Paypal and send a goodly chunk. Noel

7 years, 7 months

2
1
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AlphaWindows - Protocol Information?

by blstuart＠bellsouth.net

On Wed, 9/5/18, Martin Hepperle via cctalk <cctalk at classiccmp.org> wrote: > In the 1990s a computer terminal standard "AlphaWindows" was proposed by the > Display Industry Association (DIA). Sort of X-Windows for the poor. > > Does anyone have a manual with escape sequences for one of the terminals > mentioned? Or other material describing this protocol? It so happens that I do have a copy of the standard. I suppose I'm one of only a few who paid the $99 to DIA to get a copy. Back in the early '90s I started writing an implementation for the Mac, but ended up not getting very far before other projects pushed it down onto the stack. I'll see what I can do about scanning it for you. BLS

7 years, 7 months

2
1
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Milwaukee Computers MC-1200

by aek＠bitsavers.org

Another small project off my plate. Ethan had asked me years ago to make copies of the software for this machine. It is pretty obscure, one full page add in Byte, and it sank without a trace. 6502, p-System, totally custom MFM-encoded floppy interface based on a Moto 6852 synchronous serial interface chip. I had bought a Supercard Pro a while ago, and set it up to do some hard-sectored floppy imaging. Figured this would be a good test case, since it didn't have the problems with dealing with out of sync data streams (the SCP doesn't grok more than one sector hole so you have to turn off index synchronization). Made images, dragged my machine out of storage, cleaned it up, made a clone from the SCP image, and it booted! yay! SCP images are up under http://bitsavers.org/bits/MilwaukeeComputers I also put up cleaner images of the schematic and board layout, and annotated a disassembly of the boot prom from a scanned listing i've had for a while under http://bitsavers.org/pdf/milwaukeeComputers One thing I noticed that made me nervous is looking at the code there is no checksum on either the sector address or data fields on the floppy. I made an image of a floppy that I bulk-erased and initialized this morning, and all you see are the sync bytes and data, no trailing data where a crc would be.

7 years, 7 months

4
5
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VAX 11/785 "Superstar" Backplanes

by pbirkel＠gmail.com

On the 'bay: 183405165416 and 183405165414 "Scrap / Gold Recovery" Six total. One wonders what the scrappers did with the rest, and where they came from given that the location is Goffstown, New Hampshire. paul

7 years, 7 months

3
2
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Dilog DQ604 RL01 / RL02 emulation on ST506/ST412 disk.

by mattislind＠gmail.com

I unearthed some old TU58 tapes that luckily was readable (after carefully replacing the tension band) It resulted in two RT11 V4 images with two versions of the formatter program. One is bootable and the other not. http://storage.datormuseum.se/u/96935524/Datormusuem/Dilog/DQ604/sq604c.dsk http://storage.datormuseum.se/u/96935524/Datormusuem/Dilog/DQ604/sq604d.dsk I tried to run the formatter program in Simh: .run sq604C.sav TEST AND FORMAT DQ604 DISK SYSTEM (REV C.) DRIVE FORMATS AS RL01 UNIT (5.24 MB) SWITCH 3 CLOSED ENABLES BOOTSTRAP THERE ARE 17 PHYSICAL SECTORS PER TRACK (2) ALTERNATE CYLINDERS MAY BE ASSIGNED PER UNIT THE INTERLACE FACTORS ARE TWO OR THREE TO ONE DATA BUFFER ERROR USE PROCEED (P) TO REPEAT TEST HALT instruction, PC: 006312 (BR 6202) .RUN SQ604D TEST AND FORMAT DQ604 DISK SYSTEM (REV C.) DRIVE FORMATS AS RL02 UNIT (10.48 MB) SWITCH 3 CLOSED ENABLES BOOTSTRAP THERE ARE 17 PHYSICAL SECTORS PER TRACK (4) ALTERNATE CYLINDERS MAY BE ASSIGNED PER UNIT THE INTERLACE FACTORS ARE TWO OR THREE TO ONE DATA BUFFER ERROR USE PROCEED (P) TO REPEAT TEST HALT instruction, PC: 006312 (BR 6202) So it appears to be runnable. I also found the manual for the board and scanned it: http://storage.datormuseum.se/u/96935524/Datormusuem/Dilog/DQ604/DQ604.pdf Now the next step is to see if this can make the DQ604 board I have working with David Gessweins MFM emulator.

7 years, 7 months

3
6
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IOCCC 2018 Best of show

by pontus＠Update.UU.SE

Hi Sorry if this has been posted already. But some of you might get a kick out of this years "Best of show" winner of IOCCC: https://www.ioccc.org/2018/mills/ Cheers, Pontus.

7 years, 7 months

2
2
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Some late fifties HP measurement equipment available. ( Switzerland )

by jos.dreesen＠greenmail.ch

All, the following late fifties HP equipment is available in Switzerland. Stored in less than ideal conditions, but seem otherwise quite OK. Feel free to forward to more fitting mailing list / fora. Not my equipment, my only interest in this is saving these from the scrapheap. HEWLETT PACKARD TIME INTERVAL UNIT 526B HEWLETT PACKARD ELECTRONIC COUNTER 524C HEWLETT PACKARD DIGITAL RECORDER 560A ( Possibly a second HP524(b) , unsure of this ) I will forward email adresses tio the seller, up to you to complete. He expects to raise some money, unsure if realistic or not. Jos Dreesen

7 years, 7 months

5
4
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LSSM - Large IBM haul

by anders.k.nelson＠gmail.com

Hi all, In case others haven't seen this, the Large Scale Systems Museum has been given an opportunity to acquire a "near-mint" condition IBM System/370 and ES/9000 collection that has been maintained by a former field service tech since new: https://www.facebook.com/503408869821526/posts/1084448565050884/ Might be worth saving? =] -- -- Anders Nelson +1 (517) 775-6129 www.erogear.com

7 years, 7 months

1
0
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Free: DDS-1 tapes, unused (new-old stock)

by sieler＠allegro.com

They've been claimed, and I have someone in line, too. BTW, I may have a large number of unused cleaning DDS cartridges, too. thanks. Stan

7 years, 7 months

1
0
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Free: DDS-1 tapes, unused (new-old stock)

by sieler＠allegro.com

Hi, Anyone want 100 unopened/unused DDS-1 tapes? (60 from Sony, 40 from unknown) Still in original boxes :) Free for pickup in Redwood City, or negotiate with my office manager (to her benefit :) to ship them for you. thanks, Stan

7 years, 7 months

1
0
0 0

3 really old keyboards

by sales＠elecplus.com

https://bit.ly/2PxonDk https://bit.ly/2wH38rA Cindy Croxton Electronics Plus 1613 Water Street Kerrville, TX 78028 830-370-3239 cell sales at elecplus.com --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

7 years, 7 months

1
1
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Free: Dell Poweredge 2950

by sieler＠allegro.com

Anyone interested in a free dell poweredge 2950? (Free for pickup in Redwood City, CA, USA) Two 73 (?) GB SAS drives, some amount of RAM. Worked the last time it was powered on, about 2 years ago. No idea how much memory or other features. It was bought (used) to be a spare for another Dell, but once we realized the original Dell used SATA drives, we never used this one. We're moving offices, and this has to find a home or a scrapheap. (It was introduced about 2006, so that makes the 10 year classic cutoff :) thanks, Stan

7 years, 7 months

1
0
0 0

JLS Vidtek Big Board Xerox 820

by mso＠exoss.net

Hi, It was my company that produced that and I was one of the designers... JLS Computers (aka Vidtek). produced in Toronto similar to SBC BB1 Enrico Lazzerini enrico.lazzerini at email.it Mon Feb 9 16:30:06 CST 2015 Previous message: Memorex MRX IV 6250 BPI SuperReel Tape on sale - 4 reels maybe new Next message: begging drivers/docs for obscure old PC/Mac hardware Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] Hi, I'm a bit curious on this old historical motherboard derived from original Ferguson Bigboard 1. Is there anybody who have it and he can send a pic of it? Or Is there anybody who can describe it? I not found anything on internet, just all I report below: Micro/Access ????????????? | Toronto, Ontario????? (1983-1993) ??????? SYSOP | Max Southall ???? SOFTWARE | Custom by Bob Kamins and Max Southall ???? COMMENTS | "The Micro/Access BBS system grew out of the need to ????????????? | service the product line of the JLS/Vidtek Big Board ????????????? | project. The JLS Big Board was a reincarnation with ????????????? | hardware and software enhancements of the original ????????????? | Ferguson Big Board Z80 single board computer system sold ????????????? | to hobbyists. Redesigned by Joe L. Sutherland, with input ????????????? | from Bob Kamins, with later hardware, firmware and ????????????? | software fixes by Max Southall, it was a solid CP/M-80 ????????????? | based system which also was the basis for the Xerox 820 ????????????? | series. Customers (or any others) of the Big Board were ????????????? | charged $50 a year for access, which eventually included ????????????? | email access to the then research-oriented internet. ????????????? | There were hundreds of paying customers.? The BBS ????????????? | software based on Bob Kamins' work was written in ????????????? | Microsoft's BASIC, and compilation was with Microsoft's ????????????? | M80 compiler. <p> "Eventually Max Southall completely ????????????? | rewrote Stuart Lynne's (yes, the later ICANN chairman) ????????????? | UUPC program and incorporated an email program interface, ????????????? | all in assembler, which connected the Micro/Access BBS ????????????? | users via UUCP to Unix-based internet-based ????????????? | communications. <p> "Prior to 1985, the system was known ????????????? | online as the Vidtek system, which grew out of ????????????? | manufacturing video and CP/M boards for the Apple ][ ????????????? | clone systems. SCSI hard disk subsystems were ????????????? | manufactured and sold for the Big Board and sold all over ????????????? | the world, and the BBS used the same hardware as was sold ????????????? | to customers." - Max Southall Regards Enrico

7 years, 7 months

2
1
0 0

VWoCW - New Items Posted for Sale from Sellam's Collection

by sellam.ismail＠gmail.com

Hello Folks. I've got a new batch of stuff for your weekend perusing: A.R.T. Dutch Design EPP-1F E(E)Prom Programmer Radio Shack TRS-80 Twelve Meg Disk System Radio Shack TRS-80 Twelve Meg Disk System Radio Shack TRS-80 Color Computer Mini Disk Radio Shack TRS-80 Color Computer Mini Disk Radio Shack TRS-80 Color Computer Mini Disk Exatron Stringy Floppy Drive Exatron Stringy Floppy Drive Panasonic JR-200U Personal Computer Panasonic RK-P400C 4-color Graphic Penwriter Qume QumeTrak 842 8" floppy disk drive 1-800-FLOPPYS Smart Communications System MFJ MFJ-1278B Multi-mode Data Controller Suncom side-mount joystick controller TI PHP1200 Peripheral Expansion System Network Computing Devices NCD XploraPro XQ As always, an index of links to the specific items above is available for your convenience in the New Arrivals Niche: https://docs.google.com/spreadsheets/d/1I53wxarLHlNmlPVf_HJ5oMKuab4zrApI_hi… Thanks! Sellam

7 years, 7 months

2
1
0 0

WTB: Altair 680, Any Condition, Any Configuration

by systems.glitch＠gmail.com

All, I'm looking for an Altair 680. I've been working with Jeff Albrecht's A680 during the RAM board design process, and would like to continue working on a few things for the 680, but I'd also like to send Jeff's machine back to him! Configuration is not particularly important to me. I'd like something with a non-rev 0 motherboard in it if possible -- the easiest way to tell is that there will be a slot for the expansion riser. Front panel vs. turnkey, branding, etc. are not important to me. I'd potentially be interested in even an empty case! Thanks, Jonathan

7 years, 7 months

3
3
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Unisys keyboards

by useddec＠gmail.com

Two Unisys PCK105-SKB look unused, but one is yellowed. Sorry, I forgot to describe them as keyboards. Thanks, Paul

7 years, 7 months

3
2
0 0

Novapalooza in 2 months...

by Flash688＠flying-disk.com

> > Alan Frisbie via cctalk wrote: > > I always found it amusing that Data General's computers were > > named after transitory phenomena: Nova, Supernova, Eclipse. > Bruce Ray <Bruce at Wild-Hare.com> wrote: > > I see what you mean... sorta like the DEC "Rainbow"? Good one! I didn't see that coming. :-) Alan

7 years, 7 months

2
1
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Novapalooza in 2 months...

by Flash688＠flying-disk.com

Bruce Ray <Bruce at Wild-Hare.com> wrote: > Really, the Nova is 50? Yup - so join us in celebrating the personal and > technical impact of this youngster.. I always found it amusing that Data General's computers were named after transitory phenomena: Nova, Supernova, Eclipse. Of course, in the grand scale of things, we all are. :-( Alan

7 years, 7 months

2
1
0 0

Thicknet/10base5 Test Segment: The Cable is In!

by systems.glitch＠gmail.com

All, A few months ago, I mentioned one of my suppliers had Belden 89880 thicknet Ethernet cable. Well, last week I finally made it down to his warehouse and picked it up! The final bits for a test segment came in today, so I set up a little link between my SPARCstation 10 and DEChub 90: https://imgur.com/a/GDUR36j Anyone interested in cable can email me directly (please change the subject line, it'll get binned into my cctalk folder otherwise). I can provide any level of "kit" from just the cable to fully ready to go. I do have a very few NOS Cabletron ST-500-01 transceiver/non-intrusive tap kits as well. Thanks, Jonathan

7 years, 7 months

10
29
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PDP-11/04 on eBay

by jnc＠mercury.lcs.mit.edu

For those who didn't catch it: https://www.ebay.com/itm/202415330983 I have bought from this seller before (very happy with the results), but am not otherwise affiliated. The -11/04 is a nice UNIBUS starter/test machine (my UNIBUS board debug machine is an -11/04). The CPU is a single (hex) board, and it's really simple and straightforward - very easy to work on and fix. (You don't even need to put it on an extender card! :-) Depending on the backplane that's in the machine, it might be super-easy to upgrade to an -11/34 (if it's a DD11-P, as many /04's are, just pull the CPU card and plug in a set of /34 boards). Not sure what's up with the M105/M7821; they aren't standalone cards, but go with some other card (they are addressing and interrupt/vector functionality). No idea what it was, though... Noel

7 years, 7 months

1
0
0 0

Lear Sielger keyboard for parts or repair

by sales＠elecplus.com

https://www.elecshopper.com/lear-siegler-adm-11-keyboard-for-parts-or-repair .html Cindy Croxton Electronics Plus 1613 Water Street Kerrville, TX 78028 830-370-3239 cell sales at elecplus.com --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

7 years, 7 months

1
1
0 0

Computer Design & Automation (CDA), Simpact, EXCLAN

by useddec＠gmail.com

Does anybody know anything about these companies or their products? If you have any interest in them, please contact me off list. Thanks, Paul

7 years, 7 months

5
4
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DEC PDP 11 RK05 DEC custom (?) bootstrap board

by jnc＠mercury.lcs.mit.edu

> From: Paul Koning > the original ROM array bootstrap supports not just RK05 but also RF11, > RC11, and TC11 in just 16 words of code. Ah, the days of devices that just did what they were told without trying to be effing rocket scientists about it! (Yeah, yeah, I know _some_ of the things the later ones did, you had to be close to the hardware to do them, but too often they had this 'we're from the device manufacturer, and we're here to help you' thing going. I used to have a photocopy of a great article in a trade rag which explained why complex devices were a Bad Idea; maybe I can find it, if anyone's interested.) Noel

7 years, 7 months

1
0
0 0

DEC PDP 11 RK05 DEC custom (?) bootstrap board

by jnc＠mercury.lcs.mit.edu

> From: Bill Degnan > I am curious how I'd attempt to use one of these. Any thoughts? I'd start by dumping and disassembling. (If you need something to find out where in memory they are, I have a register discovery program that sweeps the I/O page and lists all locations that respond. It's probably 173xxx though, that's the DEC-allocated spare for ROM.) Noel

7 years, 7 months

3
2
0 0

Computer Design & Automation (CDA), Simpact, EXCLAN

by Richard.Sheppard＠telus.com

> Does anybody know anything about these companies or their products? I have a couple of Simpact VME form factor DSP cards (DSP-LC) which were used in a fancy telephone answering machine for radio stations. It was part of a big system which allowed listeners to call in and get the weather, lottery, joke-of-the-day etc. They could also enter contests and record their phone number via DTMF. Richard Sheppard

7 years, 7 months

1
0
0 0

CESI VM8128 PDP8-A 128 K MOS?

by allisonportable＠gmail.com

On 08/24/2018 07:06 AM, Rod G8DGR via cctalk wrote: > M8417 MSC8DJ?PDP8A 128K MOS? > > Clone of this > > > > Sent from Mail for Windows 10 > > From: Paul Anderson via cctalk > Sent: 24 August 2018 10:12 > To: General Discussion: On-Topic and Off-Topic Posts; cctech at vax-11.org > Subject: CESI VM8128 PDP8-A 128 K MOS? > > I have an idea what this might be, but I can't find anything to confirm it > on line. Can anyone shine some light on it? > > Thanks, Paul > its a 128 memory card If memory is right hex width for PDP-8A... The last of the omnibus 8s. That machine had extended the MMU used in earlier PDP-8 from 3 EMA lines to 5. Only fits the 8A chassis. Allison

7 years, 7 months

2
1
0 0

11LOGO

by lars＠nocrew.org

Hello, I have a 1972 version of 11LOGO, which is the dialect of Logo which was done by the Logo group at MIT. Their computer was a PDP-11/45. I have it running in a PDP-11 simulator, 11SIM, which runs on the ITS operating system. If someone is interested in running it in some other simulator like SIMH, I can provide files and assistance. The nice thing about 11SIM is that it emulates the one-off TK display system which provides 8 vector displays. 11LOGO uses it to view turtle graphics. It would be interesting to add this capability to SIMH, but I'm pressed for time. I can provide documentation, though. There is a second application, the Dazzle Dart game, which uses this display as well. It doesn't run in 11SIM because it uses FP11 instructions which are not implemented. Best regards, Lars Brinkhoff

7 years, 7 months

1
0
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Apollo motherboard dated 1988 013034

by useddec＠gmail.com

I just found it while sorting. If you are interested, please contact me off list. Thanks , Paul

7 years, 7 months

1
0
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Event Announcement: DEC Legacy is back on 17th-18th Nov 2018, Windermere UK

by mark＠wickensonline.co.uk

DEC Legacy 2018 is on! The next DEC Legacy will take place Saturday 17th November 2018 - Sunday 18th at the Marchesi Centre in Windermere, North West UK. With a focus on Digital Equipment Corporation and their legacy of hardware, software and ethos I'm also extending an open invitation to those who are interested in SGI, HP, Sun, IBM and other high end hardware to come along and share their passion with us. Several formal presentations will be mixed with plenty of hands on time with hardware brought by enthusiasts. Enthusiasts are encouraged to bring along hardware and software to exhibit. The personal nature of the event brings a unique atmosphere within which friendships are easily forged. Registration is now open. Please visit http://declegacy.org.uk for more details. Regards, Mark Wickens, M0NOM

7 years, 7 months

1
0
0 0

Microsoft DOS Fortran 5.1 graphics

by Martin.Hepperle＠MH-AeroTools.de

> I am looking for a sort of 'hello world' example and/or samples to use the > graphics library in this compiler, some sample code. My target is DOS and > the Compaq luggable mono display. > > > It looks like its all there, the library and include files for display adapters and > modes, but I cant find an example on the netwebs to get me started. > > > Anybody have a set of demo files or application source to study and to use > this? > > > I have TurboC running on this machine, and the graphics are great. Did > Microsoft have a similar set of examples for Fortran? > > > Randy > Randy, this compiler can generate executables for DOS, Windows and OS/2. It also came with the QuickWin libraries to create FORTRAN programs which output text and graphics in Windows. I am not 100% sure, but it is possible that the first release did not have the QuickWin libraries and it came with an update. When you install Microsoft FORTRAN 5.1 you have the option to install the SAMPLES. The README says: <cite> [...] \SOURCE\SAMPLES This directory also contains the source code for the graphics programs from chapters 11, 12, and 13 of the Microsoft FORTRAN Advanced Topics manual. Note that these examples require the graphics include files FGRAPH.FI and FGRAPH.FD. These files are copied to an INCLUDE directory by the SETUP program. In real mode (DOS), the programs must be linked with the graphics library GRAPHICS.LIB. In protected mode (OS/2), graphics is not supported, but you can compile text-only programs by linking with the text library GRTEXTP.LIB. The appropriate libraries are copied to your disk by the SETUP program. For example, use the following command line for DOS: FL COLTEXT.FOR GRAPHICS.LIB Or use the following command line for OS/2: FL COLTEXT.FOR GRTEXTP.LIB The programs are listed below: DOS only DOS or OS/2 -------- ----------- Chapter 11 CGA.FOR COLTEXT.FOR COLOR.FOR EGA.FOR GRAPHIC.FOR HORIZON.FOR REALG.FOR SINE.FOR Chapter 12 SAMPLER.FOR Chapter 13 ANIMATE.FOR CURSOR.FOR ARC.FOR MODES.FOR CGAPAL.FOR SCRTXWIN.FOR FIGURE.FOR SETROWS.FOR FILL.FOR TEXT.FOR FONTS.FOR WRAP.FOR MAGNIFY.FOR PAGE.FOR PALETTE.FOR STAR.FOR WINDOW.FOR [...] </cite> Those examples cover many aspects of the system. I only used the Windows part and I believe that under OS/2 there is no graphics, only cursor addressing. The graphics system offers similar capabilities to e.g. Borland's or Quick C's capabilities. regards, Martin

7 years, 7 months

1
0
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DEC PDP 11 RK05 DEC custom (?) bootstrap board

by billdegnan＠gmail.com

I have what I believe to be two DEC RK05 bootstrap boards each with a ROM labeled 802350 A. UNIBUS. The plastic handle tabs are Digital Equipm.'s but it could be an OEM as there is nothing printed on them. On the board is printed on what would be the bottom front side R-K ABBR BOOT P.C. BOARD 609395 REV B on one line and under that 802000 REV There is a round sticker on the back of the board written in pen that reads: LL 802000 Rev B 6-17-76 printed on the backside of the board near the sticker is 609395 REV B I use a M9312 to bootstrap from the monitor but I am curious how I'd attempt to use one of these. Any thoughts? Bill

7 years, 7 months

3
2
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A New Zealand-based early '80s microcomputer retailer talks about his experience

by terry＠webweavers.co.nz

This won't be of interest to everyone, but if you want to hear what it was like to open and run a microcomputer store in New Zealand back in the early 1980s, it's captured here. https://www.classic-computers.org.nz/blog/2018-08-23-viscount-electronics.h… Terry (Tez)

7 years, 7 months

1
0
0 0

Color of Leaky Electrolyic Caps?

by marvin＠west.net

I was just checking out the leaky capacitors on the model 100 motherboard, and they are all colored black. And ditto for the HX-20. The ones that are both light and dark blue look to be fine (no leakage.) So am I just seeing an anomaly, or is this the experience of most people here?

7 years, 7 months

3
2
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Epson HX-20, TRS-80 Model 100 Capacitor Kits

by marvin＠west.net

Since I have at least four Model 100 and HX-20s, I've decided to just replace all the aluminum electrolytics before repair becomes much more difficult. So far, I see the project as fairly easy depending on how bad the corrosion from the leaking caps is. Is anyone interested in buying a kit or two of the capacitors? I'm guessing buying the parts from DigiKey at low quantity prices will result in about $3.50 or so for the bag of about 13 capacitors. US postage will probably run a couple of dollars or so, but I can also bring them with me to VCFMW. I'll be ordering what I need unless I hear others might want the kits as well. On a similar topic, has anyone given up on cleaning out the corroded plated-Thru-Holes, and just soldered on some SMD caps? If so, how did it work out? Finally, just some observations on the corrosion. I finally found some information about the corrosion caused by leaking aluminum caps. It sounds like the leaking fluid, besides possibly damaging the copper traces, also does something to the solder in the PTH such that a soldering iron won't melt the solder. Right now, the solder doesn't want to melt so I will use a pin vise and about a number 62 drill or so to hand drill out the PTH solder.

7 years, 7 months

2
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Strange third party board in PDP-11/45

by jnc＠mercury.lcs.mit.edu

> As to what _else_ it is doing, and why it has the cable to the main > card... I think that it must intercept MSYN from the processor and only > let it pass if there's no hit in the cache. > (To explain why it would need to do that... normally with the MS11, > there's a static partitioning between FastBus memory and UNIBUS A > memory. So when the CPU goes to do a memory cycle, it can put the > address out on both the UNIBUS and FastBus, with the certainty that it > will only get a reply on one. So, my guess was wrong there. I had _assumed_ that when doing a memory operation, the CPU started a cycle on both busses, to minimize the delay on the UNIBUS cycle if the MS11 on the FastBus didn't have that location. (I had previously checked, and there is an 'I have that location' signal which the MS11 sends back, making the concept of a cache possible.) Well, no. In the "KB11-A CPU Maintenance Manual" (DEC-11-HKBB-D), section 7.7.1 ("Bus Control Introduction"), it says: If the address applies to a Fastbus device, that device will respond in time to inhibit the UNIBUS MSYN signal (It turns out the KB11-A is very clever; it has to delay for a bit after asserting the address, etc, signals on the UNIBUS, for de-skew, before it can assert MSYN, and during that delay, in parallel, it checks to see if the MS11 has that location.) So my theory about what that double-card does (prevent an MSYN sent to main memory on a cache hit) is apparently wrong. Which leaves the question of what that card _does_ do... The cache _does_ need to have the A and B UNIBUS tied together, so that it can snoop UNIBUS memory cycles (which are on the A UNIBUS) via the B UNIBUS (which is what it has access to on the backplane), _but_ it doesn't need a special card, with i) active logic, and b) a cable back to the main board, to do that - a regular M9200 will do that. The cable back to the main card, and the logic on the two dual-width cards, mean it wants to interfere somehow in the connection between the A and B UNIBUS. But if not the MSYN thing, what else could it be? I have pondered that question, but I can't think of anything. It can't be doing anything with interrupts or DMA, I would think, so no grant interception. So what else could it be? Anyone have any ideas? Noel

7 years, 7 months

2
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ACT Able, Datasouth

by useddec＠gmail.com

I have a bunch of Able items here If you have any questions, please contact me off list. If you have any info, please share it with us. several models of Quniverters 10028, 10028101, 10028102 some boards have 3 #s This is the mysterious PDP 11/45 board. RARE? 10033, 10033001, 10033002 PDP1134, 11/40 cache RARE? SN267 10003000, 10003001, 10003002 10049, 10049-0, 10049001,10049002 High speed link Datasouth board for LA36 I believe.

7 years, 7 months

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IMS DYNATECH, UNISYS, EECO Paper tape, Datamyte

by useddec＠gmail.com

This is a very old rack mount disk controller (has format switch) with what looks like ims on the 15 or so small boards. The backplane has DYNATECH on the back. Two Unisys PCK105-SKB look unused, but one is yellowed. DATAMYTE 1000 Data Collector EECO model # TRS9200BBDED, paper tape reader, no reels. The TRS9200 is on Bitsavers.org

7 years, 7 months

1
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Article on Gopher with Cam in it

by aek＠bitsavers.org

https://www.minnpost.com/business/2016/08/rise-and-fall-gopher-protocol They seem to have overlooked the fact that U-Minn never wanted to release control over Gopher.

7 years, 7 months

4
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Looking for Targa 1.0 drivers

by schlae＠gmail.com

I have some old Targa 1.0 video boards (dating back to their AT&T days) but no driver diskettes. Does anyone happen to have some? I think they should work with Targa 16 drivers.

7 years, 7 months

1
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NEC Multisync monitor manual

by Richard.Sheppard＠telus.com

> I am looking for a manual for the original NEC Multisync monitor. Mine is JC-1402 and the "User's Manual" I have is titled "MultiSync 3D". It mentions model JC-1404 but it all looks the same as mine. Is there anything in particular you need to know - or would you like a scan? Richard Sheppard

7 years, 7 months

1
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VAX 4000 Memory?

by holm＠freibergnet.de

Hi, I have an working VAX4000/300 and I'm looking for additional memory for this machine. Has anyone left over MS-670 Memoryboards that he wants to get rid of for an symbolic price? (or compatibles, clearpoint etc...) I'm ocated in germany.. Regards, Holm -- Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe, Freiberger Stra?e 42, 09600 Obersch?na, USt-Id: DE253710583 info at tsht.de Fax +49 3731 74200 Tel +49 3731 74222 Mobil: 0172 8790 741

7 years, 7 months

1
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Microsoft DOS Fortran 5.1 graphics

by rdawson16＠hotmail.com

I am looking for a sort of 'hello world' example and/or samples to use the graphics library in this compiler, some sample code. My target is DOS and the Compaq luggable mono display. It looks like its all there, the library and include files for display adapters and modes, but I cant find an example on the netwebs to get me started. Anybody have a set of demo files or application source to study and to use this? I have TurboC running on this machine, and the graphics are great. Did Microsoft have a similar set of examples for Fortran? Randy

7 years, 7 months

1
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IBM, Panasonic printers, Calcomp plotters, Versatec, SC08s

by useddec＠gmail.com

The following can be delivered to VCFMW or shipped: IBM 5152 personal computer graphics printer Panasonic MX-P1124 24 pin multi mode printer Several Calcomp table top plotters Versatec Unibus boards DEC SC08 Star Couplers Just looking for reasonable offers. Thanks, Paul

7 years, 7 months

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Announcing VCF Pacific Northwest 2019!

by mbbrutman＠brutman.com

*VCF PNW 2019 will take place March 23-24, 2019 at Living Computers: Museum+Labs in Seattle, Washington. We had a great time last year and we are going to try to make it even better this year.Exhibitor registration is open. I am also looking for speakers and volunteers to help me run the event. It seems early but time tends to speed up at the end of the year. Getting an earlier start should also help people who need to make travel arrangements.Are you thinking about traveling from outside of the region? There is plenty to do in Seattle while you are here, including the Connections Museum, the Pacific Science Center, MoPOP, the Boeing factory tour, etc.Interested? Check out http://vcfed.org/wp/festivals/vintage-computer-festival-pacific-northwest/ <http://vcfed.org/wp/festivals/vintage-computer-festival-pacific-northwest/> for more details or send me an email.Thanks,Mike*

7 years, 7 months

2
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Model 100/HX-20 LCD Display Problems

by marvin＠west.net

In getting ready for VCFMW, I started looking at some model 100s and HX-20 notebook computers. Most of them have blank LCD displays, so I figured there might be a common problem. So far, I've found leaky electrolytics on all of them, usually 10 uF, but there are some others with all of them so far associated with the LCD power supplies. The Epsons seem less prone to this than the model 100s, but both have the problem. Has anyone that has done repair work on these computers found the major problem to be leaky capacitors? My gut reaction at this point is to just replace all of the electrolytics. Does this sound like a reasonable longer term approach rather than just replacing the obvious leaky ones?

7 years, 7 months

2
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ISO Ewing PDP-11 FORTH

by aek＠bitsavers.org

There are several version of PDP-11 FIG-FORTH on the net, I'm trying to find the one from Marty Ewing originally DECUS 11-232, later for RT-11 The writeup for the RT-11 version shows up with a Google search https://manualzz.com/doc/20421230/forth-programming-system-rt11-decus-distr… FORTH PROGRAMMING SYSTEM RT11 DECUS Distribution Documentation File M. S. Ewing 18 October 1978 the files in it are: FORTH.DOC This file. FORTH.MAC Forth Macro source for the Forth "kernel" FORSYS.DAT Standard Forth text file XED.DAT Extended editor text BFP.DAT Basic floating point package EFP.DAT An extended floating point package MSG.DAT A minimal message file. I have some sources which use a Z80 threaded language called Terse that I believe is based on this kernel that I'm trying to archive (it's for some Bally arcade games)

7 years, 7 months

1
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A couple of fig-FORTH documents FTGH

by toby＠telegraphics.com.au

1) fig-FORTH 6502 Assembly Source Listing Release 1.1 with Compiler Security and Variable Length Names (Sept 1980) 2) fig-FORTH Installation Manual Release 1 With Compiler Security and Variable Length Names (Nov 1980) Free for shipping, located in Toronto Canada --Toby

7 years, 7 months

1
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DEC LA-12 (Correspondent) keycaps?

by dave＠661.org

I was wondering if anyone had any spare keys for a DEC LA-12 (aka Correspondent) printing terminal. I need the '1' key and the "DATA/TALK" key. -- David Griffith dave at 661.org A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

7 years, 7 months

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First 3.5 inch FDD [WAS: RE: Prototype IBM DemiDiskette drive]

by t.gardner＠computer.org

Well it all depends upon what u mean by "first" The Sony drive and cartridge were not compatible in many ways with what became the physical, magnetic and electrical interface standards for the 3.5-inch drive and cartridge. The standards came out of the "Microfloppy Industry Committee" (Google it with quotes) organized by Shugart Corp. Either Shugart or Tandon was the first to ship drives compatible to the standard. Tandon probably did the first such cartridge. The original Sony drive and cartridge died out and Sony didn't come out with a compatible set until well after Shugart and Tandon. The early adopters of the Sony design like HP then changed to the industry standard design. Tom -----Original Message----- From: Fred Cisin [mailto:cisin at xenosoft.com] Sent: Wednesday, August 22, 2018 1:25 PM To: General Discussion: On-Topic and Off-Topic Posts Subject: RE: Prototype IBM DemiDiskette drive >> I just picked up a Model 350 on eBay, just because I'd never seen a >> Shugart sub 5" drive. >> https://www.ebay.com/itm/Vintage-Sankyo-Shugart-Venture-Model-350- >> Computer-Disk-Drive-/253708808435 On Wed, 22 Aug 2018, Ali via cctalk wrote: > Interesting. I wonder if IBM was looking at those drives for use. The seller (or more accurately the seller's father) used to work for IBM Industrial services in Boca Raton. Well, the SA300 (single sided version) were not the first 3.5" drives, but they may have been the first 300 RPM ones with an SA400 interface. (The Sony 600RPM drives would require more changes) The SA300 could be dropped into a 5150 (with only issues of mounting brackets (Erector set) and power connector) and were supported by some OEM versions of MS-DOS 2.11. IBM public support of 3.5" began with PC-DOS 3.20.

7 years, 7 months

4
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Datic 2000 / Ampex 844 Documentation ?

by jos.dreesen＠greenmail.ch

Ran into an early CP/M system today, from german company Datic. It is a single-user 8080 system, featuring a delay-line based CRT output and an Ampex 844 fixed platter / removable 14" cartridge driver. Is this simply a Diablo 44 equivalent, as I suspect, or is this a true standalone development from Ampex ? First time I have seen a 14" drive on a CP/M system.... Jos

7 years, 7 months

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The near-mythical IBM color MDA

by schlae＠gmail.com

The NEC Multisync monitor thread reminded me that I used one to produce a video, and I thought a few of you might enjoy it. https://www.youtube.com/watch?v=-TiHFWH4NWk

7 years, 7 months

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CESI VM8128 PDP8-A 128 K MOS?

by useddec＠gmail.com

I have an idea what this might be, but I can't find anything to confirm it on line. Can anyone shine some light on it? Thanks, Paul

7 years, 7 months

2
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NEC Multisync monitor manual

by chd＠chdickman.com

I am looking for a manual for the original NEC Multisync monitor. Google fails me because of all the follow on monitors had Multisync in the name. -chuck

7 years, 7 months

2
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DTC TakeTen media?

by cclist＠sydex.com

On 08/23/2018 01:22 PM, jim stephens wrote: > > The Drivetec media was 6mb then 12mb.? The 6mb media worked well if you > repunched the floppies as AT high density media, and when DTC died a > huge amount was sold with instructions on how to do that, as the cost of > media was then still high for 1.2mb media. > I've only seen the 3.3MB and 6.6MB versions. The 3.3 was used on the Kypro "Robie". My 6.6 media was sent to me by the tech support fellow at Verbatim, just before they closed their Santa Clara operation. I already had the drive. The Drivetec drives were also sold by DTC as their "TeamMate" series of external drive/controller combos. There's a German auction of the TakeTen here: https://tinyurl.com/yax6tjvc You can see that the drive slot is considerably thicker than a normal floppy disk--and it's identified as a "Removable Cartridge Disk Drive". Again, I don't recall ever seeing the cartridges. DTC did a lot of strange things. I first knew them as manufacturing a sheet feeder for the Diablo Hitype printer. I still have a few of their disk controller cards and some SCSI controller engineering documents. --Chuck

7 years, 7 months

2
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DTC TakeTen media?

by cclist＠sydex.com

An interesting take on the removable media of the time, circa 188: https://ia601603.us.archive.org/30/items/PC-Mag-1988-09-13/PC-Mag-1988-09-1… Starts on PDF page 213. I don't think that DTC ever made a hard drive, but they did package external drives under the TeamMate product line. --Chuck

7 years, 7 months

1
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DTC TakeTen media?

by cclist＠sydex.com

On the subject of oddball PC media, does anyone out there have media for the DTC "Take Ten" cartridge drive? I've got the drive here, still in original shrink-wrap and packaging, but no media, so I don't have the faintest idea if it still works. As the 5.25" cartridges only held 10MB, I suspect this was a flash-in-the-pan venture. I'd never heard of one back in the day when everyone was using Bernoulli drives. --Chuck

7 years, 7 months

3
3
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Using M122 keyboards on a PC

by sales＠elecplus.com

Orihalcon sells nifty Soarers converter cables that let you use most terminal keyboards on a PC. But please be aware that ONLY the keys found on a normal PC keyboard will work! You can do some remapping, but F13-F24 will not be available, and some keys will not operate the same as they did on the original keyboard. I have used these to test Wyse (with removable cables), IBM, and a bunch of AT and XT keyboards. They do not work for ADDS keyboards. Cindy Croxton Electronics Plus 1613 Water Street Kerrville, TX 78028 830-370-3239 cell sales at elecplus.com --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

7 years, 7 months

3
2
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Scans of VT05, RK05 and PC04 IPB, TC11 Formatter doc and DC013 chip doc

by mattislind＠gmail.com

I scanned some more documents: The version of the TC11 formatter manual online is not matching the binary that is available. This one is a later version which is a better match. http://storage.datormuseum.se/u/96935524/Datormusuem/DEC/DEC-11-YPTC-D_TC11… I found three IPBs. I couldn't find them directly on bisavers: http://storage.datormuseum.se/u/96935524/Datormusuem/DEC/DEC-PC04-IPB-1.pdf http://storage.datormuseum.se/u/96935524/Datormusuem/DEC/DEC-VT05-IPB-1.pdf http://storage.datormuseum.se/u/96935524/Datormusuem/DEC/DEC-RK05-IPB-1.pdf Finally I found a copy from a book that is about the DC013 chip - not the best copy unfortunately. But I haven't found anything like this online. http://storage.datormuseum.se/u/96935524/Datormusuem/DEC/DC013.pdf /Mattis

7 years, 7 months

2
1
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Prototype IBM DemiDiskette drive

by schlae＠gmail.com

Yesterday I dug out my prototype IBM DemiDiskette drive and took some photos: https://twitter.com/TubeTimeUS/status/1032066215647166464. It caused a bit of interest on Twitter so I figured some of you here may also like seeing it. I don't really know a whole lot about it other than what my grandfather told me (he worked on the team that developed it). Dates on the remaining paperwork go from December 1979 through August 1980. It was supposed to be a very low cost drive for the microcomputer market (target price IIRC was <$100). Although it was originally developed by a team working at IBM Austin, it was handed off to a different team apparently working out of Rochester. The disk capacity was not very large--I don't remember the exact number but it was probably around 100K or less. A few interesting observations: * The stepper motor uses a spiral cam to convert rotation into linear motion to drive the head. * It is a single-sided drive. * A microswitch senses the presence of the disk instead of an optical pair. * There is no write protect notch or sensor. * There is no index sensor. * The spindle drive motor is a DC brushed motor with an encoder wheel for speed control. * Not shown in the pics, but the plastic "spot welds" holding the vinyl jackets on the disks are intentionally widely spaced making the cookie easier to remove for analysis. It's not really something you get to see every day, that's for sure... --Eric

7 years, 7 months

8
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RK05 spindle pulleys - trade 50Hz vs 60Hz?

by gerardcjat＠free.fr

Why don't you simply power it through an inverter that will output 60 Hz, eventually even "down to" 120 V , true sine wave, of course ??? They are not that expensive by now. And be carefull : motor designed for 60 Hz, running "under" 50 Hz, OR THE OPPOSITE, I do not recall !!!, display a significant reduced life time. I have to check which is which, but I know this is a question of saturated magnetic field. Better check first.

7 years, 7 months

16
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DEC compatible Unibus MOS

by useddec＠gmail.com

More sorting, more boards..... 3) DATARAM 40818 (ONE IS ? POPULATED) 2) EMC CORP 240-010-900 512KB EMC CORP 240-012-900 4MB MOSTEK MK8044 ASM 6805 MOTOROLA MM19 ? POPULATED 1 BROKEN CHIP NATIONAL SEMI 551109202 PLESSEY 701295 128KB HAS BROKEN CHIPS STANDARD MEM MM-144 TRENDATA STANDARD MEM MM-135 2) TRENDATA STANDARD MEM MM-140

7 years, 7 months

1
0
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IBM Model M keyboard for 3192

by chd＠chdickman.com

I got a box of miscellaneous model M keyboards last week. One of them has 122 keys and the connector is the size of a PC/AT type circular DIN connector, but the 5 pins are spread over 240deg instead of the AT's 180deg. The part no. is 1390702 and a little research found it is >from an IBM 3192 terminal. Is it electrically/protocol compatible with the PC/AT and PS/2 keyboard or a different animal completely? -chuck

7 years, 7 months

4
3
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BBS for RSTS

by john＠yoyodyne-propulsion.net

I'm sure it's been years since I've darkened anyone's door around here. I still have this idea that someone should write a proper BBS system (and run it) for RSTS... ...the age old problem is getting data in and out of it to connect it to the world... or one of the problems anyhow. Maybe using a telnet connection to a terminal device and some sort of homebrew message queueing system to an outside helper. Hmmm.

7 years, 7 months

3
2
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Tape end retainers--followup

by cclist＠sydex.com

I finally got my package of cling vinyl today and discovered that it is indeed the stuff the vinyl open-reel tape retention strips were made of in the days of yore. The stuff is Grafix-brand "Cling Vinyl", KFC9-ASST. 9 9"x12" paper-backed sheets. Easy enough to cut with scissors or standard paper cutter. 6" long x 3/8" wide seems to be about right. No more foam blocks! --Chuck

7 years, 7 months

1
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ISO Dura 1021 or 1041 terminal docs

by aek＠bitsavers.org

some local folks have picked up a few of these, so I thought I'd ask if anyone has any documentation beyond what I put up on bitsavers yesterday they are modified Selectric mechanisms with serial I/O and paper tape reader/punches

7 years, 7 months

3
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DEC compatible memory and Integrated Solutions boards + Apollo

by useddec＠gmail.com

I found another group of quad size memory and a few other items. Please contact me off list if you are interested. Shipping is from 61853. Camintonn CDV-4000 Chrislin CI-MIV8 CLEARPOINT DD072 16MB CLEARPOINT DD080 16MB CLEARPOINT DD082 32MB CLEARPOINT DD090 16MB National Semi NS23-R DATARAM 63016 MS650-BA compatable DATARAM 40919 MS630 Also Integrated Solutions M68000 board and three IS68XM memory 101103 Apollo 0121173-001 with daughter board

7 years, 7 months

3
6
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How to tell if a Displaywriter 6360 floppy has double-sided drives in it.

by aek＠bitsavers.org

I don't know if this is always true, but it appears that the way you can tell is if there is a "T" on the lower right of the 6580 badge on the front. I didn't see this in the documentation anywhere. The controller inside is significantly different (3 boards instead of one). +--------+ | IBM | | | | 6360 | | T| +--------+ There are a couple up on eBay right now from seller 'potomacestore' Double-sided 6360s seem to be much less common than single-sided.

7 years, 7 months

2
2
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Litton Monroe OC-8820

by francesco.nidito＠gmail.com

Hi All ? I recently bought a Litton Monroe OC-8820 but, unfortunately, there were neither software nor manual with the machine. Does anybody in this list have software and / or manuals for the OC-8820? Many thanks in advance, Francesco

7 years, 7 months

1
0
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VCFMW 13: Less Than a Month to Go!

by silent700＠gmail.com

Hello classic computing fans! We're entering the final weeks before the big event, and here is an update. If you're subscribed to the mailing list, you've already seen most of this (for review/sharing: https://mailchi.mp/e060dcbd1bfd/vcf-midwest-13-one-month-to-go). - Exhibits: Our exhibitor list has been posted, showing most (but not all!) of the displays you'll see this year. We're happy to once again have a great variety of platforms and eras represented, as well as some new faces alongside our veteran exhibitors. Check it out at: http://vcfmw.org/ex.html - Table space: We are full! Until, that is, we're not. All of the past shows have included several last-minute changes, so space does open up. There is a stand-by list forming; please email me directly if you'd like to be on it. - Presentations: Once again this year we have a full weekend of interesting talks and demos. The schedule (as it stands now) has been posted. All talks are filmed and will be posted online - but they're always much better in person! http://vcfmw.org/pres.html - Hotel: Due to other parties pre-booking a large block of rooms, Friday night (14th) at the Holiday Inn is sold out. If you have not yet reserved a room, please check back with the hotel after 8/27, as any remaining unbooked rooms will be added back to our block on that date. Our block still has rooms for Thursday, Saturday and Sunday nights. - Donations: VCFMW is a community-supported exhibition, free and open to all. Most of our funding comes from either cash donations (online or at the show) or donations of equipment for our community auction. Please consider one or both methods of support. Auction items can be given to VCFMW staff before Saturday afternoon. Purchasing items at the auction also helps - and it's always an event not to be missed! - Free pile: The tradition of the Free Pile continues this year. This is a great way to unload that "junk" (but not too junky) hardware and software and contribute to the classic computing community. Our only request is that you make sure that whatever you leave is gone by 4pm Sunday. We thank you once again for your interest in and support of VCF Midwest and the whole classic computing hobby. We'll see you in a month! -j

7 years, 7 months

1
0
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I have too many Wyse keyboards!

by sales＠elecplus.com

https://www.elecshopper.com/input-devices/keyboards.html?manufacturer=52 20% off all Wyse keyboards priced more than $25 if you buy 25 or more. Use code WYSE20OFF at checkout. Offer ends 27 Aug 2018. Cindy Croxton Electronics Plus 1613 Water Street Kerrville, TX 78028 830-370-3239 cell sales at elecplus.com --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

7 years, 7 months

1
0
0 0

QED 933 (11/93 clone) and mystery SCSI board

by jnc＠mercury.lcs.mit.edu

> From: Glen Slick > A few people bought QED-993 boards from eBay in the last few years. > ... They are set up to use the standard 11/93 console panel, although > only 4 async ports are implemented, not 8. Is there any documentation anywhere? Bitsavers had only a thing on the QED-95. Noel

7 years, 7 months

2
1
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Australian Computer Museum - HELP

by jnc＠mercury.lcs.mit.edu

> From: Pontus Pihlgren > I hope you can get the help you need. What ever happened about this? I figure the bulldozers must have arrived by now? Noel

7 years, 8 months

3
2
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Australian Computer Museum - HELP

by markarmbrennan＠gmail.com

Hi Noel, I spoke to John last week most things were saved, I am going to try to help them with some archiving of some of the items that were in storage later in the year. But the good news is most things were saved in time. Mark

7 years, 8 months

1
0
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HP scope mailing list

by chd＠chdickman.com

Is there an HP scope and instrument mailing list? I have an HP 181A storage scope that I would like to get working again. -chuck

7 years, 8 months

5
5
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New Listings from Sellam's Collection [re-send]

by sellam.ismail＠gmail.com

> > Good evening, everybody. Time for a new batch of stuff! New items for August 18, 2018: Heathkit H88 Heahtkit H88 Heathkit EUW-20A Servo-Recorder Atari 410 Program Recorder Atari 825 80 Column Printer Atari CX85 Commodore MPS-803 Printer Commodore 1870 Modem/1200 (boxed) Cardco Inc. card? Centronics Parallel Printer Interface with Graphics for the VIC-20 and C-64 Computers Radio Shack TRS-80 Orchestra-90 Stereo Music Synthesizer Radio Shack TRS-80 Modem I Radio Shack TRS-80 Line Printer II IBM PCjr TI Speech Synthesizer Timex-Sinclair 1016 (boxed) Xerox 860 Keyboard Iomega A210H Bernoulli Box 10+10 Exidy Dual Disk DEC BA353-AA StorageWorks DEC TK50Z-FA DEC TX50Z-GA Tektronix 4051E01 ROM Expander Tektronix 4051 Binary Program Loader Tektronix PLOT 50 System Software Tape Tektronix PLOT 50 System Software Tape Tektronix PLOT 50 System Software Tape Tektronix PLOT 50 System Software Backup Tape Tektronix PLOT 50 System Software Backup Tape Tektronix PLOT 50 Statistics Vol. 2 Tape 1 Tektronix 4051R01 Matrix Functions Instructional Manual Communications Logic LSMC1 Modem Racal-Milgo COM-LINK 7S modem Dialectron S.A.M. Smart Answering Machine Atari STM1 mouse Information Machines MA100 Professional Modem Adapter As always, an index of links to the specific items above is in the New Arrivals Niche: https://docs.google.com/spreadsheets...72371&range=A1 <https://docs.google.com/spreadsheets/d/1I53wxarLHlNmlPVf_HJ5oMKuab4zrApI_hi…> Remember: you can always make an offer! I'm still catching up after the VCF so if you e-mailed me about something a couple weeks ago please know I will be getting back to you in the next couple days. Thanks! Sellam

7 years, 8 months

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Centronics 101A manuals?

by pbirkel＠gmail.com

Speaking of BIG printers, does anyone have the maintenance manual for the Centronics 101A impact printer? All that I've found thus far is marketing literature. Not even an owner's manual. -----Original Message----- From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Mattis Lind via cctalk Sent: Sunday, August 12, 2018 5:08 AM To: General Discussion: On-Topic and Off-Topic Posts Subject: Oliverti Te300 teleprinter manuals? Does anyone have any type of manuals for the Olivetti Te300 teleprinters? Preferebly maintenance manuals or similar. https://vads.ac.uk/diad/bres/pub/COID/231/32.jpg

7 years, 8 months

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Fairly Extensive Singer/Friden "System Ten" Computer System for Rescue

by rickb＠bensene.com

Through my Old Calculator Museum website, I have been contacted by a gentleman that has a fairly substantial Singer/Friden System 10 that is located in a building that the business wants to clear out. The computer system is slated to end up in a dumpster if it isn't rescued. The place the machine was stored is indoors, in an office-like space in a larger warehouse style building. The space was not temperature controlled, but there are no signs of water damage or serious corrosion. Some critters (probably mice) have been inside the cabinets of the system, but the contact said that there were no obvious signs that they chewed anything up. The system is very dusty (it was not covered), and it appears that some panels on the cabinets may have been removed, but are probably with the system. Some stuff appears to be partly disassembled. There also might be some spare parts, e.g., circuit boards. The system consists of a CPU, probably a Model 20, two Model 80 Display Terminals, a line printer of some sort, and two Mode 40 disk-pack (aka dishwasher-sized) disk drives. There are quite a few Model 41 disk packs there.. There also appears to be some documentation. There may also be some kind of magtape drive with the system, as there is a rack full of 7 or 9-track tapes hanging in it. Not sure if these are included with the system, though. Here is a link to some photos of the system: http://pail.bensene.com/Singer10 Beware that the web host does not have much upstream bandwidth, and the photos are pretty high resolution, so downloading them may take some time. Most of the photos are between 1.8 and 2.5 megabytes in size. there is some documentation on the Singer System Ten up on Bitsavers at http://bitsavers.org/pdf/singer/systemTen . Some of the documentation there is for the equipment that is available. These systems aren't very common, and there likely aren't all that many of them left in existence. Singer sold a lot of these systems into retail outlets as part of one of the first online Point-of-Sale systems. One notable account was Sears and Roebuck, who installed a huge networked (via Modem) environment using System Ten machines in stores to run Point-of-Sale systems, with modem links to larger systems that collected the information, and usually fed it to even larger systems (e.g., IBM mainframe) for inventory management, bookkeeping, and other large corporate-level reporting/management systems. However, the system aged quickly, as other competitors came onto the Point-of-Sale scene very quickly, with systems that were less expensive, more reliable, and more easily maintained. Many of the Singer systems in large retailers were replaced within a few years of being put into service. There was little market for "used" systems, so most all of them taken out of service went for scrap. The System 10 CPU was pretty unique in that it had "hardware"-based timesharing. The system managed time-slicing between "partitions" in main memory (magnetic core) with hardware that provided a fixed timeslice to each partition, switching to the next either when the time-slice ran out, or certain instructions (e.g., I/O) were executed that would trigger an immediate context switch. The system had hardware protection for the partitions to isolate the partitions from each other, allowing them to run independently. There was a shared and a read-only system partition which could facilitate inter-partition communications and management functions. Pretty cool for a design done in the late '60's. It'd be a real shame for this system to end up in the trash, which is exactly where it will go if a home can't be found for it relatively soon (e.g., next couple of weeks). The system is located in West Chicago, IL. It's all pretty sizable, so, you'd probably need a small commercial-style moving van with a lift-gate (the stuff is likely quite heavy, especially the disk drives) to haul it. You would also probably need a heavy-duty hand-truck or two, and some strong straps. You'd need some muscle, too. I suspect it'd be more than a 1-man job. My contact wants it out of there. You just have to come get it and haul it away. If you have any serious interest in rescuing this system, drop me an Email, and I'll put you in touch with my contact. Hopefully someone out there can give this machine a new home. Email: rickb .at. bensene .dot. com Rick Bensene The Old Calculator Museum http://oldcalculatormuseum.com

7 years, 8 months

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QED 933 (11/93 clone) and mystery SCSI board

by useddec＠gmail.com

I just found a QED 933. I've had Memtec boards before, but I don't remember anything about this one. The other board is a SI-QS 1000 6050-6005-B (Systems Industry?) quad height . Does anyone have any info or interest in these? Thanks, Paul

7 years, 8 months

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Interesting blog post on Zuse

by lproven＠gmail.com

Konrad Zuse, Alan Turing, and the World?s First Computer Startup POSTED ON OCTOBER 18, 2013 ? POSTED IN STARTUPS <http://www.nathanzeldes.com/blog/category/startups/> http://www.nathanzeldes.com/blog/2013/10/konrad-zuse-alan-turing-worlds-fir… -- Sent from my smartphone. Please pardon brevity & typos.

7 years, 8 months

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VCFMW drop offs, pick ups, visits

by useddec＠gmail.com

I'm looking forward to seeing everyone going to VCFMW. I'm going to try to go up Friday and leave late Saturday. It's always great when people swing by the house, but try to give me some warning, especially with me going up Friday. I hope to have a path dug into my last 25 foot storage unit and retrieve a ton of micro-Vax II parts along with a ton of other items. I still have a few 3000 alphas, about 10 3100s, a few 4000s, 5000s, 6 or so BA11-N (11/03L/23) boxes, BA23s, LA120s, and 1000's of other parts. Also some REMEX interfaces and a bunch of paper tape readers and maybe punches I'm getting tired of looking at. Please contact me off list if you have any requests or questions. Feel free to send me wish lists. Thanks, Paul

7 years, 8 months

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Vaxstation 2000, parts, more

by useddec＠gmail.com

I have a Vaxstation 2000 with the BA40-A expansion box , cable and hard drive. I have four more unit That I couldn't get close enough to tell if they are 2000s or expansion boxes. If anyone is interest in any, I will pull them out and can supply a configuration. I also have two MS400-BA 4mb cards, a VS40-X 54-166-88 4 plane graphics cards and two VS40-X 54-17282-01 8 plane cards. Last is a 54-19783-01 VT1000 board. If you have any interest or questions please contact me off list. Thanks, Paul

7 years, 8 months

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VCF Midwest seller's experience?

by marvin＠west.net

This will make my third year selling at VCFMW. My motives are to pay for the trip :), Diminish the "collection", and have fun talking/meeting with other attendees. All three have been easily accomplished! For me, I don't relish the use of a consignment area and spend most of my time in the selling area. I try not to buy much as I am really trying to downsize the collection. I do find it better to try and have buyers waiting for anything large or heavy. I'm not sure, but I suspect enough people might be interested that it could be a 24 hour event, Fri night - Sun afternoon :). See you there! Marvin > From: John Foust <jfoust at threedee.com> > > I'm thinking of reducing my collection by bringing items to VCF Midwest. > I attended once six or seven years ago. > > Of course a great deal depends on what I'm selling, so I'll build a list. > > Possibles include Micro PDP-11, Microvax II, Vaxstations, Kaypro 1, > CBM, Amiga, Atari, Apple, some S-100 boards. > > Is there anyone here who sold at a previous VCF Midwest? How did it go? > > If there's only 150 attendees, is selling more like exhibiting? > Ideally I'd like to come home with an empty van. > > - John

7 years, 8 months

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IBM Displaywriter Logic for sale

by sales＠elecplus.com

https://mashup.equallogicstorage.net/ibm/ibm-display-writer-system-untested- for-parts-repair/ Not affiliated with seller, etc. Cindy Croxton --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

7 years, 8 months

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VCF Midwest seller's experience?

by jfoust＠threedee.com

I'm thinking of reducing my collection by bringing items to VCF Midwest. I attended once six or seven years ago. Of course a great deal depends on what I'm selling, so I'll build a list. Possibles include Micro PDP-11, Microvax II, Vaxstations, Kaypro 1, CBM, Amiga, Atari, Apple, some S-100 boards. Is there anyone here who sold at a previous VCF Midwest? How did it go? If there's only 150 attendees, is selling more like exhibiting? Ideally I'd like to come home with an empty van. - John

7 years, 8 months

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SPARCstation Voyager - Any history?

by michael.99.thompson＠gmail.com

> > From: Steve Algernon <salgernon at me.com> > Subject: SPARCstation Voyager - Any history? > > Cleaning up a non-post?ing SPARCStation voyager 146 (are there others?) > and found a crude cat drawing on the silkscreen: > > https://twitter.com/salgernon/status/1029474524100616192?s=21 > > Just curious if anyone knows any backstory for this kitty. (I was at sunw > from ?90 to ?92 and this machine is a little after my time!) > > ?sma > The Sun 386i, Roadrunner, had the roadrunner and the developers names molded into the case. There are pictures of some of the developers here: https://sites.google.com/site/mthompsonorg/Home/sun-microsystems/sun-386i-d… -- Michael Thompson

7 years, 8 months

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vintage printers in Colo Springs

by billdegnan＠gmail.com

If anyone is interested in a Wang Daisy Wheel Printer, Diablo same, Star SG-10, TRS 80- DWP 510 and a few other things like that let me know and I will pass your info along to a guy who contacted me through my web site. I do not know the guy. I am not interested in these. This person implied that is not giving them away, He may just want a token payment or he may be Ebay savvy. Or somewhere in between.... Please don't reply here, send your contact info, securely, here: https://www.vintagecomputer.net/contact.cfm (I don't track or store contact form submittals from my web site.) Bill

7 years, 8 months

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SPARCstation Voyager - Any history?

by salgernon＠me.com

Cleaning up a non-post?ing SPARCStation voyager 146 (are there others?) and found a crude cat drawing on the silkscreen: https://twitter.com/salgernon/status/1029474524100616192?s=21 Just curious if anyone knows any backstory for this kitty. (I was at sunw from ?90 to ?92 and this machine is a little after my time!) ?sma

7 years, 8 months

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MicroVAX I

by robertbeauchamp33＠yahoo.com

My mother is moving and her spouse has a MicroVax I he bought new back in 1984 for some crazy amount. I don?t see this model listed in your chart? Can you tell me if there is any value to this machine? He also has two original monitors. Sent from my iPhone

7 years, 8 months

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Tandy parts

by useddec＠gmail.com

I have a Tandy 1700355 rev c p/n 870-9782 motherboard and a 1700496-B p/n 87091127 card. If interested, please contact me off list. Thanks, Paul

7 years, 8 months

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Single-height Qbus grant continuity PCB

by jnc＠mercury.lcs.mit.edu

> From: Tony Duell > I have here a little square board (the same size as the older Unibus > grant continuity card) with just 2 pairs of pins linked. ... Has anyone > come across that one before? No, that's a new one on me. I have seen off-brand single-height QBUS grant jumpers, but full length (no knuckle-busting); I have a number from MDB Systems. Noel

7 years, 8 months

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Single-height Qbus grant continuity PCB

by ard.p850ug1＠gmail.com

All the PDP11 people here will know the little square grant continuity board used in Unibus machines, along with the later dual-height one that also connected the NPG signal. And the common Qbus grant continuity board that was also a full dual-height one that had a couple of pairs of pins linked on one of the connectors. But I have here a little square board (the same size as the older Unibus grant continuity card) with just 2 pairs of pins linked. In the etch is a Digital logo (so I assume it's a real DEC product) and : LSI11 Grant Continuity G7272 5012564B Side 2 Has anyone come across that one before? -tony

7 years, 8 months

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General Electric Terminet 30 manuals?

by mattislind＠gmail.com

Continuing this thread with requests for heavy printers and the like. Is there anyone that has manuals for the GE Terminet 30? https://i.imgur.com/8Q0Mf2d.jpg /Mattis

7 years, 8 months

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Northern Telecon ICs

by jon＠jonworld.com

All, A buddy on twitter is trying to find out info on the following NT ICs. Info here: "Northern Telecom QMV271BY1 / NTOOR66C3A : Unknown device. Ceramic Pin Grid Array package with gold cap. Manufactured Week 33 of 1990. No further information known." https://twitter.com/Neko_Ed/status/1029034885573500929 Any ideas to help him? -- -Jon +44 7792 149029

7 years, 8 months

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FPUIB: Books available free or postage

by cisin＠xenosoft.com

I will not do extensive/conscientious shopping for boxes/shipping rates. So, they may go Priority or Media mail, and not extremely quickly. I'll expect prompt reimbursement of postage (rounded up). Anybody want any of: Simpson, Alan dBase III Plus Programmer's Reference Guide Sybex 1987 0-89588-382-1 Very Good Business Computer Systems : An Introduction Kroenke, David Mitchell 1987 0-394-39055-5 Very Good Promotional copy, marked as such C : How To Program : 4th Edition Deitel Prentice hall 2004 0-13-142644-3 Good, racked, Cisin on edge Fuzzy Logic : For business And Industry Earl Cox Charles river 1995 1-886801-01-0 poor remaindered? missing front cover Lotus User's Guide : Lotus 1-2-3 For DOS Release 2.4 Lotus 1993 C Primer Plus Waite/Prata/Martin Sams 1984 0-672-22090-3 VG Adobe Photoshop 5.0 User Guide Adobe 1998 G damaged back cover ObjectVision Reference Guide Borland 1991 vg Advanced dBase III Plus Programming And Techniques Miriam Liskin osborene/McGraw0-07-881249-6 VG Adobe Photoshop 5.5 User Guid Supplement Adobe 1999 G Microsoft Windows Programmer's Reference "New For Version 3 Microsoft 1990 1-55615-309-0 G Systems Programming In Turbo C Michael Young Sybex 1988 0-89588-467-4 G Java in A Nutshell 2nd Edition Flanagan O'Reilly 1997 1-56592-262-X G Systems Programming Tuning Loukides O'Reilly 1990 0-937175-60-9 G Discrete Mathematics : Schaum's Outlines Lipson McGraw Hill new Xerox Ventura Publisher training Guide Xerox 1988 G Palm Pilot : The Connected Organizer : Handbook professional Edition, Quick Start, Applications & Solutions 3Com/Palm 1997 vg OB_Disclaimer: these did not sell at VCF (Box A10)

7 years, 8 months

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Help ID'ing Bridge Rectifier

by derschjo＠gmail.com

Hey all -- Working on bringing a Dasher D200 terminal back to life. There's a bridge rectifier package that appears to have a short in it and I can't find any info on it -- I suspect it may have a house part number. It's got a Motorola logo on it, and is labeled "SDA314." In the schematic ( http://bitsavers.org/pdf/dg/terminals/014-000640_DASHER_D100_D200_Display_T…) it's CR6. This short causes the 5W resistors before the fuse to smoke and explode, but the fuse is fine (thank goodness.) :). Anyone have any ideas? Thanks, Josh

7 years, 8 months

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