Re: IBM Type 31 Alphabetical Duplicating Keypunch available, Seattle area
On Tue, Feb 11, 2020 at 9:44 AM Al Kossow via cctalk wrote: > > > On 2/11/20 8:28 AM, Rick Bensene via cctalk wrote: > > It has a label on it that says "BR 2412". > > Bunker-Ramo, originally Nuclear Data NDP-812 > Yep. 12-bit machine, four accumulators, multiply/divide logic standard. All built on a single large, wire-wrapped board stuffed with 9000-series logic, using extremely poor quality wire-wrapped sockets. The one in that picture almost works properly after a week or three of cleaning and debugging (the mul/div hardware screws up somewhere and I never tracked it down). Bigger issue is that my unit doesn't have any I/O devices at all, so I'll have to build one. The BR 2412 is basically identical to the ND-812, except the latter used core memory and the former uses battery-backed SRAM. (Big lead-acid battery in there.) > > Hang in there, man. > > Seconded. - Josh
Re: cctech Digest, Vol 65, Issue 3
On 02/11/20 18:00, cctech-requ...@classiccmp.org wrote: Send cctech mailing list submissions to cct...@classiccmp.org To subscribe or unsubscribe via the World Wide Web, visit http://www.classiccmp.org/mailman/listinfo/cctech or, via email, send a message with subject or body 'help' to cctech-requ...@classiccmp.org You can reach the person managing the list at cctech-ow...@classiccmp.org When replying, please edit your Subject line so it is more specific than "Re: Contents of cctech digest..." Today's Topics: 1. looking for: fairchild model 8200 manual (Adrian Stoness) 2. Opening a MicroVAX 2000 (Antonio Carlini) 3. RD53 failure modes (Carlos E Murillo-Sanchez) 4. PC3XC manual? (Paul Koning) 5. Re: Old IBM magnetic media (cct...@emailtoilet.com) 6. Looking for info - Computer Extension systems WE-VM8E8 board (Bob Smith) 7. Re: RD53 failure modes (Fred Cisin) 8. IBM Type 31 Alphabetical Duplicating Keypunch available, Seattle area (Josh Dersch) 9. Re: IBM Type 31 Alphabetical Duplicating Keypunch available, Seattle area (William Donzelli) 10. Re: IBM Type 31 Alphabetical Duplicating Keypunch available, Seattle area (Tony Aiuto) 11. Re: IBM Type 31 Alphabetical Duplicating Keypunch available, Seattle area (Lyle Bickley) 12. Making use of Panda dist TOPS20 (David Griffith) 13. Re: Making use of Panda dist TOPS20 (Ethan Dicks) 14. Re: Opening a MicroVAX 2000 (Josh Dersch) -- Message: 1 Date: Sat, 8 Feb 2020 18:50:25 -0600 From: Adrian Stoness To: "General Discussion: On-Topic and Off-Topic Posts" Subject: looking for: fairchild model 8200 manual Message-ID: Content-Type: text/plain; charset="UTF-8" trying to find a manual for a fairchild universal counter timer model 8200 circa 1968? got one i found like to see if i can get it working for the rack. can only find this sales catilog from 68 https://l.facebook.com/l.php?u=https%3A%2F%2Farchive.org%2Fdetails%2FTNM_Instruments_catalog_multimeters_and_various_o_20171025_0048%2Fpage%2Fn11%2Fmode%2F2up%2Fsearch%2Ffairchild%2Bmodel%2B8200%3Fq%3Dfairchild%2520model%25208200=AT2SbCVHC4Bf1LBj-UBDAeFgyB_79Ov-tSEHfbJYlfJ3BBA0SrVHyqlY85S9NLZq2AzAf9K0D9OweDdNRockMT0TxmKJYL5HHV8odxS6lp9Tek0jo0PhWZA7Lb6i9Oaf4-0 https://l.facebook.com/l.php?u=https%3A%2F%2Fdrive.google.com%2Fopen%3Fid%3D1IZDamqqNJP8a8ilZWALSNg_na2hZqKr3%26fbclid%3DIwAR3LJf3o-4y_xSALVXNzHBaFeBRBP_oDjr_CviGm0TZxUTR14aKtXwPH1y8=AT2SbCVHC4Bf1LBj-UBDAeFgyB_79Ov-tSEHfbJYlfJ3BBA0SrVHyqlY85S9NLZq2AzAf9K0D9OweDdNRockMT0TxmKJYL5HHV8odxS6lp9Tek0jo0PhWZA7Lb6i9Oaf4-0 https://l.facebook.com/l.php?u=https%3A%2F%2Fdrive.google.com%2Fopen%3Fid%3D1aAnHIUHDdc_YjqkWy5z8rc_WsUQ0p0KN%26fbclid%3DIwAR2XLjHzEujXBgJS0-iAt2yJXBbDhCv9LjVPsyJpk423nsDjLxIQL4g-Kz8=AT2SbCVHC4Bf1LBj-UBDAeFgyB_79Ov-tSEHfbJYlfJ3BBA0SrVHyqlY85S9NLZq2AzAf9K0D9OweDdNRockMT0TxmKJYL5HHV8odxS6lp9Tek0jo0PhWZA7Lb6i9Oaf4-0 hasnt been powered up since prolly 1986 has a tag on it about channel B not working. was found in a rack sitting out in 40below temps prolly been sitting there for 20-30yrs in a storage shed the guts are realy clean on it so proly has potential to get working again. -- Message: 2 Date: Mon, 10 Feb 2020 11:17:03 + From: Antonio Carlini To: "General Discussion: On-Topic Posts" Subject: Opening a MicroVAX 2000 Message-ID:<7d2cf42b-03c1-b514-d8aa-b85c0af83...@ntlworld.com> Content-Type: text/plain; charset=utf-8; format=flowed I'm trying to non-destructively open up a MicroVAX 2000. I've removed the bottom "dressing" section (which holds some of the I/O connectors)? but the next step isn't obvious. None of the manuals I have cover dismantling and the net doesn't have an IPB or similar available. Other people have managed to get inside (I can see their results) so I must be missing something obvious ... Thanks. Antonio Antonio, From memory, the 2000 case covers are really tight and may need a bit of leverage to remove, assuming all the screws have been removed. Very close fitting rfi shields + several years of light corrosion etc... Regards, Chris
Re message 5 on Tuesday the 12th of February "Old IBM magnetic media" - 2321 etc...
Sir, I have a great interest in collecting vintage media. I am also desperate to get hold of 2321 artifacts. Please talk to me as soon as you can. Many thanks, Peter VP
Re: RD53 failure modes
Hello, definitely you should be able to fix it. This kind of problem is caused by the missing thickness of the rubber stoppers of the positioner, which became goo in the years. You have two ways to solve this problem. First of all, remove the disk top cover plate in clean room, locate the positioner and note that is full of black goo. Remove it at best with isopropyl alcohol, sticks, paper, whatever, but be SURE not to spurt / touch on the disk surface. After this: - method 1, easier: locate two screws at the sides of the positioner coil which hold on position left and right stoppers. You should loosen the left one (head on the center of the disk) and move just slightly to the right, then tight the screw again. As you must repeat some times to find the right position, my advice is to have a PSU connected to the disk, and try before really tightening the screw if it is enough / too much / good. In this way you compensate for the thickness of the missing rubber stopper, but the head will receive some more shocks at start and during operations. -method 2: you will replace the missing rubber with a new one. You should find a piece of rubber sheet, thickness around 1mm. You cut a small chunk and somehow glue it to the stoppers again. Of course you need to clean it very well before, otherwise glue will not adhere. Let me know if you manage to fix it. Andrea
Re: IBM Type 31 Alphabetical Duplicating Keypunch available, Seattle area
On 2/11/20 8:26 AM, Rick Bensene via cctalk wrote: > In the background of one of the photos (#1, IIRC) is the front panel > of what appears to be a 12-bit computer (ala PDP 8), but the panel is > most decidedly not DEC. It has a label on it that says "BR 2412". > It appears that there is a second one of these located directly below > this panel. These are in a rack that appears to have a PDP 8/e > mounted above them. The question is...what is this "BR 2412" > machine? I'll take the liberty of answering the question being asked. Please forgive the intrusion. BR 2412 = Bunker-Ramo 2412. --Chuck
Re: IBM Type 31 Alphabetical Duplicating Keypunch available, Seattle area
On 2/11/20 8:28 AM, Rick Bensene via cctalk wrote: > It has a label on it that says "BR 2412". Bunker-Ramo, originally Nuclear Data NDP-812 Hang in there, man.
RE: IBM Type 31 Alphabetical Duplicating Keypunch available, Seattle area
Sorrythis was meant to go to just Josh, but accidentally copied to the list. My apologies. Rick Bensene The Old Calculator Museum http://oldcalculatormuseum.com -Original Message- From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Rick Bensene via cctalk Sent: Tuesday, February 11, 2020 8:26 AM To: Josh Dersch; General Discussion: On-Topic and Off-Topic Posts Subject: RE: IBM Type 31 Alphabetical Duplicating Keypunch available, Seattle area Hi, Josh, I can't possibly think about getting this wonderful old beast from you, but something about the photos captured my curiosity. In the background of one of the photos (#1, IIRC) is the front panel of what appears to be a 12-bit computer (ala PDP 8), but the panel is most decidedly not DEC. It has a label on it that says "BR 2412".It appears that there is a second one of these located directly below this panel. These are in a rack that appears to have a PDP 8/e mounted above them. The question is...what is this "BR 2412" machine? I have managed to get TSS-8 running on two terminals on my 8/e. I configured a third serial card for current loop and 110 baud to try to get my Teletype running on it as a third terminal, but I can't get any response out of it. I did reconfigure TSS-8 for the third terminal. I think that the problem might be the serial board not generating interrupts, and I was just getting going on troubleshooting using my trusty Tektronix 2465 scope, when the scope died. Something went amiss in the horizontal deflection such that the trace is pushed off the left-hand side of the tube. Beam Finder does put the trace in the center of the screen, albeit all squished. I opened the scope up and checked all the connectors and switches, and all else I could think of, but nothing made any difference. Arrggh. So, then I went to get my old backup, a 465, which last I used, worked. But, something is not right with its high voltage supply...the trace slowly fades away over the course of about 5 minutes. Turn it off and let it cool down, and the trace comes back, for a couple of minutes. So, I have no oscilloscope. I lost interest at that point, but figure I can use the logic analyzer to figure out if the interrupt is being generated without too much trouble...just need to get the motivation to fiddle with it. Complicating things is that about three weeks ago, I woke up in the morning, and as I went to get out of bed, I felt something in my lower back twinge, but didn't really pay attention to it. As I went to put my weight on my feet, my left leg collapsed, and there was a sharp pain in my lower left back. From that moment on, I've been in extreme pain in my lower back, extending to my groin, then down the front side of my left let to the knee. I called my doctor, and went in. He took XRays and the diagnosis was spinal stenosis (narrowing of the spinal cord canal) due to arthritis, as well as a bulging disc in the lumbar vertebrae. All of this is causing a bundle of nerves that serve the upper left leg to be pinched, and thus...the pain. My doctor said that in order to figure out treatment, an MRI would be needed. The insurance company denied two requests he made to get the MRI. I ended up calling the insurance company and letting them know that I was both in incredible pain, as well as pretty much made immobile by this, and without the MRI, I would not be able to be treated, which was unacceptable. The finally relented, and allowed the MRI, but this whole escapade took about a week. Then, getting scheduled for the MRI took another five days, and another three days to get the MRI reviewed by a spinal specialist. I was then referred to the spinal specialist, and it took four days to get that on the schedule. I went to that appointment, and he said that there were two options, surgery or a combination of cortisone and platelet-rich plasma by injection into the affected area. I opted for the injection, as the specialist said in cases like mine that the success rate (e.g., relief of the pain) was better than 85%. Surgery will also fix it, but the recovery time is longer, and there are far more chances for complications. I go in tomorrow for the CT-guided injections. I should get relief within 3 to 7 days. Fingers are crossed it works, and there are no complications. I am still looking for a job. I had a good prospect week before last, did well in a phone screening, and asked to come in for an in-person interview. However, I was terribly sleep-deprived, as well as in terrible pain from my spine issue when I went in for the in-person interview, and though I had thought I did OK (I made no mention of my back issue/pain), apparently it wasn't good enough, even though I had tons of experience in the areas they were looking for and could prove it, they wrote me on Friday (the interview was last Thursday) saying they had picked
RE: IBM Type 31 Alphabetical Duplicating Keypunch available, Seattle area
Hi, Josh, I can't possibly think about getting this wonderful old beast from you, but something about the photos captured my curiosity. In the background of one of the photos (#1, IIRC) is the front panel of what appears to be a 12-bit computer (ala PDP 8), but the panel is most decidedly not DEC. It has a label on it that says "BR 2412".It appears that there is a second one of these located directly below this panel. These are in a rack that appears to have a PDP 8/e mounted above them. The question is...what is this "BR 2412" machine? I have managed to get TSS-8 running on two terminals on my 8/e. I configured a third serial card for current loop and 110 baud to try to get my Teletype running on it as a third terminal, but I can't get any response out of it. I did reconfigure TSS-8 for the third terminal. I think that the problem might be the serial board not generating interrupts, and I was just getting going on troubleshooting using my trusty Tektronix 2465 scope, when the scope died. Something went amiss in the horizontal deflection such that the trace is pushed off the left-hand side of the tube. Beam Finder does put the trace in the center of the screen, albeit all squished. I opened the scope up and checked all the connectors and switches, and all else I could think of, but nothing made any difference. Arrggh. So, then I went to get my old backup, a 465, which last I used, worked. But, something is not right with its high voltage supply...the trace slowly fades away over the course of about 5 minutes. Turn it off and let it cool down, and the trace comes back, for a couple of minutes. So, I have no oscilloscope. I lost interest at that point, but figure I can use the logic analyzer to figure out if the interrupt is being generated without too much trouble...just need to get the motivation to fiddle with it. Complicating things is that about three weeks ago, I woke up in the morning, and as I went to get out of bed, I felt something in my lower back twinge, but didn't really pay attention to it. As I went to put my weight on my feet, my left leg collapsed, and there was a sharp pain in my lower left back. From that moment on, I've been in extreme pain in my lower back, extending to my groin, then down the front side of my left let to the knee. I called my doctor, and went in. He took XRays and the diagnosis was spinal stenosis (narrowing of the spinal cord canal) due to arthritis, as well as a bulging disc in the lumbar vertebrae. All of this is causing a bundle of nerves that serve the upper left leg to be pinched, and thus...the pain. My doctor said that in order to figure out treatment, an MRI would be needed. The insurance company denied two requests he made to get the MRI. I ended up calling the insurance company and letting them know that I was both in incredible pain, as well as pretty much made immobile by this, and without the MRI, I would not be able to be treated, which was unacceptable. The finally relented, and allowed the MRI, but this whole escapade took about a week. Then, getting scheduled for the MRI took another five days, and another three days to get the MRI reviewed by a spinal specialist. I was then referred to the spinal specialist, and it took four days to get that on the schedule. I went to that appointment, and he said that there were two options, surgery or a combination of cortisone and platelet-rich plasma by injection into the affected area. I opted for the injection, as the specialist said in cases like mine that the success rate (e.g., relief of the pain) was better than 85%. Surgery will also fix it, but the recovery time is longer, and there are far more chances for complications. I go in tomorrow for the CT-guided injections. I should get relief within 3 to 7 days. Fingers are crossed it works, and there are no complications. I am still looking for a job. I had a good prospect week before last, did well in a phone screening, and asked to come in for an in-person interview. However, I was terribly sleep-deprived, as well as in terrible pain from my spine issue when I went in for the in-person interview, and though I had thought I did OK (I made no mention of my back issue/pain), apparently it wasn't good enough, even though I had tons of experience in the areas they were looking for and could prove it, they wrote me on Friday (the interview was last Thursday) saying they had picked someone else. Nothing else on the horizon, and finances are not good. I keep applying for jobs, but either get no response at all, or get messages saying "thanks, we'll keep your information on file...".It's frustrating. Anyway, I my curiosity got the best of me when I saw that odd front panel in the background and figured I'd drop a quick line your way. Hope things are going well for you. -Rick -Original Message- From: cctalk
Re: Making use of Panda dist TOPS20
David, you don't say which emulator you are using (specifically) for TOPS20 Panda does run very well on the KLH10 from Ken H. The set up for KLH10 emulator has details on how to set up the NI 20 address, mask etc, there is additional info on how to set up tun/tap with the virtual interface. There are a couple of sources and write ups on how to do this. There is data in the INI file, KLT20.ini will look like this: klt20.ini ; Define basic device config - one DTE, one disk, one tape devdef dte0 200 dte master devdef rh0 540 rh20 devdef rh1 544 rh20 devdef dsk0 rh0.0 rp type=rp07 format=dbd9 devdef mta0 rh1.0 tm03 type=tu45 ; Set Ethernet address devdef ni0 564 ni20 ipaddr=10.0.0.53<< this is the out of the box set up. You probably need to set up your address and a virtual gw to connect from external systems into the TOPS host. ; Define the idle device on 700 devdef idler 700 host ; Set switch register set sw=254200,,147 ; Set console lights I/O base register ;Uncomment the following line if you have a Panda display. ;lights 378 ; Load disk bootstrap directly load boot.sav ; Ready to GO --- To access the system using external system, you have to set up and enable Telnet on your linux host,. I hope this helps. bob On Tue, Feb 11, 2020 at 1:40 AM Ethan Dicks via cctalk wrote: > > On Tue, Feb 11, 2020 at 1:12 AM David Griffith via cctalk > wrote: > > I'm trying to wrap my head around getting Mark Crispin's Panda > > Distribution of TOPS20 set up such that I can actually make use of a > > TOPS20 environment. > > > > 1) How do I get networking set up, preferably such that it'll work on a > > host that's given a DHCP address that could vary? I'd like to be able to > > ssh to a specific port and then be connected to a terminal on the emulated > > machine. > > I last did it back in 2003, but I remember having to plug a real DEC > terminal into a serial port on my Linux box so I could run emacs so I > could edit some local files. Just using the xterm window wasn't > VT100/ANSI-compatible enough to run emacs without odd formatting > problems. > > I totally do not remember exactly what I did, but it was the standard > recipe for setting up TCP/IP with a static address on TOPS-20, > pointing it to the IP address of a physical interface on the box (I > might have had multiple interfaces to simplify things). > > -ethan > > > 2) How do I set or alter a regular user's disk quota? > > > > -- > > David Griffith > > d...@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?
