[cctalk] Re: IBM 1620 Model 2 software wanted

On 8/28/23 16:56, Dave Babcock via cctalk wrote: > Chuck, > > Yes, I mean Monitor II-D. > > No, CHM does not have a working 1311 drive.  The need for Monitor II-D > is for the IBM 1620 Model 2 simulators being written. Monitor I does not > run correctly on a 1620 Model 2 when index registers are

[cctalk] Re: IBM 1620 Model 2 software wanted

Chuck, Yes, I mean Monitor II-D. No, CHM does not have a working 1311 drive.  The need for Monitor II-D is for the IBM 1620 Model 2 simulators being written. Monitor I does not run correctly on a 1620 Model 2 when index registers are enabled and used by a program. Dave On 8/28/2023 3:48

[cctalk] Re: IBM 1620 Model 2 software wanted

On 8/28/23 13:54, Dave Babcock via cctalk wrote: > To all, > What they need, and CHM would be very interested in adding to its IBM > 1620 collection, is original software specifically for the IBM 1620 > Model 2.  Of particular interest are the IBM 1620 Monitor II and IBM > 1620-2 diagnostics, but

[cctalk] Re: IBM 1620 Model 2 software wanted

> Some 20 years ago, I led the Computer History Museum's restoration of an > IBM 1620 Model 1 computer. We all owe you thanks for this. mcl

Re: IBM 1620 Simulation

On 8/27/21 11:23 AM, Lee Courtney via cctalk wrote: > Video interview I made with John (Maniotes) in preparation for donation of > the 1620 program library to CHM - https://youtu.be/N12pQBiRd7A I remember that name--he was at Purdue Calumet Campus. I probably even met and talked to him 50+ years

Re: IBM 1620 Simulation

Video interview I made with John (Maniotes) in preparation for donation of the 1620 program library to CHM - https://youtu.be/N12pQBiRd7A Lee Courtney On Fri, Aug 27, 2021 at 9:50 AM Van Snyder via cctalk wrote: > On Thu, 2021-08-26 at 20:17 -0700, Al Kossow via cctalk wrote: > > > > > > On

Re: IBM 1620 Simulation

On Thu, 2021-08-26 at 20:17 -0700, Al Kossow via cctalk wrote: > > > On 8/26/21 7:43 PM, Van Snyder via cctalk wrote: > > There was a professor at Purdue who had two 20-drawer card cabinets > > full of 1620 software. I think his name was Maniotis. I think the > > Computer History Museum in

Re: IBM 1620 Simulation

On 8/26/21 7:43 PM, Van Snyder via cctalk wrote: > There was a professor at Purdue who had two 20-drawer card cabinets > full of 1620 software. I think his name was Maniotis. I think the > Computer History Museum in Mountain View has it now. Maybe it's online.

Re: IBM 1620 Simulation

On 8/26/21 7:16 PM, jim stephens via cctalk wrote: / printer / cpu setup wasn't too hard to run. > > Run assembler if you want to study for a while. Back in the day, you knew that you'd arrived when you could mentally assemble a one-liner console program and type it in without resorting to

Re: IBM 1620 Simulation

There was a professor at Purdue who had two 20-drawer card cabinets full of 1620 software. I think his name was Maniotis. I think the Computer History Museum in Mountain View has it now. Maybe it's online. On Thu, 2021-08-26 at 22:07 -0400, Ray Jewhurst via cctalk wrote: > On Thu, Aug 26, 2021 at

Re: IBM 1620 Simulation

On 8/26/2021 5:14 PM, Ray Jewhurst via cctalk wrote: Hello all, Long time lurker, extremely rare poster, I was reading the Wikipedia article on the IBM 1620 and became quite intrigued. I know that there is a simulator for it on SimH but I have never ran or simulated any card-driven machines

Re: IBM 1620 Simulation

On Thu, Aug 26, 2021 at 9:46 PM Chuck Guzis via cctalk < cctalk@classiccmp.org> wrote: > On 8/26/21 5:14 PM, Ray Jewhurst via cctalk wrote: > > Hello all, > > Long time lurker, extremely rare poster, I was reading the Wikipedia > > article on the IBM 1620 and became quite intrigued. I know that

Re: IBM 1620 Simulation

On 8/26/21 5:14 PM, Ray Jewhurst via cctalk wrote: > Hello all, > Long time lurker, extremely rare poster, I was reading the Wikipedia > article on the IBM 1620 and became quite intrigued. I know that there is a > simulator for it on SimH but I have never ran or simulated any card-driven >

Re: IBM 1620 Simulation

https://github.com/IBM-1620/Junior On Thu, Aug 26, 2021 at 5:15 PM Ray Jewhurst via cctalk < cctalk@classiccmp.org> wrote: > Hello all, > Long time lurker, extremely rare poster, I was reading the Wikipedia > article on the IBM 1620 and became quite intrigued. I know that there is a > simulator

Water Cooling and Hot Climates was RE: IBM 1620; was: Early Programming Books

> -Original Message- > From: cctalk On Behalf Of Van Snyder via > cctalk > Sent: 22 June 2021 00:00 > To: cctalk@classiccmp.org > Subject: Re: IBM 1620; was: Early Programming Books > > On Mon, 2021-06-21 at 17:26 -0400, William Donzelli via cctalk wrote: &

Re: IBM 1620; was: Early Programming Books

On Mon, 2021-06-21 at 18:55 -0500, Gavin Scott via cctalk wrote: > Oh yeah, that was like 12 years ago? I believe they had gotten the > 1620 CADET (“Can't Add, Doesn't Even Try”) running One of my colleagues, about fifty years ago, wanted to use the 1620 for telemetry processing. So he replaced

Re: IBM 1620; was: Early Programming Books

On Mon, Jun 21, 2021 at 1:43 PM Chuck Guzis via cctalk wrote: > For some (jprobably hallucinatory) reason, I thought there was a project > at CHM to replace the 1620 core stack with semiconductor memory. Guess > that never happened. Oh yeah, that was like 12 years ago? I believe they had

Re: IBM 1620; was: Early Programming Books

On 6/21/2021 4:00 PM, Van Snyder via cctalk wrote: I was once told that the most valuable guy in a Honeywell 6080 Multics shop was the plumber. No water cooling.

Re: IBM 1620; was: Early Programming Books

On Mon, 2021-06-21 at 17:26 -0400, William Donzelli via cctalk wrote: > > Of course, nowadays, the old R22 systems are being refilled with > > purified propane, called R290. Cheap, with better thermal properties > > than R22, but probably not legal when LCM picked up the 6500. > > When cleaning

Re: IBM 1620; was: Early Programming Books

> Date: Mon, 21 Jun 2021 16:02:20 -0400 > From: Paul Koning via cctalk >> On Jun 21, 2021, at 3:52 PM, Chuck Guzis wrote: >> On 6/21/21 11:53 AM, Paul Koning wrote: >>> Perhaps you were thinking about the CDC 6500 at the late lamented LCM? >>> That got some replacement stacks, which was an

Re: IBM 1620; was: Early Programming Books

> When cleaning out a 3rd party CDC dealer quite a few years back, he > remarked that the CDC machines going way back all the way to the 800s > were fantastically unpicky about how they were cooled. So I just reread what I wrote, and see it is crap. What I meant is that CDC machines going back

Re: IBM 1620; was: Early Programming Books

> Of course, nowadays, the old R22 systems are being refilled with > purified propane, called R290. Cheap, with better thermal properties > than R22, but probably not legal when LCM picked up the 6500. When cleaning out a 3rd party CDC dealer quite a few years back, he remarked that the CDC

Re: IBM 1620; was: Early Programming Books

On 6/21/21 1:02 PM, Paul Koning wrote: > Some vague memory says Purdue. LCM actually got it running, which was an > interesting problem. It required recreating the inter-chassis cables (since > the original ones were cut as part of dismantling the machine) and restoring > the cooling system.

Re: IBM 1620; was: Early Programming Books

> On Jun 21, 2021, at 3:52 PM, Chuck Guzis wrote: > > On 6/21/21 11:53 AM, Paul Koning wrote: > >> Perhaps you were thinking about the CDC 6500 at the late lamented LCM? That >> got some replacement stacks, which was an interesting puzzle because the >> read data connection out of the

Re: IBM 1620; was: Early Programming Books

On 6/21/21 11:53 AM, Paul Koning wrote: > Perhaps you were thinking about the CDC 6500 at the late lamented LCM? That > got some replacement stacks, which was an interesting puzzle because the read > data connection out of the memory modules is a differential analog signal > carrying the

Re: IBM 1620; was: Early Programming Books

> On Jun 21, 2021, at 2:43 PM, Chuck Guzis via cctalk > wrote: > > On 6/21/21 10:55 AM, Paul Koning via cctalk wrote: >> > memory. Nobody explained why that was a real problem. >> >> Core memory is fairly sensitive to temperature. In the case of the 1620, >> there is a heating system

RE: IBM 1620; was: Early Programming Books

> -Original Message- > From: cctalk On Behalf Of Chuck Guzis via > cctalk > Sent: 21 June 2021 19:43 > To: Paul Koning via cctalk > Subject: Re: IBM 1620; was: Early Programming Books > > On 6/21/21 10:55 AM, Paul Koning via cctalk wrote: > >

Re: IBM 1620; was: Early Programming Books

On 6/21/21 10:55 AM, Paul Koning via cctalk wrote: > memory. Nobody explained why that was a real problem. > > Core memory is fairly sensitive to temperature. In the case of the 1620, > there is a heating system that brings the core memory box up to its operating > temperature, which is why

Re: IBM 1620 manuals

Jon, The Computer History Museum (Mountain View, California) has the most extensive collection of IBM 1620 items - hardware, manuals, books, software, etc. - in the world.  Most of the items were collected a number of years ago when a team of volunteers restored the museum's IBM 1620 Model 1

Re: IBM 1620 manuals

On 05/13/2019 10:57 PM, Jon Elson via cctalk wrote: I just discovered a binder with 2 IBM 1620 manuals. A quick check shows bitsavers has these and newer editions of them. So, does anybody want : IBM 1620 Central Processing Unit, Model 2 (Form A26-5781-1) and IBM 1620 Monitor II System

RE: IBM 1620

On making PC boards, we had a shop mix the top and bottom layers. They tried to tell us it didn't matter but our boards had an edge connector, with different fingers on each side. It was expensive high temperature PC board as well. Dwight

Re: IBM 1620

On Fri, Aug 28, 2015 at 5:08 PM, Lyle Bickley wrote: > On Thu, 27 Aug 2015 14:28:30 -0500 > Ben Sinclair wrote: > >> The CHM has a bit of information, and links to three other 1620's that >> they know about: >>

Re: IBM 1620

On 08/31/2015 02:59 AM, Dave G4UGM wrote: I seem to remember that 1620 core runs warm, and you have to wait for it to get warm before the machine comes on-line ... see last paragraph http://www.angelfire.com/oh3/ebjoew/IBM_1620_Core_Memory.html Yes, many IBM machines used heaters to

Re: IBM 1620

On 08/30/2015 02:00 PM, Jon Elson wrote: I hacked a fiber optic light pen onto a Calcomp plotter and made some artwork directly onto film, and then in 1996 I built a laser photoplotter that cranks out 1000x1000 DPI images on red-sensitive film at 0.6 inches/minute. It can do up to 20 x 24"

Re: IBM 1620

On 08/30/2015 05:09 PM, Chuck Guzis wrote: On 08/30/2015 02:00 PM, Jon Elson wrote: I hacked a fiber optic light pen onto a Calcomp plotter and made some artwork directly onto film, and then in 1996 I built a laser photoplotter that cranks out 1000x1000 DPI images on red-sensitive film at

Re: IBM 1620

> [...] then in 1996 I built a laser photoplotter that cranks out > 1000x1000 DPI images on red-sensitive film at 0.6 inches/minute. I'd be very interested in anything you care to share about its design and building /~\ The ASCII Mouse \ / Ribbon Campaign X

RE: IBM 1620

-Original Message- From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Tothwolf Sent: Sunday, August 30, 2015 1:57 AM To: General Discussion: On-Topic and Off-Topic Posts cctalk@classiccmp.org Subject: Re: IBM 1620 On Sat, 29 Aug 2015, Paul Koning wrote: On Aug 29

Re: IBM 1620

On Aug 30, 2015, at 9:28 AM, Dave G4UGM dave.g4...@gmail.com wrote: ... Interesting. I remember learning about the processes DEC used. No fancy machines, just a flat plate jig with slots to hold the cores in their correct position, and nimble-fingered Oriental ladies to thread the wire

Re: IBM 1620

On 08/30/2015 12:15 PM, Paul Koning wrote: Perhaps CDC's ECS? 125k (funny number that) words per memory bank. Possibly. We used a lot of it in SSD. 4MW installations were not uncommon, shared among 2-4 mainframes. As I recall, core errors were not treated the same way as CM--part of

Re: IBM 1620

On 08/30/2015 03:04 PM, Chuck Guzis wrote: PCB design was also a specialty, what with mylar film, tape, white-out and India ink and, of course, an X-acto knife. The best people at this seemed to be from the Far East. Done probably at 4X scale, then reduced for production. Yup, back in

Re: IBM 1620

On 08/30/2015 11:15 AM, Paul Koning wrote: So there'd be what, 120,000 cores to thread? That might be a bit daunting from a human-hour standpoint. I'll wager that 120K cores wasn't even a day's output for outfits like Fabritek. Those cores weren't threaded one by one. You'd start by setting

Re: IBM 1620

On Aug 30, 2015, at 2:34 PM, Chuck Guzis ccl...@sydex.com wrote: ... I have heard of machine-fabricated core as well, but I thought that it only applied to larger, slower bulk core store. One can certainly understand why plated-wire or thin-film technologies were attractive. Perhaps

RE: IBM 1620

On Sun, 30 Aug 2015, Dave G4UGM wrote: On Sat, 29 Aug 2015, Tothwolf wrote: IBM had special machines to position and thread them. http://ibm-1401.info/IBMCoreArraysIEEEMagnetics1969.pdf Thanks for posting that. Very interesting. Looking at it, the machines are extremely complex, but I am

Re: IBM 1620

On Aug 30, 2015, at 4:49 AM, Dave G4UGM dave.g4...@gmail.com wrote: ... IBM had special machines to position and thread them. http://ibm-1401.info/IBMCoreArraysIEEEMagnetics1969.pdf Interesting. I remember learning about the processes DEC used. No fancy machines, just a flat plate jig

Re: IBM 1620

On Sun, 30 Aug 2015, Paul Koning wrote: On Aug 30, 2015, at 1:55 PM, Chuck Guzis ccl...@sydex.com wrote: On 08/30/2015 09:47 AM, Tothwolf wrote: If repair of the core memory in CHM's IBM 1620 is ever attempted, I think either low-tin solder alloy with 1-2% added copper or possibly a more

Re: IBM 1620

On 8/30/2015 6:32 PM, Tothwolf wrote: On page 5, they describe 0.0031 40 AWG magnet wire being reduced to 0.002 after soldering with 60/40 tin-lead solder. That 0.0011 reduction is basically 1/3 of the diameter of the wire. This explains the failures of the enamel wires in CHM's IBM 1620.

Re: IBM 1620

On Sun, 30 Aug 2015, Chuck Guzis wrote: On 08/30/2015 09:47 AM, Tothwolf wrote: If repair of the core memory in CHM's IBM 1620 is ever attempted, I think either low-tin solder alloy with 1-2% added copper or possibly a more modern indium-lead solder alloy would probably be the best choice for

Re: IBM 1620

On Sun, 30 Aug 2015, ben wrote: On 8/30/2015 6:32 PM, Tothwolf wrote: On page 5, they describe 0.0031 40 AWG magnet wire being reduced to 0.002 after soldering with 60/40 tin-lead solder. That 0.0011 reduction is basically 1/3 of the diameter of the wire. This explains the failures of the

Re: IBM 1620

On 08/30/2015 05:16 PM, Tothwolf wrote: According to IBM's paper, extra cores were threaded initially and used to replace any cores that tested bad during assembly. Any extras were crushed after assembly to remove them. I suspect there were also extra rows after shipment as well. I seem to

Re: IBM 1620

On Aug 29, 2015, at 12:36 AM, Lyle Bickley lbick...@bickleywest.com wrote: ... I was not on the Team that did the memory analysis and the ultimate modern replacement memory. However, when I joined the Team, I asked similar questions and was told that the core memory was literally

Area 51 - was Re: CDC-160 (was Re: IBM 1620)

On 2015-08-28 9:49 PM, Eric Smith wrote: On Fri, Aug 28, 2015 at 4:57 PM, ben bfranc...@jetnet.ab.ca wrote: Just the US goverment in general. Try area 51 next. Don't bother. There's nothing interesting in Area 51 any more; due to all the publicity Area 51 has gotten, they've long since moved

Re: IBM 1620

On Sat, 29 Aug 2015, Paul Koning wrote: On Aug 29, 2015, at 12:36 AM, Lyle Bickley lbick...@bickleywest.com wrote: I was not on the Team that did the memory analysis and the ultimate modern replacement memory. However, when I joined the Team, I asked similar questions and was told that the

CDC-160 (was Re: IBM 1620)

(Rumor was that there was also a CDC-160A in somebody's basement here in town, as well). Speaking of which: http://www.ebay.com/itm/Vintage-Control-Data-160-Computer-System-Vintage-Computer-/252070822992?hash=item3ab0978450 Maybe it's the one from that basement :) Cheers, Pierre

RE: IBM 1620

:41 To: cctalk@classiccmp.org Subject: Re: IBM 1620 On 8/27/2015 9:18 PM, Kevin Tikker wrote: Thanks very much for the link. Maybe there is one out there There were two IBM 1620's in the College of Engineering in Madison, WI when I started school, and rumor was that one of them ended

Re: CDC-160 (was Re: IBM 1620)

On 8/28/2015 3:14 AM, P Gebhardt wrote: We all KNOW the government people still have one running for your tax . After all the bribes and shady dealings it gets turned on twice a year. Too old to have the Y2000 bug. Ben.

Re: IBM 1620

On Aug 28, 2015, at 1:30 AM, Chuck Guzis ccl...@sydex.com wrote: ... Well, other than the Model I (CADET) typewriter acting as if it were going to fly apart at any time, the 1311 disk drive was fun to watch. Especially if you didn't have the direct seek option. I had a one-card program

Re: CDC-160 (was Re: IBM 1620)

Cool. Wonder what it will go for. JRJ On 8/28/2015 4:14 AM, P Gebhardt wrote: (Rumor was that there was also a CDC-160A in somebody's basement here in town, as well). Speaking of which:

Re: IBM 1620

On Thu, 27 Aug 2015, Lyle Bickley wrote: The IBM 1620 at the CHM is a running computer. There were two teams that worked on the 1620 at the CHM. The first Team got it running. Unfortunately, IBM used the wrong kind of solder on the core memory and so the wires of the core memory literally

Re: IBM 1620

On 08/28/2015 07:42 AM, Tothwolf wrote: With all the different solder alloys I work with regularly, I have to ask...what type of solder caused that sort of damage? Was it the alloy itself, or did IBM use a flux which was too active and then failed to clean away all the residue? If they used a

Re: IBM 1620

On Fri, 28 Aug 2015, Lyle Bickley wrote: On Fri, 28 Aug 2015 20:31:16 -0500 (CDT) Tothwolf wrote: I think I've answered my own question today while looking at a datasheet for another type of solder. My guess is that the solder they used did not contain any copper, and the tin in the solder

Re: CDC-160 (was Re: IBM 1620)

On Fri, Aug 28, 2015 at 4:57 PM, ben bfranc...@jetnet.ab.ca wrote: Just the US goverment in general. Try area 51 next. Don't bother. There's nothing interesting in Area 51 any more; due to all the publicity Area 51 has gotten, they've long since moved all the good stuff to Area 52, which still

Re: IBM 1620

On Fri, 28 Aug 2015 20:31:16 -0500 (CDT) Tothwolf tothw...@concentric.net wrote: On Fri, 28 Aug 2015, Chuck Guzis wrote: On 08/28/2015 07:42 AM, Tothwolf wrote: With all the different solder alloys I work with regularly, I have to ask...what type of solder caused that sort of damage? Was

Re: IBM 1620 / IBM 1401.

Here in Australia, the Australian Computer Museum Society has an IBM 1401 - just the big CPU unit. We know of an IBM 1620 CPU unit in Computer Sciences at the University of NSW. I worked on a 1620 in the 1960s - and thought that it was 'magic'. Sadly, we don't have enough sponsors to put

Re: CDC-160 (was Re: IBM 1620)

On Fri, 28 Aug 2015, ben wrote: On 8/28/2015 3:17 PM, Jay Jaeger wrote: I expect that Ben's posting was a joke directed at the IRS. Just the US goverment in general. Try area 51 next. The 1980's was the last use I suspect of the 1965's machines. The military used 1950's machines into

Re: IBM 1620

On Fri, 28 Aug 2015, Chuck Guzis wrote: On 08/28/2015 07:42 AM, Tothwolf wrote: With all the different solder alloys I work with regularly, I have to ask...what type of solder caused that sort of damage? Was it the alloy itself, or did IBM use a flux which was too active and then failed to

Re: IBM 1620

On 08/28/2015 05:59 AM, Paul Koning wrote: Especially if you didn't have the direct seek option. I had a one-card program that would do for (i=0; i100; i++) seek_cylinder(i). That doesn't step track to track as you would expect; instead, it goes from track n to 0 to n+1, resulting in

Re: IBM 1620

I attended Vista at both locations the main building and the basement of the former Ross store. The new building was a mess, half finished, poorly designed and with the video studio poorly built. Thanks for the info on the 1620. Petals is such a vast organization it's entirely possible some

Re: IBM 1620

On Thu, 27 Aug 2015, Kevin Tikker wrote: I went to both Laney and Berkeley City College so you may have a clue. Thank you If you actually want to follow-up on such tenuous leads, . . . Wil Price would know what happened to the 1620 and 1401. So would Ben Micallef and Jack Olson, but they're

Re: CDC-160 (was Re: IBM 1620)

Which government agency? Sent from my iPhone On Aug 28, 2015, at 5:15 AM, ben bfranc...@jetnet.ab.ca wrote: On 8/28/2015 3:14 AM, P Gebhardt wrote: We all KNOW the government people still have one running for your tax . After all the bribes and shady dealings it gets turned on twice

Re: CDC-160 (was Re: IBM 1620)

On 8/28/2015 2:00 PM, Kevin Tikker wrote: Which government agency? Sent from my iPhone On Aug 28, 2015, at 5:15 AM, ben bfranc...@jetnet.ab.ca wrote: On 8/28/2015 3:14 AM, P Gebhardt wrote: We all KNOW the government people still have one running for your tax . After all the

Re: IBM 1620

On Fri, 28 Aug 2015, Kevin Tikker wrote: I attended Vista at both locations the main building and the basement of the former Ross store. The new building was a mess, half finished, poorly designed and with the video studio poorly built. It is now a mess, half finished (unwired handicap door

Re: IBM 1620

On 8/27/2015 2:46 AM, Kevin Tikker wrote: Looking for an IBM 1620 to purchase. Any leads greatly appreciate. Kevin Tikker Sent from my iPhone Sending from a Telephone, would have worked when they were shiny and new. Good luck Digging for one.

Re: IBM 1620

:07 PM, Dave G4UGM dave.g4...@gmail.com wrote: -Original Message- From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of william degnan Sent: 27 August 2015 20:00 To: General Discussion: On-Topic and Off-Topic Posts cctalk@classiccmp.org Subject: Re: IBM 1620 How many

Re: IBM 1620

How many exist on Earth at this point? On Thu, Aug 27, 2015 at 1:56 PM, ben bfranc...@jetnet.ab.ca wrote: On 8/27/2015 2:46 AM, Kevin Tikker wrote: Looking for an IBM 1620 to purchase. Any leads greatly appreciate. Kevin Tikker Sent from my iPhone Sending from a Telephone, would have

RE: IBM 1620

-Original Message- From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of william degnan Sent: 27 August 2015 20:00 To: General Discussion: On-Topic and Off-Topic Posts cctalk@classiccmp.org Subject: Re: IBM 1620 How many exist on Earth at this point? Three or four

Re: IBM 1620

On 8/27/2015 3:49 PM, william degnan wrote: I'd like a 1620 too please. .. or a 1710 if I have to settle. In all seriousness I may not have the machines but I do have a lot of 1401/1620/1710 docs on hand in my little private library here in Landenberg, should anyone be passing this way.

Re: IBM 1620

heh...well I didn't say it was a *good* chance, but one can always hope... On Thu, Aug 27, 2015 at 5:54 PM, Jay Jaeger cu...@charter.net wrote: On 8/27/2015 3:49 PM, william degnan wrote: I'd like a 1620 too please. .. or a 1710 if I have to settle. In all seriousness I may not have the

Re: IBM 1620

On 08/27/2015 09:18 PM, Kevin Tikker wrote: Thanks very much for the link. Maybe there is one out there I believe Lewis and Clark College in Godfrey, IL had a 1620 that I saw in about 1980. I have no idea if anyone in the area still has it. Jon

Re: IBM 1620

There were two IBM 1620's in the College of Engineering in Madison, WI On Thu, 27 Aug 2015, Kevin Tikker wrote: A possible lead? There was one at Merritt College in Oakland during the days when the Black Panthers started out there. If you make a list of every one that there was, you're

Re: IBM 1620

On 8/27/2015 9:18 PM, Kevin Tikker wrote: Thanks very much for the link. Maybe there is one out there There were two IBM 1620's in the College of Engineering in Madison, WI when I started school, and rumor was that one of them ended up in somebody's basement. Whether or not that rumor was

Re: IBM 1620

On 08/27/2015 09:02 PM, Fred Cisin wrote: There were two IBM 1620's in the College of Engineering in Madison, WI On Thu, 27 Aug 2015, Kevin Tikker wrote: A possible lead? There was one at Merritt College in Oakland during the days when the Black Panthers started out there. ...and let's

Re: IBM 1620

To: General Discussion: On-Topic and Off-Topic Posts cctalk@classiccmp.org Subject: Re: IBM 1620 How many exist on Earth at this point? Three or four perhaps? Rare and Valuable perhaps On Thu, Aug 27, 2015 at 1:56 PM, ben bfranc...@jetnet.ab.ca wrote: On 8/27/2015 2:46

Re: IBM 1620

I went to both Laney and Berkeley City College so you may have a clue. Thank you Kevin Sent from my iPhone On Aug 27, 2015, at 9:02 PM, Fred Cisin ci...@xenosoft.com wrote: There were two IBM 1620's in the College of Engineering in Madison, WI On Thu, 27 Aug 2015, Kevin Tikker wrote: A

Re: IBM 1620

Great series of books the film was based on Sent from my iPhone On Aug 27, 2015, at 9:28 PM, Chuck Guzis ccl...@sydex.com wrote: On 08/27/2015 09:02 PM, Fred Cisin wrote: There were two IBM 1620's in the College of Engineering in Madison, WI On Thu, 27 Aug 2015, Kevin Tikker wrote: A

Re: IBM 1620

] On Behalf Of william degnan Sent: 27 August 2015 20:00 To: General Discussion: On-Topic and Off-Topic Posts cctalk@classiccmp.org Subject: Re: IBM 1620 How many exist on Earth at this point? Three or four perhaps? Rare and Valuable perhaps On Thu, Aug 27, 2015 at 1:56 PM, ben

Re: IBM 1620

A possible lead? Sent from my iPhone On Aug 27, 2015, at 7:41 PM, Jay Jaeger cu...@charter.net wrote: On 8/27/2015 9:18 PM, Kevin Tikker wrote: Thanks very much for the link. Maybe there is one out there There were two IBM 1620's in the College of Engineering in Madison, WI when I