RE: VAX 4000-500 PSU Overload?

2015-12-12 Thread Richard Loken
On Fri, 11 Dec 2015, Robert Jarratt wrote: > Well, I have the exception that proves the rule. My H7864 PSU (from an > rtVAX 1000, same PSU as MicroVAX II) had a switching transistor and > resistor fail, no cap failures Well, I did admit I was exagerrating. :) -- Richard Loken VE6BSV, Uni

Re: IDE knowledge anyone?

2015-12-12 Thread Oliver Lehmann
Chuck Guzis wrote: On 12/11/2015 05:02 PM, Oliver Lehmann wrote: Which is perfectly fine - I just want to see what is going on the drive interface + timings - to see what is going on differently from my implementation. If I've got the drive and it's working, at least I've got some x86 co

2.9.1 BSD on 11/34 + sc21-bm + fujitsu m2333k

2015-12-12 Thread Jacob Ritorto
Exciting stuff for a Friday night, right? Here's a visual aid in case you're needing further inspiration: https://www.instagram.com/p/_K-zHhHvLn78Qu5ijWqMf-HBem1LKMLaEdI1c0/ The M2333K is the smaller one on the left with the green and yellow lights on. I'm booting from rl0, which contains the tuh

Re: 2.9.1 BSD on 11/34 + sc21-bm + fujitsu m2333k

2015-12-12 Thread Josh Dersch
On 12/11/15 5:50 PM, Jacob Ritorto wrote: Exciting stuff for a Friday night, right? Here's a visual aid in case you're needing further inspiration: https://www.instagram.com/p/_K-zHhHvLn78Qu5ijWqMf-HBem1LKMLaEdI1c0/ The M2333K is the smaller one on the left with the green and yellow lights on.

Re: 2.9.1 BSD on 11/34 + sc21-bm + fujitsu m2333k

2015-12-12 Thread Ethan Dicks
On Fri, Dec 11, 2015 at 8:50 PM, Jacob Ritorto wrote: > Exciting stuff for a Friday night, right? It is! > https://www.instagram.com/p/_K-zHhHvLn78Qu5ijWqMf-HBem1LKMLaEdI1c0/ Nice! > xp0a: hard error bn cs2=1100 er1=0 > > on every single block when I try to mkfs /dev/xp0a 4800 I can't h

Re: Castlevaina for the Commodore 64

2015-12-12 Thread Mike
Sent from my iPhone > On Dec 10, 2015, at 2:55 AM, "drlegendre ." wrote: > > Hey Mike, > > Thanks, but I don't know if I need the codes, they are probably posted > online? In any case, I found the game in my archive, so I attached it for > you.. > > It's in a zip file, containing one or two

Re: [cctalk] Re: TOP POSTING

2015-12-12 Thread Liam Proven
On 12 December 2015 at 03:00, Rich Alderson wrote: > From: Liam Proven > Sent: Friday, December 11, 2015 10:54 AM > >> On 10 December 2015 at 20:42, Rich Alderson >> wrote: > >>> From: Liam Proven >>> Sent: Thursday, December 10, 2015 8:33 AM > *I* never delete my emails. I have a trail bac

Commodore 64?

2015-12-12 Thread Mike
If I would have known!!! WOW I would have just read more posts before I posted my first post look at this mess... There is no reason for people to be rude or disrespectful to new people like myself. I have never joined a place like this I know now that it has been said 1 times to sc

Re: Best 200 buck I have ever spent!!! Deal of a lifetime!!!

2015-12-12 Thread Mike
Sent from my iPhone > On Dec 10, 2015, at 7:20 PM, Jason T wrote: > >> On Thu, Dec 10, 2015 at 6:13 PM, drlegendre . wrote: >> But yes, there are methods (even from the classic era) to load arbitrary >> code into the 2600 using a proprietary cartridge and a cassette tape >> machine. In essenc

Re: CREEPYPASTA

2015-12-12 Thread Mike
Sent from my iPhone On Dec 10, 2015, at 7:45 AM, Noel Chiappa wrote: >> From: Pontus Pihlgren > >> Once, I was told by a friend that he had dumpstered not one but two >> PDP-12s!! > >> It still gives me the chills. > > I can top that. Someone told me they were going to start a thread about

Re: Commodore 64?

2015-12-12 Thread william degnan
On Dec 12, 2015 6:41 AM, "Mike" wrote: > > If I would have known!!! > > WOW I would have just read more posts before I posted my first post look at this mess... There is no reason for people to be rude or disrespectful to new people like myself. I have never joined a place like this I know now tha

Re: Commodore 64?

2015-12-12 Thread Mike
NonStopTalk Team > On Dec 12, 2015, at 6:57 AM, william degnan wrote: > >> On Dec 12, 2015 6:41 AM, "Mike" wrote: >> >> If I would have known!!! >> >> WOW I would have just read more posts before I posted my first post look > at this mess... There is no reason for people to be rude or disre

Re: [cctalk] Re: TOP POSTING

2015-12-12 Thread Mike
> On Dec 11, 2015, at 8:00 PM, Rich Alderson > wrote: > > From: Liam Proven > Sent: Friday, December 11, 2015 10:54 AM > >> On 10 December 2015 at 20:42, Rich Alderson >> wrote: > >>> From: Liam Proven >>> Sent: Thursday, December 10, 2015 8:33 AM > *I* never delete my emails. I have

Re: [cctalk] Re: TOP POSTING

2015-12-12 Thread Mike
> On Dec 11, 2015, at 8:00 PM, Rich Alderson > wrote: > > From: Liam Proven > Sent: Friday, December 11, 2015 10:54 AM > >> On 10 December 2015 at 20:42, Rich Alderson >> wrote: > >>> From: Liam Proven >>> Sent: Thursday, December 10, 2015 8:33 AM > *I* never delete my emails. I ha

Re: TOP POSTING (was: RE: Best 200 buck I have ever spent!!! Deal of a lifetime!!!

2015-12-12 Thread Mike
> On Dec 11, 2015, at 7:12 PM, Brent Hilpert wrote: > > On 2015-Dec-11, at 4:43 PM, Fred Cisin wrote: > It's a total waste of time having to re-read all the unnecessary crap many times just to get to a one sentence reply. >> >> IFF people were to be considerate and delete/trim/remov

Display-less computing was Re: TOP POSTING

2015-12-12 Thread Nico de Jong
- Original Message - From: "Mike" To: "General Discussion: On-Topic and Off-Topic Posts" Sent: Saturday, December 12, 2015 2:22 PM Subject: Re: [cctalk] Re: TOP POSTING > The one question I do have for the older gentlemen on here is what in the > world did the computers without a scr

Re: Display-less computing was Re: TOP POSTING

2015-12-12 Thread tulsamike3...@gmail.com
> On Dec 12, 2015, at 7:49 AM, Nico de Jong wrote: > > > - Original Message - > From: "Mike" > To: "General Discussion: On-Topic and Off-Topic Posts" > > Sent: Saturday, December 12, 2015 2:22 PM > Subject: Re: [cctalk] Re: TOP POSTING > >> The one question I do have for the old

Re: TOP POSTING

2015-12-12 Thread Gene Buckle
On 12/11/2015 3:50 PM, Dale H. Cook wrote: At 01:47 PM 12/11/2015, Dave G4UGM wrote I have searched high and low for a decent e-mail client for Windows. I still use Eudora Pro. I'm using the current version of Thunderbird[*] right now and it not only quotes properly, but I've got it configu

Kaypro Motherboard Add-On Question

2015-12-12 Thread Jim Brain
http://www.ebay.com/itm/USED-KAYPRO-4-COMPUTER-MOTHERBOARD-/331730690952? The non soldermask boad on top of the main unit intrigues me. Does anyone know what it is? Jim -- Jim Brain br...@jbrain.com www.jbrain.com

Re: [cctalk] Head-less computers (Was: TOP POSTING

2015-12-12 Thread Fred Cisin
[2^6 lines of irrelevance omitted] On Sat, 12 Dec 2015, Mike wrote: The one question I do have for the older gentlemen on here is what in the world did the computers without a screen to look at do? Now I know about the tape, cassette tape's and even the paper with the hole punches in them but

Re: Kaypro Motherboard Add-On Question

2015-12-12 Thread Glen Slick
On Sat, Dec 12, 2015 at 8:32 AM, Jim Brain wrote: > http://www.ebay.com/itm/USED-KAYPRO-4-COMPUTER-MOTHERBOARD-/331730690952? > > The non soldermask boad on top of the main unit intrigues me. Does anyone > know what it is? > > Jim The board says Centram Systems, Inc, Camp Hill, Pa. There is a m

Re: [cctalk] Re: TOP POSTING

2015-12-12 Thread Jon Elson
On 12/12/2015 07:22 AM, Mike wrote: The one question I do have for the older gentlemen on here is what in the world did the computers without a screen to look at do? Now I know about the tape, cassette tape's and even the paper with the hole punches in them but what kind of applications were t

Re: 2.9.1 BSD on 11/34 + sc21-bm + fujitsu m2333k

2015-12-12 Thread Josh Dersch
On 12/11/15 9:33 PM, Josh Dersch wrote: On 12/11/15 5:50 PM, Jacob Ritorto wrote: Exciting stuff for a Friday night, right? Here's a visual aid in case you're needing further inspiration: https://www.instagram.com/p/_K-zHhHvLn78Qu5ijWqMf-HBem1LKMLaEdI1c0/ The M2333K is the smaller one on the lef

Re: Display-less computing was Re: TOP POSTING

2015-12-12 Thread Robert Rissell
Mike, One of the key manners of getting information processed was batch jobs run by the computer staff.You never see the computer at all. Individual programs (usually one at a time - using the whole machine for one program) were loaded, pointed at input files, run and then unloaded with the o

Re: Display-less computing was Re: TOP POSTING

2015-12-12 Thread Jon Elson
On 12/12/2015 08:18 AM, tulsamike3...@gmail.com wrote: So did you have to learn how to read the punch hole cards also or did the punch hole cards go into the computer and than printed out the data on the fan fold paper also was it in code or just plane English? You COULD read the holes, if you

Re: TOP POSTING

2015-12-12 Thread Jon Elson
On 12/12/2015 09:07 AM, Gene Buckle wrote: [*] A power outage on Wednesday killed the power supply in my main mail exchanger that I read email on via Alpine. F*ck Dell and their proprietary power supplies and connectors! All my Dell Optiplex boxes (that's the commercial grade models) h

Re: Display-less computing was Re: TOP POSTING

2015-12-12 Thread Fred Cisin
On Sat, 12 Dec 2015, tulsamike3...@gmail.com wrote: So did you have to learn how to read the punch hole cards also or did the punch hole cards go into the computer and than printed out the data on the fan fold paper also was it in code or just plane English? Yes. If you dealt with the cards l

Re: Display-less computing

2015-12-12 Thread William Donzelli
> Sometime later, maybe around 1971 they got some IBM 2741 terminals which > were Selectric typewriters connected to an interface. Later they got some > IBM 2260's, which were Zenith 9" TV sets and a keyboard connected to an > interface box in the machine room. Very primitive, but very interactiv

Re: Display-less computing

2015-12-12 Thread Fred Cisin
Until the advent of "personal" computers, a computer generally did not have a screen. If you were doing stuff for which a creen would be useful, you used a "peripheral" device, called a "terminal".

Re: [cctalk] Re: TOP POSTING

2015-12-12 Thread Charles Anthony
> > > The one question I do have for the older gentlemen on here is what in the > world did the computers without a screen to look at do? Now I know about > the tape, cassette tape's and even the paper with the hole punches in them > but what kind of applications were they use for? Mathematics or?

Re: Best 200 buck I have ever spent!!! Deal of a lifetime!!!

2015-12-12 Thread Jules Richardson
On 12/10/2015 01:11 AM, Mike wrote: WOW sounds like ya got a good haul hope ya did not have to pay to much! No, I got a good deal, although (unsurprisingly) it just about all needs work. One C64 is healthy, the other one gives a black screen. The Vic printer is completely unresponsive, and th

Re: IDE knowledge anyone?

2015-12-12 Thread Chuck Guzis
On 12/11/2015 04:35 PM, Oliver Lehmann wrote: Western Digital Caviar 31600 it is. I took a peek today and found that I've got a couple of AC31200 drives, but no 31600s. Do you think that the 31200 is close enough to your drive? --Chuck

Re: [cctalk] Re: TOP POSTING

2015-12-12 Thread Rob Doyle
On 12/12/2015 6:22 AM, Mike wrote: The one question I do have for the older gentlemen on here is what in the world did the computers without a screen to look at do? Now I know about the tape, cassette tape's and even the paper with the hole punches in them but what kind of applications were they

Re: TOP POSTING

2015-12-12 Thread simon
/dev/null again... On 11-12-15 19:33, Liam Proven wrote: On 10 December 2015 at 18:07, tony duell wrote: If your mail program doesn't let you scroll to the end of a message and start typing then it is fundametnally broken. It may not be convenient, but that is not my problem! Strongly agree

Re: CREEPYPASTA

2015-12-12 Thread Ian Finder
Jay West- for the love of all that is vintage computing, please ban this guy. On Sat, Dec 12, 2015 at 4:13 AM, Mike wrote: > > > Sent from my iPhone > > On Dec 10, 2015, at 7:45 AM, Noel Chiappa wrote: > > >> From: Pontus Pihlgren > > > >> Once, I was told by a friend that he had dumpstered not

Re: Commodore 64?

2015-12-12 Thread ethan
If I would have known!!! WOW I would have just read more posts before I posted my first post look at this mess... There is no reason for people to be rude or disrespectful to new people like myself. I have never joined a place like this I know now that it has been said 1 times to sc

Re: TOP POSTING

2015-12-12 Thread Dave Woyciesjes
On 12/11/2015 05:57 PM, Dave Wade wrote: , Dave G4UGM wrote: However, I used to use and like Thunderbird and still do on Linux and Mac. Thunderbird is a PITA. In order to get buttons that let you go to the next message you need several plug-ins... Uh, no you don't. RIght-click

RE: Bye for now... was:

2015-12-12 Thread Rick Bensene
Simon Claessen wrote: > > Another great day started with me deciding that thorwing away 70% of a list > every day is not worthwhile any more. This list is acting like Whatsapp and > Facebook more and more. > > It seems that a lot of people are unable to keep on topic. Its a shame. > It would be s

Bye for now... was:

2015-12-12 Thread simon
Hi all. Another great day started with me deciding that thorwing away 70% of a list every day is not worthwhile any more. This list is acting like Whatsapp and Facebook more and more. It seems that a lot of people are unable to keep on topic. Its a shame. It would be so handy if people could

Re: TOP POSTING

2015-12-12 Thread Dave Woyciesjes
On 12/11/2015 05:58 PM, Dave Wade wrote: -Original Message- From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of wulfman Sent: 11 December 2015 19:26 To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: TOP POSTING Thunderbird has calendars now. Only with

Re: IDE knowledge anyone?

2015-12-12 Thread Oliver Lehmann
Chuck Guzis wrote: On 12/11/2015 04:35 PM, Oliver Lehmann wrote: Western Digital Caviar 31600 it is. I took a peek today and found that I've got a couple of AC31200 drives, but no 31600s. Do you think that the 31200 is close enough to your drive? Probably yes - has it a blue line in

Re: Maximizing value selling a working 11/34

2015-12-12 Thread Ben Sinclair
I'm also interested if you have any information about what the system was doing Noel! Was it in use until just recently? It's always fun to hear about older systems that are still being used for production work. On Tue, Dec 8, 2015 at 8:09 AM, Noel Chiappa wrote: > So I know someone who has a wo

Re: IDE knowledge anyone?

2015-12-12 Thread Chuck Guzis
On 12/12/2015 12:23 PM, Oliver Lehmann wrote: http://files.pofo.de/20151212_212051.jpg http://files.pofo.de/20151212_212105.jpg I also have newer Caviars 26400 and 23200 which are working fine. Nope--green line and the PCB doesn't look like yours. I have an orange 22500 and that, again, u

Re: Display-less computing

2015-12-12 Thread Jon Elson
On 12/12/2015 11:17 AM, William Donzelli wrote: Sometime later, maybe around 1971 they got some IBM 2741 terminals which were Selectric typewriters connected to an interface. Later they got some IBM 2260's, which were Zenith 9" TV sets and a keyboard connected to an interface box in the machine

Re: Display-less computing

2015-12-12 Thread Paul Koning
> On Dec 12, 2015, at 4:26 PM, Jon Elson wrote: > > On 12/12/2015 11:17 AM, William Donzelli wrote: >>> Sometime later, maybe around 1971 they got some IBM 2741 terminals which >>> were Selectric typewriters connected to an interface. Later they got some >>> IBM 2260's, which were Zenith 9" TV

RE: Bye for now... was:

2015-12-12 Thread Doug Jackson
I've been a member of this list for many years. Sometimes people are on topic. Sometimes they are not. But the list remains a useful source of infirmation and trivia alike. I understand where the key is, and what its function is. I have found that judicious use can increase my happyness le

RE: TOP POSTING

2015-12-12 Thread Dave Wade
> >> Thunderbird has calendars now. > >> > > > > Only with more plug-ins > > > > You're not running current Thunderbird, are you? I am, and I see that as from V38 (basically the current version) the calendar add-on is bundled with Thunderbird BUT ITS STILL AN ADDON THAT HAS TO BE SEPARA

Re: TOP POSTING

2015-12-12 Thread Tony
I am using Thunderbird 38.4.0 on a couple of PC's. I use Google calendar for scheduling. Tony Pflum On 12/12/2015 3:08 PM, Dave Woyciesjes wrote: On 12/11/2015 05:58 PM, Dave Wade wrote: -Original Message- From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of wulfman

Re: IDE knowledge anyone?

2015-12-12 Thread Oliver Lehmann
Chuck Guzis wrote: On 12/12/2015 12:23 PM, Oliver Lehmann wrote: http://files.pofo.de/20151212_212051.jpg http://files.pofo.de/20151212_212105.jpg I also have newer Caviars 26400 and 23200 which are working fine. Nope--green line and the PCB doesn't look like yours. I have an orange

Re: [cctalk] Re: TOP POSTING

2015-12-12 Thread Eric Christopherson
On Sat, Dec 12, 2015, Mike wrote: > The one question I do have for the older gentlemen on here is what in the > world did the computers without a screen to look at do? Now I know about the > tape, cassette tape's and even the paper with the hole punches in them but > what kind of applications we

Re: Display-less computing was Re: TOP POSTING

2015-12-12 Thread Eric Christopherson
On Sat, Dec 12, 2015, Fred Cisin wrote: > you could feed the cards through an INTERPRETER, which printed the card > content on the card. [snip] > For many years, I kept around a plug-board labelled "COBOL INTERPRETER", > just to prove that a COBOL interpreter was possible :-) Are you using "interp

Re: Display-less computing was Re: TOP POSTING

2015-12-12 Thread Eric Christopherson
On Sat, Dec 12, 2015, Robert Rissell wrote: > The batch job consisted of a Batch Number for accounting, the keyword-coded > header card(s) to tell the computer what to do with the following cards > such as Compile, Link, Execute then Output for a Fortran source. [snip] > Following the source you wo

Re: Display-less computing was Re: TOP POSTING

2015-12-12 Thread Fred Cisin
you could feed the cards through an INTERPRETER, which printed the card content on the card. [snip] For many years, I kept around a plug-board labelled "COBOL INTERPRETER", just to prove that a COBOL interpreter was possible :-) On Sat, 12 Dec 2015, Eric Christopherson wrote: Are you using "i

Re: Display-less computing was Re: TOP POSTING

2015-12-12 Thread Charles Anthony
On Sat, Dec 12, 2015 at 4:45 PM, Fred Cisin wrote: > you could feed the cards through an INTERPRETER, which printed the card >>> content on the card. >>> >> [snip] >> >>> For many years, I kept around a plug-board labelled "COBOL INTERPRETER", >>> just to prove that a COBOL interpreter was possib

CBM 1541 drive faults

2015-12-12 Thread Jules Richardson
I have four 1541's now, two of which seem to init OK, and two of which sit there with the drive spindle constantly spinning and the access LEDs lit, the latter behavior which I believe indicates a multitude of possible microcontroller-related faults... I've done the obvious, reseating socket

Re: Display-less computing was Re: TOP POSTING

2015-12-12 Thread Fred Cisin
For many years, I kept around a plug-board labelled "COBOL INTERPRETER", just to prove that a COBOL interpreter was possible :-) notice the "emoticon" at the end of my original post. I was trying to convey knowledge of the misinterpretation, and the humor of it. On Sat, 12 Dec 2015, Charles

Re: Kaypro Motherboard Add-On Question

2015-12-12 Thread Gene Buckle
On 12/12/2015 8:32 AM, Jim Brain wrote: http://www.ebay.com/itm/USED-KAYPRO-4-COMPUTER-MOTHERBOARD-/331730690952? The non soldermask boad on top of the main unit intrigues me. Does anyone know what it is? I'm not sure what the board is, but it's pretty new with a 1993 copyright date on it.

Re: IDE knowledge anyone?

2015-12-12 Thread Chuck Guzis
On 12/12/2015 03:38 PM, Oliver Lehmann wrote: No, I'm only polling the regular status register. The Interrupt pins are not connected. My application is single threaded anyway so polling is fine for me - I would wait anyhow until the interrupt occured. Hmmm, that could be the issue. I remembe

Re: Display-less computing was Re: TOP POSTING

2015-12-12 Thread Brent Hilpert
On 2015-Dec-12, at 4:15 PM, Eric Christopherson wrote: > On Sat, Dec 12, 2015, Robert Rissell wrote: >> The batch job consisted of a Batch Number for accounting, the keyword-coded >> header card(s) to tell the computer what to do with the following cards >> such as Compile, Link, Execute then Outpu

Re: Kaypro Motherboard Add-On Question

2015-12-12 Thread Gene Buckle
On 12/12/2015 8:52 AM, Glen Slick wrote: On Sat, Dec 12, 2015 at 8:32 AM, Jim Brain wrote: http://www.ebay.com/itm/USED-KAYPRO-4-COMPUTER-MOTHERBOARD-/331730690952? The non soldermask boad on top of the main unit intrigues me. Does anyone know what it is? Jim The board says Centram Systems

Re: Display-less computing was Re: TOP POSTING

2015-12-12 Thread Eric Christopherson
On Sat, Dec 12, 2015, Fred Cisin wrote: > For many years, I kept around a plug-board labelled "COBOL INTERPRETER", > just to prove that a COBOL interpreter was possible :-) > > notice the "emoticon" at the end of my original post. I was trying to > convey knowledge of the misinterpretatio

Re: CBM 1541 drive faults

2015-12-12 Thread Mike van Bokhoven
On 13/12/2015 2:01 p.m., Jules Richardson wrote: I have four 1541's now, two of which seem to init OK, and two of which sit there with the drive spindle constantly spinning and the access LEDs lit, the latter behavior which I believe indicates a multitude of possible microcontroller-related fau

Re: TOP POSTING

2015-12-12 Thread dave
When I post from home, I usually have a sig that refers to top posting fouling the order in which people normally read text. Regarding Android, I was talking about a specific mail client that makes it easy to bottom-post. On December 10, 2015 4:44:09 AM PST, Rod Smallwood wrote: >Er nope it j

IBM 2260 acoustic delay line

2015-12-12 Thread Eric Christopherson
On Sat, Dec 12, 2015, Jon Elson wrote (in the big top posting thread): > On 12/12/2015 07:22 AM, Mike wrote: > >The one question I do have for the older gentlemen on here is what in the > >world did the computers without a screen to look at do? Now I know about > >the tape, cassette tape's and even

Re: VAX 4000-200 Battery Location/Removal Question

2015-12-12 Thread william degnan
On Dec 12, 2015 8:04 PM, "Bob Vines" wrote: > > Since I've fallen _way_ behind in reading my email (I'm reading July 2015's > messages now), I've just recently read a thread where removing the > batteries from VAX 4000-xxx systems was discussed and recommended. > > Since I didn't get _any_ documen

VAX 4000-200 Battery Location/Removal Question

2015-12-12 Thread Bob Vines
Since I've fallen _way_ behind in reading my email (I'm reading July 2015's messages now), I've just recently read a thread where removing the batteries from VAX 4000-xxx systems was discussed and recommended. Since I didn't get _any_ documentation when I rescued my VAX 4000-200 system, which modu

Re: IBM 2260 acoustic delay line

2015-12-12 Thread Christian Gauger-Cosgrove
On 12 December 2015 at 22:13, Eric Christopherson wrote: > I'm reading about those terminals and find it just fascinating how they > used acoustic delay line memory to remember the pixels. But I have lots > of questions: > > 1. Did the cables connecting the 2260s to the display controller > actual

Re: IBM 2260 acoustic delay line

2015-12-12 Thread William Donzelli
The IBM 2848, the control unit for the 2260 terminals, contained mercury (!) delay line for the video memory. There may have been some compensation for the transmission to the terminal, but I have have not seen the technical details - I think it was not a concern, probably. Line loss is really not

Re: IBM 2260 acoustic delay line

2015-12-12 Thread dwight
From: cctalk on behalf of Eric Christopherson Sent: Saturday, December 12, 2015 7:13 PM To: General Discussion: On-Topic and Off-Topic Posts Subject: IBM 2260 acoustic delay line On Sat, Dec 12, 2015, Jon Elson wrote (in the big top posting thread): >