Re: New website has gone live

2019-11-12 Thread ben via cctalk
On 11/12/2019 9:45 AM, Jay Jaeger via cctalk wrote: After months of procrastination and work, my new website has gone live at: https://www.computercollection.net/ It is a nearly complete makeover. The home page also has a link to what my site used to look like. (Context: The website used to

Re: Anyone familiar with these vintage touchscreens?

2019-10-19 Thread ben via cctalk
On 10/19/2019 12:23 PM, Nigel Johnson via cctalk wrote: Judging by the year, it was probably a teletext terminal. There were various field trials of such systems around that era.  We had one in Toronto's Eaton Centre - it was based on NAPLPS, and used a PDP11/23. There was a lot of Canadian

Re: Unix v2 in PDP-7 assembly language

2019-10-18 Thread ben via cctalk
On 10/18/2019 1:36 PM, Thomas Dzubin via cctalk wrote: I don't have a PDP-7 to try it out on, but here it is: https://computerhistory.org/blog/the-earliest-unix-code-an-anniversary-source-code-release/ and

Re: Looking for front panel switch-- front panels

2019-10-06 Thread ben via cctalk
On 10/5/2019 7:28 PM, Charles via cctalk wrote: Does anyone have a matching switch they're not using? I have a spare black lever, but it's supposed to be blue for that nibble which would be even better ;) Thanks for any help. Surplus is not what it was 40 years ago. Several people are

Re: LISP implementations on small machines

2019-10-03 Thread ben via cctalk
On 10/3/2019 10:01 AM, Noel Chiappa via cctalk wrote: > From: Paul Koning > Some early machines, the PDP-6 I believe is an example, have > "registers" in the ISA but they actually correspond to specific parts > of main memory. The PDP-6 and KA10 (basically a

Re: Course materials for MIT 6.031 (c. 1974) scanned

2019-10-01 Thread ben via cctalk
On 10/1/2019 1:38 AM, Christian Corti via cctalk wrote: On Mon, 30 Sep 2019, ben wrote: A quick look,  nothing is said about Algol, did you mean Assembler? what I see is interesting is that LISP is on a 11. I allways thought LISP only ran on BIGGER machines. I have the source and binary for

Re: Course materials for MIT 6.031 (c. 1974) scanned

2019-09-30 Thread ben via cctalk
On 9/30/2019 2:43 PM, Josh Dersch via cctalk wrote: See Chapter 3, pg. 249 in the PDF. - Josh I only read THE TABLE OF CONTENTS... I was not expecting a bunch of files all in one big PDF. I view all my PDFs on my tablet, the screen size fits better than the WIDE SCREEN CinemaScope* format of

Re: Course materials for MIT 6.031 (c. 1974) scanned

2019-09-30 Thread ben via cctalk
On 9/30/2019 12:50 PM, Josh Dersch via cctalk wrote: Thought someone here might find this interesting; I have a binder of materials describing the entire course (descriptions of the PDP-11/45 DELPHI system, readings, coursework, quizzes, exams (with answers)) for MIT 6.031 "Structure and

Re: Raymond Check discusses MS DOS Floppy Disk Cache

2019-09-24 Thread ben via cctalk
On 9/24/2019 1:40 PM, Christian Liendo via cctalk wrote: I meant to say Raymond Chen and it didn't notice the spell check change Sometimes modern technology sucks. On Tue, Sep 24, 2019 at 3:18 PM Christian Liendo wrote: How did MS-DOS decide that two seconds was the amount of time to keep

Re: sa...@elecplus.com

2019-09-24 Thread ben via cctalk
On 9/24/2019 8:19 AM, Electronics Plus via cctalk wrote: There is an entire process I go through. Paintbrush and vacuum for removing loose debris. Various cleaners. Ultrasonic cleaner for the caps. It can take over an hour to really get one looking new again. Well what is it for cleaners?

Re: Vulnerabilities (Was: [Simh] Fwd: VAX + Spectre

2019-09-17 Thread ben via cctalk
Windows _is_ Bells and Whistles, plus a couple of gongs. No ... The GONGS is the chinese knock off.

Re: Vulnerabilities (Was: [Simh] Fwd: VAX + Spectre

2019-09-17 Thread ben via cctalk
On 9/17/2019 1:08 PM, Fred Cisin via cctalk wrote: On Tue, 17 Sep 2019, Paul Koning via cctalk wrote: I could easily imagine a computer science exam question "Describe in one paragraph the specific design error that enabled the Meltdown attack". I used to have some related questions in my

Re: Test message

2019-09-13 Thread ben via cctalk
On 9/13/2019 3:00 PM, Al Kossow via cctalk wrote: On 9/13/19 1:44 PM, Senile Old Man via cctalk wrote: Uninstall and reinstall the OS. Nice to see this list continues to circle the bowl. Bare metal machines don't need a OS. Just liner notes on the drum in felt pen. Bad sector. Core dump

Re: Ferroresonant transformer supply repair

2019-09-10 Thread ben via cctalk
On 9/8/2019 9:54 PM, Chuck Guzis via cctalk wrote: On 9/8/19 7:41 PM, Kyle Owen via cctalk wrote: I can't seem to find motor caps that meet the voltage spec of 660V. 8uF doesn't seem like a problem, but the combination together isn't looking good. Are there any specific vendors I should be

Re: TRS-80 Fireworks

2019-08-28 Thread ben via cctalk
On 8/28/2019 4:50 PM, Kevin Parker via cctalk wrote: Quite normal - the capacitors dry out after about 30 or 40 years - there's lots of info around on replacing them with a polymer capacitor. I have over 20 TRS-80's with a large contingent of Model 3, 4, 4Ps, 12 and 16s - all had the same

Re: Shipping from Europe to USA

2019-08-24 Thread ben via cctalk
On 8/24/2019 1:25 PM, John Herron via cctalk wrote: With all of the stories. I don't know if it exists internationally but I think the moral is get insurance with shipper. I thought it was DRIVE your own FORKLIFT. So how did the orginal companies like DEC ship thier products? Ben.

Re: bit-slice and microcode discussion list

2019-08-23 Thread ben via cctalk
On 8/23/2019 12:00 PM, Paul Koning via cctalk wrote: On Aug 23, 2019, at 1:47 PM, Noel Chiappa via cctalk wrote: From: Jon Elson On 08/22/2019 12:47 PM, Tom Uban via cctalk wrote: On a possible related note, I am looking for information on converting CISC instructions to VLIW RISC.

Re: Shipping from Europe to USA

2019-08-22 Thread ben via cctalk
On 8/22/2019 11:31 AM, Steven Stengel via cctalk wrote: How do I ship a 50 pound computer from Europe to the United States? Who has good rates? Thanks- Steve Well good packing would double the weight, and how fast do you/they need it? Ben.

Re: GW-DEC-1: A New DEC Prototyping Board

2019-08-16 Thread ben via cctalk
On 8/16/2019 12:53 PM, Paul Koning via cctalk wrote: From what I remember, the detailed analysis involves an "electrochemical series", which has metals like sodium at one end, copper closer to the middle, and gold at or near the other end. Metals are compatible if their potential value

Re: GW-DEC-1: A New DEC Prototyping Board

2019-08-16 Thread ben via cctalk
On 8/16/2019 12:13 PM, systems_glitch via cctalk wrote: Dwight, I spot check boards. I lack sufficiently sensitive instruments to measure actual thickness (even on a surface plate, it's the same for ENIG as hard gold with an 0.0001" indicator) but ENIG won't stand up to a few swipes with an ink

Re: Archiving information, was Re: ADM-3A question

2019-08-16 Thread ben via cctalk
On 8/16/2019 1:50 AM, Christian Corti via cctalk wrote: On Thu, 15 Aug 2019, Noel Chiappa wrote: An additional issue, I think, is that Google is deprecating sites that use HTTP, versus HTTPS. I can't comment more, lest I start ranting at the utter Not true, in contrary, Google even crawls

Re: Archiving information, was Re: ADM-3A question

2019-08-15 Thread ben via cctalk
On 8/15/2019 4:33 PM, Marvin Johnston via cctalk wrote: Instead of the search engines working to improve AI, they should be putting more effort into ESP. However with 'FREE' web hosting vanishing faster the Dodo, you have lost most of the Small sites that may of had the information. A blog

Re: ADM-3A question

2019-08-14 Thread ben via cctalk
On 8/14/2019 12:46 PM, Seth J. Morabito via cctalk wrote: It's not clear that it's the dynamic nature of the content he's unhappy with; it might just be that having stuff scattered across a zillion personal pages (be they blogs, or whatever) is going to make it hard to find the useful one when

Re: Raspberry Pi write cycles

2019-08-09 Thread ben via cctalk
On 8/9/2019 3:43 PM, Adam Thornton via cctalk wrote: And, you know, if you manage to cause my SD cards in those machines to fail, well, gosh, guess I'm out $10 or so for a new one. I'm not bothering to back up any of the stuff inside 'em, btw (so those of you using 'em, seriously, save your

Re: I'm sharing a toy

2019-08-08 Thread ben via cctalk
On 8/8/2019 12:26 PM, Warner Losh wrote: Even the crappiest of crap SD cards these days aren't that fragile. You'd need to swap on the order of GB/s to wear it out that fast. Most of the SD cards can handle hundreds of full drive writes. At 128GB, you're looking at needing to generate about

Re: I'm sharing a toy

2019-08-08 Thread ben via cctalk
On 8/8/2019 7:59 AM, Huw Davies via cctalk wrote: On 8 Aug 2019, at 15:18, Adam Thornton via cctalk wrote: https://mvsevm.fsf.net Currently, the TOPS-10 guest account (42,42) and the Unix v7 account dmr have no passwords. Just logged into TOPS-10 for the first time in many years! Far

Re: MULTIPROCESSING FOR THE IMPOVERISHED Part 1: a 6809 Uniprocessor

2019-08-06 Thread ben via cctalk
On 8/6/2019 6:38 AM, Norman Jaffe via cctalk wrote: I built a dual-6809 in the late '70s - it was a brand-new, exciting part - and we used the E part for exactly that reason. The system used memory that had an access time that was better than the 4x clock, so that each processor could run at

Re: Alphaservers for free in Athabasca, Alberta

2019-08-05 Thread ben via cctalk
On 8/5/2019 6:51 PM, Boris Gimbarzevsky via cctalk wrote: A mere 579 miles from Kamloops.  Unfortunately have to talk to my wife who thinks I have too many computers even though I've given away bulk of my DEC stuff.  Never got a chance to play around on Alpha as it came out during my Mac days.

Re: MULTIPROCESSING FOR THE IMPOVERISHED Part 1: a 6809 Uniprocessor

2019-08-05 Thread ben via cctalk
On 8/5/2019 1:40 AM, Steve Malikoff via cctalk wrote: Ben said Where are all the articles about a TTL designed computer? Yes I know about (Homebuilt CPUs ring) but that is mostly today. What about the Late 70's and Early 80's? Well there's the EDUC-8, based on the PDP-8 instruction set and

Re: MULTIPROCESSING FOR THE IMPOVERISHED Part 1: a 6809 Uniprocessor

2019-08-03 Thread ben via cctalk
Many were not published. A friend built a TTL computer based on the PDP-8 but no details were published. There was a design in the UK called the "weeny-bitter" in the Amateur Computer Club newsletters. Not sure how many got built... Information is scattered through the magazines. I think

Re: MULTIPROCESSING FOR THE IMPOVERISHED Part 1: a 6809 Uniprocessor

2019-08-02 Thread ben via cctalk
On 8/2/2019 11:15 AM, Liam Proven via cctalk wrote: 1993 article on building a multiprocessor 6809 box. http://www.bradrodriguez.com/papers/6809cpu.htm Read that page years ago.I have always like the 6800 CPU model.I have used that model for a 18 and 20 bit cpu design currently being bread

Re: Announcing Cadetwriter

2019-08-01 Thread ben via cctalk
On 8/1/2019 7:52 PM, Dave Babcock via cctalk wrote: The Cadetwriter flyer can be found at: https://www.dropbox.com/s/yhxq788j8g6j2sz/Cadetwriter%20Flyer.pdf?dl=0 Does it Backspace? Ben.

Re: Resurrecting integrated circuits by cooking them.

2019-07-26 Thread ben via cctalk
On 7/25/2019 1:08 PM, Jeffrey S. Worley via cctalk wrote: Does this mean that, like me scratching a bit at the package to expose enough nub of broken-off pin to get a blob of solder on to hold a new leg made of wire can theoretically be extended to shaving off the top of the package to expose

Re: Scanning question (Is destruction of old tech docs a moral crime?)

2019-07-22 Thread ben via cctalk
On 7/21/2019 8:07 PM, Guy Dunphy via cctalk wrote: BTW. I have three IBM 026 card punch machines as a future restoration project. But can I find a service manual? No. None online, only one for the later 028. And even if there was a PDF I expect it would be the usual terrible quality. Does

Re: Scanning Results

2019-07-21 Thread ben via cctalk
On 7/21/2019 9:04 AM, Guy Dunphy via cctalk wrote: Starting again with the clean full size scan, reduce to 1200 x 1620, (a good screen size) and 8 bit/px indexed. (Adequate for this page.) Saved file size: 339 KB. File: 7903_07_1200_8.png Umm I am running 800 x 600 here. I have gone

Re: Scanning question (Is destruction of old tech docs a moral crime?)

2019-07-21 Thread ben via cctalk
On 7/21/2019 4:16 AM, Joseph S. Barrera III via cctalk wrote: I'd suggest that in 2019 when bits are cheap and high-quality scanners nearly as cheap, "crappy quality digital image" is a bit of a straw man. Yes, I've seen plenty of barely-readable or practically unreadable scans, but they were

Re: Lots of Apple 1 computers @ VCF West

2019-07-06 Thread ben via cctalk
On 7/6/2019 7:59 PM, ED SHARPE via cctalk wrote: Not many collectors back when the Apple1 came out! While the CHEAP 6502 is remembered with the Apple we must not forget that the 16 pin 4K dram really made that computer work. Regardless of the architecture, 32 KB is needed to do any useful

Re: Lots of Apple 1 computers @ VCF West

2019-07-06 Thread ben via cctalk
On 7/6/2019 1:12 AM, Guy Dunphy via cctalk wrote: At 08:21 PM 5/07/2019 -0400, you wrote: You could be sitting on $400K-$1,000,000. That's the current range of decent-condition Apple 1 boards. I just _love_ being reminded of the circumstances of my NOT buying an Apple I, and what that

Re: gunkies.org is down or?...

2019-07-05 Thread ben via cctalk
On 7/5/2019 11:33 AM, Noel Chiappa via cctalk wrote: > From: Tomasz Rola > Is it really down? I suppose this is actually good news, in a way - someone must have been trying to use it, to notice that it was down! :-) So let me take this opportunity to appeal once again for people to

Re: "half-dollar"/"50 cent piece" Was: Recovering the ROM of an IBM 5100 using OCR

2019-07-02 Thread ben via cctalk
On 7/1/2019 11:54 PM, Fred Cisin via cctalk wrote: Pennies will never stop being minted--the members of Congress representing the state of Illinois would not stand for it. In spite of costing more to make them than they are worth. The same could be said for Congresmen. :)

Re: Latest Additions to the Virtual Warehouse of Computing, > Wonders Sale Inventory

2019-06-29 Thread ben via cctalk
On 6/29/2019 4:21 PM, Fred Cisin via cctalk wrote: An Imsai 8080 is s'posed to sell for $599 ($931 assembled) An Apple 1 is s'posed to sell for $666.66 A TRS-80 is s'posed to be $599.95, with monitor and cassette player. A 5150 is s'posed to be $1281, easily $1565 with base features, and up.

Re: OT: "half-dollar"/"50 cent piece" Was: Recovering the ROM of an IBM 5100 using OCR

2019-06-28 Thread ben via cctalk
On 6/28/2019 11:59 AM, Nemo Nusquam via cctalk wrote: On 06/28/19 13:18, Alan Perry via cctalk wrote (in part): One big problem with dollar coins is cash trays need to be redesigned for them. Maybe if the US got rid of the penny (like Canada has) there would be somewhere to put dollar coins in

Re: unix developed on 11/20 with 20 on panel or machine that just said pdp/11?

2019-06-21 Thread ben via cctalk
On 6/20/2019 6:20 PM, Paul Koning wrote: Don't you ALL wish the the 11 was 18 bits. Not looking at REAL 11 but the schematic, two bits would have not been too hard to add. You mean like a PDP-7 (the first Unix machine)? Nope, the * PDP 11 * from 1971. It used if I remember right a 16x1 RAM

Re: unix developed on 11/20 with 20 on panel or machine that just said pdp/11?

2019-06-20 Thread ben via cctalk
On 6/20/2019 9:58 AM, Jon Elson via cctalk wrote: On 06/20/2019 08:50 AM, Bill Gunshannon via cctalk wrote: V6 will run on an LSI-11/02 with 28KW of memory. 28 KW is 56 KBytes, which is the max on most non-MMU CPUs. Jon Don't you ALL wish the the 11 was 18 bits. Not looking at REAL 11

Re: One of the deeper dives into RISC vs CISC I've seen

2019-06-15 Thread ben via cctalk
On 6/15/2019 8:47 AM, Stefan Skoglund via cctalk wrote: With VAX 11/780 and S/360 involved ? I don't think so soo the Cyber series and 709(4) could be interesting. Well the early 1960's was the rise of BIG IRON that had REAL POWER and that led to people thinking about high level languages and

Re: What Makes a PDP-11/35 or 40 Tick?

2019-06-11 Thread ben via cctalk
On 6/11/2019 2:55 PM, Josh Dersch wrote: There are no banner ads on ycombinator, nor on Seth's site.  I suspect you have malware somewhere in your system or on your network. As froghorn leghorn once said. "That was a Joke son" ... - Josh I'll look at that site later, as finding any kind

Re: What Makes a PDP-11/35 or 40 Tick?

2019-06-11 Thread ben via cctalk
On 6/11/2019 11:11 AM, Seth Morabito via cctalk wrote: On Tue, Jun 11, 2019, at 9:22 AM, Liam Proven via cctalk wrote: On Tue, 11 Jun 2019 at 18:15, Seth Morabito via cctalk wrote: Oops! Clearly a boneheaded mistake on my part. Time to fix that ancient post of mine... Ancient? It was on

Re: Process accounting - did anyone ever use it?

2019-05-31 Thread ben via cctalk
On 5/31/2019 7:32 AM, Zane Healy via cctalk wrote: On May 30, 2019, at 2:08 PM, Charles Anthony via cctalk wrote: On Thu, May 30, 2019 at 10:31 AM Grant Taylor via cctalk < cctalk@classiccmp.org> wrote: (Credit the Quotas thread for prompting this.) Did anyone ever use process

Re: 11/93 Rebuild

2019-05-27 Thread ben via cctalk
On 5/27/2019 2:56 AM, Christian Corti via cctalk wrote: On Mon, 27 May 2019, Rod Smallwood wrote:   On an old XP box?  er neither will run My reply was meant as a hint. You should be able to find a dd-like tool for Windows yourself ;-) Either by using a old version of Cygwin (there are

Re: Pleas ID this IBM system....

2019-05-21 Thread ben via cctalk
On 5/21/2019 11:03 AM, Adrian Stoness via cctalk wrote: all systems have their advantages disadvantages it all depends on what your doing and designs u choose. personaly i think raised floor and tray above are best then u keep all ur power below away from ur data lines plus but then ur setup is

Re: "industrial" PDP-11

2019-05-17 Thread ben via cctalk
On 5/16/2019 12:14 AM, Paul Anderson via cctalk wrote: The standard 8s and 11s pretty much became "Industrial" when they were paired with the PDP-14 or PDP-16 industrial product lines.. I have several Industrial 8s and 11s. Like Al said, that part was just a change to red and blue, but it was

Re: HP 1000 E-series peripherals wanted

2019-05-14 Thread ben via cctalk
On 5/14/2019 11:17 AM, Alaric Nicoll via cctalk wrote: Hi I was wondering if there were any people who were wanting to sell any HP 1000 computer peripherals. Preferably disk oriented Such as a disk controller or a 79xx drive (I live in the UK so shipping may be an issue for larger things) I

Re: How were 32-bit minis built in the 70s/80?

2019-05-11 Thread ben via cctalk
On 5/11/2019 10:12 PM, Chuck Guzis via cctalk wrote: Personally, I preferred "the Naked Mini" Used for porn world wide.:) --Chuck

Re: How were 32-bit minis built in the 70s/80?

2019-05-11 Thread ben via cctalk
On 5/11/2019 9:28 PM, allison via cctalk wrote: On 05/11/2019 09:30 PM, ben via cctalk wrote: On 5/11/2019 6:28 PM, allison via cctalk wrote: Not all were 74181 based, Thats an early 1972 part and but 1975 it was already getting old though useful as it evolved to 74S and 74F series

Re: How were 32-bit minis built in the 70s/80?

2019-05-11 Thread ben via cctalk
On 5/11/2019 6:28 PM, allison via cctalk wrote: Not all were 74181 based, Thats an early 1972 part and but 1975 it was already getting old though useful as it evolved to 74S and 74F series. The 82s100 and 105 series were out there and even by 1980 the AMD 2900C series was getting long in the

Re: How were 32-bit minis built in the 70s/80?

2019-05-11 Thread ben via cctalk
On 5/11/2019 5:14 PM, Warren Toomey via cctalk wrote: I'm building my own 8-bit CPU from TTL chips, and this caused me to think: how were 32-bit minis built in the late 70s and early 80s? In particular, how was the ALU built? I know about the 74181 4-bit ALU, and I know (from reading A Soul of a

Re: Old CE manuals - bit savers books

2019-05-05 Thread ben via cctalk
On 5/5/2019 11:12 AM, Al Kossow via cctalk wrote: On 5/4/19 6:13 PM, ben via cctalk wrote: I was thinking it would be nice if bitsavers could do books. The Internet Archive is welcome to joust at that lightning rod. Well I found the 1st edition, I just wanted to check some things about C

Re: Old CE manuals - bit savers books

2019-05-04 Thread ben via cctalk
On 5/4/2019 5:01 PM, Bob Rosenbloom via cctalk wrote: Yes, Al will end up with them after I play with them. Bob Just don't PAPER train your dog now. :) I was thinking it would be nice if bitsavers could do books. I alot of computer books get changed every edition, so it would be nice to see

Re: Service for converting CD-ROMs into ISO files?

2019-05-04 Thread ben via cctalk
On 5/4/2019 8:15 AM, Paul Koning via cctalk wrote: thought a CD-ROM (data CD) *is* an ISO image. So I would expect all you need to do is make an image copy of the disk. On Unix systems that's trivial, just use the "dd" command to copy /dev/whatever to myfile.iso. paul Window users

Re: Raspberry Pi for vaxen turbochannel

2019-05-01 Thread ben via cctalk
On 4/30/2019 5:51 PM, Al Kossow via cctalk wrote: It occurs to me that the turbochannel slots have 4A each. It would be entirely possible to put a board like the raspberry Pi on a turbochannel card When all you have is a hammer, everything looks like a nail. But you can't beat the Z80 door

Re: What do to with an Internet-connected PDP-11?

2019-04-29 Thread ben via cctalk
On 4/28/2019 11:34 PM, Cameron Kaiser via cctalk wrote: Maybe it would be possible to get a text only browser running? I think Gopher would be a better fit, personally. That's easy to write, parse and display. That might be true, but what sites still provide that service. A web novel app

Re: "arx-149" computer. .. what Is?

2019-04-15 Thread ben via cctalk
On 4/14/2019 5:44 PM, Sam O'nella via cctalk wrote: Is there a specific reference you have for this? Sent from my Apple /c On Apr 14, 2019, at 2:16 AM, ED SHARPE via cctalk wrote: "arx-149" computer. .. what Is?thanks ed# I'd like to know too. I never could quite understand just

Re: %20Storage%20for%201/2"%20open%20reel%20tape

2019-04-09 Thread ben via cctalk
On 4/9/2019 4:40 PM, Fred Cisin via cctalk wrote: This particular sort of mess often occurs when somebody uses a character that isn't part of the basic set. The subject line mentioned half inch.  SOME program "did a favor" for its user, and changed "1 / 2" to a single character for one half.

Re: More stuff looking for a good home

2019-04-06 Thread ben via cctalk
On 4/6/2019 8:53 AM, Bill Gunshannon via cctalk wrote: Been a really long time since I had a UNIBUS system!! Amazing what turns up when your spring cleaning. Spring collecting. bill You lucky I don't drive, I'd rent a Garbage Truck and do DUMPSTER collecting. This week, 3 8's two 11's

Re: Yes there is a PDP 10 front panel and Kenbak on Ebay

2019-04-05 Thread ben via cctalk
On 4/5/2019 10:06 AM, Fred Cisin via cctalk wrote: What I want to know is, how do front panels of historic computers so often get separated from the rest of the computer? Could be just storage problems. The main computer here, racks of stuff there, cables and panel there, and things get lost

Re: Not DEC related but still hoping for some help: Problems w/ LJ 4+ Printer

2019-04-03 Thread ben via cctalk
On 4/3/2019 9:44 AM, Jon Elson via cctalk wrote: First, since you have not checked with another cartridge, is to examine the corona wires and/or "combs" on the cart. Sometimes the wires break at one end.  Also, toner spills could short it out, I've had that before.  Bent contacts on the cart

Re: Byte Magazine

2019-03-29 Thread ben via cctalk
On 3/29/2019 3:37 PM, Nemo Nusquam via cctalk wrote: On 03/29/19 14:08, Liam Proven via cctalk wrote: On Fri, 29 Mar 2019 at 19:01, ben via cctalk wrote: I have been trying to read the Dr Dobbs PDF scans and a few other PDF's. They seem to work only with the NAME BRAND pdf reader. Of course I

Re: Byte Magazine

2019-03-29 Thread ben via cctalk
On 3/29/2019 12:18 PM, Hagstrom, Paul wrote: Perhaps an obvious thing to say, but I'm sure others who have encountered this would appreciate your efforts if you were to re-scan these things or convert existing scans from the format you are having difficulty with into a format that is less

Re: Byte Magazine

2019-03-29 Thread ben via cctalk
On 3/29/2019 4:57 AM, Will Cooke via cctalk wrote: In a previous thread I asked for a couple of specific pages from Byte magazine, which I got (thanks to all, especially Peter, for helping out!) But that brings up a bigger issue (no pun intended.) About a year ago I found the Byte scans on

Re: PDP-8 signed overflow detection - Apollo guidace computer

2019-03-26 Thread ben via cctalk
On 3/25/2019 7:27 PM, Charles Dickman via cctalk wrote: On Mon, Mar 25, 2019 at 1:26 AM Kyle Owen via cctalk wrote: All this to fix a ~45 year old bug in Spacewar! where a ship's velocity overflows, causing the ship to "bounce" off of nothing. I would have figured it was bouncing off a

Re: Only never in Canada - dumb terminals - video tex

2019-03-24 Thread ben via cctalk
On 3/24/2019 7:15 PM, Brent Hilpert via cctalk wrote: Like this?: http://madrona.ca/e/telidon/index.html It was in a surplus store,So I expect it was parts from some larger device. This was in Vancover about 1990 ish. Can't say I bought it, it was a donation, and I don't know the

Re: Only never in Canada - dumb terminals - video tex

2019-03-24 Thread ben via cctalk
On 3/24/2019 10:27 AM, Mike Stein via cctalk wrote: And I have some in Toronto; Falco, ADM-11 and bits & pieces. Did anyone out there (In Canada) buy the surplus VideoTex terminals, I saw Many Many years ago. Ben.

Re: Only never in Canada - dumb terminals

2019-03-23 Thread ben via cctalk
On 3/23/2019 10:07 AM, Mike Stein wrote: As to RS-232, it can provide TTL or 0-3.3V 'pseudo-RS-232' which usually works in my experience, but if you need 'true' RS-232 there are tiny TTL<>RS-232 adapters on eBay for < $2.00 But $80 shipping over night to canada with my luck. I believe Rich

Re: Only never in Canada - dumb terminals

2019-03-23 Thread ben via cctalk
might be more useful to a lot of people on the list. TTY's and service still can be found here, if the web page can be believed. http://www.johnwhitney.com/misc/paul-rtty.htm *Van:* cctalk namens ben via cctalk *Verzonden

Re: Only never in Canada - dumb terminals

2019-03-23 Thread ben via cctalk
On 3/23/2019 1:18 AM, Adrian Stoness wrote: what end of canada its a big country On Sat, Mar 23, 2019 at 2:07 AM ben via cctalk <mailto:cctalk@classiccmp.org>> wrote: I am building a project that needs to use a Stand alone dumb terminal like a VT 52 or Similar. Alas I can't

Only never in Canada - dumb terminals

2019-03-23 Thread ben via cctalk
I am building a project that needs to use a Stand alone dumb terminal like a VT 52 or Similar. Alas I can't find any low cost Hardware Solutions here in Canada. Low cost with shipping under is $150 Canadian for me.Software terminal emulation is just a stop gap fix. Any ideas out there. Even a

Re: Pioneers of computing

2019-03-12 Thread ben via cctalk
On 3/11/2019 10:29 AM, Jon Elson wrote: On 03/11/2019 02:35 AM, ben via cctalk wrote: IBM 360 32 bits 16 word reg file - 16 bit word. While some 360 models had a hardware architecture of 8, 16, or even 64 bits, all of the 360s (except the model 20, which was not really a 360) had 16 32-bit

Re: Parts source

2019-03-11 Thread ben via cctalk
On 3/11/2019 8:26 PM, Will Cooke via cctech wrote: This may or may not be new or useful to anyone here, but I came across this website by accident today. They have a considerable selection of rather hard to find parts for old home computers, game consoles, and even arcade machines. Figured

Re: Pioneers of computing

2019-03-11 Thread ben via cctalk
On 3/10/2019 9:11 PM, Will Cooke via cctalk wrote: I have seen some claims that this was the first microprocessor -- although not a single chip https://en.wikipedia.org/wiki/Central_Air_Data_Computer Will I would say it was JUST too early to count as valid microprocessor. I expect they all

Re: Pioneers of computing

2019-03-10 Thread ben via cctalk
On 3/10/2019 7:30 PM, Guy Dunphy via cctalk wrote: Here is a little bit of info on it: http://www.vintagecalculators.com/html/ti_cal-tech1.html That's fascinating, thanks. I'd never heard of it. The Intel 4004 came out in 1971. https://en.wikipedia.org/wiki/Intel_4004 I'd understood that

Re: Pioneers of computing

2019-03-10 Thread ben via cctalk
On 3/10/2019 3:18 PM, Murray McCullough via cctalk wrote: Back in 1965 Jack Kilby, Jerry Merryman and James Van Tassel at texas Instruments created an integrated circuit designed to replace the calulator. Historians, though not all, credit this development as the beginning of the

Re: OT: Phone museum seeks new owner

2019-02-20 Thread ben via cctalk
On 2/19/2019 2:14 PM, geneb via cctalk wrote: This message brought to you by the Totalitarian Touch Tone Terrorists(tm). g. How ever SMART PHONES have taken OVER. AI's rule the world. Evil computer laugh!

Re: EmuVR & videogames & monitors...

2019-01-17 Thread ben via cctalk
On 1/17/2019 4:20 PM, Noel Chiappa via cctalk wrote: > From: Zane Healy > Paper is an archival medium If you want archival, you really need to go the 'baked clay tablet' approach.. :-) Noel Sure, and have Smokey the Bear catch you. I can not think of any real archival medium.

Re: ELTRAN THE COMPILER ANY DOCS? (NOT THE SEMICONDUCTOR STUFF!)))

2019-01-13 Thread ben via cctalk
On 1/13/2019 2:06 PM, Chuck Guzis via cctalk wrote: Being an old hard-of-seeing guy myself, I much prefer mixed-case to all-caps. All caps destroys the "shape" of words. Where is the $%!@ codepage for the ASR-33. Get all caps with a REAL keyboard and better text (with a new ribbon) than a

Re: PDP-11 BETTER

2019-01-12 Thread ben via cctalk
On 1/12/2019 4:45 PM, allison via cctalk wrote: The 6809 (hitachi 63B09) are about as close to PDP11 in general structure and instruction set and could boogy.   The were a cusp 16 bitter (not really but close). The 8088/86 was not wonderful, and what came after had all the side baggage to not

Re: Interest in a DiscFerret?

2019-01-10 Thread ben via cctalk
On 1/10/2019 7:41 PM, Chuck Guzis via cctalk wrote: On 1/10/19 5:16 PM, Chris Pye via cctalk wrote: There is a 13 sector version of ADTPro. All you need is a working Apple II or IIe with a floppy drive and serial card (or ethernet card). It can even bootstrap the Apple into 13 sector DOS 3.2

Re: OT RE: Bogus "account hacked" message

2019-01-09 Thread ben via cctalk
On 1/10/2019 12:19 AM, Dave Wade via cctalk wrote: I was going to say that permanent blocks on IP addresses seems fruitless. I assume that BotNets are compromised end user machines, and that the end users that have them are on standard dynamic IP address, so when some one gets one of your

Re: Teaching Approximations (was Re: Microcode, which is a no-go for

2019-01-08 Thread ben via cctalk
On 1/8/2019 6:24 PM, dwight via cctalk wrote: There is an algorithm to calculate any digit of PI as long as it is in HEX ( or base 16 ). So far no one has been able to do this in a decimal system. It would seem that out binary computers were close to right in the first place. Dwight What is

Re: OT? Upper limits of FSB

2019-01-08 Thread ben via cctalk
On 1/8/2019 3:51 PM, Guy Sotomayor Jr via cctalk wrote: Some architectures (I’m thinking of the latest Intel CPUs) have a small loop cache whose aim is to keep a loop entirely within that cache. That cache operates at the full speed of the instruction fetch/execute (actually I think it keeps

Re: so far off topic - capatob - saratov2 computer Russsian pdp8?

2019-01-07 Thread ben via cctalk
On 1/7/2019 8:20 AM, allison via cctalk wrote: snip... made though more likely 74F, AS, or LS variant and of course CMOS 74ACT (and cmos friends) as I just bought a bunch.  Dip is getting harder to get but the various SMT packages are easy.  Prices for 10 or more of a part are cheap to cheaper

Re: off topic - capatob - saratov2 computer Russsian pdp8? HELP

2019-01-06 Thread ben via cctalk
On 1/6/2019 12:24 PM, allison via cctalk wrote: The small beauty of being there...   FYI back then (1972) a 7400 was about 25 cents and 7483 adder was maybe $1.25.  Least that's what I paid. Checks my favorite supplier. $1.25 for 7400 and $4.00 for a 7483. It has gone up in price. Allison

Re: Motorola M88K books & user manuals (looking for)

2019-01-01 Thread ben via cctalk
On 1/1/2019 8:58 AM, Carlo Pisani via cctalk wrote: hi on DTB we are designing a RISC-ish CPU, code name "Arise-v2"(1). We are using the MIPS R2K and the RISC-V as the reference. In the end, it will be implemented in HDL -> FPGA. The page on DTB is related to a software emulator (written in C)

Re: More old stuff incoming

2018-12-21 Thread ben via cctalk
On 12/21/2018 8:09 PM, Zane Healy via cctalk wrote: For the DPS-8, there really is only one option, and sadly GCOS-8 isn’t available, only Multics. Still it’s pretty cool to finally be able to use Multics, and it’s a lot more user friendly than GCOS-8 (I used to be a Systems Analyst at a

Re: Origin of 'Straight 8' name

2018-12-21 Thread ben via cctalk
On 12/21/2018 8:46 PM, John Ames via cctalk wrote: I'd definitely be interested to hear if the DECheads on this list know the specifics, but I'd gathered that it came about once other models were introduced and the need arose to differentiate between, say, a PDP-8/e and a "straight" (i.e.

Re: Origin of 'Straight 8' name

2018-12-21 Thread ben via cctalk
On 12/21/2018 11:37 AM, Chuck Guzis via cctalk wrote: Back in the first half the 20th century, there were various configurations of 8-cylinder internal combustion engines. We're all familiar with the V-8, but there were inline 8-cylinder designs used primarily on luxury cars, making for a

Re: More old stuff incoming

2018-12-18 Thread ben via cctalk
On 12/18/2018 9:53 PM, Jason Howe via cctalk wrote: Indeed. Just this year, we pulled our Pentium Pro box off our museum shelf and did a fresh install of NT4 for a faculty member and their scientific instrument. --Jason Z80's and 8 bit IBM pc's are making a come back if you dig on the

Re: More old stuff incoming

2018-12-18 Thread ben via cctalk
On 12/18/2018 2:08 PM, Zane Healy via cctalk wrote: On Dec 18, 2018, at 11:36 AM, Electronics Plus via cctalk wrote: I talked to a recycler today, who said he told his workers to throw out 2000 Model F keyboards last week, but he doubts they did it. I also asked him about 8088, 2086, and

Re: Core memory emulator using non volatile ram.

2018-12-16 Thread ben via cctalk
On 12/16/2018 8:00 PM, allison via cctech wrote: In the end, current generation CMOS ram is the easy out, battery is small, cost is small,  and produces much less of the heat that is killer to systems.   The only reason to do that is core cost big if you can find it for your machine.  I can

Re: Looking for a home for most issues of BYTE Magazine

2018-12-15 Thread ben via cctalk
On 12/15/2018 12:54 AM, Randy Dawson via cctalk wrote: Zane, your comments are appreciated. I have paid for subscriptions to ebooks that cost ~10 a month, and they are OK for text, but when a schematic comes up, it sucks (scribd) you cant zoom or increase the resolution. I also follow you on

Re: p112

2018-12-04 Thread ben via cctalk
On 12/4/2018 1:17 PM, Tony Nicholson via cctalk wrote: Hello David I saw your posting on the cctalk mailing list regarding RSX180. It is Hector Peraza that's been tinkering with this. He intends making the full source-code available via SourceForge or GitHub but is still working on

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