[cctalk] Re: Me again! RSX-11M manual set

2025-08-02 Thread Fred Cisin via cctalk
Ed doesn't have that manual set: *From:* c...@groups.io *On Behalf Of *Scott Johnson via groups.io *Sent:* Friday, June 14, 2024 6:52 PM *To:* c...@groups.io *Sent:* Friday, June 14, 2024 6:52 PM All- With sadness, I must report that Ed Sharpe, KF7RWW, passed away 1 June 2024. He was 72. Ed

[cctalk] Re: Chuck Guzis -- Equipment and Archive

2025-07-31 Thread Fred Cisin via cctalk
ts. [On behalf of my sister]: Are you also dealing with his tubas? -- Grumpy Ol' Fred ci...@xenosoft.com XenoSofthttp://www.xenosoft.com 2245 Carquinez Avenue (510) 234-3397 ElCerrito, CA 94530 On Thu, 31 Jul 2025, Chuck Guzis via cct

[cctalk] Re: Scada computers and remote terminal units

2025-07-25 Thread Fred Cisin via cctalk
Also, way back, there was a case where a SCADA manufacturer thought some of their gear was being bought for the trans-Siberia pipeline, and couldn't be sold for that under trade restrictions. Somebody at that company got in touch with a contact at the CIA, and asked if they wanted to insert a "

[cctalk] Re: Sad news re: Chuck Guzis

2025-07-24 Thread Fred Cisin via cctalk
n his good work and his good attitude. We obviously should try, but we aren't as knowledgeable, and don't have attitudes comparable to his. He was always GENTLE at telling any of us that we were WRONG. He is missed. -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Another 780 backplane story

2025-07-04 Thread Fred Cisin via cctalk
Came in with a briefcase that contained his “tools”, which was a big brush that you would use for light plaster work and a wood mallet. He proceeded to sweep the brush across the wirewrap backplane and a wire cam loose. He replaced the wire and all was good again. I never found out what the mall

[cctalk] Re: Another 780 backplane story

2025-07-04 Thread Fred Cisin via cctalk
On Fri, 4 Jul 2025, Wayne S via cctalk wrote: This is similar to an IBM mainframe story i have. IBM 370 wouldn’t IMPL. CE and FE couldn’t figure it out. They called in a “Special Consultant.” I Came in with a briefcase that contained his “tools”, which was a big brush that you would use for ligh

[cctalk] Re: Is there a more modern replacement for paper tape punch/reader

2025-06-26 Thread Fred Cisin via cctalk
On Thu, 26 Jun 2025, ste...@malikoff.com steven--- via cctalk wrote: Sure, by all means go for it. If you can make some sort of robust circumferential clamp to prevent axial sliding of the roll (think of a rolled up poster with one conical (convex) end and the other concave) due to imperfect ro

[cctalk] Re: Is there a more modern replacement for paper tape punch/reader

2025-06-24 Thread Fred Cisin via cctalk
On Wed, 25 Jun 2025, The Doctor via cctalk wrote: Just thinking out loud - how well would running one of those paper rolls through a band saw to make smaller, skinny enough rolls work? Here is some discussion of cuttingrolls of paper on a cardboard tube. That thread started with turning a 48 i

[cctalk] Re: Is there a more modern replacement for paper tape punch/reader

2025-06-22 Thread Fred Cisin via cctalk
If toggling the laser isn't doable, then you could use a shutter. If the shutter can't handle the heat, then a mirror that deflects the beam. On Sun, 22 Jun 2025, Wayne S via cctalk wrote: I think you could get around any potential damage by running the tape between 2 thin flat pieces of me

[cctalk] Re: Bill Atkinson

2025-06-09 Thread Fred Cisin via cctalk
e one who said, "The Mac was supposed to have four major software packages; but by the time that it was released, those had become MacWrite, MacPaint, MacWrite, and MacPaint" -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: TRS-80 BASIC oddity

2025-05-28 Thread Fred Cisin via cctalk
e &H notation; prior to that, "Level 2" BASIC did not have a notation that the numerals were HEX, so you had to write all numbers in base 10. -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: formatting (Was: IBM 5155

2025-05-20 Thread Fred Cisin via cctalk
t the nature of the problem seems to be. -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: IBM 5155

2025-05-20 Thread Fred Cisin via cctalk
On Tue, 20 May 2025, Fred Cisin via cctalk wrote: Colby created an after-market case for 5150, that was smaller than Compaq. https://vintage-computer.fr/tag/colby/

[cctalk] Re: IBM 5155

2025-05-20 Thread Fred Cisin via cctalk
7;s for whether they could handle SD/FM. Inquiring minds want to know. :-) The National Enquirer (who made popular the phrase: "Inquiring minds want to know") had little or no coverage of microcomputers. THOSE inquiring minds did not want to know. -- Grumpy Ol' Fred ci...@xenosoft.com http://www.xenosoft.com

[cctalk] Re: Mac SE disk cleaning

2025-05-03 Thread Fred Cisin via cctalk
On Sat, 3 May 2025, Brian Knittel via cctalk wrote: Passing on a request: anyone know of a way to erase user data off a Mac SE hard disk that will leave the disk and Mac OS intact? The machine works and could go to a new home but has privileged medical data on it so just deleting files isn’t s

[cctalk] Re: Philips P3800 key lock swtch

2025-04-10 Thread Fred Cisin via cctalk
that can be used to nibble the cut down. -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Philips P3800 key lock swtch

2025-04-10 Thread Fred Cisin via cctalk
On Thu, 10 Apr 2025, dwight via cctalk wrote: Once you have the lock off you can take it to a locksmith and have a new made. That is what I did for my computer. Dwight Tony has removed the lock. It is not a keyway that a regular locksmith would have the right blank!

[cctalk] Re: Philips P3800 key lock swtch

2025-04-09 Thread Fred Cisin via cctalk
ck key would. -- Grumpy Ol' Honda Fred ci...@xenosoft.com

[cctalk] Re: Why I am not worried about AI taking over the world!

2025-04-09 Thread Fred Cisin via cctalk
ot a major, nor even a full course, but discussed quite a bit in "Information Retrieval" classes -- Grumpy Ol' Fred ci...@xenosoft.com MLIS (Master of Library and INFORMATION Studies), 1991

[cctalk] Re: Philips P3800 key lock swtch

2025-04-08 Thread Fred Cisin via cctalk
's keyways. BEST FM? and JKLM? -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Philips P3800 key lock swtch

2025-04-08 Thread Fred Cisin via cctalk
ooves and/or not having to mill them deeply. -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Philips P3800 key lock swtch

2025-04-07 Thread Fred Cisin via cctalk
ws that it is not a fully paracentric keyway. (where "ridges" and "valleys" of the milling of the keyway would cross the center line, making it impossible to insert a very thin flat piece of metal) -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Philips P3800 key lock swtch

2025-04-07 Thread Fred Cisin via cctalk
On Mon, 7 Apr 2025, donald donaldwhittemore.com via cctalk wrote: Lishi tools can decode the bitting. Surprised the locksmith did not use them. Just need to identify the keyway style. https://covertinstruments.com/collections/lishi-tools Tony has been unable to find a blank that fits the key

[cctalk] Re: Why I am not worried about AI taking over the world!

2025-04-05 Thread Fred Cisin via cctalk
a friend asked me whether ChatGPT designed and planned DOGE ?

[cctalk] Re: Why I am not worried about AI taking over the world!

2025-04-05 Thread Fred Cisin via cctalk
In those days, FORTRAN IV was handy as a "portable" language just because it was the one language (other than COBOL) available *everywhere*. It could be used as a sort of "high level assembler" too. "FORTRAN --"the infantile disorder"--, by now nearly 20 years old, is hopelessly inadequate fo

[cctalk] Re: FD-55B head loose

2025-04-05 Thread Fred Cisin via cctalk
, who weren't around before Y2K, now call half-height drives, "Full height", and use "half-height" to refer to quarter-height or other slim drives. Were all of the FG (and even the G) dual speed, or did some rely on a controller supporting a 300K bps tran

[cctalk] Re: Why I am not worried about AI taking over the world!

2025-04-01 Thread Fred Cisin via cctalk
correct answer. Perhaps, ask it to do it in Level I BASIC, and fit in 4K, . . . -- Grumpy Ol' Fred ci...@xenosoft.com On Tue, 1 Apr 2025, Bill Gunshannon via cctalk wrote: And now I have to clean the coffee out of my keyboard I asked the question with slightly diffe

[cctalk] Re: Wanted : Philips PSU-B3 (or -B4?) power supply for the P3800

2025-03-30 Thread Fred Jan Kraan via cctalk
ndex.html Not exactly what you asked for, but related. Fred Jan

[cctalk] Re: FD-55B head loose

2025-03-24 Thread Fred Cisin via cctalk
hether this means it just supports 2 write currents or also 2 speeds I am not sure. and, THAT is a better wording of my question -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: IDT 49C402BG84 Pinout?

2025-03-14 Thread Fred Cisin via cctalk
:-) Jon I don't think that there is a cause for thanking me for somewhat..we all getting older and the memory fades all the time. I don't think it fades, just slower access time. un-refreshed dynamic RAM, particularly wetware, fades, slows down, and has more errors, including loss of access t

[cctalk] Re: RS232 - parallel modems!?

2025-02-09 Thread Fred Cisin via cctalk
it was. 'course, you could accomplish the same task with an external parallel to serial printer buffer, and come in through the serial port. -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Open source a panacea?

2025-02-03 Thread Fred Cisin via cctalk
On 2025-02-03 5:06 p.m., Chuck Guzis via cctalk wrote: Really? The x86 family does indeed have stack-based addressing. In particular, The BP register holds the base of the stack frame and the assumed segment is SS. Even the lowly 8085 has some (undocumented) nod toward stack addressing. On

[cctalk] Re: Open source a panacea?

2025-02-03 Thread Fred Cisin via cctalk
On Feb 3, 2025, at 2:08 PM, Donald Whittemore via cctalk wrote: I am an old mainframe guy. I could give you my COBOL deck of cards or the compile listing. You could pour through the code looking for nefarious/malicious code. I then hand you the object deck. You have no idea if it matches the

[cctalk] Re: RS232 then and now

2025-02-02 Thread Fred Cisin via cctalk
On Sun, 2 Feb 2025, Steve Lewis via cctalk wrote: Didn't the original TRS-80 have a kind of screw up, where the tape and display connector were the same? Actually, years later the Atari Lynx had a similar mishap - the power charger and headphone jack port look identical? (something like that, an

[cctalk] Re: RS232 then and now

2025-02-01 Thread Fred Cisin via cctalk
Another pet gripe of mine is calling the old 50-way SCSI/etc. connector a "Centronics" connector,regardless of application or number of connections. I prefer to refer to them as "blue ribbon" connectors, developed by Amphenol in 1950 and used extensively in commercial telephone systems long before

[cctalk] Re: RS232 then and now

2025-02-01 Thread Fred Cisin via cctalk
n Interface. TRS80 also had more of the same issues of multiple same connectors for different purposes, such as Power/Video/Cassette Sorry, if I have errors in this (unrefreshed dynamic wetware memory) -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Microsoft history

2025-01-31 Thread Fred Cisin via cctalk
On Fri, 31 Jan 2025, Murray McCullough via cctalk wrote: Microsoft, or is it Micro-Soft or MICROSOFT, is a 50 yr. old trans-national corporation. Whether it has been good or not-so-good for society is debatable but on the financial-side its been very kind to investors(the earliest ones anyways).

[cctalk] Re: RS232 then and now

2025-01-31 Thread Fred Cisin via cctalk
On Fri, 31 Jan 2025, David Wade via cctalk wrote: Lets look at some of the other pins:- RTS/CTS   - Request to send/clear to send - Hardware flow control. DTR/DSR - Is comms up and running RI  - Ring Indicator - a call has arrived TCK/RCK - Used for timing on synchronous links so BI-

[cctalk] Re: RS232 then and now

2025-01-31 Thread Fred Cisin via cctalk
On Fri, 31 Jan 2025, Chuck Guzis via cctalk wrote: As far as RS232 and history, I submit that current-loop has more of a place in telegraphy, as it's far more suited to long distances and is less susceptible to signal noise. Many early 1970s serial interfaces offered the choice between 20ma or

[cctalk] Re: RS232 then and now

2025-01-31 Thread Fred Cisin via cctalk
On Fri, 31 Jan 2025, Frank Leonhardt via cctalk wrote: And for amusement, someone wrote in the PCW saying they'd heard a salesperson at Radio Shack trying to convince a punter that RS is RS232 stood for Radio Shack. I have seen a Radio Shack store manager (Albany, California) say exactly that

[cctalk] Re: AI? Really?

2025-01-27 Thread Fred Cisin via cctalk
One factor, gravity may have been .5 G back then. On Mon, 27 Jan 2025, Adrian Godwin wrote: It may have been only 4.9 m/s^2 but it would still be 1.0 x the acceleration due to gravity, wouldn't it ? And, THAT is why nobody noticed any change, the Gravitometer continued to show "1.0"

[cctalk] Re: AI? Really?

2025-01-27 Thread Fred Cisin via cctalk
On Tue, 21 Jan 2025, ben via cctalk wrote: One factor, gravity may have been .5 G back then. On Sun, 26 Jan 2025 at 14:54, Alexander Schreiber via cctalk wrote: And isn't it reassuring to notice that nobody has turned off the gravity by accident? On Mon, 27 Jan 2025, Liam Proven via cctal

[cctalk] Re: AI? Really?

2025-01-25 Thread Fred Cisin via cctalk
Because of the simple fact that nobody ever updates the subject line, that can justr as easily be accomplished by filtering out the specific subject. On Sat, 25 Jan 2025, cz via cctalk wrote: Whelp, it's time to mute cctalk for a few weeks. See you all in Feb!

[cctalk] Re: AI? Really?

2025-01-25 Thread Fred Cisin via cctalk
He [Columbus[ did not prove that the earth is round; that would have to wait for Magellan. On Sat, 25 Jan 2025, Bill Gunshannon via cctalk wrote: That was never his intention. No argument. I was merely putting in a dig at the education system in USA, where "Columbus proved the earth was roun

[cctalk] Re: AI? Really?

2025-01-24 Thread Fred Cisin via cctalk
On Fri, 24 Jan 2025, Frank Leonhardt via cctalk wrote: The theory that the earth is flat is clearly disproven. Aristotle worked it it was basically spherical, yet crackpots believe it's flat to this day - often because their scripture said otherwise. A simple home experiment: Find two points,

[cctalk] Re: AI? Really?

2025-01-21 Thread Fred Cisin via cctalk
On Tue, 21 Jan 2025, David Wade via cctalk wrote: My doctor didn't believe me when I said that of course I was heavier when she weighed me in basement clinic, rather than the first floor(usa)/ground floor(UK)... At least take your shoes off to reduce the weight. But, hold them in your hand, so

[cctalk] Re: AI? Really?

2025-01-21 Thread Fred Cisin via cctalk
An increase in acceleration (third derivative positive) would account for increased gravity. :-) On Tue, 21 Jan 2025, wrco...@wrcooke.net wrote: Geez! All this pseudo science! All ya gotta do is follow the REAL science! Of course gravity has increased since there was nothing here! Now we h

[cctalk] Re: AI? Really?

2025-01-21 Thread Fred Cisin via cctalk
One factor, gravity may have been .5 G back then On 2025-01-21 10:54 a.m., Paul Koning wrote: Uh, what? How would the earth surface gravity be that much different? "Citation needed" as Wikipedia would say. On Tue, 21 Jan 2025, ben via cctalk wrote: https://en.wikipedia.org/wiki/Autodynami

[cctalk] Re: AI? Really?

2025-01-19 Thread Fred Cisin via cctalk
s was at a seminar with Lofti Zadeh ("Fuzzy Logic") After discussing combinatorial Fuzzy Logic, my prof asked, "Isn't that just probability?" Zadeh responded, "Probably." -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: AI? Really?

2025-01-19 Thread Fred Cisin via cctalk
On Sun, 19 Jan 2025, ben via cctalk wrote: TTL??? Old relays work better! Thinking of some sort of robot I read about from 1960's book. Marvin: And then of course I've got this terrible pain in all the diodes down my left side. Arthur Dent: Really. Marvin: Oh, yes. I mean, I've asked for th

[cctalk] Re: Try Algol 68 on Windows

2025-01-14 Thread Fred Cisin via cctalk
tween leaving their deck of cards on the ocunter, and picking up output hours or day later. First assignment was "write a program to display YOUR name." Freeform input would indeed be a lot easier for beginners! Formatting the input was a struggle for some. (obviously, only at the very beginning) -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Try Algol 68 on Windows

2025-01-14 Thread Fred Cisin via cctalk
rograms in Fortran77. -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Try Algol 68 on Windows

2025-01-14 Thread Fred Cisin via cctalk
t;Shugart Technology" (1978). Xerox informed him that their purchase of Shugart Associates included the name (trademark), and he could not use his name. They renamed the company "Seagate Technology". Lesson: do not name your company after yourself! If/when you sell the

[cctalk] Re: Try Algol 68 on Windows

2025-01-13 Thread Fred Cisin via cctalk
77, Fortran 90, or Fortran 2025 (which I have never seen) -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Print chain for 1403

2024-12-23 Thread Fred Cisin via cctalk
On 2024-12-23 19:32, Donald Whittemore via cctalk wrote: Well, I have proof IBM used the Field Engineer term. See the punch card used to report an Incident. https://www.ibmjunkman.com/cards/?Holder=774&Img=1 On Mon, 23 Dec 2024, Paul Berger via cctalk wrote: It says "Field Engineering Inciden

[cctalk] Re: Old mainframe humor

2024-12-10 Thread Fred Cisin via cctalk
/webdocs/beginning.pdf New IBM OS www.myimagecollection.com/webdocs/newibmos.pdf Thank you for the info on undocumented instructions. But, to what extent can we count on second-source and after-market manufacturers to implement them in compatable forms? -- Grumpy Ol' Fred

[cctalk] Re: Philips P2000C disk format

2024-12-09 Thread Fred Cisin via cctalk
track 79, 39, or 34 of the second side going down. Some formats fill the first track of the first side, and then have a track on the second side. Some formats treat both track of each cylinder as if it were one large track. Skew can bridge both sides of the cylinder. Some formats will come up with even weirder approaches. -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] A bit of humor to test the list

2024-12-03 Thread Fred Cisin via cctalk
They seem to have upgraded the video output! I found the picture on the front page of this web site humorous. It's a place that sells old Jeep parts. Note the computer surfing the web. https://www.kaiserwillys.com/

[cctalk] Re: The 8086

2024-11-16 Thread Fred Cisin via cctalk
how long was it before a spreadsheet program and other word processors were available? So, Intel went with the "quick fix" rather than the long-term good. -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Running DOS executables on other versions of DOSRe: Looking for Sharp PC-5000 disk drive (CE-510F or possibly MZ-80B)

2024-11-05 Thread Fred Cisin via cctalk
. Elephant's marketing was colorful, at a time when all others were very staid. -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Running DOS executables on other versions of DOSRe: Looking for Sharp PC-5000 disk drive (CE-510F or possibly MZ-80B)

2024-11-04 Thread Fred Cisin via cctalk
ained about a problem writing floppies under UCSD Pascal on a Terak and their answer was to buy Terak Brand Floppies. Sometimes, it is worth having one, just so that you can tell their "support" that their own brand doesn't work either. -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Running DOS executables on other versions of DOSRe: Looking for Sharp PC-5000 disk drive (CE-510F or possibly MZ-80B)

2024-11-04 Thread Fred Cisin via cctalk
ve! Probably bulk erase, with a degausser, then do it again, then do it with a different degausser? If they still won't work (after eliminating drive as problem), then staple them. -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Running DOS executables on other versions of DOSRe: Looking for Sharp PC-5000 disk drive (CE-510F or possibly MZ-80B)

2024-11-04 Thread Fred Cisin via cctalk
t 350 RPM (at 360 RPM, unless the data transfer rate is switched to 300K bps, each track will be too long to fit in a single revolution) -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Running DOS executables on other versions of DOSRe: Looking for Sharp PC-5000 disk drive (CE-510F or possibly MZ-80B)

2024-11-04 Thread Fred Cisin via cctalk
On Sun, 3 Nov 2024, Steve Lewis via cctalk wrote: Non-descript 5.25 DS/DD (they don't format as 1.2M disk using a 1.2 5.25" drive, so I'm pretty sure they are actual 360KB disks). That said, I haven't really fully confirmed if it's a 1.2M drive. TEAC FD-55GFR 142-U, because I haven't actuall

[cctalk] Re: Running DOS executables on other versions of DOSRe: Looking for Sharp PC-5000 disk drive (CE-510F or possibly MZ-80B)

2024-11-03 Thread Fred Cisin via cctalk
with some bad sectors marked when using FORMAT.COM (whereas on other systems, the same disk would format fine with no bad sectors). Teac FD-55GFR is a 1.2M drive that can also be used as a 720K 5.25" drive. (FD-55G is 1.2M; FD-55F is 720K) -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: undocumented instructions including HCF [was: System 360 question]

2024-11-01 Thread Fred Cisin via cctalk
The IBM monochrome monitor could be damaged by putting it into an unsupported mode. The idea of a command that would brick the system is popular. It may be possible, but it's very difficult to track down the details from FOAFs. -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Running DOS executables on other versions of DOSRe: Looking for Sharp PC-5000 disk drive (CE-510F or possibly MZ-80B)

2024-10-29 Thread Fred Cisin via cctalk
On Tue, 29 Oct 2024, Chuck Guzis via cctalk wrote: The location of track 0 is radically different in the 96 tpi and 100 tpi conventions--there's about a 6 track offset. 100 tpi drives were also spec-ed as being 77 track (like their 8" relatives). Are the tracks offset from one side of a disk t

[cctalk] Re: Running DOS executables on other versions of DOSRe: Looking for Sharp PC-5000 disk drive (CE-510F or possibly MZ-80B)

2024-10-29 Thread Fred Cisin via cctalk
cylinder drives. I use a bulk-erased disk, format and write on the 80 cylinder drive then copy it to a fresh 40 cylinder disk on the target machine. Never had any problems doing that. Shouldn't ever have problems with it. But, if the disk is damaged, would the wider track be able to survive a little more damage? -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Running DOS executables on other versions of DOSRe: Looking for Sharp PC-5000 disk drive (CE-510F or possibly MZ-80B)

2024-10-29 Thread Fred Cisin via cctalk
fferent drives from different manufacturers I don't know. Because one couldn't supply drives with an asterisk? or because they didn't want to use the crappy Qume 142 drives on anything else? The Qume 142 was so slow stepping, that that was one of the reasons for introducing PC-DOS 2.10, to have a slower step time. -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Running DOS executables on other versions of DOSRe: Looking for Sharp PC-5000 disk drive (CE-510F or possibly MZ-80B)

2024-10-28 Thread Fred Cisin via cctalk
Converting drive: SOME 96tpi drives had a jumper to make them always double step SOME 2 speed drives had a jumper to force one speed. SO, it couldbe jumpered into a 360K, other than the heads being too narrow

[cctalk] Re: Running DOS executables on other versions of DOSRe: Looking for Sharp PC-5000 disk drive (CE-510F or possibly MZ-80B)

2024-10-28 Thread Fred Cisin via cctalk
means FM/single-density to everybody else)) If you do tackle the Herculean task of converting a 1.2M drive into a 360K drive, be aware that that will have abnormally narrower heads! -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Running DOS executables on other versions of DOSRe: Looking for Sharp PC-5000 disk drive (CE-510F or possibly MZ-80B)

2024-10-28 Thread Fred Cisin via cctalk
On Mon, 28 Oct 2024, Fred Cisin via cctalk wrote: Converting drive: (NOT PEACTICAL!) 1) Disk controllers intended for 360K generally run 250K bits per second (125K for single density), and do NOT support the 300K bps and 500K bps that are needed. Weltec sold some drives with a VERY bizarre

[cctalk] Re: Running DOS executables on other versions of DOSRe: Looking for Sharp PC-5000 disk drive (CE-510F or possibly MZ-80B)

2024-10-28 Thread Fred Cisin via cctalk
clamping cone. In contrast, 720K/400K/800K 3.5 inch disks are 600 Oersted; 1.4M 3.5" disks are about 750 Oersted Which is close enough that a high quality 720K disk could be used as a low quality 1.4M, . . . -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Running DOS executables on other versions of DOSRe: Looking for Sharp PC-5000 disk drive (CE-510F or possibly MZ-80B)

2024-10-28 Thread Fred Cisin via cctalk
ees, so that it's the full jacket, not just the cookie between the heads. (For a Twiggy disk turn it 90 degrees) -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Running DOS executables on other versions of DOSRe: Looking for Sharp PC-5000 disk drive (CE-510F or possibly MZ-80B)

2024-10-27 Thread Fred Cisin via cctalk
, and uses 250K data transfer rate. But, a 1.2M drive spins at 360 RPM, so you have to either change the drive to 300 RPM at 250k, OR use the 360RPM at 300K (some drives are dual speed; the FDC has a 300bps rate to compensatefor those that are not.) -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Ward Christensen NY Times Obituary

2024-10-25 Thread Fred Cisin via cctalk
position at Cal State Hayward, and, with six hours notice, I began teaching Fortran. But, by that time, the college was using IBM Microsoft Fortran for the PC (which had its own problems) -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Ward Christensen NY Times Obituary

2024-10-24 Thread Fred Cisin via cctalk
heard it from this list, I did the first post about it on this list I heard about it on another list, the person who posted about it on that list doesn't remember source -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Ward Christensen NY Times Obituary

2024-10-24 Thread Fred Cisin via cctalk
More than once it was "hand the tapes to someone meeting you at the gate and catch the next return flight". On Thu, 24 Oct 2024, Sellam Abraham via cctalk wrote: How did you know you were handing it to the right guy and not a Russian spy? He said, "Julius sent me", and had a piece of a Jell-

[cctalk] Re: Ward Christensen NY Times Obituary

2024-10-24 Thread Fred Cisin via cctalk
's Minix used. Tannenbaum and Torvalds argued about that: https://en.wikipedia.org/wiki/Tanenbaum%E2%80%93Torvalds_debate -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Ward Christensen NY Times Obituary

2024-10-24 Thread Fred Cisin via cctalk
On Thu, 24 Oct 2024, Chuck Guzis via cctalk wrote: How about Tymshare/Tymnet/SBCetc. Did Call Computer in Mountain View employ a file transfer protocol for use by subscribers? Impressive claims were made about station wagon full of tapes hurtling down the highway.

[cctalk] Re: Ward Christensen NY Times Obituary

2024-10-24 Thread Fred Cisin via cctalk
dialog (1966), Compuserve (1069), The Source (1979, so a tie), and Community Memory (1973, but not dialup), and probably a few lesser ones preceded CBBS. On Thu, 24 Oct 2024, Sellam Abraham via cctalk wrote: Come on, Fred. You're old but you're not that old, and I don't t

[cctalk] Re: Ward Christensen NY Times Obituary

2024-10-24 Thread Fred Cisin via cctalk
arted. So, CBBS was extremely important, but not "THE FIRST" bulletin board system. (and, of course, XMODEM was not "THE FIRST" file transfer protocol) (thank you, to our newspaper people, for clarifying why XMODEM was barely mentioned) -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Ward Christensen NY Times Obituary

2024-10-23 Thread Fred Cisin via cctalk
the 80286 was "brain dead". (possibly due to the difficulty of switching back and forth to "protected mode") The 80386, and even the 80386SX, was a very welcome step. -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Ward Christensen NY Times Obituary

2024-10-23 Thread Fred Cisin via cctalk
[from home], rather than dedicated publicly available terminals. -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Ward Christensen NY Times Obituary

2024-10-23 Thread Fred Cisin via cctalk
so maybe that would be unrealistic. -- Grumpy Ol' Fred ci...@xenosoft.com On Wed, 23 Oct 2024, Wayne S wrote: One last thing… Most news organizations have a death file for famous people. Their obits have already been written. Sent from my iPhone On Oct 23, 2024, at 14:23, Wayne

[cctalk] Re: Ward Christensen NY Times Obituary

2024-10-23 Thread Fred Cisin via cctalk
charcoal, and then only two mentions, in passing, of making cars. :-) Yes, I admit that is an exaggerated analogy. CBBS WAS extremely important and significant. But, I think that XMODEM had even more long-term impact. -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Ward Christensen NY Times Obituary

2024-10-23 Thread Fred Cisin via cctalk
n CBBS: "In 1977, he developed a protocol, called XMODEM, for sending computer files across phone lines; it was later used on C.B.B.S." . . . "For decades, his license plate read, XMODEM." -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Running DOS executables on other versions of DOSRe: Looking for Sharp PC-5000 disk drive (CE-510F or possibly MZ-80B)

2024-10-17 Thread Fred Cisin via cctalk
isters and see what it shows in AX (running that in CMD of my Windows 7 gives 0005 (5.00)!) One of the early homework assignments when I taught PC Assembly was to go into DEBUG and patch LINK.EXE and EXE2BIN.EXE to eliminate DOD version checking. -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Running DOS executables on other versions of DOSRe: Looking for Sharp PC-5000 disk drive (CE-510F or possibly MZ-80B)

2024-10-17 Thread Fred Cisin via cctalk
2.11 FORMAT run under DOS 2.00 Be aware that 2.11 is an OEM version, and is sometimes heavily customized for specific hardware. Ideally, you will want the MODE.COM that is specific toyour hardware. -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Running DOS executables on other versions of DOSRe: Looking for Sharp PC-5000 disk drive (CE-510F or possibly MZ-80B)

2024-10-17 Thread Fred Cisin via cctalk
MAKE SPARE COPIES OF FORMAT.COM, BEFORE YOU STEP ON IT!

[cctalk] Re: Running DOS executables on other versions of DOSRe: Looking for Sharp PC-5000 disk drive (CE-510F or possibly MZ-80B)

2024-10-17 Thread Fred Cisin via cctalk
th unless you do the same patch. 'course how do you run DEBUG to patch DEBUG if it won't run until sfter you patch it? :-) -- Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Ward Christensen (BBS, XMODEM) has died

2024-10-15 Thread Fred Cisin via cctalk
When my mom died, at home , at age 99, the ambulance people said that an autopsy has to be performed when someone dies at home. The police also came and said the same thing. When my mother-in-law passed, in the hospital, no autopsy needed to be done. I did not ask specifics in either case. On Tu

[cctalk] Re: Ward Christensen (BBS, XMODEM) has died

2024-10-15 Thread Fred Cisin via cctalk
Here is a little more information: https://arstechnica.com/gadgets/2024/10/ward-christensen-bbs-inventor-and-architect-of-our-online-age-dies-at-age-78/ still no cause of death ("probably natural causes"), memorial services, relatives/loved ones left behind, etc.

[cctalk] Re: LCM STL Files for 3D Printing of DEC PSU Chassis

2024-10-15 Thread Fred Cisin via cctalk
George Morrow said, "I believe in standards. Everyone should have one." About 45 years ago, he and Howard Fullmer tried to standardize the S100 bus. There seemed to have been as little written about Howard's death as the void around Ward christensen's death. On Tue, 15 Oct 2024, Sellam Abrah

[cctalk] Re: LCM STL Files for 3D Printing of DEC PSU Chassis

2024-10-15 Thread Fred Cisin via cctalk
On Tue, 15 Oct 2024, Paul Koning via cctalk wrote: "The nice thing about standards is that there are so many to choose from" - Andrew Tanenbaum. George Morrow said, "I believe in standards. Everyone should have one." About 45 years ago, he and Howard Fullmer tried to standardize the S100

[cctalk] Re: Ward Christensen (BBS, XMODEM) has died

2024-10-14 Thread Fred Cisin via cctalk
On Mon, 14 Oct 2024, Mike Katz wrote: Does anyone have any information about visitation or a wake or funeral? I was unable to find any information using Google. Nothing about cause of death, memorial services, etc. If you find any information, please share.

[cctalk] Re: Ward Christensen (BBS, XMODEM) has died

2024-10-14 Thread Fred Cisin via cctalk
ed "Do you want FAME?" I replied, "Well, someday, I'd like to be recognized a little, and maybe even listed along with Ward Christensen." The very next year, the attendee roster of a conference I went to listed: ... Christensen, Ward Cisin, Fred Cisler, Steve ... That is m

[cctalk] Re: Ward Christensen (BBS, XMODEM) has died

2024-10-14 Thread Fred Cisin via cctalk
Grumpy Ol' Fred ci...@xenosoft.com

[cctalk] Re: Ward Christensen (BBS, XMODEM) has died

2024-10-13 Thread Fred Cisin via cctalk
Your book should probably have a chapter on the age of BBS's With thorough mention of Ward Christensen -- Grumpy Ol' Fred ci...@xenosoft.com On Sun, 13 Oct 2024, Murray McCullough via cctalk wrote: I'm afraid time abides no one! It seems that the greats were of

[cctalk] Re: Ward Christensen (BBS, XMODEM) has died

2024-10-13 Thread Fred Cisin via cctalk
ater, there was some competition from Kermit, but, other than being "FROM A UNIVERSITY!", it wasn't nearly as good. Not only are all of the greats dying off, but soon there won't be anybody around who even knew about them. -- Grumpy Ol' Fred ci...@xenosoft.com

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