[cctalk] Re: Scada computers and remote terminal units

2025-07-25 Thread Will Cooke via cctalk
> On 07/25/2025 4:28 PM EDT Fred Cisin via cctalk wrote: > > > That's not just a nasty prank, that is an act of war. More details here: https://www.controleng.com/throwback-attack-the-u-s-hits-russia-with-the-first-logic-bomb-attack/ Will

[cctalk] Re: Ferroresonant transformer mystery

2025-07-17 Thread Will Cooke via cctalk
Well, I suppose I should add the link to the data I mentioned. https://www.hammfg.com/electronics/transformers/power/166

[cctalk] Re: Ferroresonant transformer mystery

2025-07-17 Thread Will Cooke via cctalk
> > Yes, I can see that for utility transformers, which are carefully optimized > for the task. But I would think that power supply transformers are likely to > have larger margins so they aren't operated so close to the limits. > > paul Here is a list of current production models of

[cctalk] Re: Ferroresonant transformer mystery

2025-07-16 Thread Will Cooke via cctalk
> On 07/16/2025 11:10 AM EDT Tony Duell via cctalk > wrote: > > > On Wed, Jul 16, 2025 at 4:00 PM Jon Elson via cctalk > wrote: > > > > What I might do is make up a cap bank that is 1.2 X larger > > than the 2 uF and power it up. > > Remember that the resonant frequency goes as 1/sqrt(L*C

[cctalk] Re: Bill Atkinson

2025-06-10 Thread Will Cooke via cctalk
There was Ivan Sutherland's Sketchpad in 1963(?) https://www.invent.org/inductees/ivan-e-sutherland Will > On 06/09/2025 7:48 PM EDT Paul Koning via cctalk > wrote: > > > Drawing on a computer screen goes back at least a decade from that (PLATO had > it back then) if not more. > >

[cctalk] Re: Comstar Computer Systems System 4 Intel 4004 based Industrial Computer

2025-05-17 Thread Will Cooke via cctalk
> On 05/17/2025 11:56 AM EDT dwight via cctalk wrote: > > > It all depends on what one means by a computer that one could do useful > things on. A fellow named Tom Pittman wrote a 4004 assembler that ran on the > SIM4-01 board, using a teletype's tape reader as the source code and the > i

[cctalk] Re: Wang TTL BASIC

2025-05-07 Thread Will Cooke via cctalk
Coincidentally, this link to photos of a Wang 2200 came through a facebook group today. Apparently he recently acquired one. Will https://www.icloud.com/sharedalbum/?fbclid=IwY2xjawKIevhleHRuA2FlbQIxMQBicmlkETFtb3YxUHpBRnZ5QnlJUGFuAR5jcMRIH9jACdejVSeRcDn7rOINwo8s0v0_MaGzHOkKvOh_4082rb7ZwqgRnw_

[cctalk] Re: Wang TTL BASIC

2025-05-04 Thread Will Cooke via cctalk
>From all I have seen, Maurice Wilkes is considered the inventor of "microcode" >as we know it. In the linked paper from 1951 he uses the term >"micro-programme", so I think it is safe to say microcode was used in the same >way in the 70s as it is today, although surely some people used it for

[cctalk] Compute's Gazette returning

2025-04-30 Thread Will Cooke via cctalk
I saw on the BASIC Programming group on FaceBook that a new venture is going to start publishing Compute's Gazette again. https://www.computesgazette.com/ Perhaps interesting to some of you. Will You just can't beat the person who never gives up. Babe Ruth

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

2025-04-03 Thread Will Cooke via cctalk
> On 04/03/2025 5:37 PM EDT Chuck Guzis via cctalk > wrote: > > > On 4/3/25 14:21, John Foust via cctalk wrote: > > At 10:22 PM 4/1/2025, Chuck Guzis via cctalk wrote: > > > In another task where I wanted to quickly generate a text-based > > profile of a computer's specifications and component

[cctalk] Re: IDT 49C402BG84 Pinout?

2025-03-07 Thread Will Cooke via cctalk
Digikey has the part listed ($166 each) and their page has a link to the datasheet that seems to have the pga package: Digikey https://www.digikey.com/en/products/detail/rochester-electronics-llc/49C402GB/12112112 Direct to Datasheet https://rocelec.widen.net/view/pdf/rbdjetrmoo/IDTIS12976-1.pdf

[cctalk] Re: Elliott Algol

2025-02-17 Thread Will Cooke via cctalk
> On 02/17/2025 3:52 PM EST Paul Koning via cctalk > wrote: > > Indeed. There's a wonderful photo of them by Ansel Adams. Look for it; it > shows the two of them doing a mad-genius imitation, with a random collection > of waveguides and the like in their hands. > I believe that photo is

[cctalk] Re: RS232 - parallel modems!?

2025-02-09 Thread Will Cooke via cctalk
Hi Steve, In my opinion that article leaves a LOT to be desired from a technical standpoint. I think a lot of the stuff he states as facts are misleading at best. I remember when those came out. IIRC they were mostly marketed toward laptops without serial ports. But as stated some desktops di

[cctalk] Re: Open source a panacea?

2025-02-03 Thread Will Cooke via cctalk
> On 02/03/2025 2:36 PM EST Fred Cisin via cctalk wrote: > > That deck would be difficult to even source enough blank cards for. :-) I suspect for the several million cards you'd need you could easily get some local paper company to tool up and make them fairly reasonably :-) Will You jus

[cctalk] Re: RS232 then and now (bitbanging)

2025-02-02 Thread Will Cooke via cctalk
> On 02/02/2025 2:47 PM EST Steve Lewis via cctalk > wrote: > ... > > Another example is the Color Computer 3. UltimateTerm 2.4 from 1987 could > bit-bang reliably 9600 baud (also Twilight Term from 1996). The CoCo3 had > a higher speed CPU option than its original. "bit banging" (imo) is

[cctalk] Re: AI? Really?

2025-01-21 Thread Will Cooke via cctalk
> On 01/21/2025 5:52 PM EST Fred Cisin via cctalk wrote: > > > An increase in acceleration (third derivative positive) would account for > increased gravity. > :-) Geez! All this pseudo science! All ya gotta do is follow the REAL science! Of course gravity has increased since there was no

[cctalk] A bit of humor to test the list

2024-12-03 Thread Will Cooke via cctalk
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/ Will

[cctalk] Re: NTE is dead

2024-10-01 Thread Will Cooke via cctalk
> On 10/01/2024 9:26 PM EDT CJ Reha via cctalk wrote: > > > The scary part for me is their entire datasheet archive was apparently > wiped without any backups. That was crucial for finding rough, “close > enough” specs for house numbered parts that cross referenced to something > they made. I

[cctalk] Re: LCM auction

2024-08-29 Thread Will Cooke via cctalk
> On 08/29/2024 2:56 PM EDT Wayne S via cctalk wrote: > > > I know and he’s good at it! > Besides money though. > Sent from my iPhone > politicians > On Aug 29, 2024, at 11:55, Sellam Abraham wrote: > > > > Yes, he collects money. > > Sellam > > On Thu, Aug 29, 2024, 11:54 AM Wayne S

[cctalk] Re: A little off-topic but at least somewhat related: endianness

2024-08-15 Thread Will Cooke via cctalk
> On 08/15/2024 6:10 PM EDT Mike Katz via cctalk wrote: > I'm pretty certain you are wrong about the byte case below. The C standard says something about no math will be done smaller than a short. I don't have it handy so can't quote exactly. But what that means is before the two bytes are

[cctalk] flyback transformer supplier

2024-08-09 Thread Will Cooke via cctalk
>From time to time I have seen people looking for flyback transformers on the >list. I just came across a resource that may (or may not) be useful for >anyone looking for one. Hope this is of use to someone. https://www.technotronic-dimensions.com/sitemap.htm Will Grownups never understand a

[cctalk] Re: Schematic or PCB layout for MAI Jolt

2024-08-07 Thread Will Cooke via cctalk
> On 08/07/2024 3:46 PM EDT brad via cctalk wrote: > > > Hi there,Haven't had much time for vintage computers due to my job dealing > with new ones, but the odd evening I have been working on PCB replica > projects.One of them is for the MAI Jolt. I recently picked up alsome NOS > 6530-004s,

[cctalk] Re: MS-DOS

2024-08-05 Thread Will Cooke via cctalk
> On 08/05/2024 3:26 PM EDT Paul Koning via cctalk > wrote: > > > Could we please keep politics off this list? I could argue at length about > this topic but I'm not going to, this list is not the forum for that. > > paul > I second that. Will

[cctalk] Re: Seattle’s Living Computers Museum logs off for good as Paul Allen estate will auction vintage items

2024-06-25 Thread Will Cooke via cctalk
> On 06/25/2024 7:06 PM CDT Sellam Abraham via cctalk > wrote: > > > On Tue, Jun 25, 2024 at 4:54 PM Rick Bensene via cctalk < > cctalk@classiccmp.org> wrote: > > > > Allen’s estate, which has been managing and winding down his vast array > > of holdings > > > > > > > I'm compelled to lo

[cctalk] Re: teletype roll as an RF termination load

2024-06-12 Thread Will Cooke via cctalk
> On 06/12/2024 5:55 PM CDT Fritz Mueller via cctalk > wrote: > > > > One of the engineers here asked if there were any teletype rolls along with > these and if so that they be salvaged because "...it is broadly lossy to rf > and can be used as an rf termination load." > > cheers, > --Frit

[cctalk] Re: Experience using an Altair 8800 ("Personal computer" from 70s)

2024-06-07 Thread Will Cooke via cctalk
> On 06/07/2024 9:18 AM CDT Fred Cisin via cctalk wrote: > > > We can at least all agree that the Ford Mustang was not a "personal > computer", nor "Personal Computer", although almost any Personal Computer > could fit in the back seat or the trunk, but probably not in the glove > compartment.

[cctalk] Re: Experience using an Altair 8800 ("Personal computer" from 70s)

2024-06-05 Thread Will Cooke via cctalk
> On 06/05/2024 10:37 AM CDT Sellam Abraham via cctalk > wrote: > > > On Wed, Jun 5, 2024, 8:33 AM Will Cooke via cctalk > wrote: > > > no > > > On 06/05/2024 10:28 AM CDT Sellam Abraham via cctalk < > > cctalk@classiccmp.org> wrote: > &

[cctalk] Re: Experience using an Altair 8800 ("Personal computer" from 70s)

2024-06-05 Thread Will Cooke via cctalk
no > On 06/05/2024 10:28 AM CDT Sellam Abraham via cctalk > wrote: > > So, now we're adding the age of the buyer as an element of what defines a > "personal" computer? > > Sellam > > > No. Not sure where I said that. But, no. Grownups never understand anything by themselves and it is tireso

[cctalk] Re: Experience using an Altair 8800 ("Personal computer" from 70s)

2024-06-05 Thread Will Cooke via cctalk
> On 06/05/2024 8:33 AM CDT Bill Degnan via cctalk > wrote: > > > On Wed, Jun 5, 2024 at 9:03 AM Will Cooke via cctalk > wrote: > > > > So if a computer was built to be used by a single operator for general > purpose use, open to any application developmen

[cctalk] Re: Experience using an Altair 8800 ("Personal computer" from 70s)

2024-06-05 Thread Will Cooke via cctalk
> On 06/05/2024 7:17 AM CDT Liam Proven via cctalk > wrote: > > It isn't personal if an ordinary person can't afford it. > > > > That isn't _the people_. The People means hoi polloi. It means > ordinary people. It means the masses. A personal computer is only > personal if the person in quest

[cctalk] Re: Experience using an Altair 8800 ("Personal computer" from 70s)

2024-05-31 Thread Will Cooke via cctalk
> On 05/31/2024 8:11 PM CDT CAREY SCHUG via cctalk > wrote: > > Sorry, WRONG. > > --Carey > Why do I feel like I'm observing a first grade classroom where the boys are arguing about whose dad can beat up the others? Grownups never understand anything by themselves and it is tiresome for ch

[cctalk] Re: interlace [was: NTSC TV demodulator ]

2024-05-20 Thread Will Cooke via cctalk
> On 05/20/2024 12:06 PM CDT CAREY SCHUG via cctalk > wrote: > > > so, just curious. how do digital TVs (and monitors) work? I presume the dots > are a rectangle, not sloping down to the right, no half a line at the top and > bottom. Do they just assume the brain can't tell that (for the co

[cctalk] Re: interlace [was: NTSC TV demodulator ]

2024-05-20 Thread Will Cooke via cctalk
> On 05/20/2024 1:02 PM CDT Wayne S via cctalk wrote: > > > In the vt100, setup menu “B” had an interlace on or off setting. > I just looked it up. > > That is almost certainly setting what type of signal is generated. Like a TV of the same era, the monitor (display) portion doesn't care;

[cctalk] Re: NTSC TV demodulator

2024-05-19 Thread Will Cooke via cctalk
> On 05/19/2024 8:50 AM CDT Henry Bent via cctalk wrote: > > > On Sun, May 19, 2024, 08:08 Will Cooke via cctalk > wrote: > > > I have a couple of 70s/80s "home" computers (e.g. Radio Shack Color > > Computer) that are intended to connect to a TV s

[cctalk] NTSC TV demodulator

2024-05-19 Thread Will Cooke via cctalk
I have a couple of 70s/80s "home" computers (e.g. Radio Shack Color Computer) that are intended to connect to a TV set. They don't have easily available composite video, even internally, only modulated RF output. Currently I have an old CRT TV that I use with them, but for various reasons that i

[cctalk] Re: DOS p-System Pascal: (Was: Saga of CP/M)

2024-05-09 Thread Will Cooke via cctalk
> On 05/09/2024 5:46 PM CDT ben via cctalk wrote: > > Did any one make a REAL TIME OS the 386? There were / are quite a few. https://en.wikipedia.org/wiki/Comparison_of_real-time_operating_systems The 386ex was specifically intended for embedded systems. The first one that came to mind, and

[cctalk] Re: DOS p-System Pascal: (Was: Saga of CP/M)

2024-05-09 Thread Will Cooke via cctalk
> On 05/09/2024 7:24 AM CDT Bill Degnan via cctalk > wrote: > > > Mike > I was thinking operating systems and the early launch version IBM PC, but > yes once the hardware caught up Turbo Pascal was a popular program now that > I think about it. So I guess the PC versions just needed more horse

[cctalk] Re: Double Density 3.5" Floppy Disks

2024-05-06 Thread Will Cooke via cctalk
> On 05/06/2024 8:58 PM CDT Fred Cisin via cctalk wrote: > > > Ignorant question: > > Q: When looking for current availability of bulk tape/disk demagnetizers, > on eBay, I ran into a lot of CD/DVD demagnetizers > What kind of a problem do they have with magnetism? > > Or is this like the DVD R

[cctalk] MS-DOS source code

2024-05-02 Thread Will Cooke via cctalk
Some may find this interesting. Microsoft has released the source for MS-DOS versions 1.25, 2, and 4. https://github.com/microsoft/MS-DOS Will Grownups never understand anything by themselves and it is tiresome for children to be always and forever explaining things to them, Antoine de Sain

[cctalk] Re: Z80 vs other microprocessors of the time.

2024-04-21 Thread Will Cooke via cctalk
> On 04/21/2024 7:06 PM CDT Peter Coghlan via cctalk > wrote: > > > > Why is that? Did the Z80 take more cycles to implement it's more complex > instructions? Is this an early example of RISC vs CISC? > > Regards, > Peter Coghlan I'm certainly no authority, but I have programmed both processo

[cctalk] Re: Bomar 901b My wife found in my stuff. Is this as scarce at it seems?s,?

2024-04-16 Thread Will Cooke via cctalk
I think he means Bowmar https://spectrum.ieee.org/the-consumer-electronics-hall-of-fame-bowmar-901b > On 04/16/2024 5:34 AM CDT ED SHARPE via cctalk wrote: > > > No bomar brand > > Sent from AOL on Android > > On Mon, Apr 15, 2024 at 7:15 PM, Wayne S wrote: > Bomar as in the Bomber Aircraft? >

[cctalk] Re: Turbo Pascal Kermit for CP/M

2024-04-08 Thread Will Cooke via cctalk
You mentioned that the TRS-80(s) have hard disks. Perhaps the extra space taken by the hard disk bios is the culprit. Maybe a floppy-only machine (with floppy only bios) is the only way to compile it. Will Grownups never understand anything by themselves and it is tiresome for children to b

[cctalk] Re: oscilloscopes

2024-04-01 Thread Will Cooke via cctalk
I used to have a Tek 453(?) that was really nice. I sold it when I got a Tek 7201(?) 1Ghz model. I recently sold it. I hated getting rid of it but it was big enough to be used as a small desk and weighed more than my back could handle any more. I still have a 561A that I've been meaning to r

[cctalk] Re: typical IC kits on Amazon and elsewhere

2024-03-30 Thread Will Cooke via cctalk
> On 03/30/2024 3:37 PM CDT Just Kant via cctalk wrote: > > > Clearly all or virtually all chineseum, correct? > > That being the case, um, what type.of.quality can be expected? Some are > fairly cheap. I guess thenworld isn't to be expected. I'm not clear on whether you mean some specific ch

[cctalk] Re: Paper tape in casettes...

2024-02-28 Thread Will Cooke via cctalk
> On 02/27/2024 2:13 PM CST Doug McIntyre via cctalk > wrote: > > > On Tue, Feb 27, 2024 at 11:10:34AM -0700, ben via cctalk wrote: > > PS: With low cost Chinese PCB's and vintage parts, why are people not > > building real hardware replica's of interesting machines. > But they are.. You migh

[cctalk] Re: VCF SoCal

2024-02-21 Thread Will Cooke via cctalk
> On 02/21/2024 5:01 AM CST Tony Duell via cctalk wrote: > > > > Did someone port it to other arch than ARM ? > The oldest version I know of ran on PDP11s. I am pretty sure there was > a 68000 version at one point too. > > -tony Wasn't the Amiga OS built on Tripos? Will Grownups never under

[cctalk] Re: VCF SoCal

2024-01-31 Thread Will Cooke via cctalk
> On 01/31/2024 11:34 AM CST Henry Bent via cctalk > wrote: > > > On Wed, 31 Jan 2024 at 12:13, Liam Proven via cctalk > wrote: > > I write for an international audience and sometimes people from the > > USA are openly and repeatedly incredulous that "obscure" British > > computers -- that me

[cctalk] Re: FW: Re: ADM3a screen rot.

2024-01-29 Thread Will Cooke via cctalk
> On 01/29/2024 2:00 PM CST Sellam Abraham via cctalk > wrote: > > > On Mon, Jan 29, 2024 at 9:55 AM William Sudbrink via cctalk < > cctalk@classiccmp.org> wrote: > > dripping. Anyway, like Wile E Coyote, after I had shoved a screwdriver > > under the uncooperative anode cap and finally got

[cctalk] Re: WWVB

2024-01-14 Thread Will Cooke via cctalk
> On 01/14/2024 1:54 PM CST Jonathan Chapman via cctalk > wrote: > > > Bill, > > If it's an older clock it's probably tripping over a timecode transmission > format/modulation change. I forget the exact details but changes were > required to my old 8085-based Spectracom receiver. > > Tha

[cctalk] Re: Intel 4004

2023-11-21 Thread Will Cooke via cctalk
More information is here: https://firstmicroprocessor.com/?doing_wp_cron=1700608229.8666059970855712890625 I think that is the designers (Rod Holt?) website. Apparently he won a legal battle to use the term "first microprocessor" for whatever that is worth. Will > On 11/21/2023 2:56 PM CST Br

[cctalk] Re: IBM 727 tape drive

2023-10-13 Thread Will Cooke via cctalk
> On 10/13/2023 8:56 AM CDT Paul Koning via cctalk > wrote: > > > > On Oct 13, 2023, at 4:41 AM, Christian Corti via cctalk > > wrote: > > > > ... > > And the interesting part will be to build the DC power supply for the many > > voltages (-270V, -130V, -60V, +140V, +270V) and the heater

[cctalk] Re: Good C to FPGA/PLA compiler

2023-09-23 Thread Will Cooke via cctalk
> On 09/23/2023 3:25 PM CDT Warner Losh via cctalk > wrote: > > > On Sat, Sep 23, 2023, 12:31 PM Paul Koning via cctalk > wrote: > > > > > > > > On Sep 22, 2023, at 3:07 PM, Chuck Guzis via cctalk < > > cctalk@classiccmp.org> wrote: > > > > > > On 9/22/23 11:34, emanuel stiebler via cctalk

[cctalk] Re: Good C to FPGA/PLA compiler

2023-09-22 Thread Will Cooke via cctalk
> On 09/22/2023 6:26 PM CDT Mike Katz via cctalk wrote: > > > I plan on controlling the gate array with an RP2040 dual core cortex M0 > running at 133 MHz and 8 PIO processors. > Hi Mike, Since you are planning to use a micro anyway, and it doesn't appear you will need a great deal of exte

[cctalk] Re: For Fred, especially: "Everything I know about floppy disks"

2023-09-11 Thread Will Cooke via cctalk
> On 09/11/2023 12:18 PM CDT ben via cctalk wrote: > > Did Algol in general have memory leaks?,or is just C and Windows. Not sure about the language, but at this point most of its programmers have memory leaks. Will If you want to build a ship, don't drum up people to collect wood and don'

[cctalk] Re: For Fred, especially: "Everything I know about floppy disks"

2023-09-10 Thread Will Cooke via cctalk
> On 09/10/2023 3:00 PM CDT Fred Cisin via cctalk wrote: > > > On Sun, 10 Sep 2023, Chuck Guzis via cctalk wrote: > > Now, let's talk about 2.8" and 3.25" drives; UK readers are certainly > > familiar with 3.0 inch CF drives used on Amstrads. > Amdek? sold a dual 3" drive in USA, marketed as

[cctalk] Re: Friden (was Silly question about S-100 and video monitors)

2023-09-02 Thread Will Cooke via cctalk
> On 09/02/2023 8:50 AM CDT Peter Corlett via cctalk > wrote: > > > On Fri, Sep 01, 2023 at 04:32:57PM -0600, ben via cctalk wrote: > [...] > > I think that way has been for a while. Having a hard time finding a 68B50 Unicorn Electronics has the 68B50 for $7.99 https://www.unicornelectronics

[cctalk] Re: Silly question about S-100 and video monitors

2023-09-01 Thread Will Cooke via cctalk
> On 09/01/2023 12:42 PM CDT Chuck Guzis via cctalk > wrote: > > > On 9/1/23 10:23, Will Cooke via cctalk wrote: > > They made pistols: > > https://www.popularmechanics.com/military/weapons/a23340620/singer-sewing-machine-company-45-pistol-gun/ > >

[cctalk] Re: Silly question about S-100 and video monitors

2023-09-01 Thread Will Cooke via cctalk
They made pistols: https://www.popularmechanics.com/military/weapons/a23340620/singer-sewing-machine-company-45-pistol-gun/ Will > > On 9/1/23 09:02, Tony Duell via cctalk wrote: > > >> The keyboard was from a surplus Singer data entry machine ( I thought they > >> only made sewing machines )

[cctalk] Re: PDP-8/L $15,000

2023-08-28 Thread Will Cooke via cctalk
> On 08/28/2023 3:48 PM CDT Paul Koning via cctalk > wrote: > > Lander, in FOCAL? The only one I know is for the GT40, in assembler. > > paul Apparently the original version was in FOCAL. https://www.cs.brandeis.edu/~storer/LunarLander/LunarLander.html Will

[cctalk] Re: Signetics N8220B ??

2023-08-28 Thread Will Cooke via cctalk
> On August 28, 2023 8:24 AM CDT Holm Tiffe via cctalk > wrote: > > > Hi guys, > I have 8 "new" Chips from Signetics, they are labeled: > > S7536 > N8220B > > and on the backside between the pins "8220". > > Does anyone know what they do? My search with google and > in the 1976 Signetics

[cctalk] Re: Talking PDP11

2023-07-11 Thread Will Cooke via cctalk
> On 07/11/2023 9:59 AM CDT Paul Koning via cctalk > wrote: > But, judging by Wikipedia, the earlier Synclavier models were not digital > sampled waveform synthesizers but rather FM synthesizers. So I still wonder > if anyone did it earlier than Sherwin. > > paul Possibly the Computer Mu

[cctalk] Re: Talking PDP11

2023-07-09 Thread Will Cooke via cctalk
> On 07/09/2023 1:46 PM CDT Douglas Taylor via cctalk > wrote: > > > I was surprised to see that it took ~34 ms to run through all the > numbers from 0-, that is about 34 Hz. The manual says the 'settling > time' is 6 microseconds. Is this fast enough for audio? > > How would you conve

[cctalk] Re: BEWARE: Phishing

2023-07-08 Thread Will Cooke via cctalk
> On 07/08/2023 8:36 AM CDT Alexander Schreiber via cctalk > wrote: > > > On Sat, Jul 08, 2023 at 12:49:43PM +1000, Doug Jackson via cctalk wrote: > > To be completely honest, Electrotechnology students with 415v DC bench > > supplies and HV caps all learnt very quickly not to catch somethin

[cctalk] Re: PCs Limited XT

2023-06-14 Thread Will Cooke via cctalk
> On 06/14/2023 4:47 PM CDT Bill Degnan via cctalk > wrote: > > > Obviously I opened the box. So Inguess the Turbo board is just > "motherboard" > Bill > Back in those days I made my living assembling and repairing those XT machines. The motherboards were almost universally from a handful

[cctalk] Re: Did Bill Gates Really Say That?

2023-06-14 Thread Will Cooke via cctalk
> On 06/14/2023 12:58 PM CDT Bill Degnan via cctalk > wrote: > > As far as the Bill Gates quote, I do remember reading an actual longer > quote somewhere (?), the context was lost from a larger paragraph if one > takes just the snippet statement IIRC. > Maybe the longer quote was "I never s

[cctalk] Re: IBM RT Graphics

2023-06-07 Thread Will Cooke via cctalk
> On 06/07/2023 1:26 PM CDT Jonathan Katz via cctalk > wrote: > > > Hello! > > I have an IBM 6152 aka IBM RT system I rescued. (It may be a 6151?) > I'm 90% sure it has colour graphics. The system does seem to POST > correctly (according to the LED on the front) but the CRT is dead. I'm > w

[cctalk] Re: VT180

2023-06-02 Thread Will Cooke via cctalk
> On 06/02/2023 10:56 AM CDT John Floren via cctalk > wrote: > > > Anyone on the list have a VT-180 a.k.a "Robin"? I got one for free a while > back, but no disks. Wondering if anyone's in a position to make copies of > their working disks and mail them to me -- I could have blanks sent, o

[cctalk] Re: Getting floppy images to/from real floppy disks.

2023-05-31 Thread Will Cooke via cctalk
> On 05/31/2023 3:33 PM CDT Mike Katz via cctalk wrote: > > > I think I will just convert file sizes to lengths of paper tape for > comparison: > > 1K 102.4" > 10K 85' > 100K 853' > 1M 1.6 Miles > 10M 16.5 Miles > 100M 165 Miles > 1G 1,695 Miles > 10G 16,947 Miles > 100G 6.8 Earth Circumfere

[cctalk] Re: Getting floppy images to/from real floppy disks.

2023-05-25 Thread Will Cooke via cctalk
> On 05/25/2023 11:13 AM CDT Mike Katz via cctalk wrote: > > > Chuck, > > I agree with you that well written and commented C is the way to go. > > The advantage to an IDE comes with debugging and easy access symbols and > variables. > Some IDEs can be convinced to use standard makefiles.

[cctalk] Re: Looking for datasheet of RTC M3001 ...

2023-04-12 Thread Will Cooke via cctalk
> On 04/12/2023 8:26 AM CDT Bernd Kopriva via cctalk > wrote: > > > Thanks for the link ... > ... i will ask him if this my help. > > Thanks Bernd > It may also be useful to contact the CS/EE department(s) at ETH and ask them. Perhaps they have a copy archived with the project documents

[cctalk] Re: on the origin of home computers

2023-03-09 Thread Will Cooke via cctalk
> On 03/09/2023 1:24 AM CST Steve Lewis via cctalk > wrote: > > > Thank you all for the notes (and feedback). > > The 1964 skit of Patty Duke using that Univac-422 - all the markings of a > personal computer right there, no doubt. But dragging that into a home > doesn't make it a home compu

[cctalk] Re: on the origin of home computers

2023-03-08 Thread Will Cooke via cctalk
> On 03/08/2023 2:42 PM CST Sellam Abraham via cctalk > wrote: > > > On Wed, Mar 8, 2023 at 12:40 PM Will Cooke via cctalk > wrote: So, how do we get them interested? I > > can't think of a better idea than asking one of the few that IS > > interest

[cctalk] Re: on the origin of home computers

2023-03-08 Thread Will Cooke via cctalk
> On 03/08/2023 2:21 PM CST Sellam Abraham via cctalk > wrote: > > > On Wed, Mar 8, 2023 at 11:55 AM Will Cooke via cctalk > wrote: > > > > > > On 03/08/2023 11:59 AM CST Tarek Hoteit via cctalk < > > cctalk@classiccmp.org> wrote: > >

[cctalk] Re: on the origin of home computers

2023-03-08 Thread Will Cooke via cctalk
> On 03/08/2023 11:59 AM CST Tarek Hoteit via cctalk > wrote: > > We probably need to get more advice from her on what we all, old-school > timers, should do to help keep the legacy going on ! > > Regards, > Tarek Hoteit > That statement may be the most important one on this list in a lo

[cctalk] Re: Wanted: Apple III 5MB Profile HD driver file

2023-02-23 Thread Will Cooke via cctalk
> On 02/21/2023 10:48 PM CST Eric Smith via cctalk > wrote: > > Profile trivia: > > The firmware _inside_ the Profile is strange in that it doesn't actually > KNOW the size of the Profile it's installed into. At power up, when the > drive reads the home block, the drive size is stored there

[cctalk] Re: Store with "vintage" computers and parts

2023-02-10 Thread Will Cooke via cctalk
> On 02/10/2023 9:53 AM CST Sellam Abraham via cctalk > wrote: > > > DDG is just a Google fish bowl. Same data set, similar results. > > If you're concerned about privacy, there are much better options available. > > Sellam > I would be interested in knowing some of those options. Than

[cctalk] Re: Store with "vintage" computers and parts

2023-02-09 Thread Will Cooke via cctalk
who here... > > > Steve > > > > > > > > > On 2/8/2023 7:47 PM, Glen Slick via cctalk wrote: > > > > On Wed, Feb 8, 2023 at 7:17 PM Will Cooke via cctalk > > > > wrote: > > > > > This place may be of interest. Most

[cctalk] Store with "vintage" computers and parts

2023-02-08 Thread Will Cooke via cctalk
This place may be of interest. Most of the stuff they have for sale probably isn't of much interest here, but there are a few gems. The link takes you to one, which is how I found it. https://www.bryanipad.shop/product/microlog-corporation-atr-6800-vintage-rare-738148146177114113.html Not affi

[cctalk] Re: Computer Museum uses GreaseWeazle to help exonerate Maryland Man

2023-02-03 Thread Will Cooke via cctalk
> On 02/03/2023 8:25 AM CST Paul Koning via cctalk > wrote: > It's puzzling that temperature would matter. Obviously, when you hit the > Curie temperature the data goes away, but for typical magnetic materials that > is in the hundreds of degrees. Does the hysteresis curve shift enough at

[cctalk] Re: Core memory (was Re: Computer Museum uses GreaseWeazle to help exonerate Maryland Man)

2023-02-02 Thread Will Cooke via cctalk
> On 02/02/2023 10:03 AM CST Sellam Abraham via cctalk > wrote: > > > This discussion on core memory got me thinking: > > Is it possible to "read" core memory by examining each core using some kind > of instrument that would sense its "charge" (or lack thereof) > non-destructively? > > Cou

[cctalk] Re: Computer Museum uses GreaseWeazle to help exonerate Maryland Man

2023-02-01 Thread Will Cooke via cctalk
> On 02/01/2023 3:51 PM CST Paul Koning via cctalk > wrote: > ot sure about that. What sort of numbers are we talking about? > > If all else fails there's core memory, which as far as I remember is pretty > much unlimited for both read and write. > > paul I don't know for sure and can't f

[cctalk] Re: DLOAD BASIC command for Color Computer 1/2 heritage

2023-01-30 Thread Will Cooke via cctalk
> On Monday, January 30, 2023, 01:02:16 AM EST, Jim Brain via cctalk > wrote: > > Over at the CoCo Mailing List, there's a archeological discussion about > the DLOAD BASIC command in older versions of the Color Computer BASIC. > It uses the serial port (and no doubt was designed for computer s

[cctalk] Re: Computer Museum uses GreaseWeazle to help exonerate Maryland Man

2023-01-27 Thread Will Cooke via cctalk
> That was a common practice in those days. I remember seeing news stories > about it. I "think" a law was passed in late 80s forbidding that. A lot of > products now say "this box was (proudly) made in the USA. > Will https://www.ftc.gov/business-guidance/resources/complying-made-usa-standard#

[cctalk] Re: Computer Museum uses GreaseWeazle to help exonerate Maryland Man

2023-01-27 Thread Will Cooke via cctalk
> On 01/27/2023 3:00 PM CST Bill Gunshannon via cctalk > wrote: > > > On 1/27/2023 3:53 PM, Fred Cisin via cctalk wrote: > >>> and IBM sold what seems to be a re-badged Epson MX-80, > > > > On Fri, 27 Jan 2023, Bill Gunshannon via cctalk wrote: > > > Yes, I always got a kick out of these. Ca

[cctalk] Re: Computer Museum uses GreaseWeazle to help exonerate Maryland Man

2023-01-27 Thread Will Cooke via cctalk
> On 01/27/2023 8:41 AM CST geneb via cctalk wrote: > > > > ... my freshman year of HS. I was the only guy > in a room full of girls ... > > g. > And the downside of this was...? Will

[cctalk] Re: Philips P2000C add-ons.

2023-01-24 Thread Will Cooke via cctalk
> On 01/24/2023 11:09 AM CST Tony Duell via cctalk > wrote: > > > A couple of questions if anyone has experience of this machine : > > 1) There is a 5 pin DIN socket for connecting an external video > monitor. The signals seem to be TTL-level separate syncs at European > TV rates (15625Hz h

[cctalk] Re: IBM PC/XT and NEC "gold" tam

2023-01-21 Thread Will Cooke via cctalk
> On 01/21/2023 2:55 PM CST Fred Cisin via cctalk wrote: > The first 5150 was available with one row of 16K RAM, you could plug > whatever you had (such as from Godbout) into the other 3 rows, and almost > anything was cheaper than IBM's prices. > > > I think that the early 5160 also used 16

[cctalk] Re: AI applied to vintage interests

2023-01-19 Thread Will Cooke via cctalk
Coincidentally, I just saw this article on CNN: https://www.cnn.com/2023/01/19/tech/chatgpt-future-davos/index.html I think it says more about the state of education, even among the "elite," than it does about the state of "AI." But that's just me. Will

[cctalk] Re: PT-68K

2022-12-28 Thread Will Cooke via cctalk
y not what 99% of you would have done—I stopped taking orders!" > On 12/28/2022 6:42 PM CST Will Cooke via cctalk wrote: > > > > On 12/28/2022 6:21 PM CST Chris via cctalk wrote: > > > > > > I do seem to recall some off the wall looking case in the

[cctalk] Re: PT-68K

2022-12-28 Thread Will Cooke via cctalk
> On 12/28/2022 6:21 PM CST Chris via cctalk wrote: > > > I do seem to recall some off the wall looking case in the articles. I'm not > going to reread them right now. I was under the misconceived assumption these > would all be foumd in such a case. > Apparently they sold a LOT of them, a

[cctalk] Re: PT-68K

2022-12-28 Thread Will Cooke via cctalk
/28/2022 4:02 PM CST Chris via cctalk wrote: > > > That's only page 1 lol. > > Artwork for the board/s never was published as I recall. I wonder if he still > has it. > On Wednesday, December 28, 2022, 04:58:34 PM EST, Will Cooke via cctalk > wrote: > >

[cctalk] Re: PT-68K

2022-12-28 Thread Will Cooke via cctalk
> On 12/28/2022 3:36 PM CST Chris via cctalk wrote: > > > What was the name of Steve Ciarcia's outfit, Micromint? I see no entries for > that. That bizarro-world IBM compatible he offered years ago is insane enough > to love. Want to build me one. His company was Micromint. The computer w

[cctalk] Re: PT-68K

2022-12-27 Thread Will Cooke via cctalk
> On 12/27/2022 9:57 PM CST Will Cooke via cctalk wrote: > > > > On 12/27/2022 9:52 PM CST Bill Degnan via cctalk > > wrote: > > > > > > Which issue of Radio Electronics? > > Bill > > > I don't know which issues it&#

[cctalk] Re: PT-68K

2022-12-27 Thread Will Cooke via cctalk
> On 12/27/2022 9:52 PM CST Bill Degnan via cctalk > wrote: > > > Which issue of Radio Electronics? > Bill > I don't know which issues it's in, but they are all here: https://worldradiohistory.com/Radio_Electronics%20_Master_Page.htm

[cctalk] Re: PT-68K

2022-12-27 Thread Will Cooke via cctalk
> On 12/27/2022 9:36 PM CST Chris via cctalk wrote: > > > Those are for a different board. Maybe close enough? > If you read the description it says the only difference is the clock chip, which I believe is "fully" compatible.

[cctalk] Re: PT-68K

2022-12-27 Thread Will Cooke via cctalk
boot eprom download -- scroll down https://peripheraltech.com/PT68K1A.htm > On 12/27/2022 9:04 PM CST Chris via cctalk wrote: > > > What will you do for firmware? I do believe the developer was around, maybe > still is. But wanted an enormous amount of money. > On Tuesday, December 27, 2022,

[cctalk] Re: PT-68K

2022-12-27 Thread Will Cooke via cctalk
http://peripheraltech.com/PT68K2 > On 12/27/2022 8:58 PM CST Jim Brain via cctalk wrote: > > > On 12/27/2022 8:47 PM, Chris via cctalk wrote: > > It's a IBM PC form factor 68000 based project that was featured in Radio > > Electronics. Anyone remember it or even know what I'm talking about?

[cctalk] Re: looking for a laptop

2022-12-23 Thread Will Cooke via cctalk
> On 12/22/2022 10:55 PM CST Chris via cctalk wrote: > > > Anyone partimg with some dang-old thing? It has to work. I'm leaning towards > a mono screen. I'm leaning against Zeniths, got 2 Minisports. But anything is > possible. > > IBM produced a Kanji subbish laptop some years ago. I want

[cctalk] Re: [SPAM] Re: what is on topic?

2022-12-22 Thread Will Cooke via cctalk
> On 12/22/2022 8:45 PM CST Glen Slick via cctalk > > Shirley none of you are serious about a 32-bit (at least partially) > operating system being able to execute on a 286 processor. > > You couldn't even run Windows 3.1 in Enhanced mode on a 286 processor. > > > Well, there's always Linux o

[cctalk] Re: Replacing NiCd with NiMH in a pro way.

2022-12-22 Thread Will Cooke via cctalk
> On 12/22/2022 4:34 PM CST Chuck Guzis via cctalk > wrote: > > That's not to say that Li-ion cells are without their quirks. I > recently almost discarded a AA-sized 14500 cell because the output > voltage had suddenly dropped to the point where none of my chargers > would even see it. So I

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