On 2025-01-17 8:46 a.m., Paul Koning wrote:
As for ALGOL, I know that Burroughs ALGOL (which is an extended ALGOL-60) has separate
compilation, through a linker called "Binder". There is even a Binder for
PDP-11 ALGOL, though I haven't tried it. PDP-11 ALGOL looks very much like a 16-bit
de
On 2025-01-17 7:59 a.m., Jon Elson via cctalk wrote:
Pascal is really sort of a dialect of Algol, so I thought this was
somewhat on topic.
That is the DARK side of computing, Real computers are found in the
BATCAVE and can even run ALGOL 58. (batman 1967) :)
http://www.starringthecomputer.co
On 2025-01-15 5:17 p.m., David Wise via cctalk wrote:
Pretty sure it does stop, if it runs out of addend and there’s no carry.
I think being dumb is the smart thing to do.
On 2025-01-14 6:29 a.m., Fred Cisin via cctalk wrote:
Floppies were later used for data-entry (1973, 33FD for 3740). In those
days, data entry was for "mainframes". That was the "first" to use the
soft sectored format, which became the "standard". ("3740 SSSD format")
It held same data as 3
On 2025-01-13 9:33 p.m., Fred Cisin via cctalk wrote:
FORTRAN was a dead end, both in syntax (line-oriented, line numbers) and
semantics (common blocks, static arrays, very poor string support).
Fortran 2025, the sixth edition, is rather different from 1956.
But, a real programmer can write
On 2025-01-13 6:55 p.m., Joseph S. Barrera III via cctalk wrote:
I would expect universal condemnation for anyone who would ask if FLACC
were designed for floppies.
Did mainframes ever have a floppy option?
Do any copies exist and what was the meduium?
On 2025-01-13 4:00 p.m., David Wade via cctalk wrote:
More like not enough actual memory. You can fit an acceptable basic into
a 4K ROM so it will work without a disk drive.
Its an interpreter so can do checks as you type it in.
Its far easier to learn than Algol.
8K ROM got you APL.
On 2025-01-13 3:10 p.m., Martin Bishop via cctalk wrote:
Ben
I shall simply comment that for a useless language it did a lot of good, signal
processing, work for me all but 50 years ago
I never said it was bad, just kept being delayed by politics.
As an example, you could define matrix ope
On 2025-01-13 12:18 p.m., Brent Hilpert via cctalk wrote:
I used AlgolW on MTS at UBC in ’78 as a CS undergrad.
Still have the textbook “FANGET AN - an algolw primer”, and my greenbar listings
(but threw out the box of batch cards some years go, lol).
I rather liked algol, the course work moved
On 2024-12-13 4:54 p.m., hupfadekroua via cctalk wrote:
Look at https://winworldpc.com/library/operating-systems
But the problem with privately operated sites could be, that they might vanish
at some point.
Andreas
And how is that different from a Commercial Site?
Geo-cities comes to mind.
Th
On 2024-12-10 6:42 p.m., Mike Katz via cctalk wrote:
Or, more importantly, are we all living in a VR?
What is reality?
On 12/10/2024 7:21 PM, Rick Bensene via cctalk wrote:
Been waiting 45 years for the new IBM OS. Not holding my breath. :)
Ahhh...but are you sure we're all not already r
On 2024-12-10 12:13 a.m., Tom Hunter via cctalk wrote:
If this were my project, I would read the VT100 manual and design and
implement a serial driver and basic text window library from scratch
running on the bare hardware. It wouldn't be more than 1000 lines of C,
more likely something like 500
What about porting the old share-ware window libraries for dos?
On 2024-12-04 12:14 p.m., Nigel Johnson Ham via cctalk wrote:
On 2024-12-04 14:09, Tony Duell wrote:
On Wed, Dec 4, 2024 at 7:06 PM Nigel Johnson Ham via cctalk
wrote:
[6809]
I agree. The user stack pointer was a killer feature.
I like(d) the progam counter relative addressing mode along with
On 2024-11-16 2:43 p.m., Mike Katz via cctalk wrote:
Think of how much better the state of the microprocessor would be IBM
had chosen the 68000 Linear Architecture rather than the 8086
Segment:Offset with separate I/O instructions and only 1 interrupt
architecture.
I don't mean to start a hug
On 2024-11-06 12:28 p.m., Brent Hilpert via cctalk wrote:
The old common standard for a mains stroboscope was a neon bulb (+resistor).
They are still widely available, simple and inexpensive.
No, they are not very bright and need some shading or otherwise reduced ambient
light, but for a tool of
On 2024-11-04 7:23 a.m., Murray McCullough via cctalk wrote:
A lot happened in the computer industry in early Nov. in the past: Intel's
x86 PC architecture was born; lo & behold Windows ME was released upon the
world; for the corporate in us the IBM Portable Computer was introduced.
The PC world
On 2024-11-03 9:37 p.m., Tony Duell via cctalk wrote:
On Mon, Nov 4, 2024 at 4:06 AM Mychaela Falconia via cctalk
wrote:
Paul Koning wrote:
1. Show a one-word PDP-11 program that writes all of memory, in reverse order.
MOV -(PC),-(PC)
Does that work on all models of PDP11?
I had an idea
On 2024-10-24 4:35 p.m., Bill Gunshannon via cctalk wrote:
And yet, Minix ran on the 8088.
NO the PC, and even then it was developed under a UNIX emulator.
Some where I read, wen ported to the PC it would randomly crash.
This was later found to a case of undocumented irq service routine
for m
On 2024-10-24 3:21 p.m., Sellam Abraham via cctalk wrote:
On Thu, Oct 24, 2024 at 1:45 PM Fred Cisin via cctalk
wrote:
The author, presumably a heavy Reddit, TikTok and Facebook user, seemed
to
have never heard about existence of computers before internet, nor about
On Thu, 24 Oct 2024, Jo
On 2024-10-24 11:49 a.m., Joseph S. Barrera III via cctalk wrote:
The author, presumably a heavy Reddit, TikTok and Facebook user, seemed to
have never heard about existence of computers before internet, nor about
Y'all are ignoring CompuServe and that is hurting my feelings :-)
Was all that
On 2024-10-23 8:36 p.m., Doug Jackson via cctalk wrote:
Yes, UUCP was literally a thing, but UNIX was unobtanium in the early
computing eral - The world of the University Minicomputer.
It certainly wasn't even vaguely accessible by a hobbyist running a
Z80 or 6800 in the late 70's.
I vividly re
On 2024-10-20 10:34 a.m., Donald Whittemore via cctalk wrote:
Finally got the program I had a friend write back in 2009 working. I had it
written specifically because I had this disk.
Shades of watching a 2311 working. 😀
http://www.myimagecollection.com/webpics/exercise.mp4
Now, let's do this
On 2024-10-12 7:40 p.m., Jon Elson via cctalk wrote:
On 10/12/24 20:07, Jon Elson via cctalk wrote:
On 10/12/24 16:25, Wayne S via cctalk wrote:
Didn’t all the IBM mainframes use 400hz? Maybe ask the IBMers how
they got 400hz.
Also, can the local power company supply it?
Oh, the IBM 7090 seri
On 2024-10-12 1:47 p.m., Chuck Guzis via cctalk wrote:
On 10/12/24 11:54, Brent Hilpert via cctalk wrote:
I remember summer employment at a drive-in movie theater during my
summers working as a projectionist. Power supply for the DC carbon arc
lamps was supplied by a 40 Hp MG set located in i
On 2024-10-09 2:30 p.m., Fred Cisin via cctalk wrote:
MSX is unknown in USA!
It was for Z80, and the disk format was MS-DOS
I saw some at comdex.
I waited for MSX machines to showup here, but it never happened,
although I did find [and buy] a Yamaha MSX machine from Waite Group, at
John Craig'
On 2024-10-09 4:08 a.m., Liam Proven via cctalk wrote:
On Wed, 9 Oct 2024 at 04:37, ben via cctalk wrote:
Dos also has no subdirectories.
(?)
So did the hundreds of other 8 bit operating
systems.
(??)
The point here, was until hard disks with the PC became common you had
the tiny
On 2024-10-08 6:16 p.m., Doug Jackson via cctalk wrote:
And yet, here we are.
When I built my first system in 1985 as a trainee technical officer,
the *first* thing I did was copy all of the 8" floppies I could from a
donor system onto my 5.25" DSHD drives (1.2MB - The biggest system in
the neig
On 2024-10-08 5:00 p.m., Fred Cisin via cctalk wrote:
On Tue, 8 Oct 2024, roger arrick via cctalk wrote:
I figured he was mistaken, the old 'standard' is SSSD.
Well, that's the CP/M "standard".,
and, admittedly, on my first look at the message, I, too, did a double
take on "double density"
On 2024-10-06 5:07 a.m., Evan Linwood via cctalk wrote:
A Data General MV/8000 emulator beta release is now available from my DG
legacy preservation web site:
This is really something - thanks so much Bruce!
Is there a recommended single board computer for the emulators, or
hardware card
On 2024-10-02 2:52 p.m., bluewater emailtoilet.com via cctalk wrote:
Some PC HD maker offered a drive with a clear top so you could see the heads
moving. I had a friend write a VB program to do random seeks. It was fun to
watch. Still have the drive and the program. Don’t know if the program wi
On 2024-09-30 8:03 p.m., Bob Rosenbloom via cctalk wrote:
On 9/30/2024 6:31 PM, Jon Elson via cctalk wrote:
On 9/30/24 16:23, Paul Koning via cctalk wrote:
One application for devices like that would be vacuum tube power
amplifiers, to delay the high voltage power supply until after the
heater
On 2024-09-30 5:51 p.m., Paul Koning via cctalk wrote:
Another way to use them is to switch a series resistor out of the power supply
input after a few seconds; that is good for capacitor-input filters where the
inrush current is otherwise very high. The 5 second delay may be just that; it
se
On 2024-09-23 7:22 a.m., Peter Corlett via cctalk wrote:
On Thu, Sep 19, 2024 at 03:43:01PM -0500, Doc Shipley via cctalk wrote:
[...]
You should see what a DIP 8250-compatible UART costs...
The venerable 16550 is an 8250-compatible, so that would be $4.47 from
Digikey, plus another couple of
On 2024-09-18 12:29 p.m., Fred Cisin via cctalk wrote:
On Wed, 18 Sep 2024, John via cctalk wrote:
Dunno, what does a box of Cracker Jack cost these days...?
I checked; Amazon has Cracker Jack THREE boxes for $4.53
That's sold by a third party, but fulfilled by Amazon.
I've been told that th
On 2024-09-11 2:18 p.m., Sellam Abraham via cctalk wrote:
On Wed, Sep 11, 2024 at 11:49 AM ben via cctalk
wrote:
Now even a TTL version.
https://hackaday.io/project/190345-isetta-ttl-computer/log/232670progress-of-new-pcb
That link is bad. It is not good.
The link worked fine before the
On 2024-09-11 8:43 a.m., Sellam Abraham via cctalk wrote:
53
On Tue, Sep 10, 2024, 11:03 PM Mark Linimon wrote:
Next week there will be 50 of them o. Ebay for this price.
(looks around the room)
Make that 52.
mcl
But as the ratio of buyers is a complex number. It is often in the
imagi
On 2024-08-17 1:46 a.m., Peter Corlett via cctalk wrote:
On Fri, Aug 16, 2024 at 11:42:01PM -0600, ben via cctalk wrote:
On 2024-08-16 12:11 p.m., Peter Corlett via cctalk wrote:
[...]
From what I can tell of a casual peruse of the documentation of CP/M-68K
and CP/M-86, they support the full
>> By the way, the earth is round...
>
> I'm glad we can agree on this. Of course the Earth is round.
>
> It's also hollow.Oh it is a donut!>
> To try and turn this thread around: I'm looking to make an extended
> memory controller for my pdp8/L. I've got a wire wrap backplane and
> enough cards t
On 2024-08-30 12:00 p.m., Don Stalkowski via cctalk wrote:
Fred Cisin wrote:
We have our own non-theological religious wars, such as vi vs emacs.
TECO
Don
Does anybody use that any more?
On 2024-08-29 1:53 p.m., Antonio Carlini via cctalk wrote:
On 29/08/2024 17:27, Douglas Taylor via cctalk wrote:
The solution is right in front of us. One of us here has to become a
multi-billionaire and create a museum to save all this stuff! Let the
fighting and bickering begin!
Any idea
On 2024-08-29 11:59 a.m., Fred Cisin via cctalk wrote:
Any ideas on how to become a billionaire?
For a few decades, we have been saying that
"We must do whatever it takes to make Bill Gates into a millionaire."
it is called TAX!
On 2024-08-29 10:27 a.m., Douglas Taylor via cctalk wrote:
The solution is right in front of us. One of us here has to become a
multi-billionaire and create a museum to save all this stuff! Let the
fighting and bickering begin!
Any ideas on how to become a billionaire?
Doug
Find a billio
On 2024-08-16 12:11 p.m., Peter Corlett via cctalk wrote:
CP/M was effectively limited to 64KiB because it had no traction outside of
the 8080/Z80 which had a 64KiB address space. To go beyond that limit on
those CPUs involves paging, and some platforms did indeed use paging for RAM
disks and to
On 2024-08-16 8:56 a.m., Peter Corlett via cctalk wrote:
On Thu, Aug 15, 2024 at 01:41:20PM -0600, ben via cctalk wrote:
[...]
I don't know about the VAX,but my gripe is the x86 and the 68000 don't
automaticaly promote smaller data types to larger ones. What little
programming I hav
On 2024-08-15 7:46 p.m., Mike Katz wrote:
That is the reason for the stdint.h file. Where you specify the width
of the variable in bits
Looks like a useless file to me.
I never liked any the standards made to C after K&R. Seems more driven
by the latest crappy hardware intel makes, than a lang
On 2024-08-15 7:52 p.m., cz via cctalk wrote:
True, but back then things were designed to fixed and tested.
Sure, and they can still be fixed, transistors are quite common. But
after repairing a pair of pdp8/L's, and a pdp8/I I really have to say
it's a bit of a serious job. And the 10 is lik
On 2024-08-15 7:39 p.m., cz via cctalk wrote:
Eh, it will go for what it goes. Try and keep in mind how tough it was
to keep a 1010 running in 1995. Then add 30 years to that.
The thought of tracking down a bad flip flop on a thousand flip chip
boards really makes me think "yow".
True, but b
On 2024-08-15 6:46 p.m., Fred Cisin via cctalk wrote:
When I was teaching C, it was sometimes quite difficult to help students
who had firm assumptions about things that you can'r assume. Such as
the sequence of operations in the multiple iterations examples that we
both used. I tried despera
On 2024-08-15 11:00 a.m., Paul Koning via cctalk wrote:
The short answer is "it's historic and manufacturers have done it in different
ways".
You might read the original paper on the topic, "On holy wars and a plea for
peace" by Danny Cohen (IEN-137, 1 april 1980):
https://www.rfc-editor.org
On 2024-07-30 2:55 p.m., CAREY SCHUG via cctalk wrote:
I don't think anaybody has reposted this one on this thread.
Microsoft release Windows CE, which bombed
Then Windows ME, another bomb
Finally Window NT, a moderate success
So they combined them but still can't get windows CEMENT to comple
On 2024-07-29 10:09 p.m., Fred Cisin via cctalk wrote:
On Mon, 29 Jul 2024, Rod Bartlett wrote:
I found Tim Peterson's old blog a while back which contained some
interesting tidbits about the history of DOS from the original author.
http://dosmandrivel.blogspot.com/
I did find one unimportant
On 2024-07-23 1:31 p.m., Paul Koning via cctalk wrote:
On Jul 23, 2024, at 2:09 PM, Gavin Scott wrote:
On Tue, Jul 23, 2024 at 7:11 AM Paul Koning via cctalk
wrote:
It's interesting that the designers of ARRA spoke about what they did, and were quite
honest about their mistakes. Quite re
On 2024-07-23 12:09 p.m., Gavin Scott via cctalk wrote:
On Tue, Jul 23, 2024 at 7:11 AM Paul Koning via cctalk
wrote:
It's interesting that the designers of ARRA spoke about what they did, and were quite
honest about their mistakes. Quite refreshing. Unfortunately that narrative is in
Dutch
On 2024-07-22 8:41 p.m., Ethan Dicks via cctalk wrote:
On Mon, Jul 22, 2024 at 9:05 PM Igor via cctalk wrote:
Me and my buddy are building an Apple I replica, for now successfully.
Recently we have tested the video signal :) However, we are having big
problems (as you can imagine) with finding
On 2024-07-22 7:06 p.m., Fred Cisin via cctalk wrote:
Besides slide rules, etc.
If you have an analog computer consisting of a 5 gallon bucket, and a 3
gallon bucket, and plenty of water available, What are the steps for a
PROGRAM to get a result of 4 gallons of water in the 5 gallon bucket?
On 2024-07-21 6:43 p.m., Paul Berger via cctalk wrote:
I would say digital a common relay has two states open or closed, when
you energize the coil it draws in the armature which will open or close
the relay's contacts.
Konrad Zuse built his first digital computer using largely relay logic
i
On 2024-07-21 8:29 a.m., Sellam Abraham via cctalk wrote:
I'm pretty sure the book included "Working" in the title because who wants
to build a non-working computer?
Also, mechanical analog computer = slide rule :)
Sellam
A working computer, is one that makes money?
Ben.
On 2024-07-20 10:41 p.m., Tony Duell via cctalk wrote:
On Sun, Jul 21, 2024 at 3:08 AM Steve Lewis via cctalk
wrote:
What I meant was that in the title of the book they use "digital computer"
and I wonder if there was ever a book describing a mechanical "analog
computer" - and what they might
On 2024-07-02 6:42 p.m., Ali via cctalk wrote:
Totally opposite. GSP rates from the US to UK were crazy cheap.
I sold a bunch of items. Compared to USPS rates they were 1/3 often.
Again I am talking about getting stuff from the UK to the US. Generally
speaking it seems like shipping from th
On 2024-07-02 1:05 p.m., Fred Cisin via cctalk wrote:
On Tue, 2 Jul 2024, Adrian Godwin via cctalk wrote:
Chinese to UK shipments are still relatively cheap but have also risen
somewhat with more sellers charging for postage.
eBay Chinese shipping seems impossibly low.
Keep it that way, I ne
On 2024-07-01 6:31 p.m., Mike Stein via cctalk wrote:
I've had the same experience with folks in Australia & NZ,
accumulating stuff in the US until there's enough to ship it down
under.
I suspect today still shipping is better than it was in the 70's.
It is just nobody wants to box and crate the
On 2024-07-01 6:04 p.m., Mike Stein via cctalk wrote:
Hey, I sent you a motherboard from Toronto all the way to the South
Pole, remember? Well, OK, via San Francisco, but It wasn't too bad
then.
Hey there must be lots of vintage stuff at the south pole
nobody ships stuff back. :)
On 2024-07-01 3:06 p.m., Ethan Dicks via cctalk wrote:
On Mon, Jul 1, 2024 at 7:58 AM Liam Proven via cctalk
wrote:
... vendors mostly
refuse to ship internationally and buyers won't look at stuff that's
abroad.
If you aren't used to customs declaration forms, it can be a pain.
Back in the 80
On 2024-06-27 9:22 a.m., Jim Brain via cctalk wrote:
The idea of leaving these items behind and thinking our loved ones will
see any value from selling is ludicrous, though, and I question the
sanity of those who seriously believe this. While I am sure there are
exceptions to the rule, I do no
On 2024-06-13 4:30 p.m., Dave Dunfield via cctalk wrote:
I think the 86 came at a good time/place because the 8080 series had become
quite popular in microcomputers
and designers were feeling the limits of a 8-bit architecture - the 86 provided
a fairly powerful (for the time) and
easy upgrade
On 2024-06-13 12:06 p.m., Paul Koning via cctalk wrote:
On Jun 13, 2024, at 2:00 PM, Chuck Guzis via cctalk
wrote:
On 6/13/24 10:32, Paul Koning via cctalk wrote:
Huh? There is no direct connection between word length, register count, and
pipeline length.
Indeed. There are architecture
On 2024-06-13 11:32 a.m., Paul Koning via cctalk wrote:
e up an entire chassis, 750-ish logic modules.
You never see a gate level delays on a spec sheet.
Our pipeline is X delays + N delays for a latch.
Gate level delays are not interesting for the machine user to know. What is interesting
On 2024-06-13 9:40 a.m., Jon Elson via cctalk wrote:
AACK! Sorry, that was supposed to be F-16!
The divide bug strikes again.
Jon
What would one use today instead of the 586?
Ben.
On 2024-06-12 8:17 p.m., Dennis Boone via cctalk wrote:
> I wouldn't think it would work much better than a light bulb, though.
Load it up with a wide range tuner, and you could probably make contacts
across three states, though, just like the light bulb. :)
De
Wow the worlds cheapest RTTY s
On 2024-06-10 10:05 a.m., Joshua Rice via cctalk wrote:
On 10/06/2024 00:28, ben via cctalk wrote:
The CPU Price it keeps going UP ... :(
8008 $25 1975
8080 $75 MITS kit 1975
8088 $125
386 $130 (286 $20)
Hardly, you can pick up a new CPU today for less than $50. It's not
going
On 2024-06-10 10:18 a.m., Joshua Rice via cctalk wrote:
On 10/06/2024 05:54, dwight via cctalk wrote:
No one is mentioning multiple processors on a single die and cache
that is bigger than most systems of that times complete RAM.
Clock speed was dealt with clever register reassignment, pipelinin
On 2024-06-09 11:01 a.m., Chuck Guzis via cctalk wrote:
On 6/9/24 08:40, Murray McCullough via cctalk wrote:
Intel introduced to the world the x86 processor: the CISC technology still
with us. So what has changed other than speed and upward development?
The Internet?
Really, it's always been
On 2024-06-09 10:59 a.m., Milo Velimirović via cctalk wrote:
Word length. :)
On Jun 9, 2024, at 10:40 AM, Murray McCullough via cctalk
wrote:
Intel introduced to the world the x86 processor: the CISC technology still
with us. So what has changed other than speed and upward development?
Happ
On 2024-05-28 5:45 p.m., Chuck Guzis via cctalk wrote:
On 5/28/24 16:29, ben via cctalk wrote:
On 2024-05-28 1:23 p.m., John via cctalk wrote:
So what, then, consitutes a Real Operating System, and why?
I am grumpy about OS's like MSDOS, in that programs kept by passing
DOS to handle s
On 2024-05-28 1:23 p.m., John via cctalk wrote:
So what, then, consitutes a Real Operating System, and why?
I am grumpy about OS's like MSDOS, in that programs kept by passing
DOS to handle screen, and serial IO.
I also favor OS's that don't require one to build a file control block.
On 2024-05-28 10:58 a.m., Tony Duell wrote:
On Tue, May 28, 2024 at 5:56 PM ben via cctalk wrote:
--First Appartment I lived in had gas refrigerator/stove AND still had some
fixtures for gas lighting. washer/dryer/furnace/hot water were all shared in
basement, real screw in fuses (not
Same concept as, if one guy living in a formerly industrial loft has water cooling, and 300 amp 3
phase power available, that does NOT make any computer requiring that "personal". For
that I'd say must be able to plug into 50% of all homes, but realize more quibbling might apply
there, suc
On 2024-05-28 8:43 a.m., CAREY SCHUG via cctalk wrote:
so if ONE person maybe living in a loft formerly industrial space has water
cooling, and 200 amp 3 phase in their house, that automatically makes EVERY
computer using that power personal computer eligible?
--First Appartment I lived in had
On 2024-05-27 6:23 a.m., Christian Corti via cctalk wrote:
On Sat, 25 May 2024, Chuck Guzis wrote:
Offhand, if I were King of the World, I'd immediately eliminate from
competition those computers that cannot be run from a US 120 volt 15 amp
wall receptacle. The rationale being that anything th
On 2024-05-26 2:01 p.m., Chuck Guzis via cctalk wrote:
On 5/26/24 11:11, ben via cctalk wrote:
On 2024-05-26 10:56 a.m., Fred Cisin via cctalk wrote:
I did use a CP/M machine once, but the 8" drive was a bit sticky.
You rap the drive to get it unstuck, but if you rap it too hard
the ma
On 2024-05-26 10:56 a.m., Fred Cisin via cctalk wrote:
On Sun, 26 May 2024, ben via cctalk wrote:
I think the most important thing for a Personal Computer,
is the average Joe, can afford and use it. The second thing is
to have ample memory and IO to run useful programs. The basic Apple
I,II
On 2024-05-25 3:57 p.m., Chuck Guzis via cctalk wrote:
On 5/25/24 13:41, Fred Cisin via cctalk wrote:
On Sat, 25 May 2024, Chuck Guzis via cctalk wrote:
. . . or 100V or 220V in locations where those are the standard for
household residential wiring.
Woulld not want to automatically exclude U
On 2024-05-25 5:42 p.m., Mike Katz via cctalk wrote:
I'm sorry but I beg to differ with you here. The DEC PDP line of single
user interactive computers (as opposed to batch processing only systems)
started in the late 1950's and early 1960's and spawned many generations
as well as copies and
On 2024-05-20 12:16 p.m., Will Cooke via cctalk wrote:
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,
Don't get your mind get old. It’s a choice.
My mind is fine, it the eyes that are going.
Screens are getting bigger and text is getting smaller.
I must be dreaming that.
On 2024-05-19 9:14 a.m., Tarek Hoteit via cctalk wrote:
A friend of a friend had a birthday gathering. Everyone there was in their
thirties, except for myself, my wife, and our friend. Anyway, I met a Google
engineer, a Microsoft data scientist, an Amazon AWS recruiter (I think she was
a recr
On 2024-05-10 1:01 p.m., Chuck Guzis via cctalk wrote:
There have been some minor skirmishes in the MCU world over what
language should be used when programming.
EASY! OCTAL! If it worked on the 8 it is good enough for me.
C/C++ is very much top dog, probably because the development suites a
On 2024-05-09 1:23 p.m., John via cctalk wrote:
Pascal never really made it on the microcomputer platform did it?
I can be convinced otherwise but it seems like microcomputing Pascal
was more of a staging environment for then upload into a production
mainframe/mini
Pascal was the language of
On 2024-05-07 9:53 p.m., Tony Duell via cctalk wrote:
Anyway, some of their engineers were setting up for an
exhibition/demonstration when they realised they'd forgotten to bring
any speaker cable. No problem, one of them goes to the local 'DIY
Shed' (large hardware store) and buys some normal m
On 2024-05-07 5:51 p.m., Chuck Guzis via cctalk wrote:
On 5/7/24 15:21, Fred Cisin via cctalk wrote:
How difficult is it to measure and compare "With/Without" signals?
If you peruse the old Bob Pease articles on "Electronic Design"
magazine, I believe more than once, he alluded to a proposed
On 2024-05-02 4:55 a.m., Liam Proven via cctalk wrote:
On Thu, 2 May 2024 at 00:51, Fred Cisin via cctalk
wrote:
What would our world be like if the first home computers were to have had
APL, instead of BASIC?
To be perfectly honest I think the home computer boom wouldn't have
happened, and
On 2024-05-01 11:26 p.m., Ali via cctalk wrote:
Don't forget to bring a towel.
Sellam
The fact that we all probably got that reference is the amazing part.
-Ali
What no white mouse trap!
On 2024-04-27 2:29 p.m., Paul Koning via cctalk wrote:
On Apr 27, 2024, at 1:15 PM, Tarek Hoteit via cctalk
wrote:
I came across this paragraph from the July 1981 Popular Science magazine
edition in the article titled “Compute power - pro models at almost home-unit
prices.”
“ ‘Personal-c
https://www.youtube.com/watch?v=iJeu3LCo-6A
Dr who ads for prime.
On 2024-04-24 2:55 p.m., Gordon Henderson via cctalk wrote:
On Wed, 24 Apr 2024, David Brownlee via cctalk wrote:
If we're talking about machines with a Z80 and 6502, it would be
remiss not to link back to the machine mentioned in the original
message - the BBC micro, with its onboard 6502 and
On 2024-04-23 8:40 p.m., Chuck Guzis via cctalk wrote:
On 4/23/24 17:18, Bill Gunshannon via cctalk wrote:
On 4/23/2024 8:06 PM, Fred Cisin via cctalk wrote:
Did the Dimension 68000 (a multi-processor machine) have Z80 and 6502?
Couldn't Bill Godbout's CPU-68K board co-exist with other CPU
On 2024-04-22 1:02 p.m., Chuck Guzis via cctalk wrote:
I'd like to see a Z80 implemented with UV-201 vacuum tubes... :)
--Chuck
Real computers use glow tubes like the NE-2 or the NE-77.:)
>One other factor is that RISC machines rely on simple operations
>carefully arranged by optimizing compilers (or, in some cases,
>skillful programmers). A multi-step operation can be encoded in a
>sequence of RISC operations run through an optimizing scheduler more
>effectively than the eq
On 2024-04-21 5:26 p.m., Chuck Guzis via cctalk wrote:
On 4/21/24 12:11, ben via cctalk wrote:
I keep finding I still need 74XX just for having 10 TTL loads,
and 74LSXX just does not have the power.
Ever try BiCMOS chips? IIRC, the 74ABTxxx will drive loads of up to 60
ma, far in excess of
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