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
On 2024-04-21 3:27 p.m., Jerry Weiss wrote:
While intention might have been to last XX years, I am becoming
increasingly pessimistic about longevity of most electronic devices. A
crystal radio with an open air capacitor seems like the only good bet.
Between electrolytic capacitor aging challe
On 2024-04-21 8:45 a.m., Mike Katz wrote:
As for the RP2040 being cheap crap, I beg to differ with you. It is a
solid chip, produced in 10s of millions at least. And, I would bet, a
better quality chip than your Z-80, if due only to improved IC
manufacturing technologies.
The pi looks like
https://www.youtube.com/watch?v=YXTQvlkYJvI&t=4s
On 2024-04-20 8:33 p.m., Mike Katz via cctalk wrote:
For anything more sophisticated than your coffee pot the RP2040 from
Raspberry Pie is a fantastic little chip, dual core 133 MHz Cortex M0+
with 8 PIO engines, 264K of RAM, ADC, UART, SPI, I2C all for under a
dollar. I designed a fully funct
On 2024-04-20 12:20 p.m., Jim Brain via cctalk wrote:
On 4/20/2024 1:16 PM, Wayne S wrote:
Who still uses the Z80 line for new projects? Wouldn’t it be easier
and cheaper to just use an Arduino or Raspberry Pi?
Given the list you're posting on... :-)
Jim
True, but the Z80 is 5 volt logic. St
On 2024-04-19 8:07 p.m., Fred Cisin via cctalk wrote:
Gee! Have sales gone down?
One more reason to use the 8080 subset when writing CP/M programs.
There still are RADIO SHACK 8080A's still on ebay, with @RARE@ prices.
NO thank you, z80's are the way to go.
Aren't there already some license
On 2024-04-16 10:34 a.m., Van Snyder via cctalk wrote:
On Tue, 2024-04-16 at 12:38 +0100, Adrian Godwin via cctalk wrote:
901B is the first pocket calculator I remember - I don't know if there were
earlier ones.
The first one I remember is the HP Digital Slide Rule, about 1965. Six
digits. $60
Did any one ever use a keyboard to magtape as input device?
On 2024-04-12 7:23 p.m., Paul Koning via cctalk wrote:
On Apr 12, 2024, at 5:54 PM, CAREY SCHUG via cctalk
wrote:
...
my favorite terminal 3190 that was neon gas, so monochrome, but could take 5
addresses, and flip between 62 lines of 160 characters (always there), to 4
terminals of 62x80
On 2024-04-09 8:53 p.m., Murray McCullough via cctalk wrote:
I had not realized the IBM 360 was 60 yrs. old this month. I worked on such
a computer in the late 60s in Toronto. What one could do with 8 Kbytes of
ram was remarkable!
Happy computing
Murray 🙂
Real time sharing, not a 16K PDP 8?
cure email.
On Sunday, April 7th, 2024 at 4:14 PM, Harald Arnesen via cctalk
wrote:
ben via cctalk [07/04/2024 20.05]:
I don't think bottles would be ship able. Now a keg of beer might be.
Or a least the old oak kegs you read in stories.
No problem to ship beer bottles, just pack them
On 2024-04-07 5:57 a.m., Christian Groessler via cctalk wrote:
On 4/6/24 5:37 PM, Mike Norris via cctalk wrote:
Additional
I would like £5 beer money for this one please!
Writing Open VMS Alpha Device Drivers in C - Margie Sherlock/Leonard
Szubowicz
I'd take it.
I can send you beer money, o
On 2024-04-06 9:40 a.m., Phil Budne via cctalk wrote:
Paul Koning wrote:
Yes, and some emulations have done this, such as Phil Budne's famous work in
SIMH.
Famous?? I'm famous???!!!
To be fair, I started with Douglas W. Jones' PDP8 Emulator.
Which reminds me of:
If I have seen farth
On 2024-03-30 9:49 p.m., Tom Hunter via cctalk wrote:
Sorry I mistyped. I meant Mouser and Digikey, not Amazon and Digikey.
Well the searches suck on both. Digikey is bad for having 0 stock
listings. Digikey is turning out to be more the Radio Shack for parts.
On 2024-03-30 8:53 p.m., Glen Slick via cctalk wrote:
You can also buy parts direct from TI, for example they currently show
around around 3000 SN74LS04N parts in stock.
https://www.ti.com/product/SN74LS04/part-details/SN74LS04N
The prices for that part match the current Mouser prices of $0.6
On 2024-03-30 8:23 p.m., Jonathan Chapman via cctalk wrote:
Been lurking for a while, but this topic hits true with some recent
experiences. I would not hesitate to buy most common digital ICs on Amazon
or ebay
I mean we had to stop buying 7400 series from Jameco over counterfeits, so it's
def
On 2024-03-30 6:10 p.m., Jonathan Chapman via cctalk wrote:
Standard TTL 74XXX is drying up rather quickly. Futurlec still has some
TTL but 7404s are all gone. Even LS is hard to find.
Ours comes from Mouser, between two part #s they have over 7,000 74LS04s in DIP
packaging in stock. Didn't ch
On 2024-03-30 4:27 p.m., Will Cooke via cctalk wrote:
I'm not clear on whether you mean some specific chips or in general, but here
is my experience.
For things that are in current production or recently discontinued, I have had
extremely good luck with Chinese suppliers either from Amazon or
On 2024-03-28 5:50 p.m., Fred Cisin via cctalk wrote:
OTOH, spammer mailing lists, and leaked personal and trade secrets seem
to last forever.
You forgot Mickey Mouse.
--
Grumpy Ol' Fred ci...@xenosoft.com
On 2024-02-27 3:09 p.m., Paul Koning via cctalk wrote:
On Feb 27, 2024, at 4:49 PM, CAREY SCHUG via cctalk
wrote:
Religion warning: I was a mainframer. Since at any practical budget, they can
only be emulated,
Dumpster diving is a 0 dollar budget.
People could afford the APPLE II, 80
On 2024-02-27 1:13 p.m., 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..
I can't tell
On 2024-02-27 9:20 a.m., CAREY SCHUG via cctalk wrote:
It's not a cassette, but the PB-440 (Pitney-Bowes), renamed Raytheon 440 and its upgrade
the raytheon 520 had a large reel paper tape with a bidirectional read and an
"operating system" Load the os, say we want to run fortran, spin down to
On 2023-12-20 11:16 a.m., Rich Alderson via cctalk wrote:
I wish you all a joyous Winter Solstice Festival, however you may choose to
celebrate it.
I like the day after, the days get longer again.
Rich
Ben, in the dark.
On 2023-12-20 11:16 a.m., Rich Alderson via cctalk wrote:
Happy DEC-20 Day!
My late friend Mark always noted that TOPS-20 (and the DECSYSTEM-20 on which it
runs) was a great improvement on its successors.
I wish you all a joyous Winter Solstice Festival, however y
On 2023-11-22 6:53 p.m., Chuck Guzis via cctalk wrote:
On 11/22/23 16:47, Fred Cisin via cctalk wrote:
Yup. I have vivid memories of the Intel rep telling us that not only
was the 8086 compatible with the 8085, conversion could be automated
through their ISIS-II based conversion program--and
On 2023-11-20 5:36 p.m., Murray McCullough via cctalk wrote:
On Nov. 15, 1971 Intel commercially released the 4004 microprocessor which
some consider to be the first. Nonetheless, even if not in agreement, it
made possible the instrument which drives the classic-computing industry or
at the very
On 2023-11-07 7:05 p.m., Paul Koning via cctalk wrote:
On Nov 7, 2023, at 8:49 PM, Paul Koning wrote:
Hi... I'm seriously rusty on official RSTS installation procedures. I'm
trying to install DEC C using the C_V1_2.tap file from the bitsavers
bits/DEC/pdp11/rsts directory. It's actually
On 2023-10-02 4:36 p.m., Rick Bensene via cctalk wrote:
Mike wrote:
...
Gawd, I still remember those numbers, some 60 years later; so why can't I
remember my thirty-year old cell phone number...
Because you rarely, if ever, call it. ;-)
I never could figure out how to call myself, so I have
On 2023-10-02 1:15 p.m., Fred Cisin via cctalk wrote:
On Mon, Oct 2, 2023 at 5:18 AM Stefan Skoglund via cctalk
wrote:
The main problem with that lorry hurtling down the freeway is
latency.
I need to move 1 PB . how long will it take filling and packing
enough IBM LTO-9 tapes to sen
On 2023-09-23 12:36 p.m., Paul Koning via cctalk wrote:
On Sep 22, 2023, at 9:30 PM, Martin Bishop
wrote:
Paul
I endorse your point regarding Lattice's gouging. Support for anything prior to
the XO parts now costs a significant premium. Their XO2 parts are the most useful
to this commu
On 2023-09-22 3:16 p.m., Mike Katz via cctalk wrote:
Martin,
The debug board will need to have the following functionality:
1. Read and write to/from memory when the CPU is running using one
cycle data break (DEC's version of DMA for the PDP-8). Single Cycle
DMA requires some interestin
On 2023-09-22 12:34 p.m., emanuel stiebler via cctalk wrote:
On 2023-09-22 12:04, Mike Katz via cctalk wrote:
I'm working on the design for an Omnibus (PDP-8/E) debug board and I
am not very good at circuit design. I know there are programs that
will compile something that looks like C into Ve
FPGA's tend to be ALL 3.3 volts or less today. Cmos 22v10's are nice
chips to program that is still working at 5 volts. FPGA's also have
high learning curve to catch the bugs and gotya's.
I got tl866 ii + programer and it works great under windows, with wincupl.
On 2023-09-11 10:43 a.m., Paul Koning via cctalk wrote:
On Sep 10, 2023, at 6:24 PM, Fred Cisin via cctalk
wrote:
On Sun, 10 Sep 2023, Will Cooke via cctalk wrote:
I make an official motion that Fred write his own "Everything I Know About Floppy
Disks" page / book /encyclopedia.
I suspect
1 - 100 of 535 matches
Mail list logo
