And on the humble Univac 418 we had the FH330. I have a picture of them
somewhere
On April 15, 2024 1:47:01 p.m. EDT, Van Snyder via cctalk
wrote:
>On Mon, 2024-04-15 at 09:25 -0400, Paul Koning via cctalk wrote:
>> Are drums usually word addressable? That doesn't seem necessary, not unless
I have two watches that sync to WWVB and they always agree with CHU on HF and a
ham rig that syncs to GNSS. So I think it is bang on or there is a government
conspiracy to make us late for work 樂
On January 14, 2024 2:49:19 p.m. EST, Bill Gunshannon via cctalk
wrote:
>
>This is kind
>From memory, when I looked into doing this I found that the RQDX3 BA23
>distribution panel maps DS2 from the contriller to all DS pins on the B cable
>of one drive and DS3 to all DS lines on the other. I never did test the theory
>though. I did not get a special adapter from decromancer.
Hope
oints: (1) Cheaper than DEC and (2) Exact drop in replacement for
>the DEC AAV11-C.
>
>Doug
>
>On 7/11/2023 12:33 PM, Nigel Johnson via cctalk wrote:
>> You might try looking for Data Translation products. I know some of the
>> later ad and da modules were made by them for DEC
You might try looking for Data Translation products. I know some of the later
ad and da modules were made by them for DEC
On July 11, 2023 12:28:43 p.m. EDT, Douglas Taylor via cctalk
wrote:
>The DACs on the AAV11-C board are not marked in any revealing way. I think
>they are Burr Brown
...@ieee.org
On 2021-03-05 12:12 p.m., emanuel stiebler via cctalk wrote:
> On 2021-03-05 11:57, Doc Shipley via cctalk wrote:
>> On 3/5/21 10:51, Nigel Johnson via cctalk wrote:
>>> Speaking of badges, I have a BA23 that doesn't have one. It was an 11/73
>>> but that bad
., Doc Shipley via cctalk wrote:
> On 3/5/21 10:51, Nigel Johnson via cctalk wrote:
>> Speaking of badges, I have a BA23 that doesn't have one. It was an 11/73
>> but that badge is gone, and I am trying to repair an 11/93 to go in
>> there.
>>
>> Does anybody have
Speaking of badges, I have a BA23 that doesn't have one. It was an 11/73
but that badge is gone, and I am trying to repair an 11/93 to go in there.
Does anybody have a spare 11/73 badge for the BA23 that could be used as
a model for a printed version that says 11/93? I don't believe there
ever
On 2021-02-24 11:06 a.m., Jon Elson via cctalk wrote:
> On 02/24/2021 08:06 AM, Chris Zach via cctalk wrote:
>>
>> Sort of. MASSBUS was a very overpriced and to be honest weird system
>> that DEC developed in an attempt to be like IBM and charge very high
>> markups for generic peripherals.
Has anybody got a DCV54 that they are using?
I am trying to get one working with David Gasswein's mfm board and
having no luck.
The controller is working fine with a standard floppy as an RX33, even
boots the MicroVAX from it. But on-board diagnostics cannot format or
even recognise the mfm
The TK25 IIRC
Nigel
Nigel Johnson, MSc., MIEEE, MCSE VE3ID/G4AJQ/VA3MCU
Amateur Radio, the origin of the open-source concept!
Skype: TILBURY2591 nw.john...@ieee.org
On 2021-02-12 11:19 a.m., Al Kossow via cctalk wrote:
>
> This is a mystery.
> What DEC system used a CDC Sentinel DC300
1 9:40 AM, Nigel Johnson via cctalk wrote:
>> Doesn't ATA transfer the data in parallel? ESDI uses the same two
>> connectors as MFM (20/36 IIRC) , and transfers the data serially. The
>> difference between MFM and ESDI is that MFM transfers the raw analogue
>> data over t
On 2021-02-11 12:41 p.m., Al Kossow via cctalk wrote:
> On 2/11/21 9:33 AM, Nigel Johnson via cctalk wrote:
>> I'm about to try the very same thing.
>>
>> I have a MicroVAX II with a sigma MSCP ESDI controller. It can be set
>> for soft-secoring or various numbers of
Doesn't ATA transfer the data in parallel? ESDI uses the same two
connectors as MFM (20/36 IIRC) , and transfers the data serially. The
difference between MFM and ESDI is that MFM transfers the raw analogue
data over the cable but ESDI transfers digital serial data.
Nigel Johnson, MSc., MIEEE,
I'm about to try the very same thing.
I have a MicroVAX II with a sigma MSCP ESDI controller. It can be set
for soft-secoring or various numbers of hard sectors. That is what I
see is the big issue with these drives.
A friend gave me two drives that had been written on a PC under *nix.
I do
The 'PC' just means plastic, commercial heat rating
Nigel Johnson, MSc., MIEEE, MCSE VE3ID/G4AJQ/VA3MCU
Amateur Radio, the origin of the open-source concept!
Skype: TILBURY2591 nw.john...@ieee.org
On 2021-02-10 2:43 p.m., David Schmidt via cctech wrote:
> On 2/10/21 1:00 PM, John Many Jars
cctalk wrote:
> On Sat, Feb 6, 2021 at 4:33 PM Nigel Johnson via cctalk
> wrote:
>> I have some 4608X-104-221/331L currently in my digikey shopping basket -
>> I will place order on Monday after I confirm that the two outside pins
>> go to Vcc and Fss and the six others go t
On 2021-02-06 8:51 p.m., Glen Slick via cctalk wrote:
> On Sat, Feb 6, 2021 at 4:33 PM Nigel Johnson via cctalk
> wrote:
>> I have some 4608X-104-221/331L currently in my digikey shopping basket -
>> I will place order on Monday after I confirm that the two outside pins
&g
VE3ID/G4AJQ/VA3MCU
Amateur Radio, the origin of the open-source concept!
Skype: TILBURY2591 nw.john...@ieee.org
On 2021-02-06 7:23 p.m., Glen Slick via cctalk wrote:
> On Sat, Feb 6, 2021 at 3:59 PM Nigel Johnson via cctalk
> wrote:
>> I stand corrected, my 8200 has 3x 8-pin
PM Nigel Johnson via cctalk
> wrote:
>> Hi all, I wonder if anybody has one with the terminators installed that
>> can read off the p/n for these SIPs
>>
>> The manual says they are 8-pin 7 resistor 220/330 ones, but that is not
>> possible! To put 7 resistor p
I agree. None on Digikey. The manual says 7-resistor 8 pin, which is
impossible if one resistor on each pin goes to 5V and the other to Vss,
but the sockets are actually 9-pin!
If Chuck can give me a definite part number I will be on the way. The
controller says it specifically supports an EXB
Hi all, I wonder if anybody has one with the terminators installed that
can read off the p/n for these SIPs
The manual says they are 8-pin 7 resistor 220/330 ones, but that is not
possible! To put 7 resistor pairs to 220 and 330 you need a 9-pin,
unless you have one resistor SIP for 220 and
It's actually 568.26. Easy to work out, in Canada the gallon is defined
as being 454609 ten millionths of a cubic metre,
Nigel
Nigel Johnson, MSc., MIEEE, MCSE VE3ID/G4AJQ/VA3MCU
Amateur Radio, the origin of the open-source concept!
Skype: TILBURY2591 nw.john...@ieee.org
On 2021-02-01
Thanks Noel,
Yes, I tried to repair an 11/34 once after somebody plugged a peripheral
board into a memory slot - I was doing well after 3 or 4 chip chnages,
it started to come to life, until I found the 20V went right into an
d=address line of an in-house numbered ROM!
Having been warned by
On 2021-01-31 12:28 a.m., Glen Slick via cctalk wrote:
> On Sat, Jan 30, 2021 at 6:16 PM Nigel Johnson via cctalk
> wrote:
>> I can't go very far with the EXB8200 because I don't have a cartridge
>> for it. I am now trying the Compaq DLT4000.
>>
> You can still get
:
> On Sat, Jan 30, 2021 at 5:41 PM Nigel Johnson via cctalk
> wrote:
>> btw, I found an Exabyte 8200 in a pile of stuff I bought at VCF East
>> last year (but one :-) ) Does anybody on the list have experience
>> getting this to work on a Dilog SQ703 under NetBSD?
> I'm not
:52 p.m., Glen Slick via cctalk wrote:
> On Sat, Jan 30, 2021 at 5:41 PM Nigel Johnson via cctalk
> wrote:
>> btw, I found an Exabyte 8200 in a pile of stuff I bought at VCF East
>> last year (but one :-) ) Does anybody on the list have experience
>> getting this to wor
concept!
Skype: TILBURY2591 nw.john...@ieee.org
On 2021-01-30 7:19 p.m., Glen Slick via cctalk wrote:
> On Sat, Jan 30, 2021 at 3:58 PM Nigel Johnson via cctalk
> wrote:
>> OK, thanks, Glen, i didn't think of that! Not sure why they would do
>> that with all memeory on-b
Amateur Radio, the origin of the open-source concept!
Skype: TILBURY2591 nw.john...@ieee.org
On 2021-01-30 6:08 p.m., Glen Slick via cctalk wrote:
> On Sat, Jan 30, 2021 at 2:20 PM Nigel Johnson via cctalk
> wrote:
>> Yes the BA11S would be too big. Can't see why not for the 11/03 chassi
n
> 11/93 explode if put in a traditional 18 bit 11/03 chassis? The one
> with the memory refresh lines and power for core memory.
>
> Probably.
>
> CZ
>
> On 1/30/2021 12:30 PM, Nigel Johnson via cctalk wrote:
>> I'm trying to repair an LSI-11/93 that has a bus timeou
I'm trying to repair an LSI-11/93 that has a bus timeout problem.
Unfortunately the BA23 box it normally sits in lives in a cupboard with
printers stowed on top of it and due to my domestic situation (small
condo) I can't get it out to scope or get a scope anywhere near it to
scope the bus.
I'm
I'd like to get a Dilog SQ703 I have to work on my microvax, does
anybody know where I can get a copy of the manual?
cheers,
Nigel
--
Nigel Johnson, MSc., MIEEE, MCSE VE3ID/G4AJQ/VA3MCU
Amateur Radio, the origin of the open-source concept!
Skype: TILBURY2591 nw.john...@ieee.org
For one exciting moment there I thought that you were talking about the
Semi-Automatic Ground Environment - which a friend of mine was a tech on
in North Bay, ON, part of the DEW line!
I was getting ready to up stakes and hop off to Philadelphia!
cheers,
Nigel
Nigel Johnson, MSc., MIEEE,
ce then they haven't
>>> done much of a thing to support either computing or technology.
>>> Innovation there pretty much died...
>>>
>>> The fact that they would use a non-standard, monopoly, proprietary,
>>> privacy stealing email solution is just not a
well, things happen. We did have an amazing run there for 6 years
> but all good things....
>
> CZ
>
> On 12/29/2020 10:07 AM, Nigel Johnson via cctalk wrote:
>> The IEEE also uses google!
>>
>> One of my NetBSD correspondents simply blocks all mail from google
>> ser
The IEEE also uses google!
One of my NetBSD correspondents simply blocks all mail from google
servers on his system!
cheers,
Nigel
Nigel Johnson, MSc., MIEEE, MCSE VE3ID/G4AJQ/VA3MCU
Amateur Radio, the origin of the open-source concept!
Skype: TILBURY2591 nw.john...@ieee.org
On 2020-12-29
Nothing can beat HCF!
Nigel Johnson, MSc., MIEEE, MCSE VE3ID/G4AJQ/VA3MCU
Amateur Radio, the origin of the open-source concept!
Skype: TILBURY2591 nw.john...@ieee.org
On 2020-12-14 2:39 p.m., Wayne S via cctalk wrote:
> Byte magazine in the late 70’s had a list of funny mnemonics like this.
>
I'm pretty sure the DEC VT100 didn't have it. It was very memory
-limited - the standard was 80x 24 and if you wanted 132 x 24 you had to
buy the advanced video option.
There was a demo program that made it look like it recovered data that
had been scrolled off the top of the screen, but I think
Try this:
http://h30266.www3.hpe.com/odl/vax/opsys/vmsos73/vmsos73/6017/6017pro_009.html#emerg_startup_uaf
Nigel Johnson, MSc., MIEEE, VE3ID/G4AJQ/VA3MCU
Amateur Radio, the origin of the open-source concept!
Skype: TILBURY2591 nw.john...@ieee.org
On 2020-11-11 9:11 a.m., devin davison via
I just spoke to Jerome on the phone a few days ago. He just doesn't
answer emails!
I will be going to his house sometime in the near future, is there a
message?
cheers,
Nigel
Nigel Johnson, MSc., MIEEE, VE3ID/G4AJQ/VA3MCU
Amateur Radio, the origin of the open-source concept!
Skype: TILBURY2591
gel Johnson via cctalk
> wrote:
>> So I would like to convert a brand-new DQ703 I have to SQ706 so I can
>> mount SCSI disks.
>>
>> I understand it is just a prom change.
>>
>> Does anybody have any info, or perhaps a PROM image?
>>
> The two Dilog SQ
ite quick all things
> considered, and some of the ESDI controllers had pretty good hardware
> acceleration features in addition to block and burst mode DMA.
>
> C
>
> (running 327mb ESDI disks on my 11 and am very happy with performance)
>
> On 8/16/2020 11:24 AM, Nigel
I'm getting back to trying to restore my MicroVax II. Existing
controllers are ESDI and MFM, disks hard to find.
So I would like to convert a brand-new DQ703 I have to SQ706 so I can
mount SCSI disks.
I understand it is just a prom change.
Does anybody have any info, or perhaps a PROM image?
The error signal was wire-or'ed through up to four drives, so it must be
terminated somewhere - IIRC there was a Unibus terminator in the last
drive, but it has been 45 years since I worked on them, the little grey
cells are fading _\:-)
cheers, Nigel
Nigel Johnson, MSc., MIEEE,
I just copied the email to a friend who was at CDC ad he says they were
from the CDC3100.
cheers,
Nigel
Nigel Johnson, MSc., MIEEE, VE3ID/G4AJQ/VA3MCU
Amateur Radio, the origin of the open-source concept!
Skype: TILBURY2591 nw.john...@ieee.org
On 07/07/2020 13:29, Paul Koning via cctalk
No, I spoke to him in April/May and had a date booked to go and pick up
stuff from his home, but then the warning about social distancing came
about and he told me to postpone.
At the time he was moving from his house and wanted everything gone, but
I don't know if he has done that yet as he has
I remember the day! I was in school then, and had an older friend who
worked at IBM. He had previously told me that they had bought the
entire (416)360 exchange for their offices, and I asked him if they were
all going to change to 370 now!
cheers,
Nigel
Nigel Johnson, MSc., MIEEE,
Sometimes I had only lunch hour to do PMs, and one office worker always
ate into my time because she had to 'finish something'.
Pretty soon I found that [ 2 ; 9 y would put all ANSI terminals
into continuous self-test, and that solved the problem:-)
Those were the days!
cheers,
Nigel
On
An electronic parrot in the vacuum tube days? -- must have been very large!
On 22/06/2020 07:56, William Donzelli via cctalk wrote:
Thanks! What is the secret decoder ring that tells you 188 means GE?
EIA manufacturer codes. These were often applied to private and house
branded labelled
I remember that shortage of memory chips. People in my office were all
blaming it the Ayatollah Khomeni!
On 16/06/2020 20:13, Chuck Guzis via cctalk wrote:
On 6/16/20 2:29 PM, Ethan Dicks wrote:
It's a stack of 16 memory cards covered in 4116 DRAMs and a couple of
control/management boards
I get the same, no matter how carefully I cut and paste either link.
Sure looks like a standard NO-ENTRY road sign to me!
Nigel ve3id
On 16/06/2020 12:00, Richard Pope via cctalk wrote:
Chuck,
I get the same thing!
GOD Bless and Thanks,
rich!
On 6/16/2020 10:56 AM, Chuck Guzis via
One trick I found with the -5V if it is driven by a charge pump: check
the voltage. If it is being pulled down since the charge pump cannot
supply the current, just disconnect the charge pump and put a lab supply
in its place. The increased current will clean out whatever is shorting
it to
Actually, yes. I had the first two years of them bound - the first
issue sold to me personally by Wayne Green, and let them go for a song
. A couple of years later each bound edition was advertised for $200 -
that was in 1995 prices!
No idea wha tthey woul dbe worth now.
cheers,
NIgel
I know where you are coming from. Starting out as an FE I was only
initially trained in assembler - specifically to trace each instruction
through the machine for troubleshooting! My first database was written
in ART418 (Assembler for Real Time/ Univac 418 :-))Later I learned C and
used it to
If all you need it that little mounting collet, I have a dozen or so of
them somewhere for the price of postage from Canada!
cheers,
Nigel
On 13/05/2020 02:23, Rob Jarratt via cctalk wrote:
That's fantastic Maciej! I often buy from Farnell, so there is no issue with
getting those parts
You might find someone on an Olivetti forum who is interested :-)
On 11/05/2020 08:35, Bill Gunshannon via cctalk wrote:
I have never seen one mentioned but is there anyone here
with an interest in these? I found a still sealed copy of
the Software Development Set Ver. 2.0. What's it
to
liquidate - selling VT100-compatible terminals for peanuts - I got a
VC100 and VC3100 (with TEK 4010 emulation) for a few hundred dollars each!
cheers,
NIgel
On 24/04/2020 22:25, Chuck Guzis via cctalk wrote:
On 4/24/20 6:58 PM, Nigel Johnson via cctalk wrote:
Does anybody have a wp made by AES
Does anybody have a wp made by AES?
In the late 70's, they were experimenting with voice recognition for
their systems. We were a nearby DEC Components OEM and had a hundred or
so LSI11/23 modules in stock. They sent an engineer over to our plant,
took out the whole stock, and replaced the
Thanks for the link. I am sure I am going to come down and see your
site when this crisis is over!
I was an FE on three Univac 418 IIs at Bell Canada in Toronto between
1971 and 1975.
Don't suppose you have any 418s there?
cheers,
Nigel
On 22/04/2020 08:52, Bill Degnan via cctalk wrote:
, barry bortnick via cctalk wrote:
It's located at the Calgary based National Music Centre/Studio Bell in
Calgary, Alberta, Canada.
I have to correct the original posting, it's a McLeyvier, not a Synclavier.
-Original Message-
From: cctalk On Behalf Of Nigel Johnson via
cctalk
Sent: April 20
Where is this to be displayed? I can't help you with the VT100 but I
was very involved in the PDP11/40 machine that David McLey built his
software on!
In fact, I worked until 1 in the morning the night before he had a
meeting with the financiers from New York to finance project, when it
The actual sockets were always labelled with Digital's trademarks, but
they sold them to OEMs to do what they like with them. We OEM'd for the
Components Group, at one time placed a million dollar order of stuff
including boxes of those backplane sockets!
cheers,
Nigel
On 17/04/2020
How about a CA Naked Mini, I may have a picture somewhere!
On 09/04/2020 13:42, Fred Cisin via cctalk wrote:
MOST of the other PDP machines use the XX2247 key, which is a
tubular one.
But, THIS thread is about the weird one that is NOT tubular.
Here is my locksmith-cut 11/05 key attached to
There were a lot of differing opinions, some of which held out over
time. Even Fred Brooks had to admit that David Parnas was right about
data encapsulation
On 05/04/2020 15:53, geneb via cctalk wrote:
On Sun, 5 Apr 2020, Fred Cisin via cctalk wrote:
Edsger Dijksta said, "The use of COBOL
Since we are all at home exchanging stories, I thought I would regale
you with my best punch card one:
My first job out of school was at Bell Canada in Downtown Toronto.
I was trained as an FE on their Univac 418 II systems that ran a
Canada-wide store-and-forward MSDS - Message Switching
Since we are all at home exchanging stories, I thought I would regale
you with my best punch card one:
My first job out of school was at Bell Canada in Downtown Toronto.
I was trained as an FE on their Univac 418 II systems that ran a
Canada-wide store-and-forward MSDS - Message Switching
Vectoring through 24 was very important back in the core memory days
when the memory would still be there after a power failure and you
wnated the system to keep running, as was our Ontario Bellboy paging
controller.
cheers,
Nigel
On 30/03/2020 12:49, Paul Koning via cctalk wrote:
On
Brings back memories! My first 6800 cross assembler came to me as 2000
Fortran source code punch cards. We had an F4R4 compiler on the PDP11
but the card reader was on the PDP-8.
The only common peripheral was paper tape. One night, the Chief
Engineer and I fed the cards into the PDP8 card
Blimey, next you will be giving away the secret handshake!
On 21/03/2020 20:39, Antonio Carlini via cctalk wrote:
On 21/03/2020 21:43, Ethan Dicks via cctalk wrote:
The SYSTEM password is MANAGER.
Just like the old days.
Times were different then :-)
Wasn't the FIELD account password
More in the trivia department, the DA15 was used for AUI interconnection
in the 10base-5, -2, and early -T days, as well as analog joysticks.
I'm surprised to see wikipedia saying that the high-density ones had DA
to DE designations, I have only seen them in catalogs with full part
numbers.
If your reference to D-sub means the connectors originally made by
ITT-Cannon, I can offer the following from a cutout from a trade catalog
that I have carried around these last 30 years as ammunition against
those who erroneously use the term DB-9!
I wasn't sure, so I had to find it and can
You can also use RG174 to go between cracks in floor tiles as I did once
in my apartment. It was easier than cutting hole sin concrete to get
where I wanted to go (well before wi-fi)
As a consultant said when he saw it, "I have heard of thin-net but that
is ridiculous!
cheers,
NIgel
On
I have been down that road myself. In the end I gave up, bought a
Toshiba DVR630:
https://www.amazon.ca/Toshiba-DVR630-HDMI-Recorder-Black/dp/B00GH7PP0U
Yikes! I paid $179.95 for mine a few years back!
It is a lot easier to sit back and let it do the work! (As long as you
don't have to
Sorry guys, that LTspice stuff was not for this group - my mailer must
have screwed up!
73 de Nigel ve3id
On 26/01/2020 18:12, Bob Smith via cctalk wrote:
I ma rusty on this, been almost 50 years since I worked on the DP8EP
aka the KG83. then the KG11, and the Autodin 2 CRC32 designs in
True, but in my case it was a typo! But yes we digital types like
saturation. Still have the funny thing with LTSpice though. I used it a
lot for electricity 1 and 2 demos for students when the college wouldn't
support me running electronics workbench under a VM on linux!
Works just fine
Have you searched for them on the NXP web site?
I found the RF ones here:
https://www.nxp.com/products/rf/rf-power-application-notes/rf-power-application-notes-by-frequency-range/general-frequency-range-application-notes:RF_FREQ_GEN_FREQ_RANGE_APP_NOTES
73 de Nigel ve3id
On 07/01/2020 18:14,
I thought that mysen, then I saw the title. I believe what is offered
is a coach ride to get the sandwich at an event of the Royal
Horticultural Society
Perhaps a little more upscale than the average MacDonalds?
On 31/12/2019 12:09, John H. Reinhardt via cctalk wrote:
On 12/31/2019 10:15
Love those old sounds on an AM radio. One day, I was working on a ham
project in the CFRB radio engineering workshop in Toronto. It was just
after Kilobaud magazine had published a program that would play Valda's
theme (Somewhere My LOve) on an AM radio next to a Motorola MEK6800D2.
We had
Oh the things companies did to try and increase their profits! Bad idea
indeed, reversible just meant half the profit for the suppliers!
On the same vein, we ordered a TWX line form Bell but supplied our own
machine. Bell said they were not responsible if the line caused errors,
and sent a
This is starting to sound like a usenet discussion years ago about the
correct plural of 'VAX' :-)
Vaxen, Vaces, or just multiple VAX installations anybody?
cheers,
Nigel
On 25/11/2019 21:19, steve shumaker via cctalk wrote:
On 11/25/19 2:14 PM, Richard Pope via cctalk wrote:
Will,
Do you mean they have finally perfected the WOM???
On 11/25/2019 6:21 PM, ben via cctalk wrote:
Remember we now are moving in the cloud era, a write only device.
--
Nigel Johnson
MSc., MIEEE
VE3ID/G4AJQ/VA3MCU
Amateur Radio, the origin of the open-source concept!
You can reach me by
No, your home has an intranet!
cheers,
Nigel
On 25/11/2019 13:45, Richard Pope via cctalk wrote:
Noel,
Isn't the proper term for my network of computers here at home:
internet and the term : Internet the proper term for the worldwide
collection of networked computers?
GOD Bless and
I was the Canadian GM of Emulex, whose Persyst Division made a bi-sync
card for the PC. I was stunned when, in the era of TCP/IP
interconnectivity, a client kept on talking about a 'sign-on' card :-) I
just smile dand accepted his order for lots of product!
On 18/11/2019 20:22, Ethan Dicks
I think you will win a lot of friends if you can make something that
will emulate MSCP devices on the QBus - I have a micro11 and microVax
sans disk due to only having ESDI ate ST506 controllers!
cheers es 73 to the hams amongst us de Nigel ve3id
On 15/11/2019 15:23, David Bridgham via
No. While each end might be able to communicate with the local modem in
command mode using different parameters, when they are in connected mode
the modems will not convert anything, just pass the exact format along.
So if one end is expecting 7E2 and the other is sending 8N1 there will
be a
On 13/11/2019 13:36, Chuck Guzis via cctalk wrote:
There are other "oddball" combinations, such as 8E1 and 8O1, which sends
a 9-bit data frame. You can see datasheets on some UARTs as well as MCU
UARTs that support the 9 bit packet.
According to the diagram of the Smartmodem there is no UART,
Brain via cctalk wrote:
On 11/13/2019 5:31 AM, Nigel Johnson via cctalk wrote:
I actually have an original Hayes 300 modem. Would it be any use if I
could set it up for a a test, or would it need another genuine Hayes
one to talk to for what you need?
I looked at the SmartModem 300. It looks
I actually have an original Hayes 300 modem. Would it be any use if I
could set it up for a a test, or would it need another genuine Hayes one
to talk to for what you need?
cheers,
Nigel
On 13/11/2019 02:25, Jim Brain via cctalk wrote:
I am the author of tcpser, a UNIX/Windows program that
I'm starting to get heavily invested in rebuilding my microvax 2, it
would be a shame if the cpu failed, so I'd like to put my name down for
the KA630 pcu card if nobody local wants it.
cheers,
Nigel
On 08/11/2019 15:12, David Coolbear via cctech wrote:
Most of the items are spoken for but
Your story is an inspiration to us all! With all the modern medical
technology and the human spirit, there is never a reason to give up hope!
Best wishes for a full recovery,
Nigel Johnson
On 08/11/2019 17:27, Bill Degnan via cctalk wrote:
Dave wow what a story. I am glad you are
Are you sure you won't ship the Maxtor ESDI drves? I have a microvax 2
here just crying out for them. Unfortunately CA is a five day drive away
for me!
Nigel ve3id
On 06/11/2019 13:16, David Coolbear via cctech wrote:
I have the following 5-1/4" Drives that I would like to get rid of.
Are you sure you won't ship the Maxtor ESDI drves? I have a microvax 2
here just crying out for them. Unfortunately CA is a five day drive away
for me!
Nigel ve3id
On 06/11/2019 13:16, David Coolbear via cctech wrote:
I have the following 5-1/4" Drives that I would like to get rid of.
In all my years of electronics troubleshooting, I have never spent hours
under a microscope :-) OK, it was easier using the RTL of the Univac
418, but even today the parts are big enough to see!
On 26/10/2019 17:42, Fred Cisin via cctalk wrote:
Hidden behind a NYTimes paywall, . . .
news
Are we talking about ISA-bus computers here? If so the colour graphics
card was a Persyst Bob card, and the bi-sync adapter, if equipped, was
also made by Persyst. I know because I signed them to the contract to
buy those two items. I know about their high standards of Quality
Control
On Oct 20, 2019, at 12:10, Brent Hilpert via cctalk
mailto:cctalk@classiccmp.org>> wrote:
On 2019-Oct-20, at 9:14 AM, Nigel Johnson via cctalk wrote:
On 20/10/2019 06:43, Peter Corlett via cctalk wrote:
On Sat, Oct 19, 2019 at 02:23:46PM -0400, Nigel Johnson via cctalk wrote:
Jud
/2019 15:09, Brent Hilpert via cctalk wrote:
On 2019-Oct-20, at 9:14 AM, Nigel Johnson via cctalk wrote:
On 20/10/2019 06:43, Peter Corlett via cctalk wrote:
On Sat, Oct 19, 2019 at 02:23:46PM -0400, Nigel Johnson via cctalk
wrote:
Judging by the year, it was probably a teletext terminal
, Oct 19, 2019 at 02:23:46PM -0400, Nigel Johnson via cctalk wrote:
Judging by the year, it was probably a teletext terminal. [...]
It's not Teletext, unless that word means something different on the other side
of the Pond. Teletext was basically a text system (the hint's in the name
I remember an IBM engineer talking about this at our ham radio club. The
wire was coiled inside a drum and pulses were sent down the wire. The
'read head' was a magnetic pickup at the other end of the coil - and
access time was however long it took the pulse to arrive at the other
end.
Are you sure it wasn't the massive over-funding by government that
killed it?
On 19/10/2019 14:35, ben via cctalk wrote:
On 10/19/2019 12:23 PM, Nigel Johnson via cctalk wrote:
Judging by the year, it was probably a teletext terminal. There were
various field trials of such systems around
Judging by the year, it was probably a teletext terminal. There were
various field trials of such systems around that era. We had one in
Toronto's Eaton Centre - it was based on NAPLPS, and used a PDP11/23.
There was a lot of Canadian Government money put into research to
promote he Canadian
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