Beautiful tape unit. Threading the tape over the myriad of pulleys must be a
joy!
Marc
On Oct 2, 2017, at 10:20 PM, Evan Koblentz via cctalk
wrote:
Here's a phone video from a recent repair workshop at the VCFed museum in New
Jersey. Bill Dromgoole is demonstrating progress on one of the ta
Registered!
Marc
On Oct 3, 2017, at 1:30 PM, Al Kossow via cctalk wrote:
fyi, just noticed this is up now
http://www.computerhistory.org/events/upcoming/#yesterdays-computer-tomorrow-xerox-alto
Jack,
You can drive an HP-IB equipped HP7970E with an old PC that has an HP-IB card
using Ansgar Kueckes HPDIR. I debugged it together with Ansgar. The rub is that
it only worked well with an ISA HP-IB card running under Win98. The PCI HP-IB
card running under XP uses a driver that causes
That would be awesome, as long as you aren't putting yourself out. Any
information I can give this guy helps. He is a real wizard and has fixed
machines in my collection that haven't worked in eons. But he usually needs
some kind of referene on what he should be seeing to figure out wha
I have for sale a TRS-80 Model III with 4 half-height 5.25" drives. Full
details are here:
http://www.vcfed.org/forum/showthread.php?59937-TRS-80-Model-III-w-4-half-height-5-25-quot-floppy-drives-needs-work
Thanks!
Sellam
I have a HP OmniBook models 300 & 425 for sale with extra accessories as a
package or separate. Full details are here:
http://www.vcfed.org/forum/showthread.php?59962-HP-OmniBook-300-amp-425-w-3-5-quot-external-drive-and-more
Thanks!
Sellam
I have for sale a HP 9862A OPT 20/30 Calculator-Plotter I/O module.
Details are here:
http://www.vcfed.org/forum/showthread.php?59958-HP-9862A-20-30-Calculator-Plotter-I-O-and-11202A-TTL-I-O-Interface
Thanks!
Sellam
Am I correct that the only difference between the LK401 keyboard and the LK402
is the keycaps? If so, does anyone know if LK450 (actually apparently an LK451
despite the sticker on the back) keycaps can be transplanted to an LK401?
Zane
YES! hp 30 series 3000 systems and 40 series had hpib 1600 bpi
7970e in early days. later they had other drives that would go 6250...
and I wish I had one to load the old bulleting board email chat
software up on the hp 3000 37 I have here.
later dried wer
I will be glad to open mine up, and 'PhotoFact' it for you.
I can take scope shots of the critical signals, voltage rails. I suppose the
first, would be if you hit the HOME PAGE key it should clear the screen, I can
follow that signal path, and take some scope shots...
Even with the screen f
On 10/03/2017 06:58 PM, Jay West via cctalk wrote:
> HP manuals of the period are awfully detailed. They all have the theory of
> operation section with a circuit walkthrough, etc. It could be helpful for
> you to also take a look at the manual for the 13181 or 13183 controller set,
> as you'll ki
I’ll have to check that when I get it back – I didn’t really have a look inside
and wouldn’t have known to look for that. I’m hoping not.. cosmetically the
machine is excellent – the interior could almost fool you into thinking you
were looking into a brand new Mac, with all that stainless. Bu
On 10/3/2017 9:25 AM, Ian Finder via cctalk wrote:
On Tue, Oct 3, 2017 at 9:12 AM, Randy Dawson via cctalk <
cctalk@classiccmp.org> wrote:
I think he has a few of these left. The big problem is the RAMPACK
plastic cases are recycled from old ROMPACKs and these are in short supply.
He is look
Jack wrote...
I begin to understand - so, for example an HP2100 with the 7970 tape option
had a specific tape controller board that talked direct to the 7970.
Yep, and no small amount of logic. The 7970A or B interfaced to a 2100/21MX
host using a 13181 interface (which is a two
Hello Jay et. al...
I appreciate the feedback.
I begin to understand - so, for example an HP2100 with the 7970 tape
option had a specific tape controller board that talked direct to the 7970.
That certainly makes sense.
I never used an HP2100 with a "real" tape drive such as the 7970 -
act
On 10/3/17 5:33 PM, Al Kossow via cctalk wrote:
> I have two of the CDC drives, pn 94208-51 date codes 8749 and 8750
I just popped off one of the logic boards, and it is a slightly longer than
usual board with a WD1015-JM, WD11C00-JU. WD10C20B-JH-05, AND WD2010BJM05-02
On 10/3/17 5:39 PM, Alan Perry via cctalk wrote:
> Does CHM have the e-mail on IDE history with Bill Frank, Tony Maggio and
> Ralph Perry listed in the references?
[21] Tony Maggio and Ralph Perry email on CDC Wren II IDE Drive, December 15,
2009
Tom probably has it, I don't recall seeing i
On 10/3/17 5:33 PM, Al Kossow via cctalk wrote:
On 10/3/17 5:03 PM, Alan Perry via cctalk wrote:
Compaq and WD also worked with CDC to use the Wren II HH drive in the Compaq
Deskpro 286. I found separate reports
confirming the Miniscribe HDD in the Portable II and the Wren II in a Compaq
D
On 10/3/17 5:03 PM, Alan Perry via cctalk wrote:
> Compaq and WD also worked with CDC to use the Wren II HH drive in the Compaq
> Deskpro 286. I found separate reports
> confirming the Miniscribe HDD in the Portable II and the Wren II in a Compaq
> Deskpro 386 in 1986.
I have two of the CDC d
Jack wrote
> Question: I understand that most (all?) of the '7970 drives interfaced
> through the HP-IB IEEE-488 bus.
To which AEK replied
--
wrong.
full stop.
--
Welcome to our nook of the net. The grizzled veterans are here, and there's
quite a few HP 2100/21MX folks lurking
On 10/3/17 4:25 PM, Fred Cisin via cctalk wrote:
Q: was the card slot in the Poqet "PCMCIA"? ("People Can't Memorize
Computer Industry Acronyms" ("Personal Computer Memory Card Industry
Association", for those who want more formality))
Maybe later ones were, but the first ones were just "card
On 10/3/17 3:57 PM, Fred Cisin via cctalk wrote:
The earliest use I can find of the "AT Attachment" terminology is the
X3T9 project proposal from late 1990 which eventually led to the
formation of the X3T10 group:
http://www.t10.org/ftp/x3t9.2/document.90/90-058r2.txt
On Tue, 3 Oct 2017, Ala
On 10/3/17 4:50 PM, Jack Harper via cctalk wrote:
> Question: I understand that most (all?) of the '7970 drives interfaced
> through the HP-IB IEEE-488 bus.
wrong.
full stop.
Hello List -
I just joined the list a few days ago. I am delighted to have found you.
I have a couple of questions about the gorgeous HP 7970 Tape Drive -
e.g., http://hpmuseum.net/images/7970A-43.jpg
Question: I understand that most (all?) of the '7970 drives
interfaced through the HP-I
On Tue, Oct 3, 2017 at 5:25 PM, Fred Cisin via cctalk wrote:
> Q: was the card slot in the Poqet "PCMCIA"? ("People Can't Memorize
>>> Computer Industry Acronyms" ("Personal Computer Memory Card Industry
>>> Association", for those who want more formality))
>>> Maybe later ones were, but the fir
Q: was the card slot in the Poqet "PCMCIA"? ("People Can't Memorize
Computer Industry Acronyms" ("Personal Computer Memory Card Industry
Association", for those who want more formality))
Maybe later ones were, but the first ones were just "card slot" "that
happened to match PCMCIA when that came
On Tue, Oct 3, 2017 at 4:57 PM, Fred Cisin via cctalk wrote:
>
> Q: was the card slot in the Poqet "PCMCIA"? ("People Can't Memorize
> Computer Industry Acronyms" ("Personal Computer Memory Card Industry
> Association", for those who want more formality))
> Maybe later ones were, but the first on
The earliest use I can find of the "AT Attachment" terminology is the
X3T9 project proposal from late 1990 which eventually led to the
formation of the X3T10 group:
http://www.t10.org/ftp/x3t9.2/document.90/90-058r2.txt
On Tue, 3 Oct 2017, Alan Perry via cctalk wrote:
As I previously posted, th
Hi Andrew,
thanks for your email and great to hear, that you
managed to get hands on a BBK-S4!
On Sun, 1 Oct 2017, Andrew Back wrote:
Have you got PARIX up and running with the Power Xplorer?
Yes, 1.3.something. I even ported the povray to this hardware
using an older pvmpov version. Most
On 10/3/17 12:10 PM, Chuck Guzis via cctalk wrote:
On 10/03/2017 05:37 AM, wrco...@wrcooke.net wrote:
fwiw in the late 80s I was the service department at a small PC
store. I remember seeing these newfangled drives in Compaq
computers, but I don't remember exactly when. Perhaps 88? Wikipedi
If the CRT floods one can say the CRT is good with one major thing left,
phosphor burns. In a DVST (Direct View Storage Tube) the most common effect
is the burn area will not store with the same potential as the rest of the
tube, or if burned enough will not store at all. There are other things
tha
fyi, just noticed this is up now
http://www.computerhistory.org/events/upcoming/#yesterdays-computer-tomorrow-xerox-alto
Tom Gardner via cctalk writes:
> But again if anyone has any documents dating IDE in the 1980s I’d love
> to see them
Don't forget the Internet Archive's impressive collection of scanned
magazines for questions like this! There are several references in 1989
in Infoworld and similar periodicals.
On 10/3/17 12:09 PM, Fred Cisin via cctalk wrote:
Scott Mueller mentions it in his "Upgrading And Repairing PCs"
http://www.informit.com/articles/article.aspx?p=2028834
He said that "IDE" was a "marketing term", with "ATA" being the
"official" name. Which is pretty much the same as the discu
On 10/03/2017 12:09 PM, Fred Cisin via cctalk wrote:
> Also, of course, "pre-ATA IDE" can mean IDE prior to the ATA
> standard release, rather than prior to the early use of "ATA" as a
> name.
Indeed, you can still find "XTA IDE" and "ATA IDE" mentioned in
literature. That is, the generic term
On 10/3/17 11:40 AM, Phil Blundell via cctalk wrote:
On Tue, 2017-10-03 at 18:56 +0100, Pete Turnbull via cctalk wrote:
So there's clear proof that at least three companies in the UK were
using the term IDE before (or at least by) 1990. I never heard it
called anything else in that timeframe.
Scott Mueller mentions it in his "Upgrading And Repairing PCs"
http://www.informit.com/articles/article.aspx?p=2028834
He said that "IDE" was a "marketing term", with "ATA" being the "official"
name. Which is pretty much the same as the discussion here, with both
terms being used concurrently,
On 10/03/2017 11:40 AM, Phil Blundell via cctalk wrote:
> On Tue, 2017-10-03 at 18:56 +0100, Pete Turnbull via cctalk wrote:
>> So there's clear proof that at least three companies in the UK were
>> using the term IDE before (or at least by) 1990. I never heard it
>> called anything else in tha
On Tue, 3 Oct 2017, Randy Dawson via cctalk wrote:
I think he has a few of these left. The big problem is the RAMPACK
plastic cases are recycled from old ROMPACKs and these are in short
supply.
I googled "tektronix rampack" to see what they looked like. That would be
absurdly easy to 3D pr
On Tue, 2017-10-03 at 18:56 +0100, Pete Turnbull via cctalk wrote:
> So there's clear proof that at least three companies in the UK were
> using the term IDE before (or at least by) 1990. I never heard it
> called anything else in that timeframe.
That pretty much matches my recollection also.
On 03/10/2017 01:04, Tom Gardner via cctalk wrote:
Unfortunately there is no documentation to support Pete's recollection - if
there is any I would like to see it.
Well, actually, there is, though not for quite as early as I had those
conversations. The company I was referring to was HCCS As
Also the computer itself *was* semi-working.. with the monitor board
disconnected, voltages were good and I could blindly type in a simple endless
loop program and get the ‘BUSY’ light to light up when I ran it.
I don’t have the computer just yet and my tech guy didn’t have time to try
enter
Yes before the screen would stay dark until you powered off, then there would
be a brief flood. Now it floods and stays on but no text.
From: Ian Finder [mailto:ian.fin...@gmail.com]
Sent: Tuesday, October 3, 2017 9:39 AM
To: Brad H ; General Discussion: On-Topic
and Off-Topic Posts
Subjec
Does it warm up or flood?
"When I got my 4051, on power up there
would be no voltage to the motherboard and nothing came up on the screen.
That has been fixed, however we still do not have any kind of prompt or
anything appearing."
Care to share with the class what you've done so far?
On Tue, Oc
Hi there,
My go-to guy for CRT stuff has informed me that he has the CRT on my 4051
working and that the tube is good. When I got my 4051, on power up there
would be no voltage to the motherboard and nothing came up on the screen.
That has been fixed, however we still do not have any kind of p
On Tue, Oct 3, 2017 at 9:12 AM, Randy Dawson via cctalk <
cctalk@classiccmp.org> wrote:
>
> I think he has a few of these left. The big problem is the RAMPACK
> plastic cases are recycled from old ROMPACKs and these are in short supply.
>
>
> He is looking for a 'Toaster' too. Can we get a count
One of the Ex-Tek's, Micheal Cranford has designed a modern FLASH based RAMPACK
for the tape drive, and filled it with most of the known BASIC games.
More significant, Micheal has written FASTGRAPHICS, a replacement for the BASIC
vector draw functions; 100x increase in performance, in addition
On 10/03/2017 05:37 AM, wrco...@wrcooke.net wrote:
> fwiw in the late 80s I was the service department at a small PC
> store. I remember seeing these newfangled drives in Compaq
> computers, but I don't remember exactly when. Perhaps 88? Wikipedia
> backs me up that it was Compaq (with WD drive
Hi Bob,
I have a 4051, in perfect working order. I would like to buy one of these
'Toasters' from you.
I could also take your schematic and make more copies of it for others.
What ROMPACKS do you have?
Randy
From: cctalk on behalf of Bob Rosenbloom via
On 10/3/17 8:29 AM, Mike Stein via cctalk wrote:
> Sounds like a similar system to what Burroughs used on their cassettes; I
> always thought that they'd be a lot easier to read than the 'normal' formats
> with embedded clock signals and always intended to try to read some of the
> tapes I ha
- Original Message -
From: "Al Kossow via cctalk"
To:
Sent: Tuesday, October 03, 2017 11:06 AM
Subject: Re: That Tek 405x QIC Tape.
>
>
> On 10/3/17 2:50 AM, Jos Dreesen via cctalk wrote:
>
>> Al is maintaining a set of ROM images for these machines, are tape images
>> covered som
On 03.10.2017 16:59, Al Kossow via cctalk wrote:
On 10/3/17 2:50 AM, Jos Dreesen via cctalk wrote:
That "famous" QIC tape unit
Tektronix 405x tapes aren't QIC
They are 3M DC series cartridges, but the encoding is not a QIC standard.
The problems, alas, are the same.
On 10/3/17 2:50 AM, Jos Dreesen via cctalk wrote:
> Al is maintaining a set of ROM images for these machines, are tape images
> covered somewhere ?
> Do we have an fixed tape image format, as has been done with Dave's IMD for
> floppies ?
As far as I know, no one has successfully made a copy
On 10/3/17 2:50 AM, Jos Dreesen via cctalk wrote:
> That "famous" QIC tape unit
Tektronix 405x tapes aren't QIC
They are 3M DC series cartridges, but the encoding is not a QIC standard.
Hi folks,
I realise this is a question that's only applicable to a small number of
people but I'm looking for anyone who may have info or better still PAL
dumps of a Rev3 C65. Back when I got the machine in 2001 there was a couple
of people active in this field, namely Riccardo Rubini and Moise Su
That "famous" QIC tape unit
...has been talked about a lot, still some things are still not clear to me.
Baking : is this a last-resort means of reading some valuable tape, or a means
to restore them for a further few years of usage ?
I intend to bake mine before usage, although a few unus
Yes, please... I am also reistered my interest...
Marco
Am 03.10.2017 um 09:17 schrieb Ed via cctalk:
please send into to us as well...
thanks ed#
In a message dated 10/3/2017 12:12:53 A.M. US Mountain Standard Time,
cctalk@classiccmp.org writes:
On 10/1/2017 4:17 PM, SYLVIA MCMAHO
Here's a phone video from a recent repair workshop at the VCFed museum
in New Jersey. Bill Dromgoole is demonstrating progress on one of the
tape drives for our Sperry-Rand Univac 1219B mainframe (circa mid-1960s).
https://www.instagram.com/p/BZxg7e7DJ3r/
Evan
please send into to us as well...
thanks ed#
In a message dated 10/3/2017 12:12:53 A.M. US Mountain Standard Time,
cctalk@classiccmp.org writes:
On 10/1/2017 4:17 PM, SYLVIA MCMAHON via cctalk wrote:
> Hello Philip,
> I registered interest in purchasing a Omnibus USB interface some tim
On 10/02/2017 10:47 PM, Tom Gardner via cctalk wrote:
> Nice find but still later than Mar 1989.
You must have missed my second post--January 31, 1989.
--Chuck
On 10/1/2017 4:17 PM, SYLVIA MCMAHON via cctalk wrote:
Hello Philip,
I registered interest in purchasing a Omnibus USB interface some time ago. Is
this project still alive?
Regards, Baz
Sent from my iPad
I forwarded Philipps information to this person offline.
thanks
Jim
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