3.5"
Floppy Disks]
On 09/05/2024 03:41, D. Resor via cctalk wrote:
> Next they'll want silver oxygen free plated plumbing and sewage pipes in
> their homes. Silver plated toilet seats?
>
> Walls insulated with Palladium coated corn silk threads?
>
> Seems the subject has re
Next they'll want silver oxygen free plated plumbing and sewage pipes in their
homes. Silver plated toilet seats?
Walls insulated with Palladium coated corn silk threads?
Seems the subject has really gone astray? Lions, Tigers and Bears oh my! )
Don Resor
-Original Message-
What is the purpose of the two microswitches seen in the upper right of the
video view?
Could one or both of those be intermittent? Have they been tested for
continuity/intermittence with an analog VOM?
Don Resor
-Original Message-
From: Dominique Carlier via cctalk
Sent:
Here is the article I found, but I suppose others have already seen this?
The legendary Ziglog Z80 CPU is being discontinued after nearly 50 years
https://www.techspot.com/news/102684-zilog-discontinuing-z80-microprocessor-after-almost-50-years.html
Seems while the Ziglog EZ80 is compatible and
: WEB via cctalk
Sent: Friday, October 06, 2023 3:03 AM
To: cctalk@classiccmp.org
Cc: WEB
Subject: [cctalk] Re: Obsolete Parts Unicorn Electronics
On 06.10.2023 03:10, D. Resor via cctalk wrote:
> I recently had a need for BC308 transistors. Of course those have
> been unobtanium for
I recently had a need for BC308 transistors. Of course those have been
unobtanium for quite some time.
My search beyond a distributor then went to eBay where I found Unicorn
Electronics.
More to the point I see from their website Apple 1, Apple ][ and Apple 1a
Kits along with Apple 1 and Apple
Is there a list of floppy disk drives which could read and write both 3.5"
1.44mb and 720k diskettes?
A product line of musical instruments (General Music/Ahlborn-Galanti) I
service use 3.5" 720K DD floppy disk drives.
I've never had any problems formatting or backing up data files prior
Sophomore year of high school for me in 1978.
My mother thought it would be a good idea. She was right!
Standard size Olympia manual typewriters.
Donald R. Resor Jr. T. W. & T. C. Svc. Co.
http://hammondorganservice.com
Hammond USA warranty service
"Most people don’t have a sense of
Best I can tell the diodes are Passivated Silicon, Bead diodes, of which there
are three flavors.
https://pdf1.alldatasheet.com/datasheet-pdf/view/1073401/NJSEMI/A15A.html
On EEVBlog it was suggested that these were Sintered Glass Bead diodes.
I do believe they are still in okay working
mains-powered vintage
equipment for these little stinkbombs. If they're present, i'll always replace.
Cheers, Josh
-- Original Message --
From: "D. Resor via cctalk"
To: "Classic Computer Mailing List"
Cc: "D. Resor"
Sent: Thursday, 13 Oct, 2022 At 12:24
Sub
Where might I find a schematic diagram for the Xerox U07 8" FDD,HDD
expansion cabinet for the 820II, and/or the 105P80450 power supply?
The Xerox Professional Computer Technical Reference Manual I downloaded from
bitsavers.org doesn't seem to have those particular schematic diagrams.
For your
I have contacted the seller, and kindly asked as a gentlemanly as I possibly
could.
I'll see what happens
Don Resor
-Original Message-
From: Sellam Abraham via cctalk
Sent: Tuesday, October 11, 2022 7:16 AM
To: General Discussion: On-Topic and Off-Topic Posts
Cc: Sellam Abraham
I have a long shelf filled with boxes of 8" floppy diskettes. Data on many and
a bunch of NOS sealed product I have held onto. From the crazy asking prices I
am seeing on eBay (As if they are collector's items/antiques), I could sell
them by the box for the same price Xerox charged during the
cases
Of you're near kennettsquare, PAI have a few
On Tue, Oct 11, 2022, 9:01 AM geneb via cctalk
wrote:
> On Mon, 10 Oct 2022, D. Resor via cctalk wrote:
>
> > Does anyone have, or know of a reasonably priced supplier of good
> > clean used, or new 8" floppy diskette boxes? T
There is the ability to ship via Media Mail for documentation. I try to buy
documents this way, as well as good ole vinyl records.
Several years ago eBay decided they wanted to "profit" from shipping costs.
This was supposedly to alleviate shipping cost gouging. I doubt this has
helped
Does anyone have, or know of a reasonably priced supplier of good clean
used, or new 8" floppy diskette boxes? The kind made of plastic like these?
https://www.ebay.com/itm/134258177087
I have one 8" box with Xerox software in which the plastic literally
crumbling.
The price this seller
Posts
Cc: John Herron
Subject: [cctalk] Re: Identity of this PII PC Main board?
Maybe this pc chips m720 motherboard?
http://hw-museum.cz/mb/69/pc-chips-m720
On Tue, Sep 13, 2022, 1:11 AM D. Resor via cctalk
wrote:
>
> The seller has this listed as a Gigabyte GA-6BXU Rev 1.5 main
free returns, both as a policy and
in the description.
Maybe give the seller more time to respond?
Sellam
On Mon, Sep 12, 2022 at 11:06 PM D. Resor via cctalk
wrote:
>
> The seller has this listed as a Gigabyte GA-6BXU Rev 1.5 mainboard.
>
> https://www.ebay.com/itm/195259246091
&
The seller has this listed as a Gigabyte GA-6BXU Rev 1.5 mainboard.
https://www.ebay.com/itm/195259246091
According to Gigabyte's website the GA-6BXU has only one CPU slot. This one
as you can see has two.
The only dual Pentium II slot main board I could find manufactured by
Gigabyte is
The seller has this listed as a Gigabyte GA-6BXU Rev 1.5 mainboard.
https://www.ebay.com/itm/195259246091
According to Gigabyte's website the GA-6BXU has only one CPU slot. This one
as you can see has two.
The only dual Pentium II slot main board I could find manufactured by
Gigabyte is
Syncrotech sent me the demo version of Elan Memory Card Explorer version
3.21 which is matched for use with the Elan P423 PCMCIA Card Reader/Writer
and in the Windows XP environment.
The demo version has 30 days use to try it in set-up mode, but only 5
"lives" in full function mode. To make it
I was looking at this page on DigiBarn,
https://www.digibarn.com/collections/parts/ethernet-taps/index.html
and the old Ethernet transceivers. For the life of me I cannot remember
what the transceivers used with the Xerox 6085 (Daybreak) looked like in
1989.
There was wall to wall Xerox 8000
for time prior to that spent in
development, I'm guessing that it's not microprocessor-based. (Whereas the 820
is.)
Eric
On Sat, Jul 2, 2022, 03:50 D. Resor via cctalk mailto:cctalk@classiccmp.org> > wrote:
This video just popped up in my YT view. It was posted a couple days ago.
At t
A little more information I found while digging. It should have dawned on me
when the card info is displayed in MCE.
The cards are AMD Type D P/N FAD004
http://www.psism.com/flashfad.htm
More info here too:
https://www.synchrotech.com/products/linear-flash-pcmcia-card_01.html
The prices for
On Behalf Of D. Resor via cctalk
Sent: Thursday, July 07, 2022 12:26 AM
To: 'General Discussion: On-Topic and Off-Topic Posts' ;
'Glen Slick'
Subject: RE: Memory Card Explorer for the Elan P423
Upon trying to read, write or compare I am getting chksum error "Failed to
Chksum after Erase!
CMCIA card must be inserted before you start MCE. Now it
sees the card in Slot #1 as AMD C/D Flash 4MB.
Geez do I feel stooopid.
Don Resor
-Original Message-
From: cctalk On Behalf Of D. Resor via cctalk
Sent: Wednesday, July 06, 2022 8:44 PM
To: 'Glen Slick' ; 'General Discussion: On-Topic
Seems I forgot the PCMCIA card must be inserted before you start MCE. Now it
sees the card in Slot #1 as AMD C/D Flash 4MB.
Geez do I feel stooopid.
Don Resor
-Original Message-
From: cctalk On Behalf Of D. Resor via cctalk
Sent: Wednesday, July 06, 2022 8:44 PM
To: 'Glen Slick
Here is the link to Ricoh Memory Card Explorer's support page. There is a
links to download the different versions.
http://support.ricoh.com/mcericoh/home.html
Here you will find towards the bottom of the page the user manual for Elan's
Memory Card Explorer (MCE User Guide).
The Ricoh version of Memory Card Explorer uses a proprietary file format. This
also requires their approved PCMCIA card which is also in their own proprietary
file format. The PCMCIA card which Ricoh uses P/N 803-6701 is a 4Mb Linear
Flash Card. It has no write protect switch like other
Does anyone have past experience with Memory Card Explorer and the Elan P423
BUS to PC Car Reader-Writer 2 Slot Internal unit?
https://www.synchrotech.com/products/card-rw_33_p423_elan_pcmcia_pc-card_rea
der_slot.html
Memory Card Explorer has certain compatibility rules for the Motherboard it
is
This video just popped up in my YT view. It was posted a couple days ago.
At the end of the video, a recap of several Xerox computer products are
shown.
XEROX Word Processing Machines & Computers 1975 (Xerox 800 vintage promo
film)
https://youtu.be/Zkl80BAiaIw
Computer History Archive
Don
can. That will help determine if it is driven by a signal or a
hard tied wire. Lower left and upper right should be ground and power pins.
Dwight
_
From: cctalk on behalf of D. Resor via
cctalk
Sent: Sunday, March 20, 2022 6:53 PM
To: 'General Discussion: On-Topic and Off-Topic Posts
I've taken and uploaded some larger easy to view images of the processor board
component and solder sides.
One plus is the eproms are socketed.
I've uploaded an image showing the silk screening stamp on the underside of the
eproms.
Now that I look closer at the Power Supply PWB I see it too
I cannot find a datasheet by any of the numbers silkscreened on these ICs.
Could these be proprietary IBM P/N numbers?
https://www.dropbox.com/s/f6rvemx9ldbbv5x/EPROMS1.jpg?dl=0
No need for a Dropbox account, close the login pop up and you can view the
image.
Thanks
Don Resor
very large stock of OLD aluminum covered ICs in as
many products possible I guess.
Don Resor
-Original Message-
From: wrco...@wrcooke.net
Sent: Sunday, March 20, 2022 7:13 PM
To: D. Resor
Subject: Re: ID UV erasable PROMS used on an IBM PC board?
> On 03/20/2022 8:59 PM D. Resor
I cannot find a datasheet by any of the numbers silkscreened on these ICs.
Could these be proprietary IBM P/N numbers?
https://www.dropbox.com/s/f6rvemx9ldbbv5x/EPROMS1.jpg?dl=0
No need for a Dropbox account, close the login pop up and you can view the
image.
Thanks
Don Resor
On Behalf Of Brent Hilpert via
cctalk
Sent: Thursday, March 17, 2022 5:57 PM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: IBM 5110 (5100)
On 2022-Mar-17, at 5:02 PM, D. Resor via cctalk wrote:
> Was the computer auction in question a 5100 or a 5110?
>
> Presen
Was the computer auction in question a 5100 or a 5110?
Presently I see there is a 5110-C for sale
https://www.ebay.com/itm/294865912729
There were also a 5110 with 8" external drives and a printer which sold:
https://www.ebay.com/itm/304377532685
Don Resor
That ain't no IBM model B
Looks more like a Remington Electric with the double carriage return paddles.
But by the plate and a quick search it is indeed an Imperial Electric.
https://coimages.sciencemuseumgroup.org.uk/images/321/117/medium_SMG00177358.jpg
Donald R. Resor Jr. T. W. & T. C.
Is anyone familiar with the IBM 6731 Diskette Module from around 1984 which
gave the IBM Electronic 85 and 95 Selectric Typewriters the ability to store
created documents to a 5.25" floppy diskette?
There was also a 5.25" diskette which was nicknamed "IPL" for "initial
program load", and an
Is anyone familiar with the IBM 6731 Diskette Module from around 1984 which
gave the IBM Electronic 85 and 95 Selectric Typewriters the ability to store
created documents to a 5.25" floppy diskette?
There was also a 5.25" diskette which was nicknamed "IPL" for "initial
program load", and an
The golfballtypewritershop list groups.io, though there is only around 30+
members.
The foolish created a Facebook group where there are several hundred gambling
fools.
I'll take no part in Facebook ever again, and therefore have regained a little
privacy back.
Meanwhile Mozilla Firefox is
Here's what's been archived for one of the two websites:
https://web.archive.org/web/*/control-data.info
Donald R. Resor Jr. T. W. & T. C. Svc. Co.
http://hammondorganservice.com
Hammond USA warranty service
"Most people don’t have a sense of humor. They think they do, but they don’t."
Mark,
In a search I found some downloadable reference cards for the Silent 700
Model 703 here:
https://user.xmission.com/~legalize/vintage/docs.html
I thought you were more of a clunky Model 37 or 43 kind of guy...
Don Resor
-Original Message-
From: cctalk On Behalf Of
Actually it did sell.. $200.00
https://www.ebay.com/itm/294429449623
Unfortunately anything Selectric must be packed carefully as it can be easily
damaged in shipping. I have read many horror stories on the Typewriters user
group of this happening.
Don Resor
-Original Message-
Seems it's back up and running.?
https://mc.livingcomputers.org/
Don Resor
-Original Message-
From: cctalk On Behalf Of Bill Gunshannon via
cctalk
Sent: Friday, July 23, 2021 5:17 PM
To: Zane Healy ; General Discussion: On-Topic and
Off-Topic Posts
Subject: Re: LCM Accounts?
It seems at least on the first page of their listings, $899.99 is a favorite
asking price?
https://www.ebay.com/str/vintagecomputermuseumservices?_trksid=p2047675.l256
3
Don Resor
nesday, May 12, 2021 11:27 PM
To: D. Resor ; General Discussion: On-Topic and
Off-Topic Posts
Subject: Re: MOPPY.
Here is a somewhat advanced version:
https://www.youtube.com/watch?v=Oym7B7YidKs
Enjoy
Tom Hunter
On Thu, May 13, 2021 at 2:00 PM D. Resor via cctalk mailto:cctalk@classiccm
Which is closer to being vintage, the sounds made, or the floppy disk drives
themselves?
Moppy + Star Wars Theme = Floppy Vader's Theme
https://youtu.be/LdgzsF_O7oI
Donald R. Resor Jr. T. W. & T. C. Svc. Co.
http://hammondorganservice.com
Hammond USA warranty service
"Most people don't have a
Correction, 10 Parts
Don Resor
N6KAW
-Original Message-
From: cctech On Behalf Of D. Resor via cctech
Sent: Monday, April 12, 2021 10:08 PM
To: 'Bill Degnan' ; 'General Discussion: On-Topic Posts'
Subject: RE: Looking for video (or photos) depicting how to remove ASR 33
printer from
This might be a start
https://www.soemtron.org/teletypemanuals.html
Here also is a restoration set of videos It seems there are eight parts
and this was uploaded recently.
ASR33 Restoration
https://youtu.be/pEzpYHb4p5w
Don Resor
N6KAW
-Original Message-
From: cctech On
on the
PWB of the card here:
https://www.datasheetarchive.com/pdf/download.php?id=11082c69f543ba2dc23ee78386ce2ce49debd2=O=EPC032IEC0
Thanks for giving me a shove in the right direction.
Don Resor
-Original Message-
From: cctalk On Behalf Of D. Resor via cctalk
Sent: Sunday, April 11
Guzis ; General Discussion: On-Topic and Off-Topic
Posts
Subject: Re: Mitsubishi Melcard (edge connect type)
Isnt that the epson card standard?
Enviado do meu Tele-Movel
Em dom, 11 de abr de 2021 14:37, Chuck Guzis via cctalk <
cctalk@classiccmp.org> escreveu:
> On 4/11/21 7:08 AM,
Does anyone recall what kind of hardware/software was used to read/write the
early Mitsubishi Melcard EPROM cards with the PCB edge connector contacts?
It was explained to me by someone that a EPROM programmer could be used,
however I've never seen a socket which fits the edge card connector of
I did not say it was The Dover was a SLOT (Scanned Laser Output Terminal)
using the EARS protocol (Ethernet, Alto, Research character generator, Scanned
laser output terminal).
The Dover Laser Printer however was used with the Xerox Alto.
Was the 9700 the first Xerox Interpress Laser
the same physical dimensions as a Xerox 2400?
https://xeroxnostalgia.com/category/2400/
Don Resor
N6KAW
-Original Message-
From: cctalk On Behalf Of D. Resor via cctalk
Sent: Wednesday, March 31, 2021 10:28 PM
To: 'Tony Aiuto' ; 'General Discussion: On-Topic and
Off-Topic Posts'
Subject
In a quick search I found this...
PostScript and Interpress: a comparison
http://www.mostlycolor.ch/2010/07/postscript-and-interpress-comparison.html
Seems the first printer was referred to "Dover"?
Don Resor
N6KAW
-Original Message-
From: cctalk On Behalf Of Tony Aiuto via cctalk
I thought I had seen this before...
EEVblog teardown of a ES9000 processor.
https://youtu.be/xQ3oJlt4GrI
Don Resor
N6KAW
-Original Message-
From: cctalk On Behalf Of Kevin Lee via
cctalk
Sent: Wednesday, March 31, 2021 9:15 PM
To: cctalk@classiccmp.org
Subject: IBM cpu tear down
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