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 on
other instruments. Tuesday, I attempted to format a floppy disk using the
instrument's internal FDD prior to backing up the data files. After the
format an error appears "corrupted data". Which could mean so several
different things from a bad floppy drive, etc.
I currently have one box of Sony MFD-2DD 3.5" 720K Double Density Floppy
diskettes which were bought new a few years ago, kept in their box, and
stored in a dust free place. I've used them prior for the same purpose with
no problems.
I'd like to be able to verify at home that the diskettes haven't all
suddenly gone bad.
Thanks
Don Resor
Hello Vintage Computer Enthusiasts!
VCF SouthWest (VCFSW) is returning to Dallas after a long hiatus! We will
be gathering June 23rd to 25th, details at https://www.vcfsw.org/
We are seeking speakers, exhibitors, vendors, sponsors, and volunteers!
We already have some great speakers and panels lined up, and are looking
for people with stories to tell about computing in Texas especially.
Details and a sign up form are on the website for signing up as an
exhibitor or vendor, and speakers can contact the organizers at
vcfsouthwest(a)gmail.com
Vendor and exhibitor tables are $50 each, and we have a limited number of
tables available inside. After the inside tables are sold, we will consider
selling outdoor vendor spaces if there is demand.
Sponsor packages are available, starting at $250. This includes prime
vendor space if desired, and placement of the sponsors logo and promotional
materials proportionate to the amount of the sponsorship.
Please contact us with any questions, ideas, or concerns.
Thank you for being awesome and supporting the vintage computer community!
Is anyone familiar with the 50-pin IDE interface, which I think is called
ATA-3? It is from around 1997-2002. Normally IDE is 40-pin, or in
laptops might be a 44-pin.
But in a COMPAQ Presario 1220, I've come across its hard drive that is
using this 50-pin interface (two rows of 25-pin that are quite
small/tightly spaced - moreso than even PCMCIA).
I believe it is different (electrically) than the 1.8" 50-pin interface. I
ordered a CF-to-50-pin adapter that is intended for those 1.8" drives, and
it won't work on this ATA-2 port (system won't boot with it inserted).
However, all my CF cards are larger than 2GB - so I'm not sure if that was
the issue (don't think so, I think even with 8GB or larger it would still
at least try to boot).
The 2GB drive in this Presario (with the "weird' 50-pin IDE) contains
Windows ME and Office 2000. That's cute, but I'm not so interested in that
- I was hoping to image that drive for archive, then install something else
(OS2). But I can't find any "ATA-3 to normal 40-pin IDE" adapter.
I think the "6 extra pins" on this 50-pin (relative to normal 44-pin laptop
drives of those days) -- 2 of those pins (5-6) aren't used (maybe a kind of
key) and the 4 others (1-4) are vendor specific. So I may just be out of
luck here in upgrading or replacing this drive with a more modern
solution. But wanted to run it by the crew here before giving up.
Thanks,
-Steve / v*
Hey all,
So, being the new owner of a AS/400 9401-150, I am looking for a 2723-9406
LAN card for it.
Does anyone have one they wouldn't mind parting with by chance?
-Peter
> Most likely, the 3-mode drive. 8x1024 sectors on each track, giving a
> capacity of about 1.23MB. Many PCs of the era could also handle the
> drives, which would change spindle speed from 300 to 360 RPM. 3 mode
> drives were manufactured right up until the end, but usually were
> configured as 2-mode (720/1.44) unless jumpering changes were made to
> the drive.
Chuck,
Yes, R. Stricklin (Bear) verified it as such. So have you ever seen a Tri
Density drive? Or was it just a paper announcement that never made it out of
the lab? I'd figure if anyone may have seen one it would be you ;)
-Ali
Oi.
So after finally getting things going I started copying the Pro/380 OS
files to a bunch of 1.2mb floppies. Great. However after a bit I started
getting errors, and found that the disks were getting gouges in the
tracks. Sure enough disassembly of my 1.2mb Teac showed that debris had
become embedded in the disk head and cleaning is not possible.
Terrific. Tossing the drive, this is not the first time I have had this
problem with these disks so I am dumpstering all of the old floppies and
just bought 40 new ones in sealed boxes.
However I'm now in need of a 1.2mb floppy drive. Anyone have a good
working spare that I can beg/borrow/buy in the MD area?
Thanks!
CZ
(I really should have pitched these disks; they came from a basement
with an oil heater for 20 years and are quite honestly garbage. Only
thing worse were disks from Solarex which literally had silicon dust on
them that chewed any drive. Oh well, live and learn)
I did some research as to where Dean and Molly (Mary Alice) Hendrickson lived and the address I come up with is 20 Interlaken Road, Greenwich, CT 06830. There is no street view on Google but from the satellite photo it looks like it could be the same house as I seem some of what appear to be similar curved features on the roof.
From: Tarek Hoteit via cctalk [mailto:cctalk@classiccmp.org]
Sent: Friday, March 24, 2023 10:23 PM
To: cctalk(a)classiccmp.org
Cc: Tarek Hoteit
Subject: [cctalk] Sun/Tronic House
Hi. I came across an article about the "Sun/Tronic House" in the July/August
1981 issue of Computers and Programming magazine.
The article references the Apple 2 as the computer that controls everything in the house that also relies on solar energy.
The house, per the article, is (or was) in Greenwich, Connecticut. I also found a photo of the house at https://urldefense.com/v3/__https://www.1000bit.it/storia/apple/suntronic_h…
I am curious to know if the house and the Apple IIs are still there. Anyone has a clue?
(A copy of the magazine is at
https://urldefense.com/v3/__https://archive.org/details/sim_computers-and-p…
1_4 page 38).
--
Regards,
Tarek Hoteit
In the golden age of the floppy before its downfall caused by CD-R, CD-RW
and flash USB a number of new technologies were introduced to allow for
cheap removable storage (Yes MO drives existed but they were expensive).
Many of the tech were a great step forward. For example the LS-240 drives
from Panasonic/3M (Imation) allowed reading and writing to 120MB, 240MB,
1.44MB, and 720KB disks. They were also compatible with weird formats like
IBM's XDF and even allowed the storage of 32MB on a standard 1.44MB floppy
disk. To be backwards compatible they used a separate read/write head for
regular floppies. However, none of the formats with backward compatibility
read or wrote to 2.88MB ED disks.
Anybody know why? Was it a licensing issue or the perception that ED
compatibility wasn't really required or desired? Or was it technical? I am
not sure if ED drives already made use of two read/write heads (one for
720/1.44 and one for 2.88) or just one? If it is the former one could see
how it would be hard to have three separate read/write heads in one unit...
On a separate note: was a TD (Triple Density) drive ever produced?
Apparently the technology existed all the way back in 1989 and would have
give 12.5MB on a standard physical sized (3.5") floppy:
https://www-computerwoche-de.translate.goog/a/hitachi-maxell-bietet-nec-neue
-12-5-mb-floppy-an,1155888?_x_tr_sl=de&_x_tr_tl=en&_x_tr_hl=en&_x_tr_pto=wap
p (original in German)
-Ali
Hi,
Has anyone been successful in communicating using cu or some
other method to transfer files between two SIMS running Unix V ?
If so I would appreciate some help.
Thanks,
Ken
--
WWL 📚
Looking for MCM68764 and I could probably use some TMS2532 as well.
I'm also always on the lookout for blank bipolar proms (chips stargin
with 82S, and compatables).
Anyone have any of these they don't need. New, used, needing erasing,
doesn't matter.
If you have any, let me know how many you have (of each if you have
both type) and what you are looking to get for them.
If you need more standard/bigger EPROMs, I can trade too.... have a
number of 2764, 27256, have some 27128 I think too, and maybe some 27512
?
I'd have to go digging.
Thanks,
-- Curt
