Re: 50 free 8 inch floppies!

On Mon, 25 Jan 2021 at 03:54, Chris Zach via cctalk wrote: > > I'm offering > these disks for free. > > So if you need 50 disks with various versions of RT11 and god knows what > data on them or 50 frisbees let me know and they're yours for the cost > of shipping. I need to either pitch these thi

Re: 50 free 8 inch floppies!

On 1/24/21 9:53 PM, Chris Zach via cctalk wrote: Ok, with the RX02 running I see that 50 of these disks from Solarex were formatted with the FD: driver which is probably the MXV21 controller. Since I don't have a 5.4 version of this driver and to be honest will not be putting the MXV11 controll

50 free 8 inch floppies!

Ok, with the RX02 running I see that 50 of these disks from Solarex were formatted with the FD: driver which is probably the MXV21 controller. Since I don't have a 5.4 version of this driver and to be honest will not be putting the MXV11 controller online anytime soon I'm offering these disks f

Re: 8 inch floppies

On 12/16/19 11:54 AM, Chuck Guzis via cctalk wrote: On 12/16/19 9:02 AM, Eric Dittman via cctalk wrote: I have two Aerocomp flippy drives.  They have two index sensors and two write protect sensors so the disk doesn't need to be punched.  They were in external cases with a system I bought and w

Re: 8 inch floppies

On 12/16/19 9:02 AM, Eric Dittman via cctalk wrote: > > I have two Aerocomp flippy drives.  They have two index sensors and > two write protect sensors so the disk doesn't need to be punched.  They > were in external cases with a system I bought and when I opened them for > inspection before use I

Re: 8 inch floppies

On 12/13/19 8:42 PM, Chuck Guzis via cctalk wrote: Believe it or not, the "flippy" was actually patented in 1974. US3932895A ...and let's not forget the 3" CF2 diskettes--designed to be flippies right fron the get-go. BASF certainly marketed 5.25" flippies: https://cdn.instructables.com/FWP/3

Re: 8 inch floppies

Believe it or not, the "flippy" was actually patented in 1974. US3932895A ...and let's not forget the 3" CF2 diskettes--designed to be flippies right fron the get-go. BASF certainly marketed 5.25" flippies: https://cdn.instructables.com/FWP/3D0Z/GXL5XZ3U/FWP3D0ZGXL5XZ3U.LARGE.jpg --Chuck

Re: 8 inch floppies

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 man

Re: 8 inch floppies

On 12/13/19 8:22 PM, Chuck Guzis via cctalk wrote: > On 12/13/19 5:11 PM, Bill Gunshannon via cctalk wrote: > >> I never saw any flippies commercially made but many >> companies made punches for flippy 5.25" disks. I always >> had to make my own for 8". >> > > They were standard products. Let's

Re: 8 inch floppies

On 12/13/19 5:11 PM, Bill Gunshannon via cctalk wrote: > I never saw any flippies commercially made but many > companies made punches for flippy 5.25" disks. I always > had to make my own for 8". > They were standard products. Let's see if I can find a period ad... Well, not an ad, but a prec

Re: 8 inch floppies

On 12/13/19 7:10 PM, Chuck Guzis via cctalk wrote: > On 12/13/19 2:54 PM, Fred Cisin via cctalk wrote: >> On Fri, 13 Dec 2019, Chuck Guzis via cctalk wrote: >>> MDS was my guess also.   The MDS boxes ran the standard CP/M distro from >>> DRI--no customization needed. (The same was true for MP/M--a

Re: 8 inch floppies

On 12/13/19 3:52 PM, David Barto via cctalk wrote: > Those would have fit a Terak system for UCSD Pascal. I’ve still got a few > stuffed in a closet. > David > >> On Dec 13, 2019, at 12:09 PM, Al Kossow via cctalk >> wrote: >> >> anyone know what system these floppies are for? >> https://

Re: 8 inch floppies

On 12/13/19 4:41 PM, Fred Cisin via cctalk wrote: > But the variant types don't invalidate your hypothesis of what system, > any more than finding a few extraneous Macintosh diskettes in the box > for your Windows disks.  I assume that you are right, but there are some > others thrown in. > ("How

Re: 8 inch floppies

On Fri, 13 Dec 2019, Chuck Guzis via cctalk wrote: Some could also be "flippies". Those were made by several manufacturers. . . . and almost 40 years ago, for my first marketed product, I made and marketed plexiglass pocket shaped jigs for marking diskettes for punching them. Several models

Re: 8 inch floppies

> On Dec 13, 2019, at 2:35 PM, Fred Cisin via cctalk > wrote: > > Unless Dave Barto has some insider information about this group of disks, I > don't see anything to support the contention that they are Terak UCSD Pascal. > Although, if reformatted, they certainly could be usable. My guess

Re: 8 inch floppies

On 12/13/19 2:54 PM, Fred Cisin via cctalk wrote: > On Fri, 13 Dec 2019, Chuck Guzis via cctalk wrote: >> MDS was my guess also.   The MDS boxes ran the standard CP/M distro from >> DRI--no customization needed. (The same was true for MP/M--a second >> console was provided via the current-loop inte

Re: 8 inch floppies

On Fri, 13 Dec 2019, Chuck Guzis via cctalk wrote: MDS was my guess also. The MDS boxes ran the standard CP/M distro from DRI--no customization needed. (The same was true for MP/M--a second console was provided via the current-loop interface). At any rate, it all fits. I wouldn't be surprise

Re: 8 inch floppies

On 12/13/19 2:17 PM, Dave Mabry via cctalk wrote: > There are three that appear to be Intel MDS diskettes.  The ones marked > ISIS V4.3 is, as I remember, the last version of ISIS-II that Intel > released.  ASM51 and RL51 appear to be assembler and relocater for the > 8051 series of microcontrolle

Re: 8 inch floppies

https://www.ebay.com/itm/Lot-of-33-8-034-Floppy-Disks-/184071352445 Some are labeled "MRX", "CP/M", "Isis", "Chip-?","PROM?", I do not see any that are labeled "Terak", "UCSD", or "Pascal" At least some of them say, "single-sided, soft-sectored double density", some say "double sided", so they w

Re: 8 inch floppies

Fred Cisin via cctalk wrote on 12/13/2019 4:11 PM: On Fri, 13 Dec 2019, David Barto via cctalk wrote: Those would have fit a Terak system for UCSD Pascal. I’ve still got a few stuffed in a closet. David On Dec 13, 2019, at 12:09 PM, Al Kossow via cctalk wrote: anyone know what system the

Re: 8 inch floppies

On Fri, 13 Dec 2019, David Barto via cctalk wrote: Those would have fit a Terak system for UCSD Pascal. I’ve still got a few stuffed in a closet. David On Dec 13, 2019, at 12:09 PM, Al Kossow via cctalk wrote: anyone know what system these floppies are for? https://www.ebay.com/itm/Lo

Re: 8 inch floppies

Those would have fit a Terak system for UCSD Pascal. I’ve still got a few stuffed in a closet. David > On Dec 13, 2019, at 12:09 PM, Al Kossow via cctalk > wrote: > > anyone know what system these floppies are for? > https://www.ebay.com/itm/Lot-of-33-8-034-Floppy-Disks-/184071352445 >

8 inch floppies

anyone know what system these floppies are for? https://www.ebay.com/itm/Lot-of-33-8-034-Floppy-Disks-/184071352445

Re: 8 inch floppies

>Besides convenient recreational Facebook access >for staff technicians, why >>is web browsing implemented on MRI control >computers or on WOPR?Because most >apps used in the hospital (e.g. CERNER, EPIC, MedNet, teletracking, >scheduling, etc.) Sre implemented as web apps many served from offsi

Re: 8 inch floppies

On Sat, 26 Oct 2019, Nigel Johnson via cctalk wrote: 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! Do they do a lot of decapping and repairing I

Re: 8 inch floppies

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 yest

Re: 8 inch floppies

Hidden behind a NYTimes paywall, . . . news yesterday that the 8 inch drive nuclear weapions system has now been updated. On Sat, 26 Oct 2019, John Foust via cctalk wrote: And what media or method did they upgrade to? Top secret? Here's a different version of the story:

Re: 8 inch floppies

My question is where can I get the disk drives? On 10/26/2019 3:43 PM, Chris Zach via cctalk wrote: The far more interesting question is just how many nuclear devices were "missing" in the recount CZ On 10/26/2019 11:28 AM, John Foust via cctalk wrote: At 09:43 PM 10/25/2019, you wrote:

Re: 8 inch floppies

The far more interesting question is just how many nuclear devices were "missing" in the recount CZ On 10/26/2019 11:28 AM, John Foust via cctalk wrote: At 09:43 PM 10/25/2019, you wrote: Hidden behind a NYTimes paywall, . . . news yesterday that the 8 inch drive nuclear weapions system h

Re: 8 inch floppies

At 09:43 PM 10/25/2019, you wrote: >Hidden behind a NYTimes paywall, . . . >news yesterday that the 8 inch drive nuclear weapions system has now been >updated. And what media or method did they upgrade to? Top secret? Here's a different version of the story:

8 inch floppies

Hidden behind a NYTimes paywall, . . . news yesterday that the 8 inch drive nuclear weapions system has now been updated. Don't you feel safer that it is now on the interwebs, and doing windows updates every day? "Update Complete: U.S. Nuclear Weapons No Longer Need Floppy Disks The Defense

Re: 8 inch floppies, decaying

On 07/12/2018 09:05 PM, David C. Jenner via cctech wrote: > Would Chuck's temperature and Al's oven be appropriate for old magtapes, > too? My "cooker" is home-built and heavily insulated. It has a 75W incandescent for heat and a low-speed fan for circulation. I use a PID controller to keep the

Re: 8 inch floppies, decaying

Would Chuck's temperature and Al's oven be appropriate for old magtapes, too? On 7/11/18 9:10 AM, Al Kossow via cctech wrote: On 7/11/18 8:57 AM, Rob Jarratt via cctalk wrote: Be wary though, domestic ovens apparently fluctuate wildly. Use a food dehydrator this is the unit I use for QIC

Re: 8 inch floppies, decaying

On Wed, 11 Jul 2018 at 20:05, Fred Cisin via cctalk wrote: > > Don't use pumice to clean off the pumas. (they won't like it) > Stick with well whale oil. Also great for rosewood, I hear. -- Liam Proven - Profile: https://about.me/liamproven Email: lpro...@cix.co.uk - Google Mail/Hangouts/Plus:

Re: 8 inch floppies, decaying

On Wed, 11 Jul 2018, Al Kossow wrote: On 7/11/18 2:21 AM, Christian Corti via cctalk wrote: I use Screen 99 for cleaning floppies MSDS https://store.comet.bg/download-file.php?id=16956 first ingredient listed; isopropyl alcohol Of course, somehow you need some "magic" in the stuff ;-) But a

Re: 8 inch floppies, decaying

I'm the victim of the spell checker. Thanks for the fix. Dwight From: cctalk on behalf of Fred Cisin via cctalk Sent: Wednesday, July 11, 2018 11:05:43 AM To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: 8 inch floppies, decaying On We

Re: 8 inch floppies, decaying

On Wed, 11 Jul 2018, dwight via cctalk wrote: Next is the smooth orange oil hand cleaner. ( not the stuff with pumas ). Really cleans things great and good for killing ants. Again, rinse maybe it might need a little detergent and then rinse. Don't use pumice to clean off the pumas. (they won'

Re: 8 inch floppies, decaying

I forgot one Butter. Also needs detergent cleaning afterwards. Dwight From: cctalk on behalf of dwight via cctalk Sent: Wednesday, July 11, 2018 10:29:41 AM To: Al Kossow; General Discussion: On-Topic and Off-Topic Posts Subject: Re: 8 inch floppies

Re: 8 inch floppies, decaying

27;d go with Chuck's advice. He has done more work with disk and tapes than anyone here else except possibly Al. Dwight From: cctalk on behalf of Al Kossow via cctalk Sent: Wednesday, July 11, 2018 9:10:14 AM To: cctalk@classiccmp.org Subject: Re: 8 inch

Re: 8 inch floppies, decaying

On 7/11/18 8:57 AM, Rob Jarratt via cctalk wrote: > Be wary though, domestic ovens apparently fluctuate wildly. Use a food dehydrator this is the unit I use for QIC tapes (weston 10 tray stainless steel dehydrator model 74-1001-2) https://www.ebay.com/itm//113143490361 but I do them a coupl

RE: 8 inch floppies, decaying

Be wary though, domestic ovens apparently fluctuate wildly. I did have success with some TK50s in our fan oven set at 40C Sent from my Windows 10 phone From: Chuck Guzis via cctalk Sent: 11 July 2018 16:31 To: Adrian Graham via cctalk Subject: Re: 8 inch floppies, decaying On 07/11/2018 02:53

Re: 8 inch floppies, decaying

On 7/11/18 8:20 AM, Al Kossow via cctalk wrote: > > > On 7/11/18 2:21 AM, Christian Corti via cctalk wrote: > >> I use Screen 99 for cleaning floppies > > MSDS > > https://store.comet.bg/download-file.php?id=16956 > > first ingredient listed; isopropyl alcohol > > Since I haven't menti

Re: 8 inch floppies, decaying

On 07/11/2018 02:53 AM, Adrian Graham via cctalk wrote: > What temperature oven? 58C +/- 0.5C --Chuck

Re: 8 inch floppies, decaying

On 7/11/18 2:21 AM, Christian Corti via cctalk wrote: > I use Screen 99 for cleaning floppies MSDS https://store.comet.bg/download-file.php?id=16956 first ingredient listed; isopropyl alcohol

Re: 8 inch floppies, decaying

> On 11 Jul 2018, at 03:15, Chuck Guzis via cctalk > wrote: > > No, no, no! Do not use isopropanol to clean floppies--you'll wind up > with a soft oxide coating and a brown rag. Were these mine, I'd first > remove them from their jackets and then bake them and then clean them > with distilled

Re: 8 inch floppies, decaying

> On 11 Jul 2018, at 09:33, Terry Stewart via cctalk > wrote: > > Just my experience, I once did a trial where I took two identical 5,25 > inch disks of the same batch from the same manufacturer. These were clean > disks which both formatted and verified just fine, but I wanted to see if > I

Re: 8 inch floppies, decaying

On Wed, 11 Jul 2018, dwight wrote: I've had the goo from the adhesive of 5.25 inch 360k disk come through the nice liner and make gobs on the disk. I tried several thing but found that isopropanol worked without removing any of the magnetic material ( maybe s tiny amount that was likely loose a

Re: 8 inch floppies, decaying

Just my experience, I once did a trial where I took two identical 5,25 inch disks of the same batch from the same manufacturer. These were clean disks which both formatted and verified just fine, but I wanted to see if IPA did indeed damage the disk. One I swabbed one with 75% IPA, the other wit

Re: 8 inch floppies, decaying

Fred asked > What concentration of IPA were you using? 99% Laboratory grade. Not very pleasant to have on the skin, it dries it out shockingly. > There might be a difference in results between 70% and 91% > > There might also even be a difference in the oxide formulation between > brands. (If C

Re: 8 inch floppies, decaying

On 07/10/2018 09:14 PM, Steve Malikoff via cctalk wrote: > So there you have it. I'm not asserting that all diskettes were manufactured > as well as this IBM one but I stand by > what I suggested, I would certainly try IPA again if I had to. By the 1970s I > would think a diskette surface had co

Re: 8 inch floppies, decaying

No, no, no! Do not use isopropanol to clean floppies--you'll wind up On Wed, 11 Jul 2018, Steve Malikoff via cctalk wrote: Well, I suggested IPA (to Chuck's horror) so decided to put my money where my mouth is and try it myself. Using a 38-year old 8" IBM Diskette 1 (128-bit sectors) that I ha

Re: 8 inch floppies, decaying

Chuck reckoned > No, no, no! Do not use isopropanol to clean floppies--you'll wind up > with a soft oxide coating and a brown rag. Were these mine, I'd first > remove them from their jackets and then bake them and then clean them > with distilled water and perhaps a couple of drops of a wetting ag

Re: 8 inch floppies, decaying

g it would be the same for 8 inch disk. Once working I did copy them to floppies without liners. Dwight From: cctalk on behalf of Chuck Guzis via cctalk Sent: Tuesday, July 10, 2018 7:15:13 PM To: Richard Pope via cctalk Subject: Re: 8 inch floppies, decaying

Re: 8 inch floppies, decaying

No, no, no! Do not use isopropanol to clean floppies--you'll wind up with a soft oxide coating and a brown rag. Were these mine, I'd first remove them from their jackets and then bake them and then clean them with distilled water and perhaps a couple of drops of a wetting agent (Kodak Photo-flo is

Re: 8 inch floppies, decaying

Steve, Adrian, I am pretty certain that alcohol will break down the binders and remove the oxide. Since the bad disc was run through the drive the head/heads should be cleaned before any more read or write attempts are made otherwise more discs will be damaged. Thanks, rich! On 7/10/2018

Re: 8 inch floppies, decaying

Adrian said: > Tonight I got my imaging PC to successfully read some of the 8” disks from my > CPT8500 word processor using one of its own Tandon TM848-01 drives, sadly it > seems the boot disk is toast but I’ve been able to dump some of the data > disks as well as the Utilities. Since I have a

8 inch floppies, decaying

Hi folks, Tonight I got my imaging PC to successfully read some of the 8” disks from my CPT8500 word processor using one of its own Tandon TM848-01 drives, sadly it seems the boot disk is toast but I’ve been able to dump some of the data disks as well as the Utilities. Since I have a box of unu

8 inch floppies-Wang, TRS80, Peachtree, perfect software, much more. Some 8 inch drives also.

If interested, please contact me off list. Thanks, Paul