From the FDC point of view, which doesn't have optical view of the drive
and media, the 80 track DD 5.25" looks similar to a "720K 3.5" drive.
(80 tracks, 9 sectors per track, 300 RPM, 250K data transgfer rate)
On SOME PCs, setting the CMOS floppy setting to "720K" may take care of
it.
On Tu
DD 5.25" disks are about 300 Oersted.
HD 5.25" disks are about 600 Oersted.
If you use HD disks to write DD content, the data fades away real fast.
However, on 3.5" disks, the difference is more like 600 Oersted VS 750
Oersted, and you may get away with using the wrong disk.
360K disks are te
On Mon, 21 Feb 2022, Chris Zach via cctalk wrote:
I think installing 30 floppy disks would be an exercise in insanity:
No arguments there.
That
would probably wear down an RX50 drive to the nubbins.
Are RX50 drives less robust than what was used to install Windoze 95?
Covering more distance in the same time means increased speed to me!
On Tue, 1 Feb 2022, Jon Elson via cctalk wrote:
Clearly, on a disk, the outer tracks ARE moving faster, in terms of linear
velocity.
If the data is written at a constant data transfer rate, and the motion of
the disk is the
Many/most? early drives were CAV (Constant Angeular Velocity) with the
same amount of data on each track.
Therefore, the data transfer rate, once on the right track, was the same.
BUT, the bits were physically closer to each other on the inner (higher
numbered) tracks, and the error rate was s
On Tue, 1 Feb 2022, Peter Corlett via cctalk wrote:
FAT's *file* size limitation is indeed due to a 32 bit field. The ISO 9660
standard offers an "interesting" solution to that, namely having multiple
directory entries for the same filename. So if you want to store files
larger than 4GiB on a CD-
ences I see are: (1) layering: the
partition is below the file system. (2) partitions are originally entirely
static (set at creation and never changed) and even later on changed only
rarely and typically with substantial technical difficulty.
paul
--
Fred Cisin
On Mon, 31 Jan 2022, Grant Taylor via cctalk wrote:
I think the same type of problem happened with the really old FAT-12 to
FAT-16 conversion.
Wasn't FAT-12 limited to something near 31 MB?
On Mon, 31 Jan 2022, Fred Cisin via cctalk wrote:
32 MebiBytes - 1
On Mon, 31 Jan 2022, geneb
On Mon, 31 Jan 2022, Grant Taylor via cctalk wrote:
I think the same type of problem happened with the really old FAT-12 to
FAT-16 conversion.
Wasn't FAT-12 limited to something near 31 MB?
32 MebiBytes - 1
On Mon, 31 Jan 2022, Noel Chiappa via cctalk wrote:
Partitions may have appeared in DOS/Windows for much the same reason; with 32
KB clusters, FAT16 filesystems were limited to 2GB. I distinctly recall
having to use partitions when I bought a 13GB hard drive for my Windows 95
machine (FAT32 only
What's the going price for a Cray round sofa/bench?
I can only conclude you needed something to save the surface on one of
these...
https://www.thisiswhyimbroke.com/floppy-disk-table/
On Tue, 18 Jan 2022, Mike Katz via cctalk wrote:
I just love that table
Although the ad says "1.44 megabytes", it is a 720K.
The write enable notch is not o
On Tue, 18 Jan 2022, Peter Coghlan via cctalk wrote:
I can only conclude you needed something to save the surface on one of these...
https://www.thisiswhyimbroke.com/floppy-disk-table/
I have a RAMAC platter.
(24" diameter; arguably FIRST hard disk, from 1958?; when they wouldn't
let Nikita K
I really want to see this set produced, especially for the ???Ada Lovelace???
and ???Admiral Hopper??? portions of the set.
https://ideas.lego.com/blogs/a4ae09b6-0d4c-4307-9da8-3ee9f3d368d6/post/f39b7001-bf76-46ba-9d61-cb586f1c7a7d
https://ideas.lego.com/projects/3bf5b46c-6c87-4a2d-a2e1-d31ed0e2
On Fri, 26 Nov 2021, dwight via cctalk wrote:
Wasn't it Jim that had the house overlooking the Pacific ocean that was off
Skyline Blvd?
Dwight
Yes
I was never at that house, he came to Berkeley instead, but I'd heard
about it.
--
Grumpy Ol' Fred ci...@xenosoft.com
When he founded DDJ ("dr. dobb's journal Of Tiny BASIC Calisthenics
And Orthodontia : Running Light Without Overbyte"), they considered it to
be a reference, not a newspaper, and kept reprints of the old issues
available in bound form.
But, after Jim was gone, the title became merely "Dr. Dobb
On Tue, 23 Nov 2021, Bill Degnan via cctalk wrote:
Forgive me but I can't resist.
"Badges? We don't need no stinkin' badges"
https://en.wikipedia.org/wiki/Stinking_badges
:-)
Bill
Thank you.
I also had a disk for Oki (don't know if same model) with the Microsoft
Stand-Alone BASIC, instead of CP/M.
On Mon, 15 Nov 2021, pleasefixthisbrick via cctech wrote:
Unfortunately, the model 20 was a different architecture all together. I
have begun looking into Japanese museums. Maybe there
On Tue, 16 Nov 2021, Christian Gauger-Cosgrove via cctalk wrote:
Hmm now that I'm reminded that a large proportion of Commodore's
"stuff" was IEEE 488 or a serialized version thereof.
Was that called "IEC"?
I kind of want to see now if an IBV11 and Commodore 1541 can be abused
into cooperatin
On Tue, 16 Nov 2021, Murray McCullough via cctalk wrote:
Did the 4004 chip start our interest in microcomputing?
For ME, hearing about the 4004 was the first solid assurance that tabletop
computers would become available. I heard some mentions of it from cow-
orkers at Goddard Space Flight Ce
On Thu, 11 Nov 2021, pleasefixthisbrick via cctech wrote:
I seem to have the only one in America, and I am trying to find documentation
on it. I have already backed up ROM's and it's custom CP/M build. I am
looking for in depth documentation that I can reference to get this machine
functioni
Vault Corporation produced "Prolok" with a physical defect. To make it
On Tue, 2 Nov 2021, Ali wrote:
Which could be defeated w/ the Copy II Plus Enhanced Option board:
http://retro.icequake.net/dob/img/eob/
There were many ways around it.
Because Vault didn't write a new software package f
On Tue, 2 Nov 2021, dwight via cctalk wrote:
The trickiest protection I've seen is where there is a hole punched
through the disk on one track. The idea is that the protected program
writes to that track and expects to see a failure to read that track.
It doesn'tneed to be a hole all the way thr
On Sun, 31 Oct 2021, Charles via cctalk wrote:
Please excuse the hijack:
I have two Silent 700's, I think the 745 models with acoustic coupler and
110/300 baud rocker switch. One I have fixed and it works great (well, at
least as far as that silvery thermal printout goes).
I've seen ELECTRO
On Sun, 31 Oct 2021, geneb via cctalk wrote:
I've got the maintenance guide, so I'll look to see what is there when I
get a chance, thanks.
I didn't see anything in the manual about how to handle the two index
sensors, or to deactivate one of them.
In normal use, it should be transparent to
One of my first products to market, the "Berkeley Microcomputer
FlipJig", was a plexiglass "pocket" with holes, for marking diskettes
for punching the extra holes.
The "deluxe" model had a stub spindle on the outside and a ring, for
putting on hub reinforcers.
On Sun, 31 Oct 2021, Ali wrote:
On Sun, 31 Oct 2021, Chuck Guzis via cctalk wrote:
Gene, are you certain that these aren't "flippy disks" (two index
apertures)?
And, if you punch a THIRD hole, then the disk could be used DS, OR Flippy!
One of my first products to market, the "Berkeley Microcomputer FlipJig",
was a plexigla
Put a piece of opaque tape over one of the holes.
Make sure that it is solidly attached.
I used to use write protect tabs.
But aged write protect tabs rarely still stick well.
And, it is a hassle to dig out ones that have fallen off inside the drive.
I ran most of my 8" drives without cases, so i
Miser at miser.net? Still sounds pretty grumpy, though...
On Mon, 11 Oct 2021, a "Fred" via cctalk wrote:
Nah, not grumpy. Just cheap and/or frugal. ;)
I also do not claim to the be the other (Grumpy) Fred.
Nobody wants to be confused with me.
I did EAM and FORTRAN in the 1960s,
Got out of a
That is a DIFFERENT "Fred"
--
Grumpy Ol' Fred ci...@xenosoft.com
On Wed, 6 Oct 2021, Fred via cctalk wrote:
Date: Sat, 2 Oct 2021 19:54:02 -0700
From: "Ali"
Procomm was the first terminal program I used that was easy to
understand and work with. Of course I was using it m
On Tue, 28 Sep 2021, John Herron via cctalk wrote:
For those of you who wrote your own editors. How did you display special
ASCII characters? Years ago, In highschool I tried writing a hex editor (in
qbasic so this may have been the problem) but when display anything that
had a function like chr
"I've been using vi for about two years, mostly because I can't
figure out how to exit it."
:q
you're welcome
Or having to power cycle the machine to get out of EMACS.
On Tue, 28 Sep 2021, Mike Katz via cctalk wrote:
To Exit EMACS:?? Control-X Control-C
I once saw a car with a vanity pl
On Tue, 28 Sep 2021, Mike Katz via cctalk wrote:
Editors are like religion once you have a favorite you defend it like crazy.
"Baby Duck Syndrome": you bond to the first one. Any time you are tempted
to switch, everything that any other one does differently is "just all
wrong". If you are e
My girlfriend commented to me that Americans don't understand London"s
Fleet Street scene of the 70's and early 80s and how Sinclair products
were represented there. In the US the "Timex Sinclair TS-1000" was a
budget $99 computer for sale in Hallmark gift stores and its marketing
represented
On Sun, 19 Sep 2021, Murray McCullough via cctalk wrote:
Clive SInclair was a British entrepreneur who designed and built very small
computers back in the early days of 8-bit computing. Whether he created a
'first' as Fred argues doesn't lessen his role in microcomputing history.
Let's celebrate
On Sat, 18 Sep 2021, dwight via cctalk wrote:
Of course, Busicom was the first programed microprocessor driven
calculator, it wasn't the first calculator using calculator ICs. That is
what Busicom was trying to compete with, when going to Intel in the
first place.
I think that the Sinclair us
Clive Sinclair died at 81 after a long illness (probably not Covid)
'course now he is touted as being "the inventor of the pocket calculator"
(as with all "FIRST"s, it leaves out a few predecessors,such as Busicom
(1971, whose contract with Intel led to the 4004), Kilby's 1967 "Cal Tech"
at TI,
Clive Sinclair died at 81 after a long illness (probably not Covid)
'course now he is touted as being "the inventor of the pocket calculator"
(as with all "FIRST"s, it leaves out a few predecessors,such as Busicom
(1971, whose contract with Intel led to the 4004), Kilby's 1967 "Cal Tech"
at TI
https://www.elliottelectronicsupply.com/connectors/card-edge/male-card-edge-idc-connector-34-position-kel-am-idc34m.html
On Fri, 27 Aug 2021, Doug Jackson wrote:
We can synthesise those with a Female edge connector and a nice Gold Plated
set of long fingers.
I agree - those connectors were beau
On 8/25/21 2:29 AM, Eric Smith via cctalk wrote:
When I worked at Apparat around 1981, we used a lot of *male* IDC edge card
connectors. I've almost never seen any since, and I couldn't remember the
name of the vendor. I just found out that it was Kel-Am, but the internet
knows almost nothing abo
For 100tpi, there also existed Tandon TM100-4M drives. The M stood for
"Micropolis". One of the TM100-4M drives that I had did not have the
'M' on the label.
On Wed, 25 Aug 2021, Chuck Guzis via cctalk wrote:
The early Micropolis 48 tpi drives (1015 Mod I) were spec-ed at 35 tracks.
That's
That is not how C defines bytes or ints, fyi.
On Wed, 25 Aug 2021, ben via cctalk wrote:
I suspect the standard says a byte is at least 7 bits.
Thus 8 bit data is NOT PORTABLE.
I don't know from "the standard", but, K&R said that
an "int" could be whatever size was most convenient for the pro
On Wed, 25 Aug 2021, Jay Jaeger via cctalk wrote:
I don't have that code, however a couple of points:
First of all, I think Vector Graphic actually used Micropolis drives (and I
suspect yours are because of the hard sectoring). I have Micropolis drives
on my Altair. Back in 2006 I imaged my f
The 96tpi ones are 800K, and should be treated like any other "Quad
Density" CP/M disk.
On Tue, 24 Aug 2021, geneb via cctech wrote:
Just for my own curiosity, can a "typical" high-density 5.25" drive correctly
image a 96tpi disk?
USUALLY.
Either the drive needs to be able to switch to 300 RP
On Tue, 24 Aug 2021, Bill Degnan wrote:
Fred,
Just for the purpose of imaging the disks, is there any reason I cant treat
these disks like any other 5 1/4" cpm 360k disk?
Bill
Treat them just like any other 5.25" MFM CP/M disk.
IIRC, the 48TPI ones are 400K, with 512 bytes per sector, 10 sector
The answer to the question is Hydra I believe.
On Sun, 22 Aug 2021, Liam Proven via cctalk wrote:
But since you are not replying to anything, we don't know what the
question _was_ ...
If "drugs, sex, and rock'n'roll" is not the answer,
then you are asking the wrong question.
On Fri, 20 Aug 2021, Bill Degnan via cctech wrote:
Is there a simh for the otrona attache? I have some.disk images created
with Dunfield's utility..if not I will try to read them by using the Zorba
portable, which is pretty good with varied formats.
Bill
Otrona is fairly straightforward for fo
On Fri, 13 Aug 2021, Murray McCullough via cctalk wrote:
30 years ago this month the IBM PC debuted at $1565. Some say this began
the era of mass-computing and it is now what classiccmp.org
is all about! For those interested in the OS world
LINUX is 30 years old. Time has passed but this is what
Some might argue with you about that. PL/M was done in Fortran IV.
A REAL programmer can write a FORTRAN program in any language.
A REAL programmer can write any program in FORTRAN. (although, it is
often the wrong tool for the job, possibly resulting in too much work and
poorer performance.)
On Mon, 2 Aug 2021, Bill Gunshannon via cctalk wrote:
Some might argue with you about that. PL/M was done in Fortran IV.
A REAL programmer can write a FORTRAN program in any language.
A REAL programmer can write any program in FORTRAN. (although, it is
often the wrong tool for the job, poss
On Sun, 1 Aug 2021, Chuck Guzis via cctalk wrote:
Would the 68K have succeeded if it were not for Apple and Commodore?
Without your engineering expertise, I would still say, "YES".
(I was reading Infoworld, etc., as compared to you designing the machines)
Before we heard anything about Apple
pessimist who would have called it
'Half Empty ST'...
On Fri, Jul 30, 2021 at 9:17 PM Fred Cisin via cctalk
wrote:
Yep.
And, it was not appreciated when I suggested an interim release between
the MT/ST emulator and "Full-ST" to be called "Half Full ST"
On Fri, 3
Yep.
And, it was not appreciated when I suggested an interim release between
the MT/ST emulator and "Full-ST" to be called "Half Full ST"
On Fri, 30 Jul 2021, grif...@mindspring.com wrote:
Scope Creep.. no telling how many projects died in stalled development.
On Jul
On Fri, 30 Jul 2021, Chuck Guzis via cctalk wrote:
Not really--it's very old technology, (1964), of limited capacity (about
20 KB per tape), was a hideously expensive way to buy a typewriter
(about USD$7000 in 1964, or about USD$61,000 today), used almost
exclusively in large corporate offices to
On Fri, 30 Jul 2021, Mike Stein via cctalk wrote:
There's a small discussion on S100computers about the terms 'skew' and
'interleave'.
In CP/M documentation 'skew' refers to what's usually called interleave
these days, i.e. offsetting sectors on a track to compensate for the fact
that by the time
On Thu, 29 Jul 2021, Mark Huffstutter wrote:
It sure is, Fred! I bought My tickets, and now it looks likely I won't be able
to attend
It's coming right up.
https://vcfed.org/wp/festivals/vintage-computer-festival-west/
GREAT!
That says:
Saturday, August 7 (2021) 10:00 - 6:00
Sunday, A
I heard a rumor that VCF is going to happen again!
But, I have seen NO MENTION of that on this mailing list.
Is it happening?
Will everybody be there?
It is now relatively short notice, and between that, not having a station
wagon or van, and health issues, I won't be able to pack up and bri
I would have borrowed a 2nd floppy drive from another system, done the
copy, and returned the floppy drive. It would probably have been faster.
On Mon, 26 Jul 2021, Liam Proven via cctalk wrote:
You know, that's an excellent idea and I wish I'd thought of it then.
My desktop was an IBM PC-AT a
On Mon, 26 Jul 2021, Peter Corlett via cctalk wrote:
HD disks can hold "up to" 2MB (12,500 bytes per track, times two sides, times 80
tracks), as printed on some of the more misleadingly-labelled brands. However,
splitting that into sectors and adding guard bands reduces the usable space.
Similar
From: cctalk on behalf of Fred Cisin via cctalk
Sent: Saturday, July 24, 2021 3:27 PM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Distribution floppies (Was: Microsoft OSs (was: Install Floppies)
On Sat, Jul 24, 2021, 10:41 AM Grant Taylor via cctalk <
My recollection of the DMF Microsoft period was that if you purchased a
retail MS product using the DMF format and couldn't get it read on your
system, a call to MS would result in a standard format copy being shipped.
On Sun, 25 Jul 2021, Grant Taylor via cctalk wrote:
It's my understanding th
IBM XDF has multiple sizes of sectors on each track!
Similarly, the Ensonic Mirage got 880K on a "720K" disk by using five 1024
byte sectors plus a 512 byte one.
The WD 179x type FDC can mix sector sizes, since formatting with it is an
almost RAW write of a track.
It is, of course, "impossib
On Sat, Jul 24, 2021, 10:41 AM Grant Taylor via cctalk <
cctalk@classiccmp.org> wrote:
Maybe someone who is more versed in the possible disk sizes and more
accurate (non-rounded) count. I'm extremely foggy when it comes to
5-1/4 inch disk capacities. 720 kB and 1.44 MB disks I can deal with.
Bu
Some further questions BELOW to complete the distribution media database:
}:-)
1) Which ones were available on 5.25"??? (and how many disks?)
A) "360K"?
B) "1.2M"?
C) "1.4M"?
D) Microsoft non-standard crammed 3.5" HD? (1.7M?)
On Fri, 23 Jul 2021, Grant Ta
Some further questions BELOW to complete the distribution media database:
If memory serves, that mass of floppies was dwarfed by Windows 95,
particularly later versions.
On Fri, 23 Jul 2021, Liam Proven via cctalk wrote:
Win95: 13 disks.
Win98: 38 disks.
Netware 3.1: can't remember... lots:
Is Fortran the newer version of FORTRAN ( I II IV )?
On Mon, 21 Jun 2021, Chuck Guzis via cctalk wrote:
My recollection from X3J3 is that "Fortran" was officially endorsed with
F90. F77 still has FORTRAN officially.
After "FORTRAN 77", but before "Fortran 90", "Fortran 8X"
(DOD extensions st
On Sun, 20 Jun 2021, Bill Degnan via cctech wrote:
Paul,
I have been compiling a library of such. Ioks here, if you are traveling
north swing by to review the books on hand. The one that comes to mind is
Thinking Machunrs by Berkeley but here on the patio at my parents house I
dont know the date
On Sat, 12 Jun 2021, Tony Duell via cctalk wrote:
In both cases it would require an input pin to become an output,
something that I can't see how it would happen.
I wonder if in the original list, a '1' was misread as a '7' or vice
versa. I am told that in some countries the '7' is conventionall
On Sun, 30 May 2021, dwight via cctalk wrote:
I had a Brother daisy wheel that would do a single step of the stepper
and a second strike, for bold. You need to have the right esc sequence.
Just about every printer is different until HP had a standard( pscl5 as
I recall ).
Prior to the HP PCL
Some characters that might not otherwise be available could be done with
over-strike, such as an accent mark (When you apply for a job, do you send
a RESUME?") or the tilde over N (There is an exit off of 280 that is
incorrectly labelled "LA CANADA road") The en~e character is recognized
as a
On Thu, 27 May 2021, Chuck Guzis via cctalk wrote:
I'd been cutting floppy controller code since about 1975; the weirdness
of the IBM PC design really made for some head-scratching.
I did some FORTRAN since 1967, but until the TRS80, I couldn't own a
computer, and hardly ever got a chance to t
On Thu, 27 May 2021, Chuck Guzis via cctalk wrote:
Viruses? On CP/M-80 disks? When Don and I were exchanging samples, I
was unaware of such stuff.
Someone want to enlighten me on Z80/8080 viruses on CP/M floppies?
(FWIW, I do differentiate "virus" from "malware")
There were also some MS-DOS d
On Wed, 26 May 2021, Marvin Johnston via cctalk wrote:
Depending on when you need them, VCFMW is coming up in a few months. I have a
number of Osborne 1's as well as a couple of 386 machines set up with
Teledisk (I bought it *years* ago when it became available to listmembers),
imagedisk, and *
Osborne Nuevo/Vixen/4
so it is rather painless.
Best regards
Tom Hunter
On Wed, May 26, 2021 at 12:38 AM Fred Cisin via cctalk <
cctalk@classiccmp.org> wrote:
Imagedisk is great for making images.
BUT, the original request is not for images, it is for the previous
owned wanting access t
On Tue, 25 May 2021, Peter Coghlan via cctalk wrote:
Early on, floppy disks on the BBC Micro were 5.25in FM with 10 sectors
per track and 256 bytes per sector. However, BBC Micros are probably not
common where you are and some programming in 6502 assembly or BBC Basic
and a knowledge of the Osbo
On Tue, 25 May 2021, Jules Richardson via cctalk wrote:
I think there were some bootable Osborne floppies which still retained a
single density boot track even when the rest of the media was formatted as
double density. Regular data disks are probably consistent throughout, but
it's just someth
On Tue, 25 May 2021, Zane Healy wrote:
Yes, we need to be able to access the files.
I’m going to see if my old 486 will still boot up, I know I used to use it with
imaging RX50 floppies. I’m not an x86 collector, so have a pretty limited
selection of PC Hardware. I’m on my Sabbatical right
fine on most older PCs with
a decent floppy controller.
As Chuck G writes "TestFDC" will tell you if the floppy controller is
usable for imaging.
Best regards
Tom Hunter
On Tue, May 25, 2021 at 2:26 AM Fred Cisin via cctalk
wrote:
There were two Osborne floppy formats. Both CP/M.
IIR
There were two Osborne floppy formats. Both CP/M.
IIRC, the original format was "Single Density" (FM), 10 sectors per track,
with 256 bytes per sector (similar to the TRS80-Model-1. That will
require FM/SD capability. Most NEC FDCs did not support that. Dave
Dunfield has a test program tha
Most who are familiar with Intertec SuperBrain will already know, but for
those who are unfamiliar:
They had three disk formats:
All of which can be done by reformatting IBM "360K" diskettes"
Single sided "Double Density" (MFM) 200K 48TPI 40 track. ISTR 10 512 byte
sectors per track, the data
On Tue, 11 May 2021, Al Kossow via cctalk wrote:
https://www.hagensieker.com/wordpress/2018/06/18/deoxit-what-is-it-what-isnt-it/
and Ben synthesizes some corrosion inhibitor
https://www.youtube.com/watch?v=VpRrP3sqQLw
OK, so chemically, it's mostly lighter fluid, which does work well for
such
On Mon, 10 May 2021, Adrian Graham via cctalk wrote:
Just me that reaches for a 2mm drill then? I realise people may react in
horror at this, but your chances of getting swarf in the PSU are slim to
negative. Oh and while you’re in there, please remove the 0.47uF RIFA
before it explodes, assumi
Hmmm. If they ever use single phase, instead of 3 phase, . . .
A4 (A above middle C) is nominally 440Hz, but not everybody agrees.
NY Phil uses 442, Boston uses 441, and many argue for 432.
But, 400 would be A-flat. With a constant A flat droning in the
background, . . .
Supply and demand. As the number of units remaining drops, the price goes
up. This, for example, is clearly his last piece of "blanc" paper:
https://www.ebay.co.uk/itm/Blanc-sheet-of-paper-04/254895244594 (or maybe
it's French paper ...) :-)
The ordinary paper that consumers use throughout the
Q: what does "FURBISH" mean?
On Fri, 26 Mar 2021, Guy N. via cctalk wrote:
According to the OED: 1) Remove the rust from, burnish, polish up (a
sword, armour, etc.); 2) Clean up, renovate, revive, give a new look to
(something dirty, faded, or old).
I think "give a new look to" is what some of
For HDDs, "refurbished" probably means FORMAT'ed.
In the old days, it sometimes meant a LOW-level format.
SSTOR ("Speed-Store") and SPINRITE (Gibson's) "REFURBISHED" drives.
For other things, it probably means plug it in and see if the power
indicator comes on.
Maybe even wipe it off with a da
On Fri, 19 Mar 2021, Bill Degnan via cctalk wrote:
What about giant squid? You dont think it can happen to you and then...
There will always be SOMETHING.
I read on the interwebs that Lee Harvey Oswald was hired by JFK to
distract the press to avoid coverage of the Staten Island Ferry giant
On Sat, 13 Mar 2021, Stan Sieler via cctalk wrote:
Hi,
I think I've finally decided: yes. :)
It looks like Fred C. might have one, so I will wait to hear from him.
thanks!
Stan
BAD NEWS.
Like the YEAR 2020, mostly failure.
The box of printers was not where I thought that it might be.
I'll loo
In contrast, Apple chose to abandon compatability with all previously
existing software
On Sun, 14 Mar 2021, Al Kossow via cctalk wrote:
When they stopped selling Apple II's when Lisa was released.
Yes, exactly.
I was referring to the switch to 68000 (Lisa and then Mac), rather than
trying t
On Sun, 14 Mar 2021, Guy Sotomayor via cctalk wrote:
There were many heated discussions in various task forces (this was of course
IBM) about the next generation OS (to become OS/2) about the '286.?? First
and foremost was how to be able to run DOS programs on the '286. Over very
vocal oppositi
On 3/13/2021 1:49 PM, Chuck Guzis via cctalk wrote:
I'm sure that Fred could tell you about doing serious research.
On Sat, 13 Mar 2021, ben via cctalk wrote:
I suspect that means spending money, or travelling around.
Well, I don't know from "SERIOUS".
and, I don't spend money, and hardly nev
e,
the inkjet project was stuck and Barney Oliver sent him to it as his
trouble shooter. (It was stuck because the non-replaceable printhead kept
getting ink clogs.)
(As related to me by Carson, about 2005.)
thanks,
Stan
On Fri, Mar 12, 2021 at 6:58 PM Fred Cisin wrote:
Does that mean that yo
Does that mean that you WANT one? (or more)
There were several slightly varying models.
There was a detachable paper feed bracket, that is rarely with it.
Do you want some OLD cartridges (to clean out and try to refill?)
--
Grumpy Ol' Fred ci...@xenosoft.com
On Fri, 12 Mar 2021
On Mon, 8 Mar 2021, John Foust via cctalk wrote:
I'm familiar with the various undelete tools for Windows and Linux.
Such tools may not exist or make sense for older file systems.
Windows/MS-DOS was certainly not unique nor original in marking file
primary directory entries (FPDE) as deleted,
A stupid idea:
Could the test require, and be failing, access to memory above 1M?
On Sat, 6 Mar 2021, Rob Jarratt via cctalk wrote:
I have a DECstation 220 (Olivetti M250E) which is failing POST on a "simple
test of the 80286 protected mode". It says in a service manual I have that
for this te
Three obvious possibilites for tools to help:
1) A program that makes a single large file out of all unallocated blocks,
for later study and breaak-up in an editor.
2) A prograam that makes a separate file out of each unallocated block,
for later study and appending in an editor.
3) An INTER
I noticed someone named Richard Thompson just donated. If you are that
person, used to live in the Jemez mountains and hacked on Rainbow stuff
back in the day, please contact me...
On Sat, 27 Feb 2021, Mark Linimon via cctalk wrote:
Or, if you are the Richard Thompson, guitar virtuoso, I will
https://www.seattletimes.com/business/funky-electronics-chain-frys-is-no-more/
They could probably have hung on a little longer, by stocking those empty
shelves with toilet paper, and maybe even some groceries.
It has been many years since I was in a Fry's, because there weren't any
very cl
Thanks for the brochure.
That looks like a fascinating project!
Computerworld mentioned it occasionally in 1980.
I love that "Pl/1 will soon emerge as the dominant language of
microcomputers"
If you haven't already exhausted such leads (apologies if you already
have), some trivial GOOGLE'in
On Mon, 15 Feb 2021, Mattis Lind via cctalk wrote:
My guess is that the data that follows the sector ID is some kind of
checksum.
yes. well, sorta. 16 bit CRC
A typical IBM/WD style format has:
a gap
Index Address Mark
a gap (note that WD can use a shorter post index gap than NEC can)
an
601 - 700 of 2305 matches
Mail list logo
