http://www.retrotechnology.com/herbs_stuff/drive.html
is more detailed than the
On 8/10/17 1:32 PM, Tom Gardner via cctalk wrote:
> Me too - great rant.
Hmmm. Sounds like I should get the original drives from the VCF warehouse at
Infoage.
Thanks Chuck.
Rich
Sent from Verizon/AOL Mobile Mail
On Saturday, August 12, 2017, Chuck Guzis via cctalk
wrote:
On 08/12/2017 05:30 PM, Richard Cini via cctalk wrote:
> OK, so
On 08/12/2017 05:30 PM, Richard Cini via cctalk wrote:
> OK, so this is interesting. Since the CW was working using the test
> previously described,
>
> I tried imaging the non-critical disks. None would read successfully. So, I
> moved
>
> everything to the other machine with the better
On 8/12/17, 4:31 PM, "cctalk on behalf of Fred Cisin via cctalk"
wrote:
On Sat, 12 Aug 2017, Richard Cini via cctalk wrote:
>> I have four “non critical” disks from this system – says
>> “Utilities”,
On Sat, 12 Aug 2017, Richard Cini via cctalk wrote:
The Catweasel MK1 and the QT242 combination seems to work well. I took
the 8” MSDOS disk I created this morning, made an image of it, wrote
it back to a blank disk and it booted. Running Norton Disk Doctor on it
resulted in no reported
…continuing…
The Catweasel MK1 and the QT242 combination seems to work well. I took the 8”
MSDOS disk I created this morning, made an image of it, wrote it back to a
blank disk and it booted. Running Norton Disk Doctor on it resulted in no
reported errors.
I have four “non critical” disks
I spent a bit of time on this yesterday. I have four QT242s (all were NOS but
two had broken plastic disk guides). It turns out that the only drive that
works is one of the ones with broken plastic. So, I did a little swapping,
connected it to my PC/AT and I now have MS-DOS 6.22 on an 8”
So based on this entire thread I should probably hunt down some Shugart 850s to
be safe.
Rich
Sent from Verizon/AOL Mobile Mail
On Friday, August 11, 2017, Christian Corti via cctalk
wrote:
On Thu, 10 Aug 2017, camiel.vanderhoeven--- via cctalk wrote:
> My workhorse
On Thu, 10 Aug 2017, camiel.vanderhoeven--- via cctalk wrote:
My workhorse 8" drives are some Ye-Data half-height ones. I still have about
a dozen of them as NOS. I believe they were made in 1993.
If you mean the Y-E DATA YD-180, well, they are QumeTrack 242 ;-)
Christian
Me too - great rant.
Thanks
Tom
-Original Message-
From: Mark J. Blair [mailto:n...@nf6x.net]
Sent: Thursday, August 10, 2017 9:56 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: The Name of the disk (Was: Disk imaging with IMD - question
> On Aug 9, 2017, at 12
Quoting Al Kossow via cctalk :
On 8/10/17 9:25 AM, camiel.vanderhoeven--- via cctalk wrote:
My workhorse 8" drives are some Ye-Data half-height ones. I still
have about a dozen of them as NOS.
Glad they work out for you. Fairlight people like them, so I've been
> On Aug 9, 2017, at 12:08, Fred Cisin via cctalk
> wrote:>
>
[...]
>
>I'm keeping your rant as reference >material. Thanks!
I second that! Fred ranting is a good thing ;). Generally there are a number of
good posts here that go into my archive folder for future
www.vcfed.org/forum/showthread.php?55277-Selecting-an-8-quot-floppy-drive
for someone else's opinion of the Qume PsOS
On 8/10/17 9:57 AM, Al Kossow via cctalk wrote:
>
>
> On 8/10/17 9:25 AM, camiel.vanderhoeven--- via cctalk wrote:
>
>> My workhorse 8" drives are some Ye-Data half-height
On 8/10/17 9:25 AM, camiel.vanderhoeven--- via cctalk wrote:
> My workhorse 8" drives are some Ye-Data half-height ones. I still have about
> a dozen of them as NOS.
Glad they work out for you. Fairlight people like them, so I've been giving
them away to them.
I wont' try to recover anything
> On Aug 9, 2017, at 12:08, Fred Cisin via cctalk wrote:
>
>
[...]
>
I'm keeping your rant as reference material. Thanks!
The Tandy Portable Disk Drive (TPDD) for the Model 100 series is one of the
odd-ball "rare" configurations: 3.5", 40 track (later, 80 track on
Quoting Chuck Guzis via cctalk :
On 08/10/2017 01:29 AM, Christian Corti via cctalk wrote:
That really depends on the drive. Ok, I think the Qume is "smart"
enough to inhibit any write to side 1 on a SS media. But OTOH, many
other drives are just happy doing anything
On 08/10/2017 01:29 AM, Christian Corti via cctalk wrote:
> That really depends on the drive. Ok, I think the Qume is "smart"
> enough to inhibit any write to side 1 on a SS media. But OTOH, many
> other drives are just happy doing anything that you request (e.g. the
> BASF drives I also use).
On 8/10/17 1:29 AM, Christian Corti via cctalk wrote:
> On Wed, 9 Aug 2017, Chuck Guzis wrote:
>> I'll try again--it doesn't matter if the Qume 242 (I've got one)
I have a pretty strong dislike for the Qume drives, the 242 in particular
seems to like to eat the top side of media.
The design of
On Wed, 9 Aug 2017, Richard Cini wrote:
Will do. These 242 drives are NOS and I have several. I'll swap them too.
One more note about QumeTrack 242 drives:
I have the problem that the head load is very sticky (on both of my
drives). I had to clean and oil it to make it working again. But
On Wed, 9 Aug 2017, Chuck Guzis wrote:
I'll try again--it doesn't matter if the Qume 242 (I've got one) is a
DSDD drive if you're using SS media. Peek inside the drive and you'll
see that there are *two* index sensors--one for single-sided and the
other for double-sided media. Unless you've
@classiccmp.org>
wrote:
- Original Message -
From: "Richard Cini via cctech" <cct...@classiccmp.org>
To: "Discussion: On-Topic Posts Only" <cct...@classiccmp.org>
Sent: Tuesday, August 08, 2017 8:54 PM
Subject: Disk imaging with IMD - quest
On 08/09/2017 03:06 PM, Fred Cisin via cctalk wrote:
> Yes.
> It is not clear whether the issue is with the disks, or with the
> hardware setup.
Again, maybe I'm reading too much into the comments, but I thought that
Rich had formatted a floppy using IMD and verified using the Analyze
function.
Will do. These 242 drives are NOS and I have several. I'll swap them too.
Lots to do this weekend!
Rich
Sent from Verizon/AOL Mobile Mail
On Wednesday, August 9, 2017, Chuck Guzis via cctalk
wrote:
There's also the possibility that the drive alignment is so far out
I think I have a Cromemco 16FDC laying around. Might be able to put a quick
S100 Z80 system together.
Rich
Sent from Verizon/AOL Mobile Mail
On Wednesday, August 9, 2017, Fred Cisin wrote:
On Wed, 9 Aug 2017, rich.c...@verizon.net wrote:
> Hmmm. I might have. CW in my
On Wed, 9 Aug 2017, Chuck Guzis via cctalk wrote:
There's also the possibility that the drive alignment is so far out of
whack that you're not seeing the data on the SCP disks. This is
unlikely in drives that haven't been diddled with, but unless you bought
the drive NOS, you don't know that.
There's also the possibility that the drive alignment is so far out of
whack that you're not seeing the data on the SCP disks. This is
unlikely in drives that haven't been diddled with, but unless you bought
the drive NOS, you don't know that.
Grab a known-good 8" floppy--the format doesn't
On Wed, 9 Aug 2017, rich.c...@verizon.net wrote:
Hmmm. I might have. CW in my storage area. Good idea. I don't know the
version of if I have the software. Let me look later. Great idea.
alternatively, do you have ANY computer with 8" drive and WD 179x
controller?
It's not too big a deal to
On 08/09/2017 01:47 PM, Fred Cisin via cctalk wrote:
> That is SO compatible with the NEC 765 chips that I'm going to CALL it
> an NEC chip.
> I wonder if has the same "flash-blind" behavior following index?
> I'll go out on a limb saying that I think that it will NOT give you any
> chaange from
Hmmm. I might have. CW in my storage area. Good idea. I don't know the version
of if I have the software. Let me look later. Great idea.
Rich
Sent from Verizon/AOL Mobile Mail
On Wednesday, August 9, 2017, Fred Cisin wrote:
On Wed, 9 Aug 2017, Mike Stein via cctalk
On Wed, 9 Aug 2017, Mike Stein via cctalk wrote:
Interesting reading here under disk formats:
https://en.wikipedia.org/wiki/86-DOS
Sounds like there were two Tarbell controllers, single and double
density but both single-sided ?
NO
https://en.wikipedia.org/wiki/86-DOS#Disk_formats
includes a
On 08/09/2017 01:29 PM, Richard Cini via cctalk wrote:
> I don't have the screen print handy but if you look on Dave Dunfield's site
> under Disk/Software he has a controller registry. I'm using the Adaptec
> AHA-1522A which uses the National DP8437AV chip.
That should work with most common
On Wed, 9 Aug 2017, Richard Cini via cctalk wrote:
Thanks Fred. The Adaptec controller I'm using has a NatSemi controller
and passes all IMD tests. I have an SBC floating around with a WD37xx
chip so maybe I'll try that this weekend.
That is SO compatible with the NEC 765 chips that I'm going
I don't have the screen print handy but if you look on Dave Dunfield's site
under Disk/Software he has a controller registry. I'm using the Adaptec
AHA-1522A which uses the National DP8437AV chip.
Rich
Sent from Verizon/AOL Mobile Mail
On Wednesday, August 9, 2017, Chuck Guzis via cctalk
Thanks Fred. The Adaptec controller I'm using has a NatSemi controller and
passes all IMD tests. I have an SBC floating around with a WD37xx chip so maybe
I'll try that this weekend.
Rich
Sent from Verizon/AOL Mobile Mail
On Wednesday, August 9, 2017, Fred Cisin via cctalk
essage -
From: "Richard Cini via cctalk" <cctalk@classiccmp.org>
To: <cctalk@classiccmp.org>
Sent: Wednesday, August 09, 2017 2:52 PM
Subject: Re: Disk imaging with IMD - question
> Thanks Chuck. The Gazelle uses the Tarbell DD controller which uses a 1793
> which I b
On 08/09/2017 12:41 PM, Fred Cisin via cctalk wrote:
> My naming convention is flawed. I think that at one point Western
> Digital made an "NEC compatible" controller, that isn't what I call
> "wd-style"
Yup, the WD37C65. Anyone need any? I've got a tubeful that I'm never
going to use. Used
On Wed, 9 Aug 2017, Mike Stein via cctalk wrote:
Interesting reading here under disk formats:
https://en.wikipedia.org/wiki/86-DOS
Sounds like there were two Tarbell controllers, single and double
density but both single-sided ?
Also sounds like the FAT12 disk formats were not quite MS-DOS
If you can use IMD to format both FM and MFM at 500Kbps on your 242--and
"Analyze" reads the format okay, your SCP disks aren't probably standard
IBM 3740 or System/3 type diskettes. They could be in a proprietary
recording format, such as Intel MMFM or Futuredata GCR.
On Wed, 9 Aug 2017,
: "Richard Cini via cctalk" <cctalk@classiccmp.org>
To: <cctalk@classiccmp.org>
Sent: Wednesday, August 09, 2017 2:52 PM
Subject: Re: Disk imaging with IMD - question
> Thanks Chuck. The Gazelle uses the Tarbell DD controller which uses a 1793
> which I believe
The structure used on most diskette tracks is based on an IBM design
(3740, etc.), and was referred to as "IBM format". BUT, the general
public think that "IBM" means the machines that followed the 5150, so "IBM
format" is oft misconstrued to mean PC. To avoid ambiguity, I sometimes
call
Thanks Chuck. The Gazelle uses the Tarbell DD controller which uses a 1793
which I believe is 3742 and s/34 compatible.
Rich
Sent from Verizon/AOL Mobile Mail
On Wednesday, August 9, 2017, Chuck Guzis via cctalk
wrote:
On 08/09/2017 10:57 AM, Richard Cini via cctalk
On 08/09/2017 10:57 AM, Richard Cini via cctalk wrote:
> "DON'T ASSUME..." AS THEY SAY ON TV. I'M OK WITH THE ADDITIONAL CLARITY.
> SINCE YOU HAVE A WORKING 242, WOULD YOU MIND CONFIRMING THE JUMPER SETTINGS
> FOR ME? JUST TRYING TO ELIMINATE AS MANY POTENTIAL ERROR POINTS.
I had a look and a
See below. Hopefully inline works. I'm not shouting, just using caps.
Rich
Sent from Verizon/AOL Mobile Mail
On Wednesday, August 9, 2017, Chuck Guzis via cctalk
wrote:
On 08/09/2017 09:52 AM, Richard Cini via cctalk wrote:
> It's funny -- I didn't see the original
On 08/09/2017 09:52 AM, Richard Cini via cctalk wrote:
> It's funny -- I didn't see the original reply from Bill to this
> message.
>
> I am aware of the track differences and I thought Dos would format
> it but just slam the head for the last three tracks. No such luck. It
> actually complains
Bill -- the drive and disks are double-sided double density. Are you saying
that's quad density?
I may try a different host setup again. I have five different computers that
passed the testfdc program with varying levels of success, although none with
single-density.
Rich
Sent from
NOTE - I was able to make a bootable 8" DOS 6.22 disk even though it
slammed the last three tracks, on my imaging computer. The computer
thought it was writing to a 1.2M 5 1/4 disk.
BUT you're saying a quad density SS disk. I never tried that and if you
say it does not work then I can't dispute
It's funny -- I didn't see the original reply from Bill to this message.
I am aware of the track differences and I thought Dos would format it but just
slam the head for the last three tracks. No such luck. It actually complains
about the disk from the beginning.
The Qume 242 is a DSDD
On 08/09/2017 01:41 AM, william degnan wrote:
> How about booting into dos and just formatting a disk that way?
Go back and read what I wrote, Bill. If single-sided media is being
used, DOS formatting will fail as there is no single-sided high-density
format available.
Of course, if
On Aug 9, 2017 1:34 AM, "Chuck Guzis via cctalk"
wrote:
>
> Quick question, Rich--what kind of media are you using to test by
> formatting to 1.2MB?
>
> If they're SS media (as indicated by the position of the index
> aperture), your drive will probably barf if you try to
Guys –
I’m working on a restoration project for VCF that requires
imaging 8” disks (both SSSD and DSDD, mostly for the Tarbell controller) but
I’m having trouble with it reading disks. So, I wanted to run through what I’ve
done and see if I’m missing anything.
It took
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