Re: Bad heads on RL02: Worth replacing

2019-12-16 Thread Chris Zach via cctalk
On a funny side note, I have a -30 rating on Imgur now since a few of 
the posts of these drive heads were posted with names like "dirty 
bottom" and "clean top".


Ooops. Looks like drive heads are not a proper kink...

On 12/16/2019 10:57 PM, Chris Zach via cctalk wrote:
Well, I did check the head pretty thoroughly before installing it: One 
problem was there were dirt particles that were not coming off so I used 
the tip of a tweezer to loosen them up. Note I do this to watch dial 
faces from the 1870's (oddly enough also porcelain) so I'm pretty 
careful and am not making major scratches into that ceramic head.


But I did a finger check, it's smooth.

I'm wondering if the problem is the leading edge of the head is angled 
down or something: From the debris on the leading edge it's looking like 
it is digging into the pack. Not sure if this can be adjusted, or even 
what adjusting the head would be like.


Interesting. I'll check the pack next weekend for damage before trying 
it in the good RL02 to see if it has any more errors on the disk.


C


On 12/16/2019 7:23 PM, dwight via cctalk wrote:
The head likely has something on it that you missed. Use your finger 
to feel the head. Your finger is quite sensitive to tiny roughness. Of 
course, clean your finger oil off before putting it back in. Make sure 
that first landing area is smooth and flat. Almost all of the head 
needs to have the cushion of air. With things stationary, look at how 
the head comes down on the surface. The larger part needs to be 
parallel to the surface. Most heads have a slight curve on the leading 
edge to help trap the air.

Dwight


From: cctalk  on behalf of Chris Zach 
via cctalk 

Sent: Monday, December 16, 2019 3:07 PM
To: CCTalk mailing list 
Subject: Bad heads on RL02: Worth replacing

So one of my RL02 drives (bought on Ebay years ago) is eating RL02
packs. Makes tings, then the disks have errors in my other RL02 drive.
Took a bit to figure out which drive was eating what, but I'm 100%
certain it's this newer drive.

So pulled the heads. The top one had significant gunk on it, the bottom
one a bit. Pics below.

Top: https://i.imgur.com/FELhF9X.jpg
Bottom: https://i.imgur.com/Tmsf5Nd.jpg

With alcohol and lintless swabs I managed to clean both of the heads up.

Top: https://i.imgur.com/gmACM4R.jpg
Bottom: https://i.imgur.com/SfZQV5F.jpg

Then put them back in the drive and mounted a scratch pack. With finger
on the load/run I let the drive spin up and when I heard tinging I
immediately spun down. Hopefully I didn't trash my scratch pack.

Top head has gunk, bottom one had a few flecks, but looks pretty ok.
Top: https://i.imgur.com/EAvgmuH.jpg
Bottom: (picture didn't upload)

Obviously the head is crashing, any idea why and if it's worth replacing
the head or should I put this drive out for parts? Yes I cleaned the
RL02 pack before putting it in.

Never dull.
CZ



Re: Bad heads on RL02: Worth replacing

2019-12-16 Thread Chris Zach via cctalk
Well, I did check the head pretty thoroughly before installing it: One 
problem was there were dirt particles that were not coming off so I used 
the tip of a tweezer to loosen them up. Note I do this to watch dial 
faces from the 1870's (oddly enough also porcelain) so I'm pretty 
careful and am not making major scratches into that ceramic head.


But I did a finger check, it's smooth.

I'm wondering if the problem is the leading edge of the head is angled 
down or something: From the debris on the leading edge it's looking like 
it is digging into the pack. Not sure if this can be adjusted, or even 
what adjusting the head would be like.


Interesting. I'll check the pack next weekend for damage before trying 
it in the good RL02 to see if it has any more errors on the disk.


C


On 12/16/2019 7:23 PM, dwight via cctalk wrote:

The head likely has something on it that you missed. Use your finger to feel 
the head. Your finger is quite sensitive to tiny roughness. Of course, clean 
your finger oil off before putting it back in. Make sure that first landing 
area is smooth and flat. Almost all of the head needs to have the cushion of 
air. With things stationary, look at how the head comes down on the surface. 
The larger part needs to be parallel to the surface. Most heads have a slight 
curve on the leading edge to help trap the air.
Dwight


From: cctalk  on behalf of Chris Zach via cctalk 

Sent: Monday, December 16, 2019 3:07 PM
To: CCTalk mailing list 
Subject: Bad heads on RL02: Worth replacing

So one of my RL02 drives (bought on Ebay years ago) is eating RL02
packs. Makes tings, then the disks have errors in my other RL02 drive.
Took a bit to figure out which drive was eating what, but I'm 100%
certain it's this newer drive.

So pulled the heads. The top one had significant gunk on it, the bottom
one a bit. Pics below.

Top: https://i.imgur.com/FELhF9X.jpg
Bottom: https://i.imgur.com/Tmsf5Nd.jpg

With alcohol and lintless swabs I managed to clean both of the heads up.

Top: https://i.imgur.com/gmACM4R.jpg
Bottom: https://i.imgur.com/SfZQV5F.jpg

Then put them back in the drive and mounted a scratch pack. With finger
on the load/run I let the drive spin up and when I heard tinging I
immediately spun down. Hopefully I didn't trash my scratch pack.

Top head has gunk, bottom one had a few flecks, but looks pretty ok.
Top: https://i.imgur.com/EAvgmuH.jpg
Bottom: (picture didn't upload)

Obviously the head is crashing, any idea why and if it's worth replacing
the head or should I put this drive out for parts? Yes I cleaned the
RL02 pack before putting it in.

Never dull.
CZ



Seeking information on the CSTS Timesharing service

2019-12-16 Thread jim stephens via cctalk




Does anyone have any information on Infonet, which was a timesharing 
which CSC put out?  I've got some info that it had a timesharing service 
called CSTS and would like info on that.


I've got info on the original version of the Pick system which IP was 
owned by TRW and was called GIM.  The CSTS Infonet service provided 
access in some way to IGIM, which is in a manual I just obtained.


So I want to know if there is any CSTS manuals or documents (ideally) 
anyone may have.


Secondly it looks like rather than IBM mainframes for timeshare, the 
systems that Infonet shared were Univac 1108s.  So looking for verifying 
that.


Especially if the systems were all Univac was IGIM running on the 1108.

The time frame for the manual is 1974.  GIM dates from 69 to 70 from a 
TRW contract.  Actual product was obviously running in one form in 
1974.  There is information that it ran on PDP 11s as well in another form.


While searching for information with Google, I found some court 
proceedings, including a precedent related to RICO charges on 
individuals in Infonet.  If anyone finds the original indictment, or can 
get to it on pacer, I'd appreciate a copy to read, or send message, I'll 
supply the citation.  A better source like Pacer probably will retrieve 
the original indictment.  I only find a decision which was reversed 
related to the indictment.  I suspect there would be a lot of history in 
the indictment around the 1980 ish timeframe of the indictment about how 
CSC ran Infonet.


Short story on what you will find online a lot of spots is a precedent 
set by the 4th Circuit of Appeals which resolved a technicality about 
whether individuals and corporations were the same WRT charges.  The 
ruling that RICO applied to individuals and not corporations was filed 
by a trial court.  But the appeals court said that the actions if they 
constituted RICO by individuals could be go back on the corporation they 
operated in was the precedent. Obviously not a good one for corporations.




Thanks,
Jim


Re: System/36 Kansas City

2019-12-16 Thread jim stephens via cctalk



The system was picked up by a collector, according to the person who had 
it on Saturday, 12/14.  Hope it has a good future.

thanks
Jim

On 12/13/2019 11:10 AM, Mister PDP via cctalk wrote:

Man, that its one nice system. If I didn’t already have a S/36, I would be
driving down there as we speak. Maybe one of these days I will get my hands
on a 9 track for the S/36 like the one in the images.

Oh well, good luck to whoever ends up getting the system!

On Fri, Dec 13, 2019 at 11:26 AM Dave Wade via cctalk 
wrote:


In case any one is interested..



https://www.facebook.com/groups/retrocomputers/permalink/3042809669082227/



Dave Wade

G4UGM & EA7KAE










Re: WANTED: DEC TU56 DECtape drive

2019-12-16 Thread Noel Chiappa via cctalk
> From: Thomas Moss 

> Probably a long-shot, but I'm looking for a DECtape drive for my
> PDP-8/e. 

Long shot indeed! DECtape drives are one of the rarest DEC peripheral, and
un-surprisingly, one of the most valuable. (A TU56 sold on eBait for $7K back
in 2015.)

Would a TU55 do, or does it have to be a TU56? (The interface is basically
compatible, I think, but I have yet to dig into the details, so I can't
say for certain. But I think I recall seeing systems with one or the other,
and AFAIK the controllers aren't drive-type specific - the cabling might
be, though.)

Noel


Re: Bad heads on RL02: Worth replacing

2019-12-16 Thread dwight via cctalk
The head likely has something on it that you missed. Use your finger to feel 
the head. Your finger is quite sensitive to tiny roughness. Of course, clean 
your finger oil off before putting it back in. Make sure that first landing 
area is smooth and flat. Almost all of the head needs to have the cushion of 
air. With things stationary, look at how the head comes down on the surface. 
The larger part needs to be parallel to the surface. Most heads have a slight 
curve on the leading edge to help trap the air.
Dwight


From: cctalk  on behalf of Chris Zach via cctalk 

Sent: Monday, December 16, 2019 3:07 PM
To: CCTalk mailing list 
Subject: Bad heads on RL02: Worth replacing

So one of my RL02 drives (bought on Ebay years ago) is eating RL02
packs. Makes tings, then the disks have errors in my other RL02 drive.
Took a bit to figure out which drive was eating what, but I'm 100%
certain it's this newer drive.

So pulled the heads. The top one had significant gunk on it, the bottom
one a bit. Pics below.

Top: https://i.imgur.com/FELhF9X.jpg
Bottom: https://i.imgur.com/Tmsf5Nd.jpg

With alcohol and lintless swabs I managed to clean both of the heads up.

Top: https://i.imgur.com/gmACM4R.jpg
Bottom: https://i.imgur.com/SfZQV5F.jpg

Then put them back in the drive and mounted a scratch pack. With finger
on the load/run I let the drive spin up and when I heard tinging I
immediately spun down. Hopefully I didn't trash my scratch pack.

Top head has gunk, bottom one had a few flecks, but looks pretty ok.
Top: https://i.imgur.com/EAvgmuH.jpg
Bottom: (picture didn't upload)

Obviously the head is crashing, any idea why and if it's worth replacing
the head or should I put this drive out for parts? Yes I cleaned the
RL02 pack before putting it in.

Never dull.
CZ


Re: Bad heads on RL02: Worth replacing

2019-12-16 Thread Guy Sotomayor Jr via cctalk



> On Dec 16, 2019, at 3:07 PM, Chris Zach via cctalk  
> wrote:
> 
> So one of my RL02 drives (bought on Ebay years ago) is eating RL02 packs. 
> Makes tings, then the disks have errors in my other RL02 drive. Took a bit to 
> figure out which drive was eating what, but I'm 100% certain it's this newer 
> drive.
> 
> So pulled the heads. The top one had significant gunk on it, the bottom one a 
> bit. Pics below.
> 
> Top: https://i.imgur.com/FELhF9X.jpg
> Bottom: https://i.imgur.com/Tmsf5Nd.jpg
> 
> With alcohol and lintless swabs I managed to clean both of the heads up.
> 
> Top: https://i.imgur.com/gmACM4R.jpg
> Bottom: https://i.imgur.com/SfZQV5F.jpg
> 
> Then put them back in the drive and mounted a scratch pack. With finger on 
> the load/run I let the drive spin up and when I heard tinging I immediately 
> spun down. Hopefully I didn't trash my scratch pack.
> 
> Top head has gunk, bottom one had a few flecks, but looks pretty ok.
> Top: https://i.imgur.com/EAvgmuH.jpg
> Bottom: (picture didn't upload)
> 
> Obviously the head is crashing, any idea why and if it's worth replacing the 
> head or should I put this drive out for parts? Yes I cleaned the RL02 pack 
> before putting it in.
> 
> Never dull.

I would try replacing the head(s).

TTFN - Guy



Bad heads on RL02: Worth replacing

2019-12-16 Thread Chris Zach via cctalk
So one of my RL02 drives (bought on Ebay years ago) is eating RL02 
packs. Makes tings, then the disks have errors in my other RL02 drive. 
Took a bit to figure out which drive was eating what, but I'm 100% 
certain it's this newer drive.


So pulled the heads. The top one had significant gunk on it, the bottom 
one a bit. Pics below.


Top: https://i.imgur.com/FELhF9X.jpg
Bottom: https://i.imgur.com/Tmsf5Nd.jpg

With alcohol and lintless swabs I managed to clean both of the heads up.

Top: https://i.imgur.com/gmACM4R.jpg
Bottom: https://i.imgur.com/SfZQV5F.jpg

Then put them back in the drive and mounted a scratch pack. With finger 
on the load/run I let the drive spin up and when I heard tinging I 
immediately spun down. Hopefully I didn't trash my scratch pack.


Top head has gunk, bottom one had a few flecks, but looks pretty ok.
Top: https://i.imgur.com/EAvgmuH.jpg
Bottom: (picture didn't upload)

Obviously the head is crashing, any idea why and if it's worth replacing 
the head or should I put this drive out for parts? Yes I cleaned the 
RL02 pack before putting it in.


Never dull.
CZ


Re: Looking for a Motorola Universal Data Systems 212A/D manual

2019-12-16 Thread Dennis Boone via cctalk
 > I ran across this modem (circa 1982) and saved it, but I have no idea
 > on how to control it.  Bitsavers doesn't seem to have a manual for
 > it.

You might try the v.25bis command set:

https://www.itu.int/rec/T-REC-V.25bis-199610-I/en

De


Re: Looking for a Motorola Universal Data Systems 212A/D manual

2019-12-16 Thread Michael Brutman via cctalk
Brent - thanks!  I had found the arcelect site and read the docs on a few
related modems; that gave me some insight.  But a lot of what they have is
more primitive that this one, so much of the manuals do not apply.

I opened the case looking for clues and taped to the underside of the lid
was a handwritten note that said "To awaken the UDS 212A/D mode send to UT
capital EN or H Help menu."  It was a little cryptic but sending "EN" did
launch me into a menu system that would let me dial or set pre-set phone
numbers for dialing.

At the moment it auto answers and tries to dial, but it won't complete a
connection.  My VOIP line might be to blame for that.  I'm happy because I
got really lucky with the handwritten note ...




On Mon, Dec 16, 2019 at 2:02 PM Brent Hilpert via cctalk <
cctalk@classiccmp.org> wrote:

> On 2019-Dec-16, at 10:35 AM, Michael Brutman via cctalk wrote:
> > I ran across this modem (circa 1982) and saved it, but I have no idea on
> > how to control it.  Bitsavers doesn't seem to have a manual for it.
> >
> > It's a big, blue plastic box and it looks wonderful.  There is an array
> of
> > 8 lights and 6 buttons; the HS button enables 1200 bps operation,
> otherwise
> > it is 300 bps.  It echoes characters and responds correctly to
> > DataTerminalReady not being asserted, so I think that if I can find the
> > command set it might be functional.
> >
> > It's a little more primitive than my original Hayes 1200 that I first got
> > in 1984.  (I'm not expecting a standard command set.)  A picture of it
> can
> > be found here:
> >
> > https://photos.app.goo.gl/zWBPimcpZNUch6G28
>
>
>
> These refs might give some clues:
>
>
> https://books.google.ca/books?id=u1cLS3rMWSwC=RA2-PA1-IA15=RA2-PA1-IA15=motorola+212A/D=bl=exwzJccl5t=ACfU3U2pl0FAtd80wNsCDz5MtxYdZxs4zg=en=X=2ahUKEwjFl-_SlLvmAhXTPn0KHb1TC4YQ6AEwCHoECAsQAQ#v=onepage=motorola%20212A%2FD=false
>
>
> (Switch configs for a model variation and reference to an "XXXT"
> escape sequence.)
>
> https://stason.org/TULARC/pc/modems-telephone-ISDN/M-O/MOTOROLA-INC-Modem-synchronous-asynchronous-212A-D.html
>
>
> (Manuals for related products)
> https://arcelect.com/Telenetics-UDS_202T-VDC_modem.htm
> https://arcelect.com/UDS_201BC-AS_modem.htm


Re: Tap, tap, tap, is this working???

2019-12-16 Thread crufta cat via cctalk
It may be that my address got into the local address book of a contaminated
system but stopping this net for several weeks brought
the spam and trash mail from 25-80 a day to zero near instantly (less than
12 hours.).I've bailed from the list in the past for periods
for the same reason.  I cannot filter the spam due to multiple reasons.

Its not bizarre as people do want valid addresses for scams and
legit offers for crap I do not want.

It is my belief that we have a user that is farming the list and getting
though spam filters.
If you do not. then great.  I've been active here for a very long time
(since I was on WSTD.COM).
It has been a persistent problem that always starts small and grows quickly
and then I start filtering
till I'm killing good mail.

On Mon, Dec 16, 2019 at 4:23 PM Peter Coghlan via cctalk <
cctalk@classiccmp.org> wrote:

> Allison wrote:
> >
> > I believe there is a someone or something that is subscribed to the list
> > and scrape it for active
> > names. and emails.  I have no idea what the specific how it is done but
> it
> > is a trivial coding
> > task to extract emails for sale as known active.  It was not coming
> though
> > the list but from
> > bots most likely and used list members names to obscure being
> > spam/uce//malware.
> > IT would nto take much to create a subscription and have that go to some
> > automation
> > to capture information.  The question is how many listen only members are
> > there that
> > have never ever posted a comment?
> >
>
> That is bizarre.  I've used the address used to post this message only for
> this mailing list for donkeys years now and it has received very close to
> zero spam.  The most recent spam I received arrived on 24th May 2019.
>
> Regards,
> Peter Coghlan
>


Re: Looking for a Motorola Universal Data Systems 212A/D manual

2019-12-16 Thread Brent Hilpert via cctalk
On 2019-Dec-16, at 10:35 AM, Michael Brutman via cctalk wrote:
> I ran across this modem (circa 1982) and saved it, but I have no idea on
> how to control it.  Bitsavers doesn't seem to have a manual for it.
> 
> It's a big, blue plastic box and it looks wonderful.  There is an array of
> 8 lights and 6 buttons; the HS button enables 1200 bps operation, otherwise
> it is 300 bps.  It echoes characters and responds correctly to
> DataTerminalReady not being asserted, so I think that if I can find the
> command set it might be functional.
> 
> It's a little more primitive than my original Hayes 1200 that I first got
> in 1984.  (I'm not expecting a standard command set.)  A picture of it can
> be found here:
> 
> https://photos.app.goo.gl/zWBPimcpZNUch6G28



These refs might give some clues:


https://books.google.ca/books?id=u1cLS3rMWSwC=RA2-PA1-IA15=RA2-PA1-IA15=motorola+212A/D=bl=exwzJccl5t=ACfU3U2pl0FAtd80wNsCDz5MtxYdZxs4zg=en=X=2ahUKEwjFl-_SlLvmAhXTPn0KHb1TC4YQ6AEwCHoECAsQAQ#v=onepage=motorola%20212A%2FD=false


(Switch configs for a model variation and reference to an "XXXT" escape 
sequence.)

https://stason.org/TULARC/pc/modems-telephone-ISDN/M-O/MOTOROLA-INC-Modem-synchronous-asynchronous-212A-D.html


(Manuals for related products)
https://arcelect.com/Telenetics-UDS_202T-VDC_modem.htm
https://arcelect.com/UDS_201BC-AS_modem.htm

Re: Is IBM RPG classic?

2019-12-16 Thread Kevin Monceaux via cctalk
On Sun, Dec 15, 2019 at 08:40:29AM -0800, Guy N. via cctalk wrote:

> Is it classic enough to ask about on this list?

Older fixed format RPG probably would be.  Modern free format RPG probably
wouldn't be.

> A friend of mine finds himself in the awkward position of being asked to
> take on some RPG programming, but knows nothing about it.

I knew very little about it before we migrated from our IBM mainframe system
running z/OS to an IBM i based system where I work a few years ago.

> Can anyone here suggest some good resources for a crash course in RPG?

It depends on the version and platform.  For free format on an IBM i,
something like:

https://www.Amazon.com/Free-Format-RPG-IV-Express-Learning/dp/1583474137

and/or

http://www.RedBooks.IBM.com/abstracts/sg245402.html

might be helpful.  And/or sites like the RPGPGM Blog:

http://www.RPGPgm.com

and/or RPG Cafe:

https://www.IBM.com/developerworks/ibmi/rpg/welcome





-- 

Kevin
http://www.RawFedDogs.net
http://www.Lassie.xyz
http://www.WacoAgilityGroup.org
Bruceville, TX

What's the definition of a legacy system? One that works!
Errare humanum est, ignoscere caninum.


Re: Tap, tap, tap, is this working???

2019-12-16 Thread Peter Coghlan via cctalk
Allison wrote:
>
> I believe there is a someone or something that is subscribed to the list
> and scrape it for active
> names. and emails.  I have no idea what the specific how it is done but it
> is a trivial coding
> task to extract emails for sale as known active.  It was not coming though
> the list but from
> bots most likely and used list members names to obscure being
> spam/uce//malware.
> IT would nto take much to create a subscription and have that go to some
> automation
> to capture information.  The question is how many listen only members are
> there that
> have never ever posted a comment?
>

That is bizarre.  I've used the address used to post this message only for
this mailing list for donkeys years now and it has received very close to
zero spam.  The most recent spam I received arrived on 24th May 2019.

Regards,
Peter Coghlan


Re: Tap, tap, tap, is this working???

2019-12-16 Thread crufta cat via cctalk
Simple I unsubed the old address and did a fresh subscription for a new one.

Why I did that is more interesting.

I have had issues with spam for a while and it was getting seriously worst
for the last year.
So I started shutting down any lists I had signed up for and this
(cctalk/cctech) was the last.
For a long while I thought it was yahoo groups but when they went away
there was no drop.
So I unsubed from here and it stopped, hard.

I believe there is a someone or something that is subscribed to the list
and scrape it for active
names. and emails.  I have no idea what the specific how it is done but it
is a trivial coding
task to extract emails for sale as known active.  It was not coming though
the list but from
bots most likely and used list members names to obscure being
spam/uce//malware.
IT would nto take much to create a subscription and have that go to some
automation
to capture information.  The question is how many listen only members are
there that
have never ever posted a comment?

This account is used only for this list.  If it gets spamed  then I know
its from and outlet
somewhere on the list but not majordomo and I have it cornered in a single
use account
I can ignore or destroy at a moments notice.

Allison


On Mon, Dec 16, 2019 at 7:34 AM Veit, Holger via cctech <
cct...@classiccmp.org> wrote:

> Am 14.12.2019 um 18:58 schrieb crufta cat via cctech:
> > Signed up this new account exclusively for CCtech and CCchat.
> >
> > Hopefully its working.  Why do this?  I had to shut off the
> > other subscription for spam reasons.
> >
> > Allison
> How did you manage to subscribe? I have been trying to change my
> subscription address for more than a year, and both web site as well as
> mail request have been completely ignored so far.
>
> Holger
>
>


Re: 8 inch floppies

2019-12-16 Thread Eric Dittman via cctalk

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 when I opened them for
inspection before use I noticed the extra wires and sensors.



Probably few folks remember what a struggle it was to develop a
double-sided floppy drive.  It's not just a matter of two identical
heads, one on each surface...


The system came with a bunch of disks.  I imaged them as single-sided 
40-track disks when I first got the system as that's what was normal

for the system and when I looked at the images in an emulator they
looked good.  After I realized the drive were flippy drives I then had
to go through the disks again with the flippy drive to make sure there
wasn't anything on the other side (there wasn't).
--
Eric Dittman


Re: Mac 3.5" floppies for anyone who wants them

2019-12-16 Thread Liam Proven via cctalk
On Mon, 16 Dec 2019 at 18:05, David Barto  wrote:
>
> And claimed.

Oh! Well, that was quick. :-)

-- 
Liam Proven - Profile: https://about.me/liamproven
Email: lpro...@cix.co.uk - Google Mail/Hangouts/Plus: lpro...@gmail.com
Twitter/Facebook/Flickr: lproven - Skype/LinkedIn: liamproven
UK: +44 7939-087884 - ČR (+ WhatsApp/Telegram/Signal): +420 702 829 053


Re: 8 inch floppies

2019-12-16 Thread Chuck Guzis via cctalk
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 noticed the extra wires and sensors.


Probably few folks remember what a struggle it was to develop a
double-sided floppy drive.  It's not just a matter of two identical
heads, one on each surface...

--Chuck


Re: Mac 3.5" floppies for anyone who wants them

2019-12-16 Thread David Barto via cctalk
And claimed.

David

> On Dec 16, 2019, at 8:55 AM, Liam Proven  wrote:
> 
> On Mon, 16 Dec 2019 at 17:52, David Barto via cctalk
>  wrote:
>> 
>> Last retry. I’ve still got them and if anyone wants them, let me know.
> 
> May I pass this message on, e.g. to one of the many LowEndMac groups?
> Anonymised if you prefer.
> 
> -- 
> Liam Proven - Profile: https://about.me/liamproven
> Email: lpro...@cix.co.uk - Google Mail/Hangouts/Plus: lpro...@gmail.com
> Twitter/Facebook/Flickr: lproven - Skype/LinkedIn: liamproven
> UK: +44 7939-087884 - ČR (+ WhatsApp/Telegram/Signal): +420 702 829 053



Re: 8 inch floppies

2019-12-16 Thread Eric Dittman via cctalk

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/3D0Z/GXL5XZ3U/FWP3D0ZGXL5XZ3U.LARGE.jpg


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 noticed the extra wires and sensors.
--
Eric Dittman


Re: Mac 3.5" floppies for anyone who wants them

2019-12-16 Thread Liam Proven via cctalk
On Mon, 16 Dec 2019 at 17:52, David Barto via cctalk
 wrote:
>
> Last retry. I’ve still got them and if anyone wants them, let me know.

May I pass this message on, e.g. to one of the many LowEndMac groups?
Anonymised if you prefer.

-- 
Liam Proven - Profile: https://about.me/liamproven
Email: lpro...@cix.co.uk - Google Mail/Hangouts/Plus: lpro...@gmail.com
Twitter/Facebook/Flickr: lproven - Skype/LinkedIn: liamproven
UK: +44 7939-087884 - ČR (+ WhatsApp/Telegram/Signal): +420 702 829 053


Re: Mac 3.5" floppies for anyone who wants them

2019-12-16 Thread David Barto via cctalk
Last retry. I’ve still got them and if anyone wants them, let me know.

David

> On Nov 11, 2019, at 1:17 AM, Geoff Reed  wrote:
> 
> Has anyone claimed these? This just came across my email.
> 
> On 10/20/19, 11:39 AM, "cctalk on behalf of David via cctalk" 
>  wrote:
> 
>A collection just came to me. These are the original disks, with whatever 
> labels are on them.
>As a set. First come first served.
>If you are in San Diego I’ll arrange a swap with you locally.
>If remote, we can arrange shipping.
> 
>1.44MB unless otherwise noted.
>Copyright years noted so version number might be determined along with 
> what version of Mac it might support.
> 
>GRAVIS Mac Blackhawk Version 1.0 (2 disk)
>ClarisWorks 4.0 (6 disks)
>ClarisWorks Small Business Solutions Pack.
>Correct Grammar For Mac Version 3.0 (2 disks)
>APS PowerTools V 1.3.1
>Mac ally Port Xpander Driver Program (copyright 1995-1997)
>Welltris, Spectrum Holobyte (800K disks, S/N 013045, 2 disks)
>MicroSoft Excel Version 4.0. (800K disks, 7 Disks, copyright 85-92)
>MicroSoft PowerPoint (800K disks, 4 disks, copyright 87-89)
>MicroSoft Mail Version 2.0 (800k?, Copyright 85-89)
>Conflict Catcher 3 (800K 1 disk)
>dantz Retrospect (2 disks, copyright 97)
>Suitcase II, (400K disk, S/N 4200-0103685 Copyright 86)
>Hayden Books - The Internet Starter Kit for Macintosh Disk. Contains:
>   Eudora 1.4
>   Fetch 2.1.1
>   InterSLIP 1.0
>   MacTCP 2.2
>   Stuffit Expander 3.03
>   TurboGopher 1.07
>Nova Development - American Handbook of Business Letters (800k?, Copyright 
> 90)
>Aladdin Stuffit Lite (800k?, Copyright 87-92)
>Aladdin Spring Cleaning (Copyright 96)
>Connectix Ram Doubler (800k?, 1.5.1 hand written on disk, copyright 94)
>CTSNET Macintosh Internet Signup 
> 
>Since my Father in law as Mac Only, I had no idea where these came from
>Windows Syquest SCSI installation Diskette 1, copyright 94
>Windows 95 Syquest Installation diskette 2
>DOS/Windows & OS/2 SCSI installation diskette 3
> 
> 
> 
> 
> 



Re: SMD disk specifications

2019-12-16 Thread Al Kossow via cctalk

On 12/15/19 10:22 PM, Mattis Lind via cctalk wrote:

While
the CMD and SMD drives could be used on the same host interface the Hawk
could not since the interface was different from the SMD interface.



I've been told by someone who worked down in OK that there were MANY different
OEM variations of the Hawk. I probably have a dozen sets of manuals for them
scanned but not on line. They all share similar Diablo/Pertec style interfaces.





Re: Tap, tap, tap, is this working???

2019-12-16 Thread Veit, Holger via cctalk

Am 14.12.2019 um 18:58 schrieb crufta cat via cctech:

Signed up this new account exclusively for CCtech and CCchat.

Hopefully its working.  Why do this?  I had to shut off the
other subscription for spam reasons.

Allison

How did you manage to subscribe? I have been trying to change my
subscription address for more than a year, and both web site as well as
mail request have been completely ignored so far.

Holger