Re: Teletype mod 40 PSU

[Chuck Guzis via cctalk]

On 09/08/2018 08:10 PM, Ed Sharpe wrote:
> Yepper   the  material that holds all together...
>  
> I  remember  back in the  first  year in  Computer  Biz  we  came across
> one of these and it was  fun  to watch it  run self  test fast!  
> sold it to someone that had one and interfaced it already...
>  
> Always  wanted  later  a combo  for museum  display of the  CRT and the 
> Printer... There is a great  glossy that  shows up on ebay  time to time
> that was a press photo of a gal  with the combo at a desk...

It's a bit surprising to see how few pieces of old peripherals have
survived.  Sometime around 1985, we had a VAX 11/750 driving two CDC
(MPI) big 1500 (IIRC) LPM printers.  I don't know whatever became of
them, but we couldn't have been an isolated instance.

It seems that more CPUs have survived than the accompanying peripherals.
 This, in spite of installations with oceans of disk and tape drives,
for example.

--Chuck

Re: Teletype mod 40 PSU

[Chuck Guzis via cctalk]

On 09/08/2018 05:25 PM, Ed Sharpe wrote:
> but the  materials of  the  belts  deteriorate that  hold them together
> I  have  been  told   by  tty  collectors...   verify?

You're taking about the carrier for the print pallets?  Yeah, I don't
know how easy it would be to fabricate a replacement.

PDF page 388 is an example:

https://ia800509.us.archive.org/15/items/bitsavers_teletypemod404540ComponentsServiceApr82_54361338/325-073_Dataspeed_40_4540_Components_Service_Apr82.pdf

No matter, I seem to recall that quite a number of special ICs and
modules were used in the electronics.

I really don't know how common these are in the wild nowadays.
Probably less common than the Model 40 CRT terminals.


--Chuck

Re: Oddball Terminals (Was: Re: VT100's)

[Chuck Guzis via cctalk]

On 09/08/2018 03:57 PM, Warner Losh wrote:

> My first TTY was the DECwriter II. My first terminal was a Beehive
> BH100. I hacked together some TECO to support it on a local
> vi/emacs/EDT-like visual mode editor... IIRC, the escape sequences were
> put into specific numbered registers as TECO macros. A poor man's curses
> in the mid 70's I thought it was super cool until I discovered emacs
> at school on our 11/750...
>

Before I got real disks on my MITS box, I used a Techtran dual-deck
paper tape simulator as storage (one deck read-only, the other
read/write and block searchable) and the Beehive as a rudimentary word
processor.  Read up a page, edit offline, and then hit "Transmit".

Early CPT word processors worked in a similar manner.

IIRC, the Super Bee used an 8008 and a whole mess of shift registers for
storage.

--Chuck

Re: Teletype mod 40 PSU

[Ed Sharpe via cctalk]

but the  materials of  the  belts  deteriorate that  hold them together I  have 
 been  told   by  tty  collectors...   verify?


 
Ed#
 
 
In a message dated 9/8/2018 3:33:53 PM US Mountain Standard Time, 
cctalk@classiccmp.org writes:

 
On 09/08/2018 12:57 PM, Ed Sharpe via cctalk wrote:

> alas most of the bands have desnigrated I understand... any working ones ? ed#

Dunno--I suppose if someone were dedicated enough, it wouldn't be
horribly difficult to fabricate a band, but I suspect that deep in some
dusty warehouse there are a ton of spares. WU used these printers quite
a bit. Probably easier to find than many old type trains.

The benefit, of course is that it printed fully-formed characters at 150
lpm--i.e. a true line printer, not a character printer masquerading as one.

I still have some technical documents that I did back in the day printed
with one of these.

I do recall that we wore the zeroes out more than the other characters,
but then, we printed a lot of dumps on the thing.

--Chuck

Re: Oddball Terminals (Was: Re: VT100's)

[Warner Losh via cctalk]

On Sat, Sep 8, 2018, 12:06 PM Chuck Guzis via cctalk 
wrote:

> On 09/08/2018 10:07 AM, John Many Jars via cctalk wrote:
> > I miss my old Televideo 910.  I wonder if Steve Albany stole it?
> >
> > At ASU, when I was a kid pulling DECwriter printers out the bin to check
> > for printouts in half-duplex, they had something called an Infoton.  It
> was
> > uppercase only and had the worst keyboard, ever.  It felt like typing on
> a
> > wet sponge.
>
> Heck, I miss my Beehive Super Bees.
>

My first TTY was the DECwriter II. My first terminal was a Beehive BH100. I
hacked together some TECO to support it on a local vi/emacs/EDT-like visual
mode editor... IIRC, the escape sequences were put into specific numbered
registers as TECO macros. A poor man's curses in the mid 70's I thought
it was super cool until I discovered emacs at school on our 11/750...

Warner

>

Re: Teletype mod 40 PSU

[Chuck Guzis via cctalk]

On 09/08/2018 12:57 PM, Ed Sharpe via cctalk wrote:
> alas most of the bands have desnigrated I understand... any working ones ?  
> ed#

Dunno--I suppose if someone were dedicated enough, it wouldn't be
horribly difficult to fabricate a band, but I suspect that deep in some
dusty warehouse there are a ton of spares.  WU used these printers quite
a bit.   Probably easier to find than many old type trains.

The benefit, of course is that it printed fully-formed characters at 150
lpm--i.e. a true line printer, not a character printer masquerading as one.

I still have some technical documents that I did back in the day printed
with one of these.

I do recall that we wore the zeroes out more than the other characters,
but then, we printed a lot of dumps on the thing.

--Chuck

Re: Teletype mod 40 PSU

[Ed Sharpe via cctalk]

alas most of the bands have desnigrated I understand... any working ones ?  ed#

Sent from AOL Mobile Mail

On Saturday, September 8, 2018 Chuck Guzis via cctalk  wrote:
On 09/08/2018 11:53 AM, Paul Anderson via cctalk wrote:
> I think the MOD 40 came out in the 70s Was the Dataspeed the video?

Yup. The model 40 band printer was something that could do 150 lpm on
14" tractor feed and could fit on a tabletop. Sold as a
Centronics/Dataproducts interfaced unit by several third-party vendors.
We had one hooked to an MDS 800 to churn out listings. A great unit for
the time.

Always sold with a an acoustic cover, however--the naked bugger was very
loud. I think I still have a set of schematics for it.

--Chuck

Re: VT100's

[Zane Healy via cctalk]

> On Sep 7, 2018, at 10:55 PM, Josh Dersch via cctalk  
> wrote:
> 
> TI made a clamshell portable VT220-compatible terminal with an LCD screen,
> the Travelmate LT220.  It's very nice, the LCD is high-contrast (but no
> backlight) and it even has a built in 2400bps modem.  I believe it can run
> off of a battery as well.  It's very handy.
> 
> There's a picture of one near the bottom of this page:
> http://ummr.altervista.org/sistemi_x86.htm 
> 
> 
> - Josh

That’s an interesting terminal.  Totally pointless for me, but it would be cool.

Zane

Re: Teletype mod 40 PSU

[Jason T via cctalk]

On Sat, Sep 8, 2018 at 2:09 PM Chuck Guzis via cctalk
 wrote:
> Yup.  The model 40 band printer was something that could do 150 lpm on
> 14" tractor feed and could fit on a tabletop.  Sold as a
> Centronics/Dataproducts interfaced unit by several third-party vendors.
> We had one hooked to an MDS 800 to churn out listings.  A great unit for
> the time.
>
> Always sold with a an acoustic cover, however--the naked bugger was very
> loud.   I think I still have a set of schematics for it.

Through whatever happenstance led that stuff into my hoard, I've got
the acoustic enclosure for that printer but...not the printer.  Not
really in a hurry to replace it, but it would be nice someday to see
the two reunited.

Re: Teletype mod 40 PSU

[Chuck Guzis via cctalk]

On 09/08/2018 11:53 AM, Paul Anderson via cctalk wrote:
> I think the MOD 40 came out in the 70s Was the Dataspeed the video?

Yup.  The model 40 band printer was something that could do 150 lpm on
14" tractor feed and could fit on a tabletop.  Sold as a
Centronics/Dataproducts interfaced unit by several third-party vendors.
We had one hooked to an MDS 800 to churn out listings.  A great unit for
the time.

Always sold with a an acoustic cover, however--the naked bugger was very
loud.   I think I still have a set of schematics for it.

--Chuck

Re: Teletype mod 40 PSU

[Paul Anderson via cctalk]

I think the MOD 40 came out in the 70s Was the Dataspeed the video?

For some reason, I never had any luck with the link, and can't find the
second one.

On Sat, Sep 8, 2018 at 1:36 PM, Jason T via cctalk 
wrote:

> On Fri, Sep 7, 2018, 23:08 Paul Anderson via cctalk  >
> wrote:
>
> > I have a teletype 40PSU101 I can drop off at VCFMW or mail, but is is a
> bit
> > heavy.
> >
> > If you have any interest, please contact me off list.
> >
>
>
> Is this for the Dataspeed 40 terminal?  If so, I have two of those and one
> of them is dead. Who knows, maybe it's the power supply.
>
> >
>

Re: Teletype mod 40 PSU

[Jason T via cctalk]

On Fri, Sep 7, 2018, 23:08 Paul Anderson via cctalk 
wrote:

> I have a teletype 40PSU101 I can drop off at VCFMW or mail, but is is a bit
> heavy.
>
> If you have any interest, please contact me off list.
>


Is this for the Dataspeed 40 terminal?  If so, I have two of those and one
of them is dead. Who knows, maybe it's the power supply.

>

Re: Oddball Terminals (Was: Re: VT100's)

[Chuck Guzis via cctalk]

On 09/08/2018 10:07 AM, John Many Jars via cctalk wrote:
> I miss my old Televideo 910.  I wonder if Steve Albany stole it?
> 
> At ASU, when I was a kid pulling DECwriter printers out the bin to check
> for printouts in half-duplex, they had something called an Infoton.  It was
> uppercase only and had the worst keyboard, ever.  It felt like typing on a
> wet sponge.

Heck, I miss my Beehive Super Bees.

--Chuck

Re: Oddball Terminals (Was: Re: VT100's)

[Ed Sharpe via cctalk]

Infotrons!   and the old  UPPER  CASE ONLY  BEEHIVES!


I  remember those and also  the old  TEC terminals
 
A recent  TEC   endowment to the museum was  of all these multi colored  books  
TEC  put out on all their  terminal lines.   I need  to see   where  they  may 
already  be  scanned.. in   not  can  go on the someday to be scanned   stack.
 
checking bitsavers http://www.bitsavers.org/pdf/tec/   I  see  there are    
some  listed so maybe  not all that  unusual...  will see  what   we have  they 
  don't.
 
We  had a  TEC  terminal  in the  computer  room  at  Computer Exchange at  one 
 time wish I had  kept it.
 
there   is  one  model upper  case beehive  I  need  for a   display if anyone  
still has  some   drop me  a  line email offlist  thx  ed#  www.smecc.org
 
In a message dated 9/8/2018 10:07:26 AM US Mountain Standard Time, 
cctalk@classiccmp.org writes:

 
I miss my old Televideo 910. I wonder if Steve Albany stole it?


At ASU, when I was a kid pulling DECwriter printers out the bin to check
for printouts in half-duplex, they had something called an Infoton. It was
uppercase only and had the worst keyboard, ever. It felt like typing on a
wet sponge.

Re: Oddball Terminals (Was: Re: VT100's)

[John Many Jars via cctalk]

I miss my old Televideo 910.  I wonder if Steve Albany stole it?

At ASU, when I was a kid pulling DECwriter printers out the bin to check
for printouts in half-duplex, they had something called an Infoton.  It was
uppercase only and had the worst keyboard, ever.  It felt like typing on a
wet sponge.

Re: Oddball Terminals (Was: Re: VT100's)

[Liam Proven via cctalk]

On Fri, 7 Sep 2018 at 21:08, Al Kossow via cctalk  wrote:
>
> I just put up some pictures of the vt02, 05, 20, and 71t
> under http://bitsavers.org/pdf/dec/terminal

Oddly, since others are commenting, this whole site is inaccessible
for me in Prague, both yesterday and today.

«
This site can’t be reached

bitsavers.org took too long to respond.

Search Google for bitsavers org pdf dec terminal

ERR_CONNECTION_TIMED_OUT
»

I wanna see the piccies! :'(


-- 
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: VT100's

[Christian Corti via cctalk]

On Thu, 6 Sep 2018, Paul Koning wrote:
The work of a VT100 is quite a lot more complex than that of a VT52 
(many more screen operations, and more complex control sequence 
parsing).  With the hardware technology available at the time, it was a 
pretty tough job.  Does the VT100 have a microprocessor? It may predate 
those.  In hardwired 7400 series logic, it isn't an easy job.


Yes, the V100 has an Intel 8080, the stripped-down V101 has an Intel 8085.

Christian