Rick,
I have a Rockwell AIM-65 and back in the day did a lot of laboratory data
acquisition and other things with them. I interfaced one to an atomic
absorption graphite furnace to collect the readings and compute the parts per
billion of various trace minerals in samples to translate 6 bit
I think the DN11 had several options available, but don't recall much about
them. I have one left if you need a look at it.
Paul
On Tue, Jun 4, 2019 at 9:57 PM Phil Budne via cctalk
wrote:
> See the v6 dn (IV) man page:
>
> http://man.cat-v.org/unix-6th/4/dn
>
> NAME
> dn - DN-11 ACU
On 6/5/19 11:38 AM, Fred Cisin via cctalk wrote:
Typically a thick flat disk that clipped to the dial, with a motor and a
clutch to permit the dial and disk to return to rest position.
That sounds suspiciously like you've seen something like I was trying to
describe.
But, a FINGER is such
On 6/5/19 3:08 PM, John Labovitz via cctalk wrote:
being a BBS aficionado I’d heard of a technique called ‘callback’
that some BBSes implemented, which allowed for using a POTS line for
both dial-up modem and for voice. The idea was that if you wanted
to dial into a BBS with callback, you’d
On 6/5/19 12:01 PM, Fred Cisin via cctalk wrote:
"MODEM" is short for "MODulator-DEModulator"
It is explicitly a device that took data and "MODULATED" it into audio
tones for the phone, and took tones from the phone and "DEMODULATED"
them into data.
Yes. That's generally what a modem is.
On Wed, Jun 5, 2019 at 4:54 PM systems_glitch via cctalk <
cctalk@classiccmp.org> wrote:
> full writeup here: http://www.glitchwrks.com/2019/06/05/pdp1110-psu-repair
>
> I finally fixed the power supply in my PDP-11/10S, it turned out to be a
> shorted bridge rectifier on the 5411086 board, which
Hi,
I think someone was looking for tape seals for 9 track tapes, a few weeks
ago.
If they can contact me offline, I have about 20 of varying sizes for
shipping cost or local pickup.
Stan
sie...@allegro.com
This talk of auto-dialers reminded me of a couple of things from modem culture…
I ran a BBS when I was a teenager in Maryland in the early 80s. We only had one
phone line (like most everyone else), but being a BBS aficionado I’d heard of a
technique called ‘callback’ that some BBSes
full writeup here: http://www.glitchwrks.com/2019/06/05/pdp1110-psu-repair
I finally fixed the power supply in my PDP-11/10S, it turned out to be a
shorted bridge rectifier on the 5411086 board, which provides +15 VDC, LTC,
and AC LO/DC LO. Unfortunately, when it failed, the rectifier burned up
On Tue, Jun 4, 2019 at 8:10 PM Rick Bensene via cctalk
wrote:
>
> I guess maybe I need to dig out my logic analyzer, and monitor the address
> and data busses, and trace out what is actually happening.
What kind of logic analyzer? For an HP 16500 series logic analyzer
there is a 6502 Inverse
On 06/05/2019 12:01 PM, Electronics Plus via cctalk wrote:
>
>
> -Original Message-
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Grant Taylor
> via cctalk
> Sent: Wednesday, June 05, 2019 10:42 AM
> To: cctalk@classiccmp.org
> Subject: Re: Modems and external
Prior to Carterfone V Western Electric, (1968) . . .
On Wed, 5 Jun 2019, Eric Smith via cctalk wrote:
The 1968 Carterfone decision did eventually result in customers being
allowed to hook their own devices up directly to the phone line, but
contrary to what a lot of online sources including
On Wed, Jun 5, 2019 at 11:38 AM Fred Cisin via cctalk
wrote:
> Prior to Carterfone V Western Electric, (1968) . . .
> There were DAAs RENTED by TPC ("The Phone Company" (cf, "The President's
> Analyst")), dialers RENTED by TPC, and acoustic couplers in the
> after-market.
[...]
> Prior to
- Original Message -
From: "Eric Smith via cctalk"
To: "General Discussion: On-Topic and Off-Topic Posts"
Sent: Wednesday, June 05, 2019 12:27 PM
Subject: Re: Catatonic Rockwell AIM-65
> On Wed, Jun 5, 2019 at 1:15 AM Eric Smith wrote:
>
>> I might use those for something else,
> But, a FINGER is such a better visual image!
> There were devices that sat on top of the "hook" of the phone (where the >
> handset rested to hang up, with the handset on top of them. A solenoid >
> could lift the handset for "off-hook", and set it down again for hang-up.
Did anyone
On Wed, 5 Jun 2019, Liam Proven via cctalk wrote:
One of my favourite things to do with its successor model (the Series
5) was pull up an address entry, and when someone pulled out a Palm
Pilot and starting trying to scribble Graffiti into it, to stop them
and transmit the contact to them by
On Wed, 5 Jun 2019, Grant Taylor via cctalk wrote:
So the phone played an active role in modem communications. At least in so
far as it converted the purely audio from the modem to telephony used by the
PSTN.
"MODEM" is short for "MODulator-DEModulator"
It is explicitly a device that took
On Wed, Jun 5, 2019 at 11:45 AM Grant Taylor via cctalk
wrote:
> On 6/5/19 9:58 AM, Ethan Dicks via cctalk wrote:
> > Not quite... the USD 801 ACU I keep mentioning supported dialing using
> > either RS-232 or RS-366 over the same physical port. It was a flexible
> > device that would work with
On Wed, 5 Jun 2019, Grant Taylor via cctalk wrote:
I have this mental picture, which I think is based on something I've
seen at some point in the past, that was a device that attached /
actuated / ??? a traditional rotary dial phone. As in it had a finger
that interfaced with the dial and
On Wed, Jun 5, 2019 at 11:27 AM John Labovitz via cctalk
wrote:
> I do recall a little handheld device with a touchtone keyboard that you could
> fit
> over the microphone of a normal handset. It wasn’t automated, but at least you
> didn’t have to use the rotary dial. (This presumed, of course,
On Tue, Jun 4, 2019 at 8:30 PM allison via cctalk
wrote:
> Keep in mins the hardware for auto dial required some for of micro and
> that was a post 1974 thing for the most part. A few before that had a
> lot of TTL state machine to do that. They obviously weren't cheap.
>
AFAIK the first
On 6/5/19 10:27 AM, John Labovitz via cctalk wrote:
Character-based I/O on mainframes and even minicomputers was fairly rare
at that point. On some systems it was impossible; on others it was very
CPU-intensive. I remember trying to do character I/O on a Tandem NonStop;
it wasn’t easy, or
On Wed, 5 Jun 2019 at 18:40, Bill Gunshannon via cctalk
wrote:
>
> Why? Handheld touchtone generators were very common in the
> the early 90's. Even the late 80's. I bought mine in Radio
> Shack. They were often needed if your employer used an in
> house private phone network (like MMDS where
On 6/5/19 9:58 AM, Ethan Dicks via cctalk wrote:
Not quite... the USD 801 ACU I keep mentioning supported dialing using
either RS-232 or RS-366 over the same physical port. It was a flexible
device that would work with a parallel dialing controller like the DEC
DN11 or by just using a second
On 6/5/19 12:30 PM, Liam Proven via cctalk wrote:
> On Wed, 5 Jun 2019 at 18:27, John Labovitz via cctalk
> wrote:
>
>>
>> I do recall a little handheld device with a touchtone keyboard that you
>> could fit over the microphone of a normal handset. It wasn’t automated, but
>> at least you
On Wed, Jun 5, 2019 at 1:15 AM Eric Smith wrote:
> I might use those for something else, but I don't think those specific
> models aret useful for a base AIM-65. The 2332 ROMs in it (or 2532 EPROM
> are 24-pin devices, and the adapters you linked plug into 28-pin sockets.
>
Mike pointed out to
On Wed, 5 Jun 2019 at 18:27, John Labovitz via cctalk
wrote:
>
> I do recall a little handheld device with a touchtone keyboard that you could
> fit over the microphone of a normal handset. It wasn’t automated, but at
> least you didn’t have to use the rotary dial.
This was a built-in feature
On Jun 5, 2019, at 11:42 AM, Grant Taylor via cctalk
wrote:
> Why did it require a micro? Could the host not perform the function that the
> micro would do? […] Why couldn't that state machine be implemented in
> software on the host using the modem & auto-dialer?
Character-based I/O on
-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Grant Taylor
via cctalk
Sent: Wednesday, June 05, 2019 10:42 AM
To: cctalk@classiccmp.org
Subject: Re: Modems and external dialers.
On 6/4/19 8:30 PM, allison via cctalk wrote:
> Keep in mins the
On Wed, Jun 5, 2019 at 10:42 AM Grant Taylor via cctalk
wrote:
> Reading the links that Ethan provided, it sounds like some auto-dialers
> did use a second port, but it was not a second (recommended) standard
> 232 port. Instead it was an RS-232 and RS-366.
>
> Aside: RS-366 sounds odd. A
On 6/4/19 8:30 PM, allison via cctalk wrote:
Keep in mins the hardware for auto dial required some for of micro and
that was a post 1974 thing for the most part.
Why did it require a micro? Could the host not perform the function
that the micro would do?
A few before that had a lot of TTL
On Tue, Jun 4, 2019 at 10:50 PM Tony Duell via cctalk
wrote:
> On Wed, Jun 5, 2019 at 2:45 AM Grant Taylor via cctalk
> wrote:
> >
> > Does anyone have any experience working with modems that didn't include
> > internal / auto dialers?
>
> It wasn't normally a serial port. It was on a DB25
>
> I looked at the address 0 line, and pressed the RESET button, and it'd wiggle
> for a short period of time, then go high. Hmm... I looked at the other
> address lines, and while not all of them wiggled, they all ended up at logic
> 1 after a short period of time, as if the CPU was stuck
On Tue, Jun 4, 2019 at 11:58 PM Mike Stein via cctalk
wrote:
> If you're going to get/make an adapter to convert the 2532 pinout to the
> 2732 JEDEC standard, you might want to consider one of the commercially
> available ones that let you put in up to a 27512; that lets you select any
> one of
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