Limiting ssh to 110 Baud

[Casey Bralla]

In the "good old days", when I used an actual PDP-8, I used it with a hulking noisy teletype.  In my current PiDP-8 setup, I've throttled the Raspberry PI down to approximate the clock speed of the original PDP-8, but I'm using a ssh session on an old laptop as a terminal.

This means the effective terminal baud rate is like warp speed compared to the teletype.

I'd like to mimic the original 110 baud teletype.  Other than actually connecting via 110 baud serial connection, is there a way to throttle the effective baud rate of ssh?

TIA!

[timr...@gmail.com]

I don't think SSH can do this directly.  That's not what it's for.  I think you'd have to find a way to SSH via a serial port which would control the speed.  There is something

called socat that might work.  I have never tried this, but it does sound interesting.  I did a simple search and found an article on SSH into Ubuntu over serial which might

be a place to start.

[Steven Hirsch]

On Fri, 27 Sep 2024, timr...@gmail.com wrote:

> I don't think SSH can do this directly.  That's not what it's for.  I
> think you'd have to find a way to SSH via a serial port which would

> control the speed.  There is somethingcalled socat that might work.  I

> have never tried this, but it does sound interesting.  I did a simple
> search and found an article on SSH into Ubuntu over serial which might
> be a place to start.

The 'con' (console) terminal in PiDP-10 uses telnet connection and has a
"slow" mode complete with teletype sounds. Might be applicable to this
case?

>
> On Friday, September 27, 2024 at 3:38:37 AM UTC-5 casey...@gmail.com wrote:
> In the "good old days", when I used an actual PDP-8, I used it with a hulking noisy teletype.  In my
> current PiDP-8 setup, I've throttled the Raspberry PI down to approximate the clock speed of the
> original PDP-8, but I'm using a ssh session on an old laptop as a terminal.
>
> This means the effective terminal baud rate is like warp speed compared to the teletype.
>
> I'd like to mimic the original 110 baud teletype.  Other than actually connecting via 110 baud serial
> connection, is there a way to throttle the effective baud rate of ssh?
>
> TIA!
>

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[Clem Cole]

Maybe take a look at Lars and Oscar's sty33 code which is part of the PiDP-10 release:  https://github.com/obsolescence/pidp10/tree/master/src/sty33

It created a new "screen" (window) that is 72 columns, 110 baud, yellow "paper" with a 'TeleType" font that is upper case only and even makes the right sounds) when it prints to the screen.  The only two defects are it can not do overstrikes properly (it just leaves the last character printed on the 'paper') and you do not get the wonderful smell of light machine oil.  But it's pretty complete.

ᐧ

ᐧ

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[timr...@gmail.com]

Love the idea of a "TTY" with a pdp-8 as that is what was normally used at least until later.  I do miss the light oil smell as that is part of the enjoyment of a TTY.  And

the sound of course.