[GreenKeys] Asr33: How are BREAK encoded ?

[Wayne Durkee]

I am not a computer guy, but Break is something used with your computer, not the Teletype although TWX machines had a Break key, but I have forgotten what it was for.

Wayne


> On February 21, 2017 at 6:31 AM Julien Scrofani <julien.scrofani at gmail.com> wrote:
> 
>     Hi guys,
> 
>     Thank you for your responses.
> 
>     The start and stop units are not parts of the punched code on the tape, right ?
>     How then, when I read the tape, does the adapter convert these sequences into BREAK sequences ?
> 
>     Julien
> 
>     Le mar. 21 févr. 2017 à 05:05, Jones, Douglas W <douglas-w-jones at uiowa.edu mailto:douglas-w-jones at uiowa.edu > a écrit :
> 
>         > > From: Julien Scrofani [julien.scrofani at gmail.com mailto:julien.scrofani at gmail.com ] Monday, February 20, 2017 2:09 PM
> > 
> > 
> > 
> >         > I taped several BREAK sequences with the tty puncher, pressing my finger more or less time on the key.  The punched codes differ a lot (see pic). When I read the tape, toward my terminal via the usb current loop adapter, all BREAK are correctly converted.
> > 
> >         Are they coded with several bits patterns ? If not, how are they interpreted correctly by the adapter ?
> > 
> > 
> > 
> >         The adapter recognizes break by the lack of a stop bit at the end of the character, not by the bit pattern.
> > 
> > 
> > 
> >                         Doug Jones
> > 
> >                         jones at cs.uiowa.edu mailto:jones at cs.uiowa.edu
> > 
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