[GreenKeys] Asr33: How are BREAK encoded ?

Julien Scrofani julien.scrofani at gmail.com
Tue Feb 21 06:31:43 EST 2017


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>
a écrit :

> From: Julien Scrofani [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
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