Thanks Marc for these information.? I will go study this from your link ;)
Dominique
On 9/12/2021 00:21, Curious Marc wrote:
Dominique,
Nice to see your machine working so well! I like how it lights up from
the inside. To connect it to a computer, you could simply get a Volpe
board that does the Baudot 60 mA loop to ASCII RS 232 conversion for
you, or build one yourself like I did. Info on both here:
https://www.curiousmarc.com/mechanical/teletype-model-19#h.p_2ltO4LwPtuZR
Matc
> On Dec 8, 2021, at 12:29 PM, Dominique Carlier via cctalk
> <cctalk at classiccmp.org> wrote:
>
> ?The subject interests me because I have the same beast but which
> only works in local mode. I currently don't know what is required to
> send text in this monster through a computer
> Below is a link to a video of my machine in action:
>
>
https://www.youtube.com/watch?v=dL-XU855C80
>
> Dominique
>
> On 8/12/2021 20:52, Paul Koning via cctalk wrote:
>> No, it's 5 bit tape. ?2 data bits, transport sprocket holes, 3 data
>> bits -- top to bottom on the reader (right side), left to right on
>> the punch (left side).
>>
>> DEC PDP-10 systems used six bit code internally but I don't remember
>> those appearing on punched tape. ?The punched tape machines I have
>> seen with 6 channels are typesetting devices, from early tape
>> operated Linotype machines (1940s vintage) to 1960s or 1970s era
>> phototypesetters. ?Those are upper/lower case.
>>
>> ? ?paul
>>
>>> On Dec 8, 2021, at 2:23 PM, Mike Katz <bitwiz at 12bitsbest.com>
wrote:
>>>
>>> I thought I had recalled that Baudot was 5 bits but the paper tape
>>> is 6 bits across and I don't know of any 6 bit character codes
>>> except for DECs upper case only character set and even their paper
>>> tape had 8 bits so I guessed Baudot.
>>>
>>> On 12/8/2021 1:16 PM, Paul Koning wrote:
>>>> 5 bit; if it really were 6 bits it would typically be typesetting
>>>> codes.
>>>>
>>>> That's a relative of the machine used as console terminal on Dutch
>>>> Electrologica X8 computers; I recognize the "Iron cross"
symbol,
>>>> the figures shift character on the D key. ?But some of the other
>>>> function codes have different labels so it isn't actually the same
>>>> model.
>>>>
>>>> The description I have says that the X8 console used CCITT-2,
>>>> a.k.a., Baudot, code but with the bit order reversed. ?And also
>>>> that it used the all-zeroes code as a printable character rather
>>>> than as non-printing fill.
>>>>
>>>> ? ?paul