[GreenKeys] 45, 50 ...etc. baud serial baudot interface for PC?

[Duncan Brown]

On 10-Mar-14 18:32, Dave wrote:
> On 10/03/2014 16:47, Jim Haynes wrote:
>> The older COM ports built into machines, or on add-in cards, go down to
>> 45 baud.  My understanding is that most of the recent USB-to-RS-232 port
>> devices will not go down to 45 baud.  And I don't know how, with recent
>> versions of Windows, you can get 45 baud even with hardware that will do
>> it.
> the MODE command still allows you to set 50 Baud... I don't have a 
> serial port on this PC but the RTTYArt program from here:-
>
> http://www.k7tty.com/development/software/index.html
>
> downloads and runs on Windows/7 64-bit...

If you have a  computer with a serial port, 45 baud is not a problem, 
but very few models have serial ports anymore.  (I don't think the MODE 
command works on USB??)

The problem comes from trying to convert from USB to serial.  Most USB 
to serial converters will not go slow enough for TTY.  Someone on the 
list was talking about programing a small CPU board for the USB to 
serial conversion.  I wonder if he got anywhere with it??

Duncan



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