[NTLK] Fwd: NCU and serial connection at 230k and 115k

From: Giulio Marchi <emfdb_at_tiscali.it>
Date: Fri Apr 21 2006 - 18:07:46 EDT

In a final attempt to solve this issue, I found at least some answers
to my questions. Unfortunately I found the answers to the "ancillary"
issues and not to the main one.

The "Keyspan USA28X Manager", i.e. the Advanced panel, has a known bug
in OS X and it may be opened by directly accessing it under the Mac OS
9 System Folder or through a direct boot in OS 9. This is reported in

With regard to the maximum speed, I noticed that the USA-28X web page
reports that it "supports data rates up to 1 Mbps"
(http://www.keyspan.com/products/usb/USA28x/), differently than other
Keyspan models (e.g. see

Now, even accessing the "Keyspan USA28X Manager", playing with the
configurations ("Emulate printer port" and "Double baud rate"), always
disconnecting and plugging the adapter and closing and reopening NCU,
still with the Serial Enabler set to 230400, I can not set a connection
with the Newton and the Serial 230400 extension. In addition, strange
enough, the "Stats" button gives a window where I noticed the baud rate
of 76800, suspiciously close to the one I roughly measured when
connecting at "115200".

I also found a shareware called "SerialSpeed 230" that *should* do the
job but according at least to Adriano
(http://tools.unna.org/wikiwikinewt/index.php/230KSerialConnection), I
would need only NCU, Serial Enabler and the Serial 230400 extension.

Any hint? Adriano?

Thanks in advance,


Inizio del messaggio inoltrato:

> Da: Giulio Marchi <emfdb@tiscali.it>
> Data: 20 aprile 2006 23:36:13 CET
> A: newtontalk@newtontalk.net
> Oggetto: [NTLK] NCU and serial connection at 230k and 115k
> Rispondere-A: newtontalk@newtontalk.net

> ...

> Given that occasionally some success has been reported on this list for
> the 230k connection with NCU (but I could not trace the useful and
> practical details of the story):
> - Is there something I am missing? Or is NCU (or the USA-28X) limited
> to 115k? I read somewhere about a possible limitation to 115k for the
> previous USA-28 model.
> - Is it normal that the Advanced button of the Keyspan Assistant in
> emulated Classic doesn't do anything but "click"? If that is the case,
> where can I set the 230k speed in order to make it work with NCU?
> Thanks,
> Giulio

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Received on Fri Apr 21 18:08:11 2006

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