Re: [NTLK] Serial port speed

From: Humphreys, David (david.humphreys_at_honeywell.com)
Date: Tue Jul 03 2001 - 16:47:57 EDT


On July 3, Paul Guyot wrote:
 
> The low-level code is in Waba. Pass 28800 as the serial port speed,
> and test if the port is indeed open. If it's not, it's that you can't
> connect at this speed, at least, not with standard low-level APIs.

I must admit, I have heard of this Waba but I don't know
much about it. I don't know how to do this.
:(

> Now, if you tell me you want to talk to the serial chip directly,
> well, umm, I can tell you how to do this, but I hope you have the
> chips specs.

Well, that's closer to a solution for me but will probably need
a lot of work for what I have in mind.

 
> BTW, you can also use an external clock if you really need
> communications at 28800.

I had thought about this but it only solves part of the problem.

All I want to do is hit the 'dock' icon and on the 'Connect using'
pull down, have a selection for '28800bps'. The serial port would
then communicate at that speed.

Quite how this scenario is achieved is open for debate at the moment
but, combined with other modifications that I am still working out,
I will be able to use the serial port and the keyboard while the
Newton is overclocked!
This would really close a hole in the serial port operation.
The hardware fix, so far, is trivial (for me anyway ;))
It all hangs on being able to manipulate the port speed.
Maybe a special driver is required.
This is why I am asking my insane questions.

If it works, I will gift the idea to the Newton community and post
a how-to-do on my website.

All help is appreciated.

Regards,

David Humphreys

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