Re: serial console

[Nicolas Pitre <nico@CAM.ORG>]

There is already a device wich is /dev/vcsa0 that gives the complete
screen layout, attributes and the cursor position.  This is what BRLTTY
uses.  The only thing missing here for a screen reader is access to the
console's keyboard.  For the keyboard, I think there is a character device
in the new 2.1.x kernels wich might give some informations but I've not
investigated much further.  What Screader is using i.e. what "screen" is
using is pseudo ttys wich is not the best solution because it can't give
access to all virtual consoles unless it runs on all of them.

On Fri, 16 Jan 1998, Chris Peterson, KG0BP wrote:

> A serial console wouldn't be exactly what would be necessary in this case.
> The ideal solution for the problem of screen reading would have to be a
> little different.
> 
> A modified console which would direct output to a file, or device, plus a
> piece of software which would be able to process that output and send it
> to a nother file or device, probably a speech synthesizer.  This second
> program would also be able to perform the required review functions
> through a review cursor or something.  It would also be able to use a
> synthcap to know how to talk to, and adjust settings on, a synthesizer.
> Screader is approaching this a little differently but is the closest thing
> yet to what is needed.
> 
> Hmmmmmm...  When I say "what is needed" I mean something that will speak
> from boot to shutdown, be able to review the screen, and adjust the speech
> characteristics of the synthesizer.  
> 
> After that's figured out, problems like highlight bars should be tackled.
> 
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Nicolas Pitre, B. ing.
nico@cam.org


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