Re: [Qemu-devel] [RFC PATCH 1/2] serial console, output

[Kevin O'Connor <kevin@koconnor.net>]

On Mon, Jul 04, 2016 at 06:03:30PM +0200, Paolo Bonzini wrote:
> On 04/07/2016 18:00, Kevin O'Connor wrote:
> > Does anyone know where one can find the original svn commit history
> > for sgabios?  Seems the original google code repo is no longer
> > present.
> 
> There was no history as far as I remember, mostly a code drop.

Ah, right.

I found what I was looking for though - it was in the sgabios
design.txt file instead of the revision history:


Summary of new enhancements
---------------------------
SGABIOS now keeps a log of the last 256 characters written to
the screen and where they were written in the event an application
like lilo asks for the current character under the cursor.  These
are currently stored in a 1KB EBDA allocation which can be expanded
as needed.  This method avoids having to store a 64KB buffer for
the largest possible serial terminal supported (255x255).


So, if I read the above correctly, it was lilo that inspired the
"feature".  Anyway, something to keep in mind.

BTW, lots of good info in the rest of design.txt.

Cheers,
-Kevin