nanogui: Running document -- RTEMS framebuffer interface specification
Subject:
Re: Running document -- RTEMS framebuffer interface specification
From:
"Greg Haerr" ####@####.####
Date:
4 Feb 2000 17:51:46 -0000
Message-Id: <024b01bf6f36$ee7dc440$15320cd0@gregh>
Rosimildo,
As I think about this a little more, one important factor is
whether or not RTEMS wants to support graphics mode for
console operation. This adds complexity. If merely a framebuffer
is desired, it is quite a bit simpler, because all RTEMS has to manage
is the switch between text and graphics, video init, and the actual
framebuffer mapping.
To support a graphics console, there have to be quite a few more entry points,
and the framebuffer code has to support being accessible inside
the kernel, rather than just address-mapped video memory access to
applications.
Frank's PK supports a graphics console, and he has kept the
system quite simple. Perhaps his code is a good place to start.
Greg
