On Wed, 2013-02-13 at 10:44 +0100, Fred . wrote:
Can SeaBIOS init to a high resolution video mode such as 1920x1200?
I'm not entirely sure what you're asking. Can SeaVGABIOS initialise a high-resolution mode? Yes. It supports 1920x1200 and 2560x1600 modes. All you have to do is call INT 10h with the appropriate mode-setting request.
Or are you asking if it can do so *power-up*, setting a graphical mode so that nothing displays as expected, because operating systems and bootloaders expect the screen to be in *text* mode? To which the answer would be that yes it *can* be patched to do so, but that would be bad.
Or are you asking if it can do so for the OVMF/CSM case? In which case again it *could* but OVMF is about to set the mode for itself anyway so it would be pointless.