Pavel Roskin wrote:
On Wed, 2008-04-02 at 17:43 -0700, Colin D Bennett wrote:
Does GRUB code run in real mode? I was thinking that double-buffering
the graphics might be important for fancy graphics effects, and wondered
whether is it difficult to allocate and deal with a megabyte or so block
of memory? When I last programmed real mode programs in DOS, I know the
limitations based on segment sizes, etc., but it's been a while.
GRUB runs in protected mode, but it can switch to the real mode
temporarily to call BIOS. In any case, I believe that the menu
implementation should be portable rather than x86 PC specific.
Thanks for the info. Of course I also agree that the menu should be
portable; my mention of real mode was, I guess, a question of whether we
have a 32-bit linear address space, rather than specifics about the
processor mode.
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