Stefanos Papanicolopulos <[EMAIL PROTECTED]> writes:

> I believe this had been discussed a while ago, but I can't find it, and
> I would
> also like to know if there has been anything newer on this:
> 
> What would happen if linuxbios insted of loading an operating system or
> boot loader
> would load an image of the BIOS, revert to 16bit mode and jump to it?

It can load an image of a 16bit BIOS but I doubt you can jump to
a BIOS not built for it.  The problem being that a BIOS needs to
enable and setup ram, and ram is already enabled and setup, and you
can only do that once.

> Of course the answer I would like to hear is "everything would work ok
> and it would
> be as if linuxbios had never run, and you could run that other OS noone
> ever mentions
> and live happily ever after", but I guess it is not that easy. (For
> example, is
> the 'revert to 16bit mode' possible without using VM86?)

Yes.  That part is easy.  With LinuxBIOS you can write a motherboard
indepedant x86 BIOS like bootloader, that just handles the part of the
x86 BIOS that everyone sees.  And except for loading a table whenever
LinuxBIOS loads anything it is like it never existed.

Eric

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