Resource Allocation for Option Rom

[Eric W. Biederman]

Stefan Reinauer <stepan at openbios.org> writes:

> * ron minnich <rminnich at lanl.gov> [040527 23:21]:
> > again, you do not need to map option roms at 0c0000 in the emulator!
> > 
> > Map it anywhere, tell the emulator the location, and the emulator can 
> > satisfy memory "fetches" for c0000 by fetching from that location. 
> 
> indeed true. But for x86 hardware, putting all of the x86 emulator in
> rom is less elegant than vm86 stuff, even though I have no clue about
> the later.

Last I heard some Option Roms switch to 32bit mode.  You can't do
that in vm86 mode.  In general using vm86 is a way to put your fate
in someone else's hands.

We could possibly call the option roms directly but unless the space
cost is high an open source emulator is a good choice.

Eric