[SeaBIOS] shadow RAM requirement

[Kevin O'Connor]

On Fri, Jul 22, 2011 at 03:06:02PM +0200, Łukasz Mielicki wrote:
> Hi,
> 
> I'm trying to run SeaBIOS in an environment where I have difficulties with
> enabling a shadow RAM.
> Is there a chance to w/a requirement for writable 0xF000 seg in SeaBIOS?
> Could some of group members briefly estimate a scope of necessary changes?

SeaBIOS stores global variables in the f-segment, and so it requires
that the f-segment be writable.

Requiring that the f-segment be writable was a significant code
simplification - I don't see a way to remove that requirement without
re-introducing the associated complexity.

-Kevin