Re: [SeaBIOS] ipxe/seabios: segment register initialization

[Michael Brown]

On 14/02/16 19:52, Michael S. Tsirkin wrote:
> On Sun, Feb 14, 2016 at 05:36:38PM +0000, Michael Brown wrote:
> > On 14/02/16 15:53, Michael S. Tsirkin wrote:
> > > do you think %DS should be zeroed when NBP is called then?
> >
> > Not according to the PXE spec.
> >
> > As far as I can tell, the initial value of %ds is undefined for both a PXE
> > NBP and a BIOS boot sector.
>
> Thanks,

Out of interest: did this question arise as a purely academic curiosity, 
or is there some product in existence which creates a boot sector that 
relies on %ds==0?

Michael