Re: [NILO-discuss] Zen and the art of running in real mode

[H. P. A. <hp...@zy...>]

Michael Brown wrote:
> On Wed, 9 Mar 2005, H. Peter Anvin wrote:
> 
>>>>Right.  With appropriate descriptors set up they could work in 16-bit 
>>>>protected mode, though, for supporting the PM entry point.
>>>
>>>They could, but that wouldn't help the code when it's called via the RM 
>>>entry point.
>>
>>Supporting V86 mode entry via the RM entry point is probably futile.
> 
> 
> If we support "pure real mode" operation, then it should just work in V86 
> mode.
> 

For what it's worth, I talked some about this with a couple of guys from 
Intel, and they said they ended up adding I/O mapped access to the e1000 
specifically because PXE was buggered.

	-hpa