Re: [Qemu-devel] [PATCH 0/3] switch to seavgabios

[Michael Tokarev]

On 18.04.2012 14:31, Gerd Hoffmann wrote:
>   Hi,
> 
>>> Second, the display panning via vesa pmi was broken in qemu for three
>>> years(!) and nobody noticed.  The linux kernel's vesafb can use the vesa
>>> pmi, it is disabled by default though due to bioses tending to be buggy.
>>>  I'm not aware of other users.
>>>
>>> => Is this actually used by anyone?  Seems not ...
>>
>> It's used by me, when i feel nostalgic and want to watch old DOS stuff.
> 
> Pointer?
> I'd like to have a test case which breaks with the new vgabios.

We talked with malc briefly on irc yesterday, and this is what
he gave me:

http://cvs.savannah.gnu.org/viewvc/vgabios/vbe.c?root=vgabios&r1=1.47&r2=1.48

this is not the test case but the missing support he's referring to.

It appears the patch implements just 2 functions which both just does
int10, so should be easy to implement in seabios, but my knowlege
isn's sufficient to do that (it needs some asm coding).

Thanks,

/mjt