On 30-Apr-2002 Antonino Daplas wrote:
>> As far as I can tell at the moment, in take_over_console the outgoing
>> console
>> is suppose to save its screen contents (if visible) and these will be put
>> onto
>> the new console when update_screen() is called. Dumping the saved VGA
>> screen,
>> it seems that the saved screen consists entirely of 0x720, which I think
>> explains the white. Why the VGA screen contents are like that I have, as
>> yet, no
>> idea.
>>
> If I remember PC text mode correctly, 0x720 is the correct code for
> space. 7 is the attribute (I forgot what it stands for though -
> probably normal) and 20 is just the ASCII code for space. So, the
> console essentially blanked your screen, but is misinterpreted when
> switched to graphics mode.
Sorry, I got that detail wrong in the original message. The 0x720s are what is
in vc_screenbuf *before* calling save_screen(). save_screen() produces 0xffff
(for me on pm2fb), which I am sure is responsible for the white rectangle I see.
--
Jim Hague - jim...@in... (Work), ji...@be... (Play)
Never trust a computer you can't lift or you don't control.
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