What text mode does GRUB 0.97 use?

[jasonc122]

Hi,

What text mode does GRUB 0.97 use once it has loaded an OS image?

Thanks.

[Creature]

If you mean what "resolution" then I guess it would be whatever is default? AFAIK GRUB doesn't explicitely set a mode. 80x25 is what I always assume.

[gravaera]

Hello,

Actually, it should be fully possible to write a VGA text mode driver that is independent of the current resolution (cols x rows).

You may read the number of rows x cols for the current text mode from the BIOS Data Area, and store them into a variable in your console class. In vga_text_init() or construction, or however you do it, you read the values.

http://pagesperso-orange.fr/pierrelib/h ... _Area.html

--Good luck
gravaera

[jasonc122]

Thanks for your replies.

Yes Creature your suspicion is correct; GRUB 0.97 hands over control to a kernel image with an 80x25 text mode set.