tags:

views:

60

answers:

1
Q: 

Vesa Problems: 0xA0000 or 0xB0000

When dealing with Vesa (version 2) I can detect if its available, get all the available resolutions, but when it comes to setting the resolution... I am able to change to 1024x768 (32bpp) but then the screen is just blank... am testing it on VirtualBox...

After setting the mode, is there anything else am supposed to do?

+2  A: 

Did you actually set any pixels on? It's possible the memory is zeroed out so all you see is an all black screen.

shoosh  2009-09-20 13:14:17
no all I did was just, change to the mode... it clears all my text and printf no more works
Fredrick  2009-09-20 13:19:18
... printf works only in text mode. If you want something on the screen in vesa mode you need to draw some pixels manually. On a different note, why the hell are you mocking around with DOS?
shoosh  2009-09-20 16:12:50
ok I get it... its not really Dos, was trying to create a bootloader/kernel...
Fredrick  2009-09-20 17:55:36

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