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> DOS > graphic mode switch without int |
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DJ Mauretto
i can help you
i can write code to switch any VGA standard graphic mode low level.  |
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24 Nov 2007, 13:07 |
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vid
By using VGA registers, you can only switch to ancient video modes. No purpose to do it now.
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24 Nov 2007, 13:43 |
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edfed
DJ mauretto:
good! so please help me. give me (and us) some code. please please please please VID: i need to switch to all old VGA modes without bios int. in PM there are no bios interrupts. and an os do not need bios. |
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24 Nov 2007, 13:54 |
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Dex4u
You will fine all info you need here:
http://bos.asmhackers.net/docs/vga_without_bios/ |
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24 Nov 2007, 14:15 |
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vid
Quote: i need to switch to all old VGA modes without bios int. what for? Quote: and an os do not need bios. as long as it only supports 640x480, 16 colors, when no driver is installed. |
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24 Nov 2007, 14:40 |
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f0dder
[quote="vid"]
Quote: i need to switch to all old VGA modes without bios i And even then, you still need BIOS when loading your kernel 
Sure, you'll want to avoid BIOS as much as possible for performance reasons, but there's situations where you just can't avoid it. _________________  - carpe noctem |
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24 Nov 2007, 14:45 |
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DJ Mauretto
Quote: DJ mauretto: I tell you that i can help you (in my free time) but i must still write,i don't have nothing ready.If you urgency follow Dex4u link. I don't like to copy other |
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24 Nov 2007, 15:02 |
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edfed
i don't copy.
i always read the source, understand, and rewrite with my style. see you later! |
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24 Nov 2007, 18:12 |
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DJ Mauretto
Quote: i don't copy. Are you Sensitive ? I have not said that you copy, I said simply that I do not like copy and paste programs written by others. You can start watching how about your Bios,learn about VGA register etc.. Note that online example aren't optimised ,you always get noise, and if you do not know how to act, the result will be ugly,it's better learn some VGA before |
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24 Nov 2007, 19:51 |
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System86
There is a lot of info on VGA registers here:
http://www.osdever.net/FreeVGA/vga/vga.htm |
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22 Dec 2007, 18:06 |
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rCX
Here's another one. It's little limited though...
http://www.programmersheaven.com/download/1866/download.aspx |
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25 Dec 2007, 05:04 |
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