VESA

os.hacker64 · Post by **os.hacker64** » Sat Feb 16, 2008 2:39 pm

I know it can be done, how can I find info on vesa modes, or XGA and whatnot? Grapics hardware programming in General?

lukem95 · Post by **lukem95** » Sat Feb 16, 2008 2:59 pm

wikipedia, here...

alt.os.development im sure has similar topics... google may help.

i doubt there are any tutorials if thats what your looking for though, and the spec's can be difficult to read

jal · Post by **jal** » Mon Feb 18, 2008 4:04 am

os.hacker64 wrote:I know it can be done, how can I find info on vesa modes, or XGA and whatnot? Grapics hardware programming in General?

Have you tried Google? Have you looked in the OSDev Wiki? Have you tried anything at all before asking?

JAL

Combuster · Post by **Combuster** » Mon Feb 18, 2008 11:32 am

http://www.cyberciti.biz/tips/wp-conten ... n-bart.png

os.hacker64 · Post by **os.hacker64** » Mon Feb 18, 2008 12:31 pm

I used google so it's not a dumb question.

Brynet-Inc · Post by **Brynet-Inc** » Mon Feb 18, 2008 12:47 pm

Posting crap like that, is NOT going to get you any respect here...

In fact, I think it's safe to say your departure will be a joyous occasion..

Combuster · Post by **Combuster** » Mon Feb 18, 2008 1:11 pm

Linked from the forum rules:
[quote]RTFM and STFW: How To Tell You've Seriously Screwed Up

There is an ancient and hallowed tradition: if you get a reply that reads â€œRTFMâ€

jerryleecooper · Post by **jerryleecooper** » Mon Feb 18, 2008 1:12 pm

did you really use google, os hacker64?
http://www.delorie.com/djgpp/doc/ug/graphics/vesa.html

os.hacker64 · Post by **os.hacker64** » Mon Feb 18, 2008 1:23 pm

yeah, I did but I'm in protected mode. so....

jal · Post by **jal** » Mon Feb 18, 2008 1:38 pm

os.hacker64 wrote:yeah, I did but I'm in protected mode. so....

That's not even close to an excuse.

JAL

os.hacker64 · Post by **os.hacker64** » Mon Feb 18, 2008 4:11 pm

I'm looking for how to do it in protected mode. I get how to use the BIOS functions, but what good is that when they are not there?

exkor · Post by **exkor** » Mon Feb 18, 2008 4:32 pm

protected mode and unknown mode(assuming real mode - your 1st post) are totally different enviroments.
VBE functions are optionally accessible via "Protected mode entry point". Such a point may not be implemented at all or only implemented for some function. I myself never used it was never interested in it but you can give it a try.
Other than that say thank you to intel & amd/ati for recent docs.
www.vesa.org/public/VBE/vbe3.pdf

Combuster · Post by **Combuster** » Mon Feb 18, 2008 6:02 pm

I'm looking for how to do it in protected mode. I get how to use the BIOS functions, but what good is that when they are not there?

You can do several bios calls in protected mode using v8086. Most notably those include the video bios. Again, if you have read the other video-related threads that are currently active, and if you have searched the wiki, you would have known that already.

as jal said, that's not an excuse.

Dex · Post by **Dex** » Mon Feb 18, 2008 6:13 pm

You can do all the mode set etc in realmode on booting, than if you have LFB (most do these days), you can you can use vesa as easy as using mode 13h in the old dos days, from pmode.

zaleschiemilgabriel · Post by **zaleschiemilgabriel** » Tue Feb 19, 2008 1:22 am

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I think he already knew about the problem we have with video programming. I know that too, but I'm still hoping that someone on this forum has written some kind of nvidia driver, like they use in Linux, or that they managed to use the Linux module...

And please, I'm expecting a to-the-point answer on this! I'm not ready to give up on this ****-**** of a forum just yet.

By "to-the point" I mean this: If YOU haven't written an NVIDIA driver, or YOU haven't used the Linux module in your OS, shut the F up! If you HAVE, or you know someone who HAS written an NVIDIA driver or used the Linux kernel module successfully, please tell me. A link to some kind of tutorial would be good too.
That second part goes for any other Linux module...
I DON'T CARE ABOUT WHAT YOU HAVEN'T DONE!

It seems like the only way to get some answers around here is to repeat myself, like os.hacker64 did.

OSDev.org

VESA

VESA

Re: VESA