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Back to Graphics and GPU Programming

mode x?

Started by
2 comments, last by WhatEver 24 years, 9 months ago
ModeX - is a chained VGA mode. It's advantages is that in X-Mode you can VERY fast copy a memory regions within a video memory. But on other hand, it's very slow.
Just think that each byte of video segment (beginning from 0xA000) represent 4 pixels on the screen, and you can set 1,2,3 or 4 pixels at one time (but each time you need to access VGA I/O ports to select them).

Try to search for XLib - very good X-Mode library with many features.

------------------
FlyFire/CodeX
http://codexorg.webjump.com

FlyFire/CodeX
http://codexorg.webjump.com

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Well, I've got the source code to those tutorials on my HDD somewhere, I might be able to email them to you. Have you been here?

http://gameprogrammer.com/3-tweak.html

Its a good site with some good modeX Info.

Plus I've successfully done a bit of ModeX programming, and to boot I've actually made a SVGAX mode. Its an unchained SVGA mode and its pretty darn fast, I can get 320x200x(both 24 and 16bit) and 320x240x16bit to work along witha few other modes... They look pretty cool.

------------------
-Dom:)
Visit - http://www.eisa.net.au/~sdgrab/contents.html

Daemin(Dominik Grabiec)
I'm looking for some comprehensive information about mode-x. I know that everyone says its undocumented and all, but those articles are all ages old - surely someone has figured it out by now!

I looked on the Graphics page, but there's only an article copied from a journal, with none of the source code that the article talks about!

If anyone can help, please do so!

thanks

Thanks a lot, if you could send the source code, i would be most grateful.

my email is
birtley@onaustralia.com.au

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