From: libolt AT goodnet DOT com (Mike McLean)
Newsgroups: comp.os.msdos.djgpp
Subject: Allegro Vesa mode graphics
Date: 25 Jan 1997 14:22:03 -0700
Organization: Lightning Bolt Software
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To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

I am having trouble doing graphics in Vesa graphics modes.  I am
trying to display in 640x480 colors, what I display to the screen
displays, yet it also displays garbage over it.

this is what I use to set the mode, should i change something?

set_gfx_mode(GFX_VESA2B, 640, 480, 0, 0);