VGA Resources: Difference between revisions

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Revision as of 14:07, 6 August 2008

Google Search "VGA registers programming",
OSD: Graphics From Chris Giese, containing many code snippets.
Tutorial on VGA graphics including basis of font and line rendering, palette setting, unchained mode, etc.

Graphics Registers -- control the way the CPU accesses video RAM.
Sequencer Registers -- control how video data is sent to the DAC.
Attribute Controller Registers -- selects the 16 color and 64 color palettes used for EGA/CGA compatibility.
CRT Controller Registers -- control how the video is output to the display.
Color Registers -- selects the 256 color palette from the maximum possible colors.
External Registers -- miscellaneous registers used to control video operation.

90x60 text mode from Chris Giese <geezer@execpc.com>
Changing text mode font -- this also has code for switching video modes without bios

@@ Line 21: / Line 21: @@
 ==== Selected coding tricks ====
-* [http://files.osdev.org/mirrors/geezer/software/90x60.asm 90x60 text mode] from Chris Giese <geezer@execpc.com>
+* [http://my.execpc.com/~geezer/software/90x60.asm 90x60 text mode] from Chris Giese <geezer@execpc.com>
-* [http://my.execpc.com/~geezer/osd/graphics/modes.c Changing text mode font] -- this also has code for switching video modes without bios
+* [http://files.osdev.org/mirrors/geezer/osd/graphics/modes.c Changing text mode font] -- this also has code for switching video modes without bios