VGA Resources

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Revision as of 20:12, 2 June 2016 by osdev>Ednutting (Added a link to the FlingOS as it's fairly well documented, designed for learning from and a good place to start looking for an example of how to implemented a protected-mode VGA driver.)

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VGA Resources

This wiki
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.
FlingOS VGA Driver has a good (low-performance but easy to read, protected-mode) VGA driver supporting text and graphical modes

Free VGA

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.

SVGA resources

The VESA home page: http://www.vesa.org

Selected coding tricks

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

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VGA

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