Framebuffer
The
framebuffer is a part of
RAM in a
computer allocated to hold the graphics information for one frame or picture. This information typically consists of color values for every
pixel (point that can be displayed) on the screen. A framebuffer can either be:
- off-screen, meaning that writes to that memory don't appear on the visible screen,
- or on-screen meaning the memory is directly coupled to the visible display.
The
linux framebuffer device (
fbdev) driver was added to
Linux to support the
Macintosh display, which does not have a text mode. It was ported to
x86 and is used to display a logo (often
Tux) above a screen of text.
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