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Framebuffer

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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 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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