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 is either:
Off-screen, meaning that writes to the framebuffer don't appear on the visible screen
On-screen, meaning that the framebuffer 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.
It 12 represents the framebuffer of some video hardware and allows application 13 software to access the graphics hardware through a well-defined interface, so 14 the software doesn't need to know anything about the low-level (hardware 15 register) stuff.
FrameBuffer Resolution Maintenance 114 -------------------------------------- 115 116 Framebuffer resolutions are maintained using the utility `fbset'.
After the 169 whole screen (frame) was painted, the beam moves back to the upper left corner: 170 this is called the vertical retrace.
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