Abit AB-BE6 Manual page 44

3-16
What is the SHADOW? The BIOS of standard video or interface cards is stored in
ROM, and it is often very slow. With the Shadow feature, the CPU reads the BIOS on
the VGA card and copies it into RAM. When the CPU runs this BIOS, the operation is
speeded up.
BE6
Computer Knowledge: SHADOW
Chapter3