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Virtual-86 Mode

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One of the operating modes of the 80386 and 80486 processors in which user programs run as if the CPU were in Real Mode, while providing the protection and address-mapping capabilities of Protected Mode to a supervisor program which oversees the virtual machine on which the user programs are running. This mode is called Virtual-86 because one or more virtual 8086 environments are run on a single CPU. See also Protected Mode, Real Mode, Virtual Machine.