Well ... theoretically an emulator does not need to have 1:1 mapping between real time and emulated time. If for example in an emulator timing ran at half speed compared to real life, you could use it twice as long. To the OS in the emulated machine it would look like it's running on a machine that is twice as fast and being used by an hyper active user which is also twice as fast (for example at typing) as a normal user.

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