Nothing is stopping you from truly emulating a CPU architecture on same architecture, but usually you don't want to for performance reasons (hence paravirtualiz

Nothing is stopping you from truly emulating a CPU architecture on same architecture, but usually you don't want to for performance reasons (hence paravirtualized drivers and leveraging HW virtualization support). You might want to for security or other reasons, though. I think Bochs and DOSBox are examples of x86 emulated on x86.