在来宾操作系统的驱动程序窥探内存和硬件寄存器时，软件存在于下面来仿真设备（参见图 2）。
When the guest operating system's driver peeks and pokes at the memory and hardware registers, software exists underneath to emulate the device (see Figure 2).
仿真通常在VM和底层硬件和操作系统之间提供层以便创建如图1中所示的预期的平台环境的幻想。
Emulation commonly provides a layer between the VM and the underlying hardware and operating system to create the illusion of the desired platform environment as shown in Figure 1.
这种开发过程包括使用一个复杂的开发系统，该系统包括硬件仿真能力以及功能强大的软件工具。
This development process may involve emulation using a sophisticated development system with a hardware emulation capability as well as the use of powerful software tools.
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