没找到明确的记载,MSDN如下文章可供参考 Memory Technical Articles Address Windowing Extensions and Microsoft Windows 2000 Datacenter Server摘录如下 The Microsoft® Windows NT® operating system has always provided applications with a flat 32-bit virtual address space that describes 4 gigabytes (GB) of virtual memory. The address space is usually split so that 2 GB of address space is directly accessible to the application, and the other 2 GB is only accessible to the Windows 2000 executive software. With Windows NT Server 4.0, Enterprise Edition, and Windows 2000 Advanced Server, 32-bit x86-based systems can provide applications with a 3 GB flat virtual address space, with the kernel and executive using only 1 GB.
Memory Technical Articles
Address Windowing Extensions and Microsoft Windows 2000 Datacenter Server摘录如下
The Microsoft® Windows NT® operating system has always provided applications with a flat 32-bit virtual address space that describes 4 gigabytes (GB) of virtual memory. The address space is usually split so that 2 GB of address space is directly accessible to the application, and the other 2 GB is only accessible to the Windows 2000 executive software. With Windows NT Server 4.0, Enterprise Edition, and Windows 2000 Advanced Server, 32-bit x86-based systems can provide applications with a 3 GB flat virtual address space, with the kernel and executive using only 1 GB.