Windows real-time operating system

A recent project requires Windows to perform real-time timing operations to achieve synchronization (12ms), but because Windows is a timeshare system, it can be used by users with a large timer error.

Found a ardence company developed a system called RTX can be used for Windows to achieve real-time operation of the subsystem, the results have not found the software, and later found that the company in 2006 was Citrix Systems (software companies that do virtualization products) have merged, and the company's products do not have such real-time operating subsystems.

and later found Http://www.msptc.com/RTH.html,http://www.real-time-systems.com/real-time_hypervisor_faq/index.php#Which Processor architectures is supported?,http://zone.ni.com/reference/en-xx/help/372833d-01/rthyperhelp/hv_manager/ , these three companies are also introduced to do real-time operation subsystem of such things.

It seems that the real-time operation subsystem is based on the Intel-provided Vt-x (? Forget, is the virtual technology to achieve, and some say that by some means in a DOS way to execute, I also did not understand.

These software on the Internet for a long time has not been found, do not know if anyone has used, can I provide some help? Thank you

Also is that win CE real-time performance is very good, do not know what level of timing accuracy can be reached?