A set of instructions that tells the Windows Registry how to interpret the dumped data.
The "2010 x64" version was significant because earlier emulators struggled with and Driver Signature Enforcement (DSE) . The "patched" versions usually refer to builds where the driver has been modified to bypass signature requirements or to work with specific high-value software suites. How the Emulation Process Works
Are you trying to for a specific legacy program, or are you having trouble getting the driver to load on a newer version of Windows?