[MSDN Library June 1998] VTD_Get_Interrupt_Period (50.3548387096774%)

MSDN Library Visual Studio 6.0 > DDK Documentation > Windows 95 Device Driver Kit > Kernel Services Guide > Virtual Timer Device > Reference

[MSDN Library April 2000] VTD_Get_Interrupt_Period (49.8172043010753%)

MSDN Library - April 2000 > DDK Documentation > Windows 95 DDK > Windows 95 Documentation > Kernel Services Guide > Virtual Machine Manager (VMM) > Chapter 42. Virtual Timer Device (VTD) > Reference