)
Values for VTD (VxD ID 0005h) service number:
 0000h	get version
 0001h	update system clock
 0002h	get interrupt period
 0003h	begin minimum interrupt period
 0004h	end minimum interrupt period
 0005h	disable trapping
 0006h	enable trapping
 0007h	get real time
	Return: EDX:EAX = time in 840ns units since Windows was started
 0008h	"VTD_Get_Date_And_Time"
 0009h	"VTD_Adjust_VM_Count"
 000Ah	"VTD_Delay"
SeeAlso: #02646 at INT 2F/AX=1684h/BX=0005h