)
Values for VFBACKUP (VxD ID 0036h) service number:
 0000h	get version
	Return: CF clear
		EAX = version (AH = major, AL = minor)
 0001h	"VFBACKUP_Lock_NEC"
 0002h	"VFBACKUP_UnLock_NEC"
 0003h	"VFBACKUP_Register_NEC"
 0004h	"VFBACKUP_Register_VFD"
 0005h	"VFBACKUP_Lock_All_Ports"
SeeAlso: #01297,#01300