)
Call VLM Manager (VLM.EXE, ID 0001h) with:
Func	Description/Registers
 01h	VLM Notify
	BX = function
	    0000h get version
		Return: AX = status (see #02860)
			BX = major version of VLM supported (0001h)
			CX = minor version of VLM supported (0000h)
 03h	VLM Statistics
	CX = length of buffer
	ES:DI -> buffer for statistics (see #02865)
	Return: AX = status (0000h if successful)
		buffer filled if successful
 04h	VLM internal use
	BX = function
	    0000h get interrupt vector (calls INT 21/AH=35h)
	    0001h begin critical section (calls INT 2F/AX=1681h)
	    0002h end critical section (calls INT 2F/AX=1682h)
	    0003h ???