INT 67 U - Qualitas 386MAX v7.00 - MEMLIMIT - API
        AH = 1Fh
        DS:SI -> request packet (see below)
Return: AH = status (00h successful, 84h invalid function code, etc.)
SeeAlso: AH=1Eh

Format of request packet:
Offset  Size    Description
 00h    WORD    function code (00h-0Fh)
 02h    WORD    return code (see below)
 04h  4 BYTEs   ???
 08h    WORD    ???
        ???

Values for return code:
 00h    unknown request
 01h    invalid parameter for VCPI limit
 02h    VCPI limit set
 03h    invalid parameter for EMS limit
 04h    EMS limit set
 05h    DPMI disabled
 06h    XMS disabled
 07h    XMS limit set
 08h    unable to uninstall
 09h    unloaded

.