INT 62 u - FGDRIVER v1.10 - "FG_ALLOCEMS" - CREATE LOGICAL VIDEO PAGE (EMS)
        AX = 009Eh
        BX = page number (0001h-003Fh)
Return: AX = status
            0000h successful
            FFFCh insufficient memory
            FFFDh page already created, or exists as physical or virtual page
            FFFEh invalid page number
            FFFFh memory manager not initialized
Notes:  must first call AX=00A0h
        the only operation which is allowed on logical pages is AX=005Fh
SeeAlso: AX=005Fh,AX=009Dh,AX=009Fh,AX=00A0h