INT 21 - 10NET v5.0 - 10BEUI.DOS - API
        AX = 4402h
        BX = file handle referencing device "10BEUI$"
        DS:DX -> parameter record (see below)
        CX ignored
Return: CF clear if successful
            AX destroyed
        CF set on error
            AX = error code (01h,05h,06h,0Dh) (see AH=59h)
SeeAlso: AX=4402h"10MEMMGR",INT 6F/AH=00h"10NET"

Format of parameter record:
Offset  Size    Description
 00h    WORD    000Ah (function number???)
 02h    WORD    ???
 04h    DWORD   pointer to buffer for ???
 08h  4 BYTEs   ???
 0Ch    WORD    transfer size

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