INT 21 - Novell NetWare v3+ - CONVERT PATH TO DIRECTORY ENTRY
        AX = F217h subfn F4h
        CX = length of request buffer in bytes
        DX = length of reply buffer in bytes
        DS:SI -> request buffer (see below)
        ES:DI -> reply buffer (see below)
Return: AL = status
        reply buffer filled
SeeAlso: AX=F217h/SF=F3h

Format of request buffer:
Offset  Size    Description
 00h    WORD    length of following data
 02h    BYTE    F4h (subfunction "Convert Path to Directory Entry")
 03h    BYTE    directory handle or 00h for none
 04h    BYTE    length of directory path
 05h  N BYTEs   directory path (must be fully qualified if no handle specified)

Format of reply buffer:
Offset  Size    Description
 00h    BYTE    (return) volume number
 01h    DWORD   (return) directory entry number

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