Int 21 Fn 7147  - Windows95 - Long Filename - Get Current Directory        [D]

   AX = 7147h
   DL = drive number (00h = current, 01h = A:, etc.)
   DS:SI -> buffer for ASCIZ directory name

Return: CF clear if successful
   CF set on error
       AX = error code (see #1366)
       7100h if function not supported

Notes: the returned pathname does not include the drive letter, colon, or
     leading backslash, and is not necessarily a long filename -- this
     function returns whatever path was used when changing to the
     current directory, and may include a mixture of long and short
     components
   the provided buffer must be at least as large as the value indicated
     by AX=71A0h
   for compatibility with DOS versions prior to v7.00, the carry flag
     should be set on call to ensure that it is set on exit

See Also: AH=47h,AX=713Bh,AX=7160h,AX=71A0h