Int 61 Fn 0004  - Banyan Vines - Get Number Of Open Files On Remote Drive  [N]

   AX = 0004h subfn 0016h
   DS:DX -> request block (see #3095)

Return: AX = status
       0000h open file count returned in request block
Desc:  Counts the number of open files on the specified remote drive.

Note:  No error is returned if the specified drive number is invalid or points
     to a local drive. Use AX=0004h/SF=0006h to test if a given drive
     number is assigned to a remote drive.

See Also: AX=0004h/SF=0006h

Format of request block:
Offset Size    Description (Table 3095)
 00h   WORD    0016h
 02h   BYTE    drive number (0=default, 1=A:, ...)
 03h   BYTE    reserved
 04h   WORD    buffer for open file count

See Also: #3097