INT 61 - Banyan VINES - GET NUMBER OF OPEN FILES ON REMOTE DRIVE                
	AX = 0004h subfn 0016h
	DS:DX -> request block (see #03424)
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.
SeeAlso: AX=0004h/SF=0006h


Format of request block:
Offset	Size	Description	(Table 03424)
 00h	WORD	0016h
 02h	BYTE	drive number (0=default, 1=A:, ...)
 03h	BYTE	reserved
 04h	WORD	buffer for open file count
SeeAlso: #03426