Assembly Language Help (alang.hlp) (Table of Contents; Topic list)
Int 21h Function 44h Subfunction 0Ah
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  Interrupt:   21h     Function:   44h     Subfunction:   0Ah
 
  Title:       IOCTL: Check if Handle is Remote [Version 3.1+]
 
  Description:
 
     Checks whether the specified handle refers to a file or device
     that is local (located on the PC that is running the program) or
     remote (located on a network server).
 
     Input           Output
 
     AH = 44h        If function successful
     AL = 0Ah          Carry flag: clear
     BX = Handle       DX = Attribute word for file or device
                            Bit 15 = 0 (if local)
                                   = 1 (if remote)
 
                     If function unsuccessful
                       Carry flag: set
                       AX = Error code (01h or 06h)
                       See: Error codes
                                    -♦-