Int 14 Fn 06  - Pc-mos/386 V5.01 $serial.sys V5.04 - Driver 'id' Function  [S]

   AH = 06h
   DX = port number

Return: AH bit 7 set
   AL = number of highest function supported by driver
Program: PC-MOS/386 v5.01 is a multitasking, multiuser MS-DOS 5.0-compatible
     operating system by The Software Link, Inc.

See Also: AH=18h"PC-MOS"