HelpPC 2.10 Quick Reference Utility Copyright 1991 David Jurgens

    MSC: unsigned _bios_serialcom(unsigned cmd,unsigned port,unsigned fmt)

       - prototype in bios.h

       - cmd   = _COM_INIT     initialize port  (INT 14,0)
               = _COM_SEND     send character  (INT 14,1)
               = _COM_RECEIVE  read character from port  (INT 14,2)
               = _COM_STATUS   get serial port status  (INT 14,3)

       - fmt = combination of the following:
               _COM_CHR7       _COM_CHR8
               _COM_STOP1      _COM_STOP2


               _COM_110        _COM_150           _COM_300
               _COM_600        _COM_1200          _COM_2400
               _COM_4800       _COM_9600

       - returns status word (INT 14, AX reg, modem status in AL,
         port status in AH)
       - Turbo C uses bioscomm()
       - see  INT 14

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