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 C_COMSTAT()

 DESCRIPTION

 C_COMSTAT() returns the current status of the specified COM port.

 SYNTAX

 C_COMSTAT(port)

 PARAMETERS

 port (N) is the COM port to read (1=COM1, 2=COM2, etc.).  The value
 can be any valid COM port number.

 RETURNS

 C_COMSTAT() returns the current status of the COM port.  The
 following values indicate the status of the COM port.

 RETURN VALUE    DESCRIPTION
 ------------    -----------
 -1              Error / not ready
  0              Receive data ready
  1              Overrun error detected
  2              Parity error detected
  3              Framing error detected
  4              Break error detected
  5              Transmission hold register empty
  6              Transmission shift register empty
  7              Timed-out

 EXAMPLES

 if c_comstat(1) = 0
   c_comwrite(1, "Send this string to COM1")
 endif