Re: serial port, console IO

[eachus@mitre-bedford.arpa (Robert I. Eachus)]

In article <1992Oct28.091237.408@doc.bmd.trw.com> nickgill@doc.bmd.trw.com writ
es:

   When you use the Alsys board support packages, the parameters passed when
   instantiating the generic paclage CONSOLE_IO are the following:

	   package SERIAL_PORT is new CONSOLE-IO(
		   X0N_XOFF	=>TRUE,
		   ECHO	 	=>TRUE,
		   LINE_EDIT	=>TRUE,
		   IN_BUF_SIZE	=>512,
		   OUT_BUF_SIZE	=>512,
		   GET_SERIAL_VECTOR_OFFSET=>
			   GET_SERIAL_VECTOR_OFFSET,
		   PUT_CHAR	=>PUT_CHAR);

   Can someone explain the last three lines of the above?

   Assuming that CONSOLE-IO is really CONSOLE_IO, what it means is
that the locally visible routines or variables named
GET_SERIAL_VECTOR_OFFSET and PUT_CHAR are matched to the generic
formal parameters of the same name in CONSOLE_IO.  To say more I would
need to see the entire enclosing package AND the declaration of
CONSOLE_IO.  (But when you look at them it should become obvious.)

--

					Robert I. Eachus

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