
The directory tree rooted here contains all source code for all
implementations of Presto included in this distribution.  Source and
header files in this directory proper are common to all versions.
The subdirectories unix, sequent, sun, and vax contain source and
header files specific to particular implementations of Presto.

unix	-- source files for BSD-based Unix systems, including
	   Symmetry Dynix, Sun 3 SunOS, and VAX Ultrix.
	   (PRESTO has been ported to a non-UNIX system,
	    but that code is not in this distribution)

sequent	-- files specific to the Balance or Symmetry hardware
	   and to the Dynix operating system.

sun	-- files specific to the Sun 3 hardware
	   and to the SunOS operating system.

vax	-- files specific to the VAX hardware and to the Ultrix
	   operating system.

Common source files may also contain some code which is specific
to particular machines or operating systems.  This code is
appropriately ifdef'd.

	ns32000	-- National Semiconductor 32000 (Sequent Balance)

	i386	-- Intel 80386 (Sequent Symmetry)

	sequent -- Dynix environment

	mc68020	-- Motorola 68020 (Sun 3)

	sun	-- SunOS environment

	vax	-- VAX hardware

Presto versions should not be made in this source directory.
To make a version of Presto, cd to .., ../sequent, ../sun, or ../vax,
and use the makefiles there.  Those makefiles set up the appropriate
symbolic links into the source files here.
