Retrieve the distribution for your architecture from the website,
which will have name ARCH.u.  To install the distribution, issue the
commands:

% mv ARCH.u DIR/.              # DIR is a directory of your choice
% cd DIR
% uudecode ARCH.u
% gunzip cool.tar.gz
% tar -xf cool.tar

Next, modify `DIR/Makefile' to reflect your filesystem;
there are directions at the top of the Makefile.

Now type

% ln -s /tmp/cool DIR
% cd DIR
% gmake install



Notes
-----

1. Cool can be installed for multiple architectures sharing a common
file system.  Just uudecode and untar multiple .u files in the same
directory.  It is only necessary to run "gmake install" once.


2. The assignment Makefiles require a program called 'arch' that
returns a string naming the architecture where 'arch' executes.  (This
mechanism is used to support multiple architectures; the result of
'arch' is used to select the correct binary to run.)  Many systems
have 'arch', but if 'arch' is not available on your system it can be
defined for architecture ARCH as:

#!/bin/sh
echo "ARCH"

The students must have the 'arch' script in their PATH.  The following
table lists the architecture names that are built into the binary
distributions:

for the machine . . .         . . . 'arch' should return
DEC Alpha running OSF		alpha
DECstation running Ultrix	pmax
HP running HPUX			snake
Sun 4 running SunOS		sun4
Pentium running Linux		i586


3. `spim' must be built with an absolute pathname to name the trap
handler.  This distribution has been built with the directory DIR set
to /tmp/cool.  The symbolic link is used to give spim a pointer to the
files it needs, regardless of where you choose to install the system.


4. `spim' does not work properly on Alphas, so you can't run the
generated MIPS code on an Alpha.