GRAY4.TXT

                     Anton Ertl's GRAY4 for F68KANS

I have added the port of GRAY4 for F68KANS to my distribution.
You may ask, why there has to be a port, because F68KANS is a
ANSI standard Forth system and GRAY4 claims to be ANSI source.

Well, GRAY4 is not really ANSI, because it expects a Forth system
not to be case-sensitive. But F68KANS *is* case-sensitive! 
So Anton's sources had to be converted. This was managed with a nice
tool from Ullrich Hoffman, which you can find in my ANSLIB 
directory.

Beside this difficulty, there was a second (if you do not count the bugs
I found in F68KANS with the help of GRAY4): be sure that your returnstack
is big enough!! My initial value of 2kB was not large enough, so I turned
it to 10kB. Think of the fact, that also the file words like INCLUDED
are using the returnstack! 
(My effect was quite silly: when I typed the content of the file TEST.FS
to my input window, all was fine. When I INCLUDED it, it crashed. It took
me one complete evening to find out the reason!)

The GRAY4 test in TEST.FS needs a lot of dictionary, too. Make sure that
you have about 100kB free for it.

Have fun,

- Joerg