S-C DocuMentor:  Applesoft


The S-C DocuMentor for Applesoft provides the most complete
documentation of Applesoft internals available anywhere.  You will find
the information educational, entertaining, and extremely helpful.

The information contained in the comments and labels has been gleaned
from many sources over the years since 1978.  (There has been no direct
involvement of Apple Computer, Inc., in this project.)  I have tried my
best to provide meaningful, helpful comments and labels throughout. 
Nevertheless, there may be some mis-interpretations.  If you find any
errors or have suggestions for improvements, please send them to me.

Many of the label names are deliberately made the same as those
published in "Applesoft Internals", by John Crossley.  This article
first appeard in Volume 1, No. 1, of the Apple Orchard (magazine of the
International Apple Corps).  It has been re-printed since by various
clubs, including Call A.P.P.L.E. in their book "All About Applesoft".

I have flagged about a half dozen bugs in the listing, and several areas
of very "improve-able" code.  These are marked with "<<<" and ">>>" at
each end of the comment lines.

For many years there was only one version of the Applesoft code, as it
was distributed in ROM in the Apple II, IIplus, and IIe computers.  When
the IIc and enhanced IIe were introduced, changes were finally made to
the Applesoft ROMs.  The IIgs includes still more changes.  None of
these changes are reflected in the source code included here.  You can
determine what code is different by comparing the binary object file
produced by assembling the DocuMentor code with the code in ROM:

1.  from within BASIC.SYSTEM, BLOAD the object file at $2000.

2.  go to the monitor by typing CALL-151.

3.  compare the code with 2000<D000.F7FFV.

Primarily the changes involved removing cassette tape support and adding
80-column support.