!pr1
!lm12
!rm75
Seed Thoughts on Extensions.................Sanford Greenfarb

I am currently between computers.  My 4 1/2 year old Apple died and I have ordered a Basis 108 to replace it.  While waiting, I have been doing some thinking; I came to the conclusion that I can extend, by appropriate coding, either the monitor or Applesoft (or both) into the unused 4K bank of my 16K RAM card.  That second 4K bank at $D000-DFFF is just sitting there, with nothing to do.  In all the Apple mags I have seen no one approaches thi idea.  Maybe they know something I don't, but as soon as my computer comes I am going to try it.

I suspect that I could insert code at $FF7A in the monitor to switch 4K banks and jump to $D000 for a modified character search subroutine.  This way I could add more control characters and routines to the monitor.  This would add features while keeping all the standard entry point address unchanged.

I don't know why no one has used this concept, or at least not publicly.  I am offering this idea to you readers of Apple Assembly Line.  I can't work on it until my new computer comes anyway, and you will probably think of a lot of good uses.
