Path: utzoo!attcan!uunet!cs.utexas.edu!tut.cis.ohio-state.edu!ucbvax!QUCDN.BITNET!FLEMINGM
From: FLEMINGM@QUCDN.BITNET (R.Mark Fleming)
Newsgroups: comp.protocols.appletalk
Subject: RE: Apple 2+
Message-ID: <Added.EYEclPy00Ui3IWyU4X@andrew.cmu.edu>
Date: 11 Apr 89 23:34:00 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 22

There is no way to make an Apple 2+ 100% compatible to Apple //c or ][e
computer.  But most applications will run on 64k Apple 2+ and //e.
If the cpu is upgrade, to 65c02 which is what is in Apple //c and
most Apple ][e.  This cpu has some extra machine language instructions
which some people uses in there applications (to get extra speed out of
the cpu).  The Open-Apple and Close-Apple on the //e & //c keyboards
are special, they are tied into game paddle i/o and the
ROM interpretation.

Note: Apple //e with out this cpu will NOT update 80 column
      screen at 1200 baud while scrolling the screen.

      Some applications also check what type of machine you are running on
      like is it an apple //e, apple //c.  Many new word processing packages,
      spelling checkers, and telecommunications.


There is a new Apple //c computer (Apple //cx) that you may like to look at
it has a 4Hz clock and 3 1/2" disk drives (800k of storage compared to
140k per 5 1/4" disk on the old apple ][ plus).

Mark Fleming