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From: Damouth.wbst@XEROX.COM.UUCP
Newsgroups: comp.sys.apple
Subject: Re: Upgrading a II+ can it be done
Message-ID: <870218-075723-2325@Xerox>
Date: Wed, 18-Feb-87 10:57:23 EST
Article-I.D.: Xerox.870218-075723-2325
Posted: Wed Feb 18 10:57:23 1987
Date-Received: Sat, 21-Feb-87 04:27:36 EST
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A 65C02 plugs right in and runs fine.  I have one in my II+.

More memory is mostly a matter of what kind of hardware support you
provide for paging (somehow you have to provide a new hardware register
with the extra bits of memory address.

There are several plug-in boards which do this.  Applied Engineering
makes a large memory board for the II+ which they claim will run
AppleWorks, which seems to be the benchmark software for testing memory
extension.  It is slightly different than their board for the IIe.  They
have a good reputation.  YOu have to run the special preload program
they supply, which modifies Appleworks to know about the II+
differences.

If you have modest hardware skills, you can modify a II+ keyboard to
have full upper and lower case and to generate all the special
characters.  The instructions were floating around the net a few years
ago, and were fairly simple.  They are probably in the archives of this
dl (do archives really exist?).  The parts cost was negligible. I didn't
do it, because the solution below met my needs.
 
As a simpler alternative, most of the 80-column display boards for the
II+ support the one-wire shift key modification.  Various common
software packages also support this change, including all the popular
wordprocessors, some spreadsheets, etc.  This gives all the
functionality I need - full upper and lower case and the missing
characters.  It requires running a single wire from the shift key to an
unused game port input.  Once you get the covers off the machine, it
takes about five minutes to do.  

/Dave