Re: ProDOS question

[david@wraith.cs.uow.edu.au (David E A Wilson)]

jruschme@csc.com (John Ruschmeyer) writes:
>Just out of curiousity, is the version 1.9 limit a function of the processor,
>memory, or something in the architecture/ROMs. This, could I put a 65C02 in
>a ][+ and run an even newer version?

Version 2.x of ProDOS-8 assume that you have upper & lower case support (for
the boot screen & error messages apart from the one you get if you do not have
a 65c02) and a 65c02 and 64KB of main ram (and Applesoft & Autostart monitor).
So you should have a LC chargen in the motherboard.

Most 65c02 chips do not work in a ][+ according to Jim Sather in "Understanding
the Apple //e". A Rockwell 65c02 worked for him. Alternatively a Zip chip would
also do the trick (I seem to recall seeing the ][+ in my Zip chip manual).
-- 
David Wilson	Dept CompSci Uni Wollongong Australia	david@cs.uow.edu.au