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Re: ProDOS and Apple II (not +)



David Empson wrote:
schmidtd <schmidtd@my-deja.com> wrote:

On Aug 31, 12:28 am, David Schmenk <dschm...@YUCH.gmail.com> wrote:
I've always assumed ProDOS wouldn't work on an Integer Basic Apple II.
The Basic Interpreter won't.  The kernel will.  So, if your disk has
a .SYSTEM file on it before BASIC.SYSTEM appears, that'll get loaded
and executed at $2000 no matter what.  Just make sure you don't depend
on BASIC or BI functions!

I fired up HBCC on my II and to my surprise, it worked.  Does anyone
know of the ProDOS limitations on an Apple II besides running BASIC.SYSTEM?
At one point, ProDOS stopped supporting 48k machines and demanded that
you have 64k.  I don't remember where that break occurred, but it was
before the departure into 65C02 ("enhanced") land.

Version 1.1 was the cutoff.

ProDOS 1.0, 1.0.1 and 1.0.2 will boot on a 48K ][ or ][+ (and on an
Apple /// in emulation mode, I think), but 1.1 and later need 64K
(language card in slot 0 for the ][ or ][+).

Thanks,

Dave...