Re: ProDOS and Apple II (not +)

[dempson@actrix.gen.nz (David Empson)]

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 ][+).

-- 
David Empson
dempson@actrix.gen.nz