Re: Source Code for OS?

[olcott <olcott@qwest.net>]

I already have both of these books.
I haven't had a chance to read them yet.
I would like to get such a complete listing,
that I can re-assemble it, and it will be
byte-for-byte identical. I would also
like to get the source-code for the "other"
Apple Dos 3.3 versions... DavidDOS, etc.

David Empson wrote:

> olcott <olcott@qwest.net> wrote:
>
> > Does anyone have original source code for any of the apple II OS? If not
> > original source code, what about disassembled code? I would especially
> > like to have DOS 3.3, and the patches and fixes in source code form.
>
> The Quality Software book "Beneath Apple DOS" has a commented breakdown
> of the DOS 3.3 code.  It isn't a full disassembly, but it is good enough
> that you can easily generate one.
>
> Beneath Apple DOS might still be available new from Byte Works
> (http://www.byteworks.org).
>
> There was also Beneath Apple ProDOS, which had three supplements
> containing corresponding commented breakdowns of ProDOS versions as far
> as ProDOS-8 1.3.  I've heard that these supplements are now out of
> stock, but I'd check with Byte Works for confirmation.  The base book
> doesn't contain any internal code details, only interface documentation
> and underlying hardware details.