Re: Tweaking DOS.SYSTEM from Extra-K to support other DOS 3.3 variants

[Moll <MollyBaker@Spam.GMAIL.Spam.Spam.Spam.Com>]

Ed Eastman wrote:
> Moll wrote:
>
> > I've been working on this concept, a DOS.SYSTEM that loads Pronto-DOS, 
> > or ZDOS, or TurboDOS, instead of DOS 3.3
>
> ...
>
> > immediately exits to BASIC after initialization, it does not attempt 
> > to RUN HELLO.
>
>
> I like your idea!
>
> Hm, sounds to me like you are initializing a running DOS, and not the 
> boot loader that actually does the call on start-up.
>
> Look into the boot process (Beneath Apple DOS) and see where your 
> intialization needs to go one DOS is lit.
>
> Thankx,
> Ed

The code that runs the DOS is actually the first 256 bytes of 
DOS.SYSTEM.  The real DOS.SYSTEM does a RUN HELLO once DOS is initialized.

I am thinking the issue could be that I am saving a running DOS image, 
rather than a DOS boot image.  However, I do not know how to pull a DOS 
boot image off a disk and save it as a file.  If I could do that, 
perhaps my problem would be solved. (Note - I would prefer to be able to 
do this from both DOS and ProDOS, if possible.)

Moll.