[OpenBIOS] Has anyone figured out how to invoke Macsbug from the cocoa gui?

[Alfonso Gamboa]

On my MacBook Air, OSX 10.11, in QEMU while at the OS9 desktop holding left
command,  and pressing right command brought up Macsbug.   I do not recall
attempting this during boot.
On Feb 25, 2016 2:18 PM, "Programmingkid" <programmingkidx at gmail.com> wrote:

>
> On Feb 25, 2016, at 5:02 PM, BALATON Zoltan wrote:
>
> > On Thu, 25 Feb 2016, Programmingkid wrote:
> >> I want to bring up Macsbug while Mac OS 9 is booting. I tried
> command-powerkey (real left and right command keys) but that didn't work.
> Command-fn-f12 also didn't work for me. Anybody have any luck with this
> when using a Mac OS X host?
> >
> > I haven't tried but a web search suggests either Command-Eject could
> work or Ctrl at happy mac display. See:
> > http://davespicks.com/writing/programming/mackeys.html
>
> Thanks but I don't think QEMU supports the eject key. I did try the
> Control key at startup with no luck :(
>
> > Or if these don't work but you can compile programs for MacOS 9 you
> could make an executable that tries to execute an illegal instruction so
> starting this executable would bring up the debugger.
>
>
> I can't run a program while Mac OS 9 is booting up. I'm trying to figure
> out what is causes problems with Mac OS 9 while booting up in the mac99
> target. When I disable all the Open Transport extensions, Mac OS 9.0.4 just
> stops booting and eventually changes the mouse cursor to a bomb. My current
> theory is if I return a certain value from escc_mem_read() when Mac OS 9 is
> looking at the escc, that just might make Mac OS 9 continue to boot. The
> problem is there are so many possibilities of what can be returned.  Trying
> to find that right value (if it exists) would probably require looking a
> PowerPC assembly in Macsbug.
> --
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> Free your System - May the Forth be with you
>
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