Serious problems with OldWorld booting on a Mac 7300

[J. Blank]

On Wed, 16 Jul 2003, Samuel Rydh wrote:

> On Tue, Jul 15, 2003 at 11:20:23PM -0600, J. Blank wrote:
> > ..and also on a 7500!
> >
> > I cannot get OldWorld boot to work AT ALL-- meaning that I ALSO cannot get
> > System 7.5.3 to boot (and I want to, for some silly reason-- humor me) on
> > my 7300 motherboard, or my 7500. Kernel version is 2.4.21-ben2, and I
> > cannot seem to get it to work:
> >
> > * With a ROM I dumped from the 7500
> > * With a ROM I dumped from the 7300
> > * With a ROM from a 7200
> > * Reading the ROM from the machine itself
> > * Using a 7200 oftree
> > * Using an 8500 oftree
> >
> > ...and by the way, HOW DO YOU MAKE YOUR OWN OFTREES??!? I am AMAZED that
> > no one has ever provided documentation for that... or would a 7500 or 7300
> > oftree be identical to an 8500 or a 7200? (???)
>
> I recommend you use the 7200 ROM and the 8500 oftree. This combination
> is the most tested one (and the one I test now and then).
>
> As for making your own oftrees; in the oldworld case it does not really
> make sense since it is only used to configure MOL (the oftree is hardcoded
> in the ROM so MOL never feeds MacOS a copy of the oftree). What one can do
> is obtaining a copy from an oldworld machine. There is a small utility
> in the util/ofdump directory which does this (you will have to compile it).

Ahhh... many thanks! A mystery demystified at last.

>
> > Anyhow, the system boots up to the "Welcome to Macintosh" screen... and
> > goes no further.
>
> Try shift-booting. The really old Mac OS versions does not probe
> for the Awacs audio hardware (which is not emulated). If a dialog
> or alert box is presented during startup (normally the checking disks
> dialog) the beep will hang the system before the box actually pops up...
>

Ah. Tried shift-booting, but after several attempts to get the thing to
register the fact that I was holding down shift, I gave up. ;)

> Once Mac OS has booted, mute the sound (or switch to the
> MolAudio driver).
>
> Oh... and make sure you have built mol from the developer tree of MOL
> (newer CPUs, e.g. the 7455, won't be able to boot oldworld systems
> without a fix which is in this tree).

Does the G3 count as a newer CPU? (In my mind, G3s are new; in everyone
else's minds, it seems, they're old news ;) ;) )

>
> /Samuel
>
>

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