> > Can the classic emulation be used for this?
>
> No. Unfortunately, Macsbug is useful for tracking HW access, but classic
> emulation does no HW access, it all gets routed to underlying OS X drivers
That's what I feared. I'll leave it to others, then.
On the 2.6 front, I've _once_ been able to get the kernel to boot all the
way, and backlight control did work as expected. 99% of the time though,
the kernel barfs sometime after rivafb init. xmon output goes to serial
which is utterly pointless on a flat panel iMac so I'm resorting to poor
man's debugger techniques. The console code appears to tweak the backlight
state a couple of times (upon registering the backlight controller, the
backlight gets turned on, then off, then on again) and depending on the
amount of delay I introduce by adding printk() output, the crash happens
at different times after rivafb init. I'm suspecting stray interrupts, or
concurrent access to the graphics adapter by other code, or high bogon
flux, or some such.
Is there a way to delay registering the backlight controller until later time
during boot?
Michael
