Re: IOPanic ans assert not working ?
Re: IOPanic ans assert not working ?
- Subject: Re: IOPanic ans assert not working ?
- From: "Justin C. Walker" <email@hidden>
- Date: Tue, 5 Feb 2002 17:46:59 -0800
On Tuesday, February 5, 2002, at 05:38 PM, David A. Gatwood wrote:
On Tue, 5 Feb 2002, Andrew Gallatin wrote:
David A. Gatwood writes:
You can't use OF for video by the time the Mac OS X kernel starts.
The
mach console is legacy MkLinux code that still manages to scratch its
way
to the surface every so often. ;-)
Ahh. I see.. I'm used to alphas where you can generally switch back
to the SRM console firmware for I/O if you're in a bad state..
On the macs, they quiesce the OF, which means that you can't use OF
drivers in the kernel. I can only think of one OS that doesn't do this
(NetBSD). It's just a lot of effort to keep OF around.
And, of course, Solaris, where OF was first perpetrated on an
unsuspecting world.
Speaking of consoles. Does anybody happen to know if one of the 2 or
more serial port products for G4s can be used as a serial console by
both OFW and Darwin? I'm talking about the things that plug into the
modem socket on the motherboard and give you a Mini Din 9 connector.
They should. They basically just route the lines off the motherboard
SCC
to a port. As long as the serial console code works correctly, it
should
be pretty uncaring about what's attached to the SCC's output.
We've used these (e.g., the so-called 'stealth' cards) to debug bringup
in the past.
Regards,
Justin
--
Justin C. Walker, Curmudgeon-At-Large *
Institute for General Semantics | If you're not confused,
| You're not paying attention
*--------------------------------------*-------------------------------*