NuBus PowerMacs and PDM video
Michael R. Zucca
mrz5149 at acm.org
Thu Feb 11 14:57:04 EST 1999
At 6:49 AM -0500 2/10/99, BenH wrote:
>Anyway, I now have some code
>to mess with the video controller, so I will be able to work around this
What does the code reveal about the controller? Is it the MkLinux code?
>There is a MacOS call for logical->physical mappings. The base address
>sent by BootX to the kernel is already a physical address (actually both
>are sent with BootX >= 1.0.2b1)
I could see why you're confused, then. The booter sends you an address of
zero and it looks like a bug. :) However, the fact that the frame
buffer starts at 0 physical is weird but shouldn't be an impediment.
The last time I heard of Apple doing this was on the IIsi/IIci. We've been
avoiding the subject in NetBSD-mac68k for some time now :)
Michael Zucca - mrz5149 at acm.org - http://www.mdc.net/~mrz5149/
"I will choose a path that's clear. I will choose Freewill. "
[[ This message was sent via the linuxppc-dev mailing list. Replies are ]]
[[ not forced back to the list, so be sure to Cc linuxppc-dev if your ]]
[[ reply is of general interest. To unsubscribe from linuxppc-dev, send ]]
[[ the message 'unsubscribe' to linuxppc-dev-request at lists.linuxppc.org ]]
More information about the Linuxppc-dev