On Thu, Feb 01, 2001 at 11:35:20PM -0500, Chris Tribo wrote:
>     It is entirely possible that you have two different revisions of the
> Motherboard, and hence two slightly different ROM revisions and/or Video
> controllers. Care to check what the ROM version is with TechTool or Apple
> System Profiler? Should be $7xDxx or something along those lines. I wonder
> if PlanB is the "Platinum" video chip that doesn't work on a few other
> boxes, or even possibly Valkrye *shudder*... A trip to the motherboard might
> yield some clues. If I had to guess, I'd bet that one of these motherboards
> is using a Cirrus Logic chip, and one is using a BrookTree [Bt] (Now
> Conexant) chip. I wouldn't put it past Apple...

I wish I'd read this when I had the machine out in the open earlier
today.

It's not very easy for me to run either TechTool or Apple System
Profiler (no MacOS inside!), but I can check the chip labels pretty
easily.

I do have a PlanB machine, a 7300/132, whose graphics bits I know
to be ornery but *definitely* useable. cygnus's dmesg says:

ofb0 at pci1 dev 11 function 0: Apple Computer Control
ofb0: 640 x 480, 8bpp
wsdisplay0 at ofb0
Apple Computer PlanB (undefined subclass 0x00, revision 0x01) at pci1 dev 13 function 0 not configured

So I guess it didn't configure a console when it was last booted,
but I know I've used a console on this machine (of course, it's gone
through several versions of -current since it had a monitor
attached, so...)

On the other hand, here's a 7300/180 (achemar):

ofb0 at pci1 dev 11 function 0: Apple Computer Control
ofb0: 640 x 480, 8bpp
wsdisplay0 at ofb0: console (std, vt100 emulation)

... which doesn't care to share any vendor information regarding its
graphics chip.

denebola, a 7300/200, is the same way, only it notices wskbd0 (which
achemar missed... maybe because I have only one keyboard in that
room which is plausibly plugged into denebola at the moment):

ofb0 at pci1 dev 11 function 0: Apple Computer Control
ofb0: 640 x 480, 8bpp
wsdisplay0 at ofb0: console (std, vt100 emulation), using wskbd0

       ~ g r @ eclipsed.net