Radek Kujawa wrote:

> How about Sun USB keyboards? I have B&W G3 and Sun USB Type 6 keyboard. 
> It doesn't work with OpenFirmware (I can't enter OF at all with this 
> keyboard). However, it does work perfectly with this G3 once operating 
> system is loaded (I tested it under OS X and NetBSD).

I believe the Type 6 predates USB HID boot protocol support, or that 
there was something weird about the endpoint setup that needed a 
software hack.

> Fortunately one of my co-workers had generic PeCee USB keyboard, and I 
> used it to enter OF - it worked fine.

Yeah, I bought a $60 Logitech pro keyboard that said "MacOS X 
compatible" on the box only to find out that it doesn't support the HID 
boot protocol, so I couldn't get into OF or use any snag keys with it, I 
had to dig out the OEM apple USB keyboard, or a Dell KB. I asked 
Logitech about it and they were like "Yep we know, and we have no plans 
to fix it or support it in the future either." I bet if I had purchased 
a Microsoft keyboard or any other brand without "MacOS X compatible" on 
the box, it would have worked. </rant>

> So I wonder, what makes Sun USB keyboard incompatible with Apple 
> OpenFirmware?

I don't think it's that it's incompatible, just doesn't have USB HID BP 
support, or some kind of bug in the device descriptor(s) that makes the 
USB shim in OF not work.