Here's one for the ADB kernel hackers:

I've just noticed that the Valkyrie video in the 630 uses a clock
off of the CUDA chip. To set that clock I'll need to send commands
to the CUDA chip in ADB messages.

What I'm wondering is, how mature is the ADB driver on the CUDA
machines and is there a canonical way to do ADB transactions
in drivers other than, say, the console driver without seriously
goofing everything up?

Is there a way using ADBOp or some other routine to send a message
directly to the CUDA rather than to a device (like a keyboard or something).

Thanks.