On Mon, Oct 19, 2009 at 12:31:41PM -0400, John Wilson wrote: its behalf instead of assuming the CPU card is The Decider. I'm trying to picture where per-CPU peripherals go in that case so the I/O page is still private but DMA isn't ... ow my head! If you are talking multiple CPUs on a single QBus is there much benefit to assigning peripherals to CPUs other than CPU0? That wouldn't disallow you to do DMA from another CPU to that peripherals I wouldn't think. -brian -- "Coding in C is like sending a 3 year old to do groceries. You gotta tell them exactly what you want or you'll end up with a cupboard full of pop tarts and pancake mix." -- IRC User (http://www.bash.org/?841435)