On Sun, Oct 5, 2008 at 7:05 PM, Petter Urkedal <[EMAIL PROTECTED]> wrote: > On 2008-10-05, Timothy Normand Miller wrote: >> I decided to go ahead and add the ability to load HQ's scratch memory >> from PCI so we could load constants into there. I noticed two things. > > Will this be a separate BAR, or can we map some range from one of the > existing BARs to the scratch memory? We can write small routine in > poll_pci which handles writes to scratch space, without extra hardware.
It's mapped into the lower 1K engine registers, indirectly. One register is the index, and the other is data (with auto-increment). And yes, if we have to, we'll code it. Basically, if it's trivial to add the hardware, we might as well. If it's a pain, then we'll do it another way. -- Timothy Normand Miller http://www.cse.ohio-state.edu/~millerti Open Graphics Project _______________________________________________ Open-graphics mailing list [email protected] http://lists.duskglow.com/mailman/listinfo/open-graphics List service provided by Duskglow Consulting, LLC (www.duskglow.com)
