On Wed, Nov 28, 2001 at 09:54:23AM -0600, Mike Hicks wrote: > Nate Straz <nate at techie.com> wrote: > > > > SGI Origin/Onyx 3000 machines are built from "bricks." There are > > several types of bricks that make up a system. > [snip] > > P PCI brick, include (I think) 6 PCI buses with 2 slots each > > That's cool.. Anyone know of PC motherboards that split off and have > several PCI buses? It'd be great to stick slower devices on one bus (ISA > bus, USB, etc), then faster bits on another (Ethernet, FireWire, IDE > and/or SCSI). I think it's mostly for hot-plug PCI. You need to shut down the bus before you take the card out. So with this design, you're only shutting down one other card. I believe all the slots in the P-brick are 66Mhz. I think there are also a few slots in the I-brick, one 66Mhz and one 33Mhz. I'd have to check the specs to be sure. Nate