@bloodline: It took Mai years to design the Articia S.
Other x86 chip manufacturers have been working since the early 90's on current northbridge solutions.
As you know it'd only take 20 minutes to find a place who'd sell you a chip, and cheaper to just buy that, than delay for 2 years on a custom controller and then have to throw it out at a hugely exploded price.
As for gluing x86 chips to a PPC: very funny, but please don't start people off thinking you were serious..

As it happens the sole reason why the Pegasos is stuck with the Via 8231 for southbridge support is that all of the newer chipsets from Via and other manufacturers use HyperTransport or NetBurst to communicate with the processor/northbridge. These are very x86-biased protocols.