Interesting Question - PPC PCI Card in x86

[phaserzen]

If I get some sort of PCI card with a G3/G4 on it and stick it in my x86 workstation, what would it entail to get Gentoo installed and using the PPC as CPU, as well as other hardware in the system on the PCI/AGP busses? I assume using the PC mobo's RAM would not be a fun thing, but I've seen PPC cards with their own RAM. Using the system's IDE/SCSI devices is important.