If your PPC is using a Discovery PHC you can map half or all of your L2 to a block of PAs and then map it where ever you want with VM. I'm sure this was cause o

If your PPC is using a Discovery PHC you can map half or all of your L2 to a block of PAs and then map it where ever you want with VM. I'm sure this was cause of the experience that Genesis had with MIPS. It's a nifty feature.