From: "Jason R Thorpe" <thorpej@wasabisystems.com>
> Yes, considering that PowerPC is based on POWER... (the 601 was very much
> like the POWER, IIRC :-)

More like POWER than PowerPC, that's for sure.  The 601 didn't implement
several of the PowerPC instructions, and implemented a lot more of the POWER
instructions than the later chips (up through the 620, anyway, I haven't
really followed PowerPC development since then).