Cool, I have a PowerPC based BeBox (133MHz, revision 8) running BeOS R5.
Nice! I've got one of those as well. I wish I'd been able to snag one of the 200MHz machines (there were a very few), but it was a case of saving what you could when all of this was being junked. The quad-proc PPC box would've been nice, too
You wouldn't happen to have any datasheet of the AT&T CRISP CPU with the instruction set?
Ooof... I don't know. I still haven't gone through every bit of documentation I have from there, and that's after 8 years. I'll see what I can find, but really have no idea what's in the pile for the most part.