Nope. The m68060 is not microcoded.
Just curious - what kind of flakiness have you been seeing? I'm still using a PowerMac 9600 (which is only slightly younger than the ANS), and while it is currently 100% stable (uptime of a year before moving datacenters while staying pretty busy), I'd like to keep my eye out for any warning signs.
I suppose you were running AIX on your ANS?
