The first thing I started wondering was "is this the same Centaur that comes up as 'CentaurHauls' on a CPUID (EAX=0)?"
This is a blast from the past. Centaur was doing VIA Technology's CPUs, and I was at VIA (in Taiwan) while this author was in Centaur (in the US). I was on the embedded side, but I remember some distinct collaborations with the US team, so there's a non-zero chance to have crossed path.