Ben:

The page link you referred to didn't come through...
Pardon if one of these is what you were referring to, but I have found these two links  illuminating on the subject
and I hope you like them:

http://history.nasa.gov/computers/Ch6-3.html

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=12&cad=rja&uact=8&ved=0ahUKEwit8_-C0qbRAhVj_4MKHeRLBQY4ChAWCCEwAQ&url=http%3A%2F%2Fwww.cosmacelf.com%2Fpublications%2Fbooks%2Fa-tale-of-two-processors.pdf&usg=AFQjCNF8NIteax5-C-utfD-bHoGft4oRuA&sig2=gYQWdv6Zg--8XBQ_Kc0OVw&bvm=bv.142059868,d.amc