The CMOS version of the 65C02. Used on long selling 3rd version Apple //e, Appple //c and lots of single-board industrial control computers. One of the most commercially important CPU architectures in the development of the personal computer.
Patents cited on die:
http://www.google.ca/patents/US4800487
http://www.google.ca/patents/US4652992
http://www.google.ca/patents/US4876639
http://www.google.ca/patents/US4652992
more details and photos on my blog:
http://electronupdate.blogspot.ca
Apple ][
Photograph by Rama, Wikimedia Commons, Cc-by-sa-2.0-fr
Commodore Pet 2001
Photograph by Rama, Wikimedia Commons, Cc-by-sa-2.0-fr