Curtis CEM
Curtis CEM chips are analog chips used in many synthesizers. Produced by Doug Curtis (died 1/2007).
http://en.wikipedia.org/wiki/Curtis_CEM
Synthesis Technology: Curtis Electromusic Datasheet Page
http://www.synthtech.com/cem/c3394pdf.pdf | http://www.synthtech.com/cem/cemdata.html
CEM3394 Interface
Version 2 By Aaron Cram (2000)
http://electro-music.com/forum/phpbb-files/cem3394_v2_163.pdf
Product Overview:
http://curtiselectromusic.com/Product_Overview.html