===== Genesis 3 Video Encoder =====
There are at least two versions of Genesis 3, but all use the Sony CXA1645 video encoder chip, which was also used in later revisions of the Genesis 2 and the PSX. [[http://www.gamesx.com/rgbadd/cxa1645.pdf|Here is a datasheet for the CXA1645]], which also includes details on how to add S-video output.