I need schematics to wire a S-video output
- Thread starter qube
- Start date
Hello qube,
Firstly you need to know which board version your Mega Drive II has. This mod *ONLY* works for the (uncommon) VA4 board - I'm afraid there's no easy way to add S-Video output to VA1 and other earlier boards. (The version number is printed on the board itself.)
Find a chip on the board labelled CXA1645 - this is the composite encoder, which provides S-Video as well as composite output. You simply need to make the appropriate connections to the chip, as follows:
Pin 15 - Chroma © output
Pin 16 - Luminance (Y) output
Pin 24 - Ground
It's as easy as that! No other components are required, you can simply wire your cable directly to this chip.
Mike
Firstly you need to know which board version your Mega Drive II has. This mod *ONLY* works for the (uncommon) VA4 board - I'm afraid there's no easy way to add S-Video output to VA1 and other earlier boards. (The version number is printed on the board itself.)
Find a chip on the board labelled CXA1645 - this is the composite encoder, which provides S-Video as well as composite output. You simply need to make the appropriate connections to the chip, as follows:
Pin 15 - Chroma © output
Pin 16 - Luminance (Y) output
Pin 24 - Ground
It's as easy as that! No other components are required, you can simply wire your cable directly to this chip.
Mike
