> a plea for help
> i'm currently working on a dmx512 decoder
....
> any help appreciated

Chris,

Have a look at my homepage.  I have my DMX decoder schematic and source
code posted.
It may give you some ideas on how I received the DMX signal.

Kelly Kohls, N5TLE
Dallas, TX
Email:  kkohls@juno.com  OR  n5tle@qsl.net  OR n5tle@arrl.net
Homepage:  http://www.qsl.net/n5tle/

___________________________________________________________________
Get the Internet just the way you want it.
Free software, free e-mail, and free Internet access for a month!
Try Juno Web: http://dl.www.juno.com/dynoget/tagj.