Sussed it, kind of, I get an output, my 'scope only see's the first part of the preamble code output, but its the right duration and freq so it looks as though its doing the trick.
I think I'll get the right chip for the job.
Next is to program some devices for the cars, I allready have the hex file for that though.
I've also started writing asm to do the same job, I'd like to devise a system where I can still have a decoder compatible with a standard system, but be able to have extra o/p's when used with mine, having a proper working system is usefull for prototyping.