Hi, I'm playing with a 8051 right now.
I found your comment on another thread, and it made me curious about your implementation.
You mentioned that the code was available per request.
I am writing you here, because I couldn't find any contact info for you and the thread was too old to allow any new comments.
If you read this and are still willing to share the code, shoot me a mail at:
simon at simonscode . org