NO. IT IS NOT POSSIBLE TO SEND DATA VIA SIO BUS FROM AN 8051 TO A PC. YOU ARE THE VERY FIRST PERSON TO THINK OF SUCH A THING AND YOU SHOULD FORGET ABOUT MAKING IT WORK. IT CANNOT BE DONE.

The strange thing is that this subject gets asked about at least 10 times per month. The 8052.com message board has been operating for over 5 years. That could possibly mean if you did a SEARCH of the message board you just might see one little example of this working.

Michael Karas