Ranhunathan, Thanks.
What you have done is great but can you go lillte bit ahead and at least expain what is the purpose of that rotine. I am learning to program 80C51 and have couple of example to look at, but they don't help that much as it is difficult to understand why this/that was done that way. If anyone have source of information on how to impliment serial comms for we, I will appreciate that help. I am learn using C not assembler.