thanks a lot for that reply.

I have also this notion that its really the PBP Compiler that limits me from utilizing your code. thank you very much.

With regard to PBP 2.33. I managed to enable the feature of 16F628A coz if we look at the installation files, only 16F628 is present.

Now, my question is, what is really the minimum version of PBP just to compile your "multiple interrupt" codes?

You said 10 bucks, with all your respect, can you let me have that upgrade for that amount. I'm just a hobbyist and purchasing a new PBP compiler by far costly for me? What are the possible solutions can you suggest?