Let's say I use uv-2 IDE I say write a small a51 assembly program like this and add to proj org 1000h mov A,#05h mov 90,A end If i want to simulate it and see the O/p of Port 1 where'd I see it? Sorry if I sound like a n00b , but I searched the whole of KB and couldn't find such basic solns..btw, using AT89S8252
Can you brief more on it?? If you get out of the poisonous chlorine fumes, maybe, some day next year after the effects on your brain has diminished, you will realize that being brief is not always the way to go.