I'm using C164Cl and RTX166 RTOS. I'm using a laptop under linux to simulate a sensor via the serial connection. The problem is that I often receive some data on my laptop I am not excepting. The caracters I receive are e0e0e0e0e0e0 or e00e00e000 in hexadecimal code. After the sending of these caracters the code on the microprocessor is executed very slowly as if the system were very busy. These caracters are never transmitted at the same time of the execution of the program : sometimes after 10s, sometimes after 5 minutes and it doesn't depend on the part of code executing. Do you think it is a problem of serial connection ? (the problem is that I usually receive my data correctly) Otherwise I have noticed that this phenomenon was linked to the priorities of the tasks. Do you think it can come from the Operating system management ? Thank you