Hi Mahmood,

have you ever heard, that the internal RAM was wrong ?

If you not trust the CPU itself, you can trust nobody and you must also check the other CPU functionality, e.g. if the timers counting right, if instructions like ADD, SUBB, ANL, ... working right and so on.

On checking external connected SRAM, Flash and so on, it should make sense.

But If you not trust yourself, it make no sense and its also impossible to check yourself.

You should trust the manufacturer of the CPU, that he has tested it. And he was the only person, which has the knowledge and can test it completely.


Peter