thanks again,
I am sorry for not understand...
If I slow down the scope time base the dot goes from left to right.
So the first bit transmitted by the PIC is always to the right of the scope and the last transmitted by the PIC is shown to the left.
Am I right ?
Then the 9 seconds old bit is the first transmitted by the PIC.
The 0 secs old bit is the last transmitted by the PIC.
Is it right ?
Thanks