stˇphane rivi¸re wrote:
> 
> I use the sleep instruction for the first time on a
> picmaster with 17C44 probe, external clock mode.
> 
> 1) Sleep intruction simply does not work.
> Where I am wrong ?

What exactly does not work?  Is it not going into sleep, or not coming
out of sleep?
> 
> 2) Is sleep mode work with external clock ?
> 
It does in the 16Cxxx controllers.

Maybe with some more information....

--Matt