Andy wrote:

No, it is perfectly resonable.
So often we see questions like, "where can I buy XYZ" without any mention of the location!

Andy, Manfred's problem is not "where can I buy XYZ", but:

I want to use POWER DOWN {with AT89S52} but I am not able to do this.

Then you wrote:

Maybe Erik knows someting about the pig population of a certain specific locality...?

And this is your argument to give me a negative Karma point?? That's even more ridiculous...

Kai