Hi, All! Privet, Misha, Stan!

Thank you very much for all your comments. All of them are very
interesting and useful.
I have integrated Panos's routine and Misha's precautions regarding
reseting the interrupt system. And now the unit is under test.
For this time I would like to ask you about using setjump() and
longjump() functions. I have never used the functions, and reading
descriptions of the functions does not give me a clear underestending,
how and in which cases the functions could be implemented.

Thank you,
Oleg