As a side note, I've also run PERIOD down to 7.5uSec on an Athalon 1800XP Getting pretty close to the limits of the processor at this point ! Regards, Paul. On Thursday 20 Jun 2002 3:25 pm, Jacob Kranendonk wrote: > PS test have been done with a 1.1Ghz cpu with freqmode > base task period of 0.000010