Hi,
thinking a little more about your question...the kernel speed is the 'clock rate' of the internal
software driven timer used by Machs parallel port. With an external motion controller like the
ESS there is no timebase internal to Mach, the external controller will no doubt have a clock as a timebase.
The ESS has a max pulse rate of 4Mhz and guess that it is the equivalent of kernel speed. 4 MHz is way
way way quick...
Craig