Starts the Ultra Long Period Zen Timer counting.
Once you have started the timer, you can stop it with ULZTimerOff
or you can latch the current count with
The Ultra Long Period Zen Timer uses the available operating
system services to obtain accurate timings results with as much
precision as the operating system provides, but with enough
granularity to time longer periods of time than the Long Period Zen Timer.
Note that the resolution of the timer ticks is not constant between
different platforms, and you should use the
to determine the number of seconds in a single tick of the timer,
and use this to convert the timer counts to seconds.
Under 32-bit DOS, we use the system timer tick which runs at 18.2
times per second. Given that the timer count is returned as
an unsigned 32-bit integer, this we can time intervals that are
a maximum of 232 * (1/18.2) in length (or about 65,550 hours or