Higher resolution timers

[Colin D Bennett]

To implement a nice GUI with some animations, it will be important to
have a timer with a better resolution than 1/18 second (which appears
to be the current GRUB timer resolution on the PC).

What would be the best way to do this? Possibilities that I am aware of
are: 
 * RDTSC instruction (must calibrate with RTC at startup?)
 * HPET (complex to use?)
 * RTC (can we set the timer interrupt rate to >18 Hz?)

Does anyone have any thoughts on these options?

I think that using the TSC (w/ RDTSC instruction) and calibrating it
with a quick 2-3 RTC tick loop at startup might be the easiest option.

Regards,
Colin

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