From: Colin D Bennett <colin@gibibit.com>
To: grub-devel@gnu.org
Subject: Higher resolution timers
Date: Mon, 12 May 2008 09:33:54 -0700 [thread overview]
Message-ID: <20080512093354.2770e1cf@gibibit.com> (raw)
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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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next reply other threads:[~2008-05-12 16:34 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-12 16:33 Colin D Bennett [this message]
2008-05-14 16:26 ` Higher resolution timers Vesa Jääskeläinen
2008-05-18 16:27 ` Vesa Jääskeläinen
2008-05-20 17:20 ` Colin D Bennett
2008-05-20 17:46 ` Colin D Bennett
2008-05-23 11:55 ` Marco Gerards
2008-05-23 14:28 ` Colin D Bennett
2008-05-24 9:23 ` Marco Gerards
2008-05-28 13:43 ` Robert Millan
2008-05-23 11:48 ` Marco Gerards
2008-05-24 15:25 ` Vesa Jääskeläinen
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