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From: David Woodhouse <dwmw2@infradead.org>
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To: npunmia@hss.hns.com
Cc: linux-kernel@vger.kernel.org
Subject: Re: RTC !! 
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Date: Thu, 12 Apr 2001 22:39:29 +0100
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npunmia@hss.hns.com said:
> The RTC interrupt  is programmable from 2 Hz to 8192 Hz, in powers of
> 2. So the interrupts that you could get are one of the following:
> 0.122ms, .244ms, .488ms, .977ms, 1.953ms, 3.906ms, 7.813ms, and so on.
>    Is there any  workaround , so that i can use RTC for meeting my
> requirement of an interrupt every 1.666..ms!!  ( I know that i can use
> UTIME or #define HZ 600, but i want to know if i can use RTC for this
> purpose ) 

You could also use the RTC  for providing the system tick (You'd need to 
make HZ a power of two, obviously) and then use the 8254 for providing your 
600Hz interrupt.

--
dwmw2


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