Date:	Mon, 31 Jan 2000 18:49:57 +0200 (IST)
From:	Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
X-Sender:	eliz AT is
To:	Francisco Pastor <etra-id AT etra DOT es>
cc:	djgpp AT delorie DOT com
Subject:	RE: I need to advice on timing...
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On Mon, 31 Jan 2000, Francisco Pastor wrote:

> Yes, is posible to increase the timer speed 65535 times faster. You only
> have to program the new timer divisor in the 8259 timer controler.
> The MSDOS set the timer counter with the 0xffff value. With a inferior
> varlue you get more ticks by second.

Beware: increasing the timer tick interrupt frequency too much will 
eventually bring your machine to its knees.  Hardware interrupt handling 
has a significant overhead in protected mode.  The FAQ recommends not to 
go beyond 20KHz if the machine needs to do something non-trivial in the 
foreground thread.  Slower machine will probably become busy/unstable even
before 20KHz.

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