Date: Sun, 2 Nov 1997 16:26:27 +0200 (IST)
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
To: "Gurunandan R. Bhat" <grbhat AT unigoa DOT ernet DOT in>
cc: djgpp AT delorie DOT com
Subject: Re: Tracing the path of Software Interrupts
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On Sat, 1 Nov 1997, Gurunandan R. Bhat wrote:

> Yes. I will do that and report back. Though from the top of my head I 
> cannot guess how to detect the *lost* ticks without installing another 
> int 0x8 handler....

If you chain, compare to the BIOS clock tick count.  If you don't chain, 
get the system clock and multiply seconds by 18.2.