Date: Sun, 17 Dec 2000 21:25:37 +0200
From: "Eli Zaretskii" <eliz AT is DOT elta DOT co DOT il>
Sender: halo1 AT zahav DOT net DOT il
To: Kai Dietrich <toepferei DOT dietrich AT t-online DOT de>
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CC: djgpp AT delorie DOT com
In-reply-to: <3A3CFCC1.DE115FD0@t-online.de> (message from Kai Dietrich on
	Sun, 17 Dec 2000 18:49:53 +0100)
Subject: Re: replace uclock
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> From: Kai Dietrich <toepferei DOT dietrich AT t-online DOT de>
> Newsgroups: comp.os.msdos.djgpp
> Date: Sun, 17 Dec 2000 18:49:53 +0100
> 
> "To be able to play music in the background in MS-DOS, and to keep proper
> tempo with all sound cards, MIDAS needs to use the system timer (IRQ 0,
> interrupt 8) for music playback. Because of this, user programs may not
> access the timer directly

This will surely interfere with uclock.

> I need an accuracy of  about 1-5 ms.

Do you need a periodic interrupt, or just to measure time between two
events?

The CMOS real-time clock has an accuracy of less than 1 ms, but the
exact method to employ that depends on what exactly do you need to do
with time information.