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Date: Fri, 11 Jun 2004 17:36:21 +0200
From: "Eli Zaretskii" <eliz AT gnu DOT org>
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To: djgpp AT delorie DOT com
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In-reply-to: <001701c44ed6$30907d40$0d01a8c0@josepmariaxp>
Subject: Re: Troubles with hard interrupts aand HDD
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> From: "turomas" <josepmaria AT turomas DOT com>
> Date: Thu, 10 Jun 2004 12:32:11 +0200
> 
> I am developing a CNC. I use a hard interrupt every 500 micro seconds. I =
> have used Irq9 and Irq0 too. It works fine but when I use HDD the =
> latency gets back to 2,5 ms. Can somebody help me.

I bumped into these problems long ago, and as far as my investigations
have shown, it's the consequence of the DOS and BIOS masking off
interrupts when the hard disk writes data.

I didn't find any good solution for this, sorry.