Date: Sun, 1 Apr 2001 10:36:25 +0200 (IST)
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
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To: Eduardo TUDA Lorenzetti Pellini <dochell AT MailAndNews DOT com>
cc: djgpp AT delorie DOT com
Subject: RE: Real time commitment and IRQ 0
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On Sat, 31 Mar 2001, Eduardo TUDA Lorenzetti Pellini wrote:

> But I was planning to use SMARTDRV in the future to help me to dump my data 
> to the disk AFTER the acquisition. The data size is almost 100Mbytes !!

Writing to disk using DOS is known to mess with interrupts, and
SmartDrv hooks the timer.  It is also possible that the BIOS needs the
timer ticks to get its timings correctly (I'm not sure it's relevant
to your specific case, because the details depend on the exact method
used by the BIOS for disk I/O).  So I'd suggest to reenable IRQ 0
before you write the data to disk, just in case.