From mboxrd@z Thu Jan  1 00:00:00 1970
From: John Coppens <john@jcoppens.com>
Subject: Timing problems
Date: Wed, 20 Jun 2007 02:08:41 -0300
Message-ID: <20070620020841.5d5e2274.john@jcoppens.com>
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Hi all.

I was trying to install a very old DOS data acquisition program for a
friend of mine (under Linux + DOSEMU), but there seem to be strange
timing problems.

After many unsuccessful tests (the link with the sensor wouldn't even
come up), I started suspecting timing issues. I booted the machine with a
real DOS disk and sure enough, everything worked.

I suspect this program uses the DOS 18.xxx Hz timer for its loops. Is the
emulation of the timer under DOSEMU the same frequency? Does it depend on
setting up the 250/1000 tick/s of the kernel?

Thanks in advance!
John