Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!brunix!cs153020
From: cs153020@cs.brown.edu (Joel Scotkin)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: broken DMA
Keywords: DMA 80386
Message-ID: <66778@brunix.UUCP>
Date: 1 Mar 91 05:38:27 GMT
References: <63023@bbn.BBN.COM>
Sender: news@brunix.UUCP
Reply-To: cs153020@cs.brown.edu (Joel Scotkin)
Organization: Brown University Department of Computer Science
Lines: 11


I had a similiar problem with a backup program on a 386 when I was
using a disk cache.  If you are using one, notably smartdrv from 
windows, when the program tries backing up it keeps failing compare
tests from the data to the cache, and gives up, going slower and 
slower.  For me, pctools backup was completely garbled by smartdrv,
even at the slowest setting, but the program knew that just enough 
was wrong to turn off all dma transfers.

Joel Scotkin
cs153020@cs.brown.edu