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From: ericcox@cory.Berkeley.EDU (Eric Cox)
Newsgroups: comp.sys.ibm.pc
Subject: Ram storage question
Message-ID: <3282@zen.berkeley.edu>
Date: Wed, 12-Aug-87 15:57:09 EDT
Article-I.D.: zen.3282
Posted: Wed Aug 12 15:57:09 1987
Date-Received: Sat, 15-Aug-87 01:32:59 EDT
Sender: news@zen.berkeley.edu
Reply-To: ericcox@cory.Berkeley.EDU (Eric Cox)
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Organization: University of California, Berkeley
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I have a question about storing real time data in the IBM ram.

What I want to do is interface an A/D converter whose conversions
are initiated by an external clock.  The "conversion done" line will
be used to request a DMA byte transfer from the converter to IBM ram.  

My question is: Will refresh come in every so often and screw up the
		timing of my incoming data?  This data is real-time
		so I must keep these samples regularly spaced in time.
		(Assume my sample rate is slow enough to allow DMA time
		to finish)  How can I avoid this problem if it exists?

Eric Cox