Re: DMA on PC motherboards

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Article #1233

#1233

From: Darryl Okahata
Date: Sat, 12 Dec 1992 01:25

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Chris Granitz (chrisg@strobe.ATC.Olivetti.Com) wrote:

>      Does anyone know if this type of problem (DMA use and memory refresh
> problems) can be fixed using the "Hidden Refresh" option available on some
> boards with AMI BIOS. I have Hidden Refresh turned ON (refresh is hidden from
> the CPU) for my OPTi 386-40 motherboard. Do you think that if one were to
> turn this option OFF, the DMA/Refresh problems would disappear ?

     I believe so.  However, there may be restrictions on whether or not
you can take advantage of hidden refresh, assuming that your motherboard
even supports it.  My motherboard supports it, but only if both memory
banks are used.  As I'm only using one bank (with sixteen MB), I can't
turn it on, even though my motherboard supports it.  I'd have to add
another 16MB of RAM to turn it on, and I can't afford this.

     -- Darryl Okahata
	Internet: darrylo@sr.hp.com

DISCLAIMER: this message is the author's personal opinion and does not
constitute the support, opinion or policy of Hewlett-Packard or of the
little green men that have been following him all day.

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From: darrylo@hpsrdmo.sr.hp.com (Darryl Okahata)
Subject: Re: DMA on PC motherboards
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Date: Sat, 12 Dec 1992 01:25:29 GMT
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