Date: Sat, 22 Jun 1996 17:54:15 -0400 (EDT) From: "Ron G. Minnich" <rminnich@Sarnoff.COM> To: Bradley Dunn <dunn@harborcom.net> Cc: nash@mcs.com, freebsd-hardware@freebsd.org Subject: Re: Mixing SIMMs of different speeds Message-ID: <Pine.SUN.3.91.960622175232.8451B-100000@terra> In-Reply-To: <199606222118.RAA17013@ns2.harborcom.net>
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simm speeds are determined by the speed grade jumpers soldered onto the simm module. RAM controllers use these jumpers to drive timing. If the hardware only uses one simm slot to determine timing for the system, AND you mix simm speeds, then obviously strange things are going to happen if the system drives 70 ns simms with 60 ns timing. ron Ron Minnich |"Inferno runs on MIPS ..., Intel ..., and AMD's rminnich@sarnoff.com |29-kilobit-per-second chip-based architectures ..." (609)-734-3120 | Comm. week, may 13, pg. 4. ftp://ftp.sarnoff.com/pub/mnfs/www/docs/cluster.html
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