Re: 60ns and 70ns SIMMS in the same computer with Warp?

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#163

From: Maxwell Daymon
Date: Mon, 22 Apr 1996 00:00

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Scott R. Eliason (seliason@blue.weeg.uiowa.edu) wrote:
: problem exists with the physical memory.  The most common causes are 
: single inline memory modules (SIMMs) that are not the same speed..." (P. 

If you put 10, 20, 50, 60, and 70ns memory in a machine and SET THE BIOS 
TIMING to 70ns, it will all work. However, ALL the memory will be running 
with a cycle time of 70ns, so you will get ZERO benefit from the faster RAM.

Take the same system and set it to 10ns and the fastest memory will work, 
but you will crash when you hit the slow stuff. Sometimes you can get 
away with 60ns timing in a system with 70ns parts, but it's a risk.

: published by IBM.  Here, on p. 175 the author's explain that a Trap 0002 
: error can be due to mismatched SIMMs that operated at different speeds.

If you *clock* all the SIMMs at the speed of the slowest SIMM, you should 
have no trouble. It's when you set the BIOS to a faster speed than any 
single SIMM can handle.

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From: mdaymon@rainbow.rmii.com (Maxwell Daymon)
Subject: Re: 60ns and 70ns SIMMS in the same computer with Warp?
Date: 1996/04/22
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