Re: Changing the bus speed?

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#305

From: Ken Neighbors
Date: Fri, 24 Jul 1992 17:27

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>I have seen quite a few people talking about the fact that they have 
>upped the bus speed on their boards.  I was just wondering, is this simply 
>by replacing the oscillator crystal?  Or is there something else that must 
>done with the crystal changeout?  Ids there an easy way to determine wheth
>board will support the new speed?

I can change the AT bus speed by changing the clock division factor in
the setup program.  My motherboard is 33MHz, so I could run the bus
at 16.5 = 33/2.  This is probably too fast for some boards, though.
Other factors are 2.5, 3, and 4.  Maybe 5 and 6 too.  This is for
setting the bus to 8MHz (what it supposed to be), for any motherboard
speed.  I.e., 16/2, 20/2.5, 25/3, 33/4, 40/5, and 50/6 are all about 8.

Ken
wkn@leland.stanford.edu

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Message-ID: <1992Jul24.172706.1163@leland.Stanford.EDU>

Path: arc1-ca.pugleaf.net!sparky!uunet!stanford.edu!leland.Stanford.EDU!wkn

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Newsgroups: comp.sys.ibm.pc.misc
Path: arc1-ca.pugleaf.net!sparky!uunet!stanford.edu!leland.Stanford.EDU!wkn
From: wkn@leland.Stanford.EDU (Ken Neighbors)
Subject: Re: Changing the bus speed?
Message-ID: <1992Jul24.172706.1163@leland.Stanford.EDU>
Summary:  can change it in the setup program
Keywords: bus speed
Sender: news@leland.Stanford.EDU (Mr News)
Organization: DSG, Stanford University, CA 94305 USA
Date: Fri, 24 Jul 92 17:27:06 GMT
Lines: 15