Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!newstop!sun!amdcad!brahms!phil
From: phil@brahms.amd.com (Phil Ngai)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: Why I lower my CPU speed to 17.5MHz
Message-ID: <1991Feb7.002054.11206@amd.com>
Date: 7 Feb 91 00:20:54 GMT
References: <5540@bwdls58.UUCP> <1991Feb6.055458.7488@d.cs.okstate.edu>
Sender: usenet@amd.com (NNTP Posting)
Organization: Advanced Micro Devices, Inc; Sunnyvale, CA
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In article <1991Feb6.055458.7488@d.cs.okstate.edu> ong@d.cs.okstate.edu (ONG ENG TENG) writes:
|> When one speeds up the CPU by changing the crystal, as ONG has done, 
|> the expansion bus will also be run faster in most cases.  Since it is
|> run at 1/2 CPU speed, this means 10Mhz instead of the standard 8Mhz.
|
|Well, you might be right, but there is a good (and obvious) reason 
|to contradict.  Since my motherboard allows me to switch down 
|to 8MHz operation regardless of the "main" oscillators I have 
|(32MHz, 35MHz, or 40MHz for 16MHz, 17.5MHz, or 20MHz operations).  
|It would be more reasonable for them to use the 8MHz crystal for 

It might be, but what counts is how it actually works, which depends on
chip set you have and how it's configured.

|Nonetheless, I have a funny feeling that you are right somehow!  (i.e.
|computer is funny that way).

Computers are "funny" only to people who haven't a clue about how
they work inside.

--
Would you trust a government that didn't trust you?