*BSD News Article 6729


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Xref: sserve comp.sys.ibm.pc.hardware:33822 comp.unix.bsd:6778
Newsgroups: comp.sys.ibm.pc.hardware,comp.unix.bsd
Path: sserve!manuel.anu.edu.au!munnari.oz.au!sgiblab!spool.mu.edu!think.com!paperboy.osf.org!kenny
From: kenny@osf.org (Kenneth Crudup)
Subject: Re: Question on Diamond Clock Synthesizer
Message-ID: <1992Oct19.151409.24581@osf.org>
Summary: BS running rampant
Sender: news@osf.org (USENET News System)
Organization: Open Software Foundation
References: <1b7tmgINNi06@agate.berkeley.edu> <1992Oct19.082420.16353@Informatik.TU-Muenchen.DE>
Date: Mon, 19 Oct 1992 15:14:09 GMT
Lines: 34

In article <1992Oct19.082420.16353@Informatik.TU-Muenchen.DE>
roell@informatik.tu-muenchen.de (Thomas Roell) writes:

>There are a few limitations like the highest frequency the chip can produce
>(without emitting that neat smoke)

Yeah, like maybe CLK/1????

....

>So what would happen if you programm the PLL wrong and blow your board ?

ONCE MORE- explain to me exactly how programming a divider value into a
chip WILL BLOW IT!!! 

If you run some chips (the i486 comes to mind) at higher speeds, they will
dissipate more power, and could (BIG emphasis on could) overheat to the
point where the chip becomes unreliable, but NOT fail. No chips on my
SS24x run anywhere near warm, and definately less than the heat generated
by my AMI 386-40. In order to get any type of useful divider resolution,
the clock freq in has to be quite high. If you "program the PLL wrong"
so that you generate one of these "chip-blowing high frequencies" YOUR
MONITOR WILL SHOW IT (or I guess you'll tell me, despite my kicking holes
in that theory, that it will blow your monitor too?)

Either give me a full technical explanation, or quit talking shit! How much
*is* Diamond paying you?

	-Kenny
-- 
Kenneth R. Crudup, Contractor, OSF DCE QA
OSF, 11 Cambridge Center, Cambridge, MA 02142	+1 617 621 7306
kenny@osf.osf.org			OSF has nothing to do with this post.
	  Religion: The longest-running gag ever played on Mankind.