Re: What's in the '586?

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Article #11874

#11874

From: Dana H. Myers
Date: Thu, 30 May 1991 04:24

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In article <JPC.91May28160504@terra.fct.unl.pt> jpc@fct.unl.pt (Jose Pina Coelho) writes:
>
>In article <1991May24.153126.1468@ichips.intel.com>
>chrisj@pdx041.intel.com (Chris Jones) writes: 
>>   2) REAL mode might be a thing of the past if not for... well, you know.
>If not for messy dog, but how would you load the tables for PM ?

  Easy, the CPU comes up in protected with the on chip descriptors
initialized to some well known values which allow access to the
entire chip address range. Until you force a descriptor reload by
loading a segment register or intersegment jump/call, these values
would be in effect.

  This is how the 80376 works. The 80376 is a 386 without real mode,
Virtual/86 mode, or a paging unit.

-- 
 * Dana H. Myers KK6JQ 		| Views expressed here are	*
 * (213) 337-5136 		| mine and do not necessarily	*
 * dana@locus.com		| reflect those of my employer	*

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!wuarchive!zaphod.mps.ohio-state.edu!swrinde!elroy.jpl.nasa.gov!turnkey!orchard.la.locus.com!fafnir.la.locus.com!dana
From: dana@locus.com (Dana H. Myers)
Newsgroups: comp.arch
Subject: Re: What's in the '586?
Message-ID: <1991May30.042450.2811930@locus.com>
Date: 30 May 91 04:24:50 GMT
References: <5814@goanna.cs.rmit.oz.au> <1991May18.161515.22428@leland.Stanford.EDU> <1991May21.191242.4591@sbcs.sunysb.edu> <1991May22.014604.13983@ims.alaska.edu> <1991May24.153126.1468@ichips.intel.com> <JPC.91May28160504@terra.fct.unl.pt>
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