Re: LOADALL and the 486

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Article #888

#888

From: Rod Skinner
Date: Fri, 06 Nov 1992 04:52

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In article <Bx9A8o.I23@watserv1.uwaterloo.ca> ajrooks@mansci1.UWaterloo.ca (Alan Rooks) writes:
>marcusj@apricot.co.uk (Marcus Jenkins) writes:
>>I know this may be an FAQ, but I am just a little confused.  Is
>>LOADALL implemented in the 486?
>
>[more stuff about LOADALL, asks for email answers]
>
>FAQ or no, could someone post or give references for the documented
>"undocumented" instructions?  Someone else mentioned bit-string ops on
>the 386.
>
>Thanks in advance,
>Alan Rooks	University of Waterloo		ajrooks@mansci1.uwaterloo.ca

LOADALL is an instruction that was intended for ICE support.  The
early versions of the 80386DX had the instruction available but was 
removed as the die size was reduced.  It is still there in the chip that
accompanies each ICE product.  I have not heard differently so I would
expect that the same is true of the Intel486 CPU family.  There is 
a faster sequence of instructions that perform the same function as 
LOADALL which was provided to those using it.  

Noone uses it today other than the ICE software (if even that).

rod

Rod Skinner				I speak for myself only.
Intel Corp
3065 Bowers Avenue   MS NW1-20            PH (408) 765-4474
Santa Clara, CA 95052                     FAX (408) 765-4920

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From: rskinner@mipos2.intel.com (Rod Skinner)
Newsgroups: comp.sys.intel
Subject: Re: LOADALL and the 486
Message-ID: <BxA2w6.JB5@inews.Intel.COM>
Date: 6 Nov 92 04:52:54 GMT
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