Re: Memory above 640K being redundant (or something like that)

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#8444

From: Rob Soukoreff
Date: Wed, 20 Mar 1991 18:59

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In article <28292@netcom.COM> resnicks@netcom.COM (Steve Resnick) writes:
>In article <27437@uflorida.cis.ufl.EDU> jdb@reef.cis.ufl.edu (Brian K. W. Hook) writes:
>to map itself to an address < A000. As far as the ROM goes, the 8086
>at reset jumps to address FFFF:0000. The 286/386/486 go to a higher memory
>address, but at boot time, the upper address lines are masked off, and the
>reset vector still works out to be FFFF:0000. This is "hard-coded" to the
>chip itself....


Ok, so WHAT address does a 286/386/486 jump to when it resets, (or at
boot time)??

  Thanks in advance,
   Rob Soukoreff
   rwsoukoreff@trillium.uwaterloo.ca

Technical Details

Message-ID: <1991Mar20.185914.11656@watdragon.waterloo.edu>

Path: arc1-ca.pugleaf.net!utzoo!utgpu!watserv1!watdragon!trillium!rwsoukoreff

References: <27437@uflorida.cis.ufl.EDU> <28292@netcom.COM>

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Newsgroups: comp.sys.ibm.pc.misc,comp.sys.ibm.pc.hardware,comp.os.msdos.programmer
Path: arc1-ca.pugleaf.net!utzoo!utgpu!watserv1!watdragon!trillium!rwsoukoreff
From: rwsoukoreff@trillium.uwaterloo.ca (Rob Soukoreff)
Subject: Re: Memory above 640K being redundant (or something like that)
Message-ID: <1991Mar20.185914.11656@watdragon.waterloo.edu>
Sender: daemon@watdragon.waterloo.edu (Owner of Many System Processes)
Organization: University of Waterloo
References: <27437@uflorida.cis.ufl.EDU> <28292@netcom.COM>
Date: Wed, 20 Mar 1991 18:59:14 GMT
Lines: 18

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