Wanted: information on protected mode

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#4607

From: christopher kushmerick
Date: Fri, 08 Feb 1991 20:50

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I am looking for citations in mainstream pc magazines, book references,
or information from individuals on the following aspects of protected
mode programming, and protected mode:

What is it? Is it inherent in the 286 processor, or is it part of the
AT bus specification?, how do I enter  it? exit it? Why does it exist?
can any commercial compilers use it to access 16Mb ram? Is there a 286 clone
that does not have this feature?

etcetera etcetera. In otyher words I need to know about this phenomina.

Put another way: I have a frame grabber board which has 1/2 Mb ram on it.
I want to read and write to this ram, which has its base at $A0000:0000.
How can I do this?


-- 
Chris Kushmerick                                 kciremhsuK sirhC
kushmer@bnlux0.bnl.gov    <===Try this one first
kushmerick@pofvax.sunysb.edu

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From: kushmer@bnlux0.bnl.gov (christopher kushmerick)
Newsgroups: comp.os.msdos.programmer,comp.sys.ibm.pc.hardware
Subject: Wanted: information on protected mode
Message-ID: <2500@bnlux0.bnl.gov>
Date: 8 Feb 91 20:50:14 GMT
Organization: Brookhaven National Lab
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