Path: utzoo!attcan!uunet!ncrlnk!ncrcae!hubcap!gatech!cwjcc!tut.cis.ohio-state.edu!mailrus!cornell!uw-beaver!mit-eddie!killer!egs
From: egs@killer.DALLAS.TX.US (Eric Schnoebelen)
Newsgroups: comp.sys.ibm.pc
Subject: Re: extended vs. expanded
Message-ID: <6198@killer.DALLAS.TX.US>
Date: 22 Nov 88 18:28:55 GMT
References: <1717I78BC@CUNYVM> <1090@esunix.UUCP> <1970@hoqax.UUCP>
Sender: 0000-Admin(0000)
Reply-To: egs@killer.Dallas.TX.US (Eric Schnoebelen)
Organization: John W. Bridges & Associates, Inc., Lewisville, Tx.
Lines: 48

In article <1970@hoqax.UUCP> twb@hoqax.UUCP (T.W. Beattie) writes:
>In article <1090@esunix.UUCP> bpendlet@esunix.UUCP (Bob Pendleton) writes:
>>From article <1717I78BC@CUNYVM>, by I78BC@CUNYVM.CUNY.EDU
 (Michael Polymenakos):
>>> One question. Can extended RAM be used as expanded? Sounds unlikely,
>>> i know...
>>
>>One question that I have not been able to get a good answer for is the
>>difference between "extended" and "expanded" memory. Can someone
>>please explain it to me?
>
>
>I'll try.
>Extended memory is the 384K between 640K and 1M.
>Expanded memory is the RAM above 1M.
>
>[...]
>
>Tom.
>att!hoqaa!twb

	This is WRONG!!!! There have been several good explainations of
expanded and extended memory in the last few days.  Here goes again.

	Expanded memory is the bank switched stuff that conforms to the
Lotus-Intel-Microsoft Standard.  It can be placed in any type of PC from
a PC-1 on up.

	Extended memory is memory from 1M on in AT class or better
computers ( 286/386/486(?) ).   Extended memory is only directly
accessable from protected mode on these processors.

	There are drivers that emulate expanded memory in extended
memory, but I know of none that go the other way.

	Sorry about the flaming tone, I just wanted everyone to get it
right.  ( now, of course I will have exactly backwards, if Murphy is
around.. )

	Hope this helps
		Eric


-- 
Eric Schnoebelen
John W. Bridges & Associates, Inc.
Lewisville, Tx.
egs@u-word.dallas.tx.us			...!killer!u-word!egs