Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!cs.utexas.edu!asuvax!noao!ncar!midway!valley From: valley@uchicago (Doug Dougherty) Newsgroups: comp.os.msdos.apps Subject: Re: QEMM, etc Recommendation Sought Message-ID: Date: 27 Mar 91 12:35:09 GMT References: <1991Mar21.173016.27609@ssd.kodak.com> <4734@gumby.Altos.COM> Sender: news@midway.uchicago.edu (News Administrator) Organization: University of Chicago Lines: 21 jerry@gumby.Altos.COM (Jerry Gardner) writes: >In article ersys!davem@nro.cs.athabascau.ca (Dave McCrady) writes: >> Having said all that .. I guess the short answer to your question is >>yes ... IF your machine has expanded memory. Extended memory can't be >>mapped to high ram. >This is an incorrect statement. On a 386 machine, QEMM does map extended >memory to high RAM. Most 386 machines don't have true expanded memory, >this feature is provided by QEMM by remapping extended memory. A 386 running >in protected mode can remap RAM in any location to any other location. This is nitpicking. Actually, what happens is that the 386 memory manager emulates expanded memory in software, using the memory mapping capabilities of the processor. Then the expanded memory is used as "high ram". But the point is, it is true expanded memory. It is definitely the case that extended memory (qua extended memory) can't be mapped to high ram.