Path: utzoo!attcan!uunet!bcstec!iftccu!bressler
From: bressler@iftccu.ca.boeing.com (Rick Bressler)
Newsgroups: comp.sys.ibm.pc
Subject: Re: QEMM 5.0 Slo-o-o-o-ws system DMA
Message-ID: <1470012@iftccu.ca.boeing.com>
Date: 26 Jun 90 19:53:19 GMT
References: <3863@trantor.harris-atd.com>
Organization: Boeing Commercial Airplane Group
Lines: 14

I went home and read my QEMM manual (V5.0) and no page 22 it claims that the 
386 is placed into virtual 8088 mode whenever expanded memory is in use or 
constantly if mapped ram or rom are used.  (Mapped RAM is usually what loadhi
uses).  This pretty much means that if you are using QEMM your machine is 
going to be in v 8086 mode!

Again I would like to stress, this mode is required (as far as I know) to do 
some of the things that QEMM does, it is not a problem with QEMM.  Rather it 
is a problem with the overhead of the 80386 in dealing with interrupts in 
v 8086 mode.  I wonder... does the 486 handle this any better???
 
Am I full of hot air?

-Rick-