From mboxrd@z Thu Jan 1 00:00:00 1970 Message-Id: <3.0.6.32.20020204113640.0099aee0@pop3.clear.net.nz> To: 9fans@cse.psu.edu From: Andrew Simmons Subject: Re: [9fans] Virtual memory & paging In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Mon, 4 Feb 2002 11:36:40 +1300 Topicbox-Message-UUID: 4af15ba4-eaca-11e9-9e20-41e7f4b1d025 At 16:53 3/02/2002 -0500, you wrote: >Virtual memory covers any memory that isn't laid out >exactly as it seems to an executing program, i.e., that >there exists some mapping between addresses as seen by the >execution unit and those on the bus to physical memory. > I hope this isn't too dumb a question, but given a sufficiently large physical memory, what would be the advantage of anything other than a one to one mapping of execution unit and physical addresses? >And of course there is the even earlier technique of overlays. I wish you hadn't mentioned those. I'd almost managed to forget about them.