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From: jbn@wdl1.UUCP
Newsgroups: net.micro.pc
Subject: Re: Graphics under Xenix - /dev/mem does
Message-ID: <492@wdl1.UUCP>
Date: Sat, 13-Jul-85 00:22:30 EDT
Article-I.D.: wdl1.492
Posted: Sat Jul 13 00:22:30 1985
Date-Received: Wed, 17-Jul-85 06:33:55 EDT
Sender: kimery@wdl1.UUCP
Organization: Ford Aerospace, Western Development Laboratories
Lines: 8
Nf-ID: #R:cornell:-303800:wdl1:5000014:000:300
Nf-From: wdl1!jbn    Jul 12 18:57:00 1985


       The trouble with this approach is that you still have to take all
the overhead of a system call just to update the display.  Try to do anything
really interactive that way, and results will be hopelessly slow.
       Somebody needs to invent Display Memory Management Units.  

						J. Nagle