Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.1 6/24/83; site spuxll.UUCP
Path: utzoo!watmath!clyde!bonnie!akgua!whuxlm!spuxll!ech
From: ech@spuxll.UUCP (Ned Horvath)
Newsgroups: net.micro.mac
Subject: Re: Harmonic Benchmark - 8086 vs Mac
Message-ID: <664@spuxll.UUCP>
Date: Mon, 3-Jun-85 17:42:10 EDT
Article-I.D.: spuxll.664
Posted: Mon Jun  3 17:42:10 1985
Date-Received: Wed, 5-Jun-85 01:07:34 EDT
References: <777@rayssd.UUCP>
Organization: AT&T Information Systems, South Plainfield NJ
Lines: 14

This "statistic" gets misstated so often it's almost funny.  The facts,
direct from Apple:

	- Video refresh consumes at most 25% of the memory cycles, leaving
	  you with (at worst) a 6 MHz 68000.
	- Video refresh cycle-stealing does NOT lock out ROM references,
	  so when running in the toolbox (which is a large fraction of time
	  for many applications) loss due to the refresh is considerably
	  reduced.

Despite which, when/if Apple markets a Mac with a faster 68k, I would hope
that they would put the screen memory in a separate dual-port memory.

=Ned=