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From: info-mac@uw-beaver
Newsgroups: fa.info-mac
Subject: Re: am I missing something?
Message-ID:
Date: Fri, 25-Jan-85 06:11:40 EST
Article-I.D.: uw-beave.550
Posted: Fri Jan 25 06:11:40 1985
Date-Received: Mon, 28-Jan-85 06:33:59 EST
Sender: daemon@uw-beaver
Organization: U of Washington Computer Science
Lines: 10
From: [email protected]
I think the Mac is set up in a way similar to the Atari 800. On the Atari,
the 6502 is run at 1.8 MHz, but the display hardware steals enough cycles to
make the effective rate ~ 1 MHz when running in text mode or 320 by 192 mode.
I believe the Lisa 1 ran at a clock speed of 5 MHz, so that it could use the
same trick as the Apple //.
-- [email protected]
