Path: utzoo!attcan!uunet!lll-winken!csd4.milw.wisc.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!LOYVAX.BITNET!PGOETZ
From: PGOETZ@LOYVAX.BITNET
Newsgroups: comp.sys.apple
Subject: Re: Page flipping
Message-ID: <8903161724.aa22311@SMOKE.BRL.MIL>
Date: 16 Mar 89 22:04:00 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 12


        The method Bob Bishop published in Softalk involved finding when
the vertical blank was and then counting cycles until the next one.  Thus,
it could only be used with static images, and NOT with animation (unless
you want to time your entire program loop!)  For an example of a similar
technique, see the boot display for Nasir Gebelli's _Gorgon_.

        Bob Bishop was a truly inventive programmer:  first to use 560
horizontal resolution, first to digitize voice on the Apple, first to
publish this page-flipping method.  What happened to him?

Phil Goetz