Xref: utzoo comp.graphics:8068 rec.games.video:3831 rec.games.programmer:1332
Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!uwm.edu!gem.mps.ohio-state.edu!tut.cis.ohio-state.edu!bloom-beacon!eru!luth!sunic!tut!santra!kampi.hut.fi!jmunkki
From: jmunkki@kampi.hut.fi (Juri Munkki)
Newsgroups: comp.graphics,rec.games.video,rec.games.programmer
Subject: Stereo Graphics for $60
Summary: Build it yourself
Keywords: Sega 3D, LC-Shutters, Stereo
Message-ID: <26076@santra.UUCP>
Date: 25 Oct 89 11:43:02 GMT
Sender: news@santra.UUCP
Reply-To: jmunkki@kampi.hut.fi (Juri Munkki)
Organization: Helsinki University of Technology, Finland
Lines: 32

I have built an interface that connects the Sega 3D-glasses (high speed
liquid crystal shutters) to the Macintosh RS-422 port. It should be possible
to use any RS-422 or RS-232 interface to control the glasses.

The glasses cost about $50 and the parts for the interface are about
$10.  I have written a document on the interface and it is currently
being reviewed by a few of my friends. When they decide that the
document is correct (i.e. they build their interfaces using the
document), I will post the MacWrite file in comp.sys.mac.hardware.

Since most of you can not read the MacWrite file, I can also make
MacPaint, TIFF, GIF and EPSF files available on anonymous ftp. If you
think that I should also post one the files in a newsgroup (like
comp.graphics), please mail me and vote for a file format. The files
will be around 30-50KB depending on how much I have to extend the
current document.

The glasses work quite well and most people notice the 3D-effect. Controlling
them from a Macintosh takes less than ten lines of code. Controlling the
screen is somewhat harder...

Macintosh-specific question follows:

If anyone has information on the 8-bit Mac II graphics card, I'd be very
interested. I need information on the card registers. Optimally, I'd like
to have two 4-bit buffers and switch them at 60 Hz. Changing the clut without
SetEntries (or a control call) would also be ok.

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|     Juri Munkki jmunkki@hut.fi  jmunkki@fingate.bitnet        I Want   Ne   |
|     Helsinki University of Technology Computing Centre        My Own   XT   |
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