Received: from hila.hut.fi by karazm.math.UH.EDU with SMTP id AA28966 (5.65c/IDA-1.4.4 for ); Fri, 18 Oct 1991 14:43:40 -0500 Received: by hila.hut.fi (5.65c/7.0/S-TeKoLa) id AA16262; Fri, 18 Oct 1991 21:39:28 +0200 Date: Fri, 18 Oct 1991 21:39:28 +0200 From: Juri Munkki Message-Id: <199110181939.AA16262@hila.hut.fi> To: glove-list@karazm.math.uh.edu Subject: Re: sega glasses available? The Sega glasses really do operate with +/- 10 V. I haven't tried anything higher, but I do know that they work with +/- 9V. You have to be particularly careful not to feed any DC to the glasses, because it will break the shutters. The % darkness is supposedly around 60%. On the Macintosh it's not a problem to switch the glasses at vertical blanking time (the operating system has support for installing tasks to run at VBL time), so on my monitor at home, I get 66 switches per second (a frame rate of 33 Hz). The new 21" monitor from Apple uses 75 Hz, so there should be almost no flicker. I hope all Mac users on this list are aware of the Macintosh-compatible interface and the sample application that I wrote for it. I don't know if it is any longer possible to connect the glasses and the glove to the same serial port now that we know how to access the hi-res mode. (I haven't looked at the code, but I expect someone to come up with a Mac version really soon now.) Juri