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- Here is the schematic and C source (for IBM PC) for the Sega 3D glasses
- that was posted on sci.virtual-worlds a while ago. The switching circuit
- seems simpler than generating a square wave with 0x55 at 4800 baud;
- I'm not certain, but I think the outportb(0x3fc, 1) and outportb(0x3fc, 3)
- commands in the WaitForVerticalRetrace() function alternately set and
- reset the RTS line on the RS-232 port, while keeping the DTR line constant
- as a power supply. Could someone with PC techs confirm whether bit 0 is
- the DTR line and bit 2 is the RTS line at port 0x3fc on a PC?
-
- I know next to nothing about circuits, and I haven't tried to make
- this one (yet), so I can't say much about it. I just hope it works
- and that it's controled by the DTR line being constantly on, and the
- RTS line causing one eye's view when set and the other eye's view
- when reset. Can someone confirm this or add advice?
-
- I'll put this on karazm.math.uh.edu for those with ftp, too.
-