Here's something, with thanks to John, Tim, Keith, Tim, Joseph, DoN,
Lew, and Jasen, that y'all might get a handle on.

Mode Common Factor Pad Result Common Factor
640x480 160 2 642x482 2(I think)
1280x768 ?

Perhaps one of you more equipped (my Mathcad is on another machine) can
continue this list. The idea is you can present any standard mode by
padding a few pixels on the border and scanning it diagonally. This
reduces retrace overhead, making somewhat better use of available
bandwidth, and allows zooming (on a CRT) using analog control. The
example pads 1 pixel on either side, er, on every side. Smaller modes
on the order of 100x100 pixels might display well on laser galvanometer
scanners. I have a pair set up with a small laser. They are deflected
by a headphone level drive. The laser is powered from a PS/2
mouse/keyboard port.

I will check out the Windows Media Player SDK with Visual C++ 6.0 which
*is* on this machine. I am thinking of a 4:3 Lissajous pattern made
with triangle wave deflection functions showing intensity of sound as a
wider or brighter trace, or both, and I'd like to put a metronome in
there to lock to the beat of music, when music is the input, just as a
start, to popularize the idea.

Doug Goncz
Replikon Research
Falls Church, VA 22044-0394