                 DROP SHADOW TEST

This is a crucial test for up-scan converters.
It displays a simple sprite shadow (32x32 pixels)
against a background, but the shadow is shown only
on each other frame. On a CRT this achieves a
transparency effect, since you are watching a 30hz
(25Hz) shadow on a 60hz (50hz) signal. No
background detail should be lost and the shadow
should be visible. 

The user can toggle the frame used to draw the
shadow with the #GX#G button. Backgrounds can be
switched with the #GA#G button, and the #GY#G button
toggles sprites.
                    #CDonna art by Jose Salot#C
