       DROP SHADOW TEST 

This is a crucial test for 240p
upscan converters. It displays a
simple sprite shadow 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
button #GR#G. Backgrounds can
be switched with the #GA#G
button, and #GL#G changes
sprites.