+++ How to use the Video Extender Board V1.1 with a BF533 Core Module +++

First of all, when applying the CM-BF533 make sure switches
S4 and S5 are set as follows:
   S4 = 0
   S5 = 0

Each Ext-Video board has one analog-video decoder and one 
encoder. When applying the CM-BF533 the Ext-Video board supports 
two different modes:

Mode 1: The port and clock lines of decoder and encoder are
        directly linked together, so the video source attached
        to the video input of the board is directly displayed
        at the outputs entirely omitting the processor. However
        the processor can still capture the video input signal.
        To set up this mode set switches S1, S2 and S3 as 
        follows:
           S1 = 1 on all other off
           S2 = all OFF
           S3 = all ON

Mode 2: The decoder is connected with its port and clock lines
        to the Blackfin's PPI1 port, the encoder to the PPI2
        port. The processor can capture video input and generate
        video output simultaneously and independently.
        To set up this mode set switches S1, S2 and S3 as 
        follows:
           S1 = 1 on all other off
           S2 = all ON
           S3 = all OFF



The example application included can operate in many different 
ways (Comment/uncomment the according sections in "Environment.h" 
to choose one):

 + Direct Loop through: The decoder and encoder are initialised
                        accordigly but the video stream is 
                        entirely omitting the processor.Uncomment 
                        _USE_DIRECT_LOOP_THROUGH_ in 
                        "Environment.h" to test this application *
 + Testpicture: Display the standard test pictures contained in 
                testpic.c and testpic2.c. Uncomment 
                _USE_TEST_PICTURES_ in "Environment.h" to test 
                this application **
 + Take Picture: Grab an image from the input video stream and 
                 store it into RAM. Uncomment _USE_TAKE_PICTURE_ 
                 in "Environment.h" to test this application. *


*) Note: These modes require a video source to be connected as
   input. The software will automatically determine, which video
   input the source is connected to. However analog video is not 
   intended to be hot-pluggable, so it's not recommended to attach
   or remove live input plugs while the processor is running.

**)Do not try and open testpic.c in the VisualDSP++ embedded 
   editor. The file is about 8MB large and might hang the IDE 
   when opened.

Note: During operation all three video output sockets (SVideo-OUT,
CVBS0-OUT and CVBS1-OUT) are active and output the same video 
signal.