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If the HDMI cable is already plugged into the on-board HDMI connector before powering up the
development board, the monitor-sense signal will trigger an interrupt to power up the HDMI
transmitter.
When the HDMI transmitter is powered up, a sample video pattern will be displayed on the LCD
monitor. If the cable is unplugged, the HDMI transmitter will power off automatically to reduce the
power consumption.
If the LCD monitor didn't power up automatically when performing activities described above in
this demonstration, users can try to completely switch off the power of the LCD monitor and then
switch on again. Alternatively the user can try to unplug and then re-plug the HDMI cable and wait
for a reasonable time before the LCD monitor to complete its initialization process and start to sync
with the HDMI transmitter.
 Optimization Level setting
Because our main program is stored at on-chip memory of FPGA, the program will occupy a lot of
on-chip memory. So we need to modify the Optimization Level to be Size which allow developers
to use memory more efficiently.
DECA User Manual
Figure 7-2 shows how to set the Optimization level.
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May 22, 2015