CSE 467 Lab 5
Due on 3/5//02 Beginning of Lab

Purpose

Get Familiar with VGA signal manipulation. Change a system generating VGA signal. Create, design, and implement a project idea of your own that exploits the video and sound capabilities of the hardware.

What You Are Given

We will use the same Virtex card we used in the previous lab. This time we will connect its video output to a standard VGA monitor.

You will be given a project that displays the digitized signal on the monitor, much like digital oscilloscope, along with a description of the system.

System Requirements

You need to add two features into the project.

One is triggering. You'll notice that the display waveform does not appear to be stable at every input frequency. This is solved by specifying a trigger threshold (rising or falling) just like on the real oscilloscope. Implement triggering so that the wave displayed on the scope will stay synchronized for any periodic signal. The trigger level does not have to adjustable. We suggest triggering on an increasing slope of the signal when the signal goes above 10 mV.

The second feature is one of your choice from the following list:

• Join the dots
• Color for rate of change of the signal
• Put in a time and voltage grid
• Make a sampling scope that always displays that last 10 triggered waveforms so that you can see how stable the source is.
• Set it up so that it will capture spoken word and leave the waveform on the display until another word is spoken. We have microphones (you need to run them through the computer so that they are pre-amplified before you send it to the XESS board.
• Insert your idea here! (Don't forget to discuss it with us before implementing it.)

Turn In

• (Electronic) The schematics of your solution (an archived project - please don't forget to clean up the generated files).
• (Paper) A half-page description of your design and how you implemented it.
• (Paper) A project idea for the last two weeks, project that would use the graphics capabilities of the Virtex card. Some things to consider

• There is plenty of RAM that you can access from the FPGA device. We have circuits for doing this
• You can do color
• We have a keyboard interface so that you can hook a keyboard right up to the FPGA and see characters coming in.
• We may have a mouse interface that would be good for games
• If there is something else you think you need, we may have circuits that you can borrow from