Challenge

Usually, audio data is displayed horizontally. Can you modify the code to create a horizontal display? This is a challenging problem and could take a little while to get right. Here are a couple of hints:

• You may want to clear the area and then simply plot the dots that need to be set.
• You may want to buffer up 128 bits of each scanline and use the existing FIFO interface to display the data.

There are a bunch of ways to accomplish this, but you should be able to find one that works.